10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2020

or

☐    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to ____________

Commission File Number: 001-15373

 ENTERPRISE FINANCIAL SERVICES CORP

(Exact name of registrant as specified in its charter)

Incorporated in the State of Delaware

I.R.S. Employer Identification # 43-1706259

Address: 150 North Meramec Avenue, Clayton, MO 63105

Telephone: (314) 725-5500

Securities registered pursuant to Section 12(b) of the Act:

Common Stock, par value $.01 per share	EFSC	Nasdaq Global Select Market
(Title of each class)	(Trading Symbol)	(Name of each exchange on which registered)

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ¨ No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐  No x

The aggregate market value of the voting and non-voting common stock held by non-affiliates of the Registrant was approximately $740,426,000 based on the closing price of the common stock of $31.12 as of the last business day of the registrant’s most recently completed second fiscal quarter (June 30, 2020) as reported by the Nasdaq Global Select Market.

As of February 17, 2021, the Registrant had 31,225,229 shares of outstanding common stock.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of our Annual Report on Form 10-K for the fiscal year ended December 31, 2019 are incorporated by reference into Item 7 of this Annual Report on Form 10-K. Additionally, the information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference to the Registrant’s Definitive Proxy Statement for its 2021 Annual Meeting of Shareholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

ENTERPRISE FINANCIAL SERVICES CORP

2020 ANNUAL REPORT ON FORM 10-K

TABLE OF CONTENTS

		Page
PART I
Item 1.	Business	1
Item 1A.	Risk Factors	12
Item 1B.	Unresolved Staff Comments	26
Item 2.	Properties	26
Item 3.	Legal Proceedings	26
Item 4.	Mine Safety Disclosures	26
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	26
Item 6.	Selected Financial Data	28
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	57
Item 8.	Financial Statements and Supplementary Data	58
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	119
Item 9A.	Controls and Procedures	119
Item 9B.	Other Information	120
PART III
Item 10.	Directors, Executive Officers, and Corporate Governance	120
Item 11.	Executive Compensation	120
Item 12.	Security Ownership of Certain Beneficial Owners, and Management and Related Stockholder Matters	121
Item 13.	Certain Relationships and Related Transactions, and Director Independence	121
Item 14.	Principal Accounting Fees and Services	121
PART IV
Item 15.	Exhibits and Financial Statement Schedules	122
Item 16.	Form 10-K Summary	125
Signatures		126

Glossary of Acronyms, Abbreviations and Entities

The acronyms and abbreviations identified below are used in various sections of this Form 10-K, including “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in Item 7 and the Consolidated Financial Statements and the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.

ACL	Allowance for Credit Losses	FDIC	Federal Deposit Insurance Corporation
ARRC	Alternative Reference Rates Committee	Federal Reserve	Federal Reserve Board
ASC	Accounting Standards Codification	FHLB	Federal Home Loan Bank
ASU	Accounting Standards Update	GAAP	Generally Accepted Accounting Principles
Bank	Enterprise Bank & Trust	JCB	Jefferson County Bancshares, Inc.
Board	Enterprise Financial Services Corp board of directors	LANB	Los Alamos National Bank
BOLI	Bank-Owned Life Insurance	LIBOR	London Interbank Offered Rate
C&I	Commercial and Industrial	MD&A	Management’s Discussion and Analysis of Financial Condition and Results of Operations
CCB	Capital Conservation Buffer	OCC	Office of the Comptroller of the Currency
CDFI	Community Development Financial Institution	PCD	Purchased Credit Deteriorated
CECL	Current Expected Credit Loss	PCI	Purchased Credit Impaired
CET1	Common Equity Tier 1 Capital	PPP	Paycheck Protection Program
CFPB	Consumer Financial Protection Bureau	PPPLF	Paycheck Protection Program Liquidity Facility
Company	Enterprise Financial Services Corp and Subsidiaries	SBA	U.S. Small Business Administration
CRE	Commercial Real Estate	SBIC	Small Business Investment Company
Dodd-Frank Act	Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010	Seacoast	Seacoast Commerce Banc Holdings
EFSC	Enterprise Financial Services Corp	SEC	Securities and Exchange Commission
Enterprise	Enterprise Financial Services Corp and Subsidiaries	Trinity	Trinity Capital Corporation
FASB	Financial Accounting Standards Board

PART 1

ITEM 1: BUSINESS

Forward-Looking Information

Some of the information in this Annual Report on Form 10-K may contain “forward-looking statements” within the meaning of and intended to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, and by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements typically are identified with use of terms such as “may,” “might,” “will, “would,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “could,” “continue” and the negative of these terms and similar words, although some forward-looking statements may be expressed differently. Forward-looking statements also include, but are not limited to, statements regarding plans, objectives, expectations or consequences of announced transactions, known trends, and statements about future performance, operations, products and services. The ability to predict results or the actual effect of future plans or strategies is inherently uncertain. The COVID-19 pandemic is adversely affecting us, our customers, counterparties, employees, and third-party service providers, and the ultimate extent of the impacts on our business, financial position, results of operations, liquidity, and prospects is uncertain. Continued deterioration in general business and economic conditions, including further increases in unemployment rates, or turbulence in domestic or global financial markets could adversely affect our revenues and the values of our assets and liabilities, reduce the availability of funding, lead to a tightening of credit, and further increase stock price volatility. In addition, changes to statutes, regulations, or regulatory policies or practices as a result of, or in response to COVID-19, could affect us in substantial and unpredictable ways. Other factors that could cause or contribute to such differences include, but are not limited to: the ability to efficiently integrate acquisitions, including the Seacoast acquisition, into our operations, retain the customers of these businesses and grow the acquired operations; credit risk; changes in the appraised valuation of real estate securing impaired loans; outcomes of litigation and other contingencies; exposure to general and local economic conditions; risks associated with rapid increases or decreases in prevailing interest rates; consolidation within the banking industry; competition from banks and other financial institutions; the ability to attract and retain relationship officers and other key personnel; burdens imposed by federal and state regulation; changes in regulatory requirements; changes in accounting regulation or standards applicable to banks, including ASU 2016-13 (Topic 326), “Measurement of Credit Losses on Financial Instruments,” commonly referenced as the Current Expected Credit Loss (“CECL”) model, which we adopted on January 1, 2020 and which changed how we estimate credit losses and may increase the required level of our allowance for credit losses in future periods; uncertainty regarding the future of LIBOR; natural disasters; war or terrorist activities, or pandemics, or the outbreak of COVID-19 or similar outbreaks, and their effects on economic and business environments in which we operate; and other risks discussed under the caption “Risk Factors” in Item 1A of this Annual Report on Form 10-K, all of which could cause actual results to differ from those set forth in the forward-looking statements.

Readers are cautioned not to place undue reliance on forward-looking statements, which reflect management’s analysis and expectations only as of the date of such statements. Forward-looking statements speak only as of the date they are made, and the Company does not intend, and undertakes no obligation, to publicly revise or update forward-looking statements after the date of this report, whether as a result of new information, future events or otherwise, except as required by federal securities law. You should understand that it is not possible to predict or identify all risk factors. Readers should carefully review all disclosures we file from time to time with the Securities and Exchange Commission which are available on the Company’s website at www.enterprisebank.com under “Investor Relations.”

General Development and Description of Our Business

Enterprise Financial Services Corp (“we,” “us,” or “our”), a Delaware corporation, is a financial holding company headquartered in Clayton, Missouri incorporated in December 1994. We are the holding company for Enterprise Bank & Trust, a full-service financial institution offering banking and wealth management services to individuals and corporate customers primarily located in Arizona, California, Kansas, Missouri, Nevada, and New Mexico. Our

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executive offices are located at 150 North Meramec Avenue, Clayton, Missouri 63105, and our telephone number is (314) 725-5500.

Our stated mission is “Guiding people to a lifetime of financial success.” We have established an accompanying corporate vision, “To be a company where our associates are proud to work, that delivers ease of navigation to our customers and value to our investors, while helping our communities flourish.” These tenets are fundamental to our business strategies and operations.

Our business objective is to generate attractive shareholder returns by providing comprehensive financial services primarily to privately-held businesses, their owner families, and other success-minded individuals. To achieve these objectives we have developed a business strategy that leverages a focused and relationship-oriented distribution and sales approach, with an emphasis on niche businesses and growing fee income, while maintaining prudent credit and interest rate risk management, appropriate supporting technology, and controlled expense growth. We believe this strategy allows us to maximize organic growth opportunities, which we supplement and enhance through disciplined strategic growth.

As described in greater detail below, the Company offers a broad range of business and personal banking services, including wealth management services provided through Enterprise Trust. Lending services include C&I, CRE, real estate construction and development, residential real estate, SBA, consumer and tax credit-related loan products. A wide variety of deposit products and a complete suite of treasury management and international trade services, along with our tax credit brokerage activities, complement our lending capabilities.

Building long-term client relationships – Our growth strategy is first and foremost client relationship driven. We continuously seek to add clients who fit our target market of businesses, business owners, professionals, and associated relationships. Those relationships are maintained, cultivated, and expanded over time by trained, experienced banking officers and other professionals. We fund loan growth primarily with core deposits from our business and professional clients in addition to consumers in our branch market areas. This is supplemented by borrowing or other deposit sources, including advances from the FHLB, and brokered certificates of deposits.

Specialized lending and product niches – We have focused our lending activities in specialty markets where we believe our expertise and experience as a commercial lender provides advantages over other competitors. In addition, we have developed expertise in certain product niches. These specialty niche activities focus on the following areas:

•Sponsor Finance. We support mid-market company mergers and acquisitions in many domestic markets. We market directly to targeted private equity firms, principally SBICs, and provide primarily senior debt financing to portfolio companies.

•Life Insurance Premium Finance. We specialize in financing whole life insurance premiums utilized in high net worth estate planning, through relationships with boutique estate planners throughout the United States.

•Tax Credit Related Lending. We are a secured lender on affordable housing projects funded through the use of federal and state low income housing tax credits. In addition, we provide leveraged and other loans on projects funded through the U.S. Department of the Treasury Community Development Financial Institution (“CDFI”) New Markets Tax Credit Program. In prior years, we were selected to distribute New Markets Tax Credits, and we continue to participate in the application process, as well as serve as a secured lender to other allocatees.

•Tax Credit Brokerage. We acquire 10-year streams of Missouri state tax credits from affordable housing development funds and sell the tax credits to clients and other individuals for tax planning purposes. We also have a minority ownership in a partnership that acquires, invests and sells, state low income housing tax credits. We lend the partnership money with 6 - 12 year terms and receive interest income and fee income when projects close and when credits are sold. 

•SBA 7(a). We have a team of experienced bankers in production offices across 13 states that originate loans through the SBA 7(a) program. These loans are primarily owner-occupied, commercial real estate loans secured by a 1st lien. These loans predominantly have a 75% portion guaranteed by the SBA. By focusing on this specific product type, we have developed an expertise that allows for speed and reliability of execution.

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Fee income business – We offer a broad range of treasury management products and services that benefit businesses ranging from large national clients to local merchants. Customized solutions and special product bundles are available to clients of all sizes. In response to ever increasing needs for data/information security and functional efficiency, we continue to offer robust cash management systems that employ mobile technology and fraud detection/mitigation services. Enterprise Trust offers a wide range of fiduciary, investment management, and financial advisory services to facilitate our providing these services. We also offer international banking, and tax credit businesses that generate fee income.

Use of technology – Our client technology product offerings include, but are not limited to, internet banking, mobile banking, cash management products, remote deposit capture, positive pay services, fraud detection and prevention, automated payables, check image, and statement and document imaging. Additional service offerings currently supported by the Bank include controlled disbursements, repurchase agreements, and sweep investment accounts. Our cash management suite of products blends technology and personal service, which we believe often creates a competitive advantage over our competition. Technology products are also extensively utilized within the organization by associates in all lines of business including operations and support, customer service, and financial reporting for internal management purposes and for external compliance.

Maintaining asset quality – We monitor asset quality through formal, ongoing, multiple-level reviews of loans in each market and specialized lending niche. These reviews are overseen by the Bank’s credit administration department. In addition, the loan portfolio is subject to ongoing monitoring by a loan review function that reports directly to the Credit Committee of the Bank’s Board of Directors.

Expense management – We manage expenses carefully through detailed budgeting and expense approval processes and measurement of the “efficiency ratio”. The efficiency ratio is equal to noninterest expense divided by total revenue (net interest income plus noninterest income).

Growth through Acquisitions – Disciplined strategic acquisitions have contributed significantly to the Corporation’s growth and expansion over the past five years. Most recently, on November 12, 2020, the Company closed its acquisition of 100% of Seacoast and its wholly-owned subsidiary, Seacoast Commerce Bank. Seacoast operated five full-service retail and commercial banking offices in California and Nevada, as well as SBA loan production and deposit production offices in Arizona, California, Colorado, Illinois, Indiana, Massachusetts, Michigan, Nevada, Ohio, Oregon, Texas, Utah, and Washington. Seacoast shareholders received 0.5061 shares of EFSC common stock for each Seacoast common share and cash in lieu of any fractional shares. In connection with the merger, Enterprise issued approximately 5.0 million shares of EFSC common stock valued at $33.56 per share, which was the closing price of Enterprise common stock on November 12, 2020. The value of the transaction consideration was approximately $169 million. The Seacoast acquisition enhanced the Company’s commercial and specialty lending verticals, while enhancing the Company’s funding profile with deposit expertise in property management, homeowners’ associations, and escrow services, and materially expanding the Company’s geographic footprint.

On March 8, 2019, the Company closed its acquisition of 100% of Trinity and its wholly-owned subsidiary, LANB. Trinity operated six full-service retail and commercial banking offices in Los Alamos, Santa Fe, and Albuquerque, New Mexico. Trinity shareholders received cash consideration of $1.84 per share of Trinity common stock and 0.1972 shares of EFSC common stock per share of Trinity common stock with cash in lieu of fractional shares. Aggregate consideration at closing was approximately 4.0 million shares of EFSC common stock and $37.3 million cash paid to Trinity shareholders. Based on EFSC’s closing stock price of $43.07 on March 7, 2019, the overall transaction had a value of $209.2 million. The Trinity acquisition expanded the Company’s geographic footprint into New Mexico.

Competition

The Company and its subsidiaries operate in highly competitive markets. Our geographic markets are served by multiple large financial and bank holding companies with substantial capital resources and lending capacity. We face competition not only from other financial holding companies and commercial banks, but also from credit

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unions, investment managers, insurers, brokerage firms, technology companies, and other providers of financial services and products. Strong competition for deposit and loan products affects the rates of those products, as well as the terms on which they are offered to customers.

Available Information

Various reports provided to the SEC, including our annual reports, quarterly reports, current reports, proxy statements, and amendments to such reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, are available free of charge on our website at www.enterprisebank.com under the “Investor Relations” link. These reports are made available as soon as reasonably practicable after they are electronically filed with or furnished to the SEC. Our filings with the SEC are also available on the SEC’s website at www.sec.gov. All website addresses given in this document are for information only and are not intended to be an active link or to incorporate any website information into this document.

Supervision and Regulation

The following is a summary description of the relevant laws, rules, and regulations governing banks and financial holding companies. The description of, and references to, the statutes and regulations below are brief summaries and do not purport to be complete. The descriptions are qualified in their entirety by reference to the related statutes and regulations.

The regulatory and supervisory structure establishes a comprehensive framework of activities in which an institution can engage and is intended primarily for the protection of depositors, the deposit insurance funds and the banking system as a whole, rather than for the protection of shareholders or creditors. The regulatory structure also gives the regulatory authorities extensive discretion in connection with their supervisory and enforcement activities and examination policies, including policies concerning the establishment of deposit insurance assessment fees, classification of assets and establishment of adequate loan loss reserves for regulatory purposes.

Various legislation is from time to time introduced in Congress and Missouri’s legislature. Such legislation may change applicable statutes and the operating environment in substantial and unpredictable ways. We cannot determine the ultimate effect that future legislation or implementing regulations would have upon our financial condition or upon our results of operations or the results of operations of any of our subsidiaries.

The Dodd-Frank Act, by way of example, contains a comprehensive set of provisions designed to govern the practices and oversight of financial institutions and other participants in the financial markets. The Dodd-Frank Act made extensive changes in the regulation of financial institutions and their holding companies. Some of the changes brought about by the Dodd-Frank Act have been modified by the Economic Growth, Regulatory Relief, and Consumer Protection Act of 2018 (the “Regulatory Relief Act”), signed into law on May 24, 2018. The Dodd-Frank Act has increased the regulatory burden and compliance costs of the Company.

Legislative and Regulatory Actions in Connection with Global Pandemic. On January 31, 2020, the Secretary of Health and Human Services declared a public health emergency due to the global outbreak of a new strain of coronavirus (COVID-19). On March 13, 2020, the President of the United States proclaimed the COVID-19 as a national emergency, following the World Health Organization’s categorization of the outbreak as a pandemic. COVID-19 continues to aggressively spread globally, including throughout the United States. The pandemic and resulting travel bans, closure of non-essential businesses, social distancing measures and government responses across the country have had a profound impact on the global economy, financial markets and how business has been conducted across all industries and have affected many of the Company’s customers and clients. To the extent the economic impacts of the pandemic continue for a prolonged period and conditions stagnate or worsen, our provision for credit losses, noninterest income, and profitability may be adversely affected.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act was signed into law. The CARES Act contains provisions to assist individuals and businesses, including the SBA’s Paycheck Protection Program. The PPP provided $349 billion in guaranteed loans that are forgivable if certain requirements are met. On April 24, 2020 and December 27, 2020 an additional $310 billion and $284 billion, respectively, was added to the PPP. The CARES Act also provides certain temporary regulatory relief for financial institutions. The act permits

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financial institutions to temporarily suspend any determination of a loan modified as a result of the effects of the COVID-19 pandemic as being a troubled debt restructuring (“TDR”), including impairment for accounting purposes. We elected to apply the CARES Act relief to certain loan modifications that relate primarily to short-term payment deferrals and have not classified such modifications as TDRs.

The CARES Act included a provision that allowed depository institutions the option to defer adoption of the CECL standard to the earlier of (1) the end of the COVID-19 national emergency or (2) December 31, 2020. The Company did not elect the deferral option.

The CARES Act grants potential tax relief and liquidity to businesses, including corporate tax provisions that: temporarily allow for the carryback of net operating losses and remove limitations on the use of loss carryforwards, increase interest expense deduction limitations, and allow accelerated depreciation deductions on certain asset improvements.

Financial Holding Company

The Company is a financial holding company registered under the Bank Holding Company Act of 1956, as amended (“BHCA”). As a financial holding company, the Company is subject to regulation and examination by the Federal Reserve, and is required to file periodic reports of its operations and such additional information as the Federal Reserve may require. In order to remain a financial holding company, the Company must continue to be considered well-managed and well-capitalized by the Federal Reserve, and the Bank must continue to be considered well-managed and well-capitalized by the FDIC, and have at least a “satisfactory” rating under the Community Reinvestment Act. See “Liquidity and Capital Resources” in the Management Discussion and Analysis for more information on our capital adequacy, and “Bank Subsidiary - Community Reinvestment Act” below for more information on the Community Reinvestment Act.

Stock Repurchase Plans: From time to time the Company may engage in stock repurchases. The Federal Reserve requires that bank and financial holding companies, where certain conditions are triggered, provide prior notice to, consult with, and in certain circumstances seek the approval of, the Federal Reserve or reserve bank staff prior to implementing a stock repurchase plan. In addition to the formal guidance, the Federal Reserve appears to have adopted an informal policy of requiring bank and financial holding companies to seek a safety and soundness “non-objection” from the appropriate regulatory staff prior to implementing a stock repurchase plan, regardless of the financial or capital position of the holding company. In some cases, examiners following this informal policy have required the holding company to produce additional information and materials for review.

Acquisitions: With certain limited exceptions, the BHCA requires every financial holding company or bank holding company to obtain the prior approval of the Federal Reserve before (i) acquiring substantially all the assets of any bank, (ii) acquiring direct or indirect ownership or control of any voting shares of any bank if, after such acquisition, it would own or control more than 5% of the voting shares of such bank (unless it already owns or controls the majority of such shares), or (iii) merging or consolidating with another bank holding company. Additionally, the BHCA provides that the Federal Reserve may not approve any of these transactions if it would result in or tend to create a monopoly, substantially lessen competition, or otherwise function as a restraint of trade, unless the anti-competitive effects of the proposed transaction are clearly outweighed by the public interest in meeting the convenience and needs of the community to be served. The Federal Reserve also is required to consider the financial and managerial resources and future prospects of the bank holding companies and banks concerned and the convenience and needs of the community to be served. The Federal Reserve’s consideration of financial resources generally focuses on capital adequacy, which is described below.

Change in Bank Control: Subject to various exceptions, the BHCA and the Change in Bank Control Act, together with related regulations, require Federal Reserve approval prior to any person or company acquiring “control” of a bank or financial holding company. Control is conclusively presumed to exist if an individual or company acquires 25% or more of any class of voting securities of the Company or controls a majority of the board of directors. In certain circumstances, control is rebuttably presumed to exist if a person or company acquires 10% or more, but less

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than 25%, of any class of voting securities of the Company. The regulations provide a procedure for challenging rebuttable presumptions of control.

Permitted Activities: The BHCA has generally prohibited a bank holding company from engaging in activities other than banking or managing or controlling banks or other permissible subsidiaries and from acquiring or retaining direct or indirect control of any company engaged in any activities other than those determined by the Federal Reserve to be closely related to banking or managing or controlling banks as to be a proper incident thereto. Provisions of the Gramm-Leach-Bliley Act have expanded the permissible activities of a bank holding company that qualifies as a financial holding company. Under the regulations implementing the Gramm-Leach-Bliley Act, a financial holding company may engage in additional activities that are financial in nature or incidental or complementary to financial activities. Those activities include, among other activities, certain insurance, advisory and securities activities.

Support of Bank Subsidiaries: Under Federal Reserve policy, the Company is expected to act as a source of financial strength for the Bank and to commit resources to support the Bank. In addition, pursuant to the Dodd-Frank Act, this longstanding policy has been given the force of law, and additional regulations promulgated by the Federal Reserve to further implement the statute are possible; however, the bank subsidiary support provisions of the statute are fully effective even absent implementing regulations. As in the past, such financial support from the Company may be required at times when, without this legal requirement, the Company may not be inclined to provide it.

Capital Adequacy: The Company is also subject to capital requirements applied on a consolidated basis, which are substantially similar to those required of the Bank (summarized below).

Dividend Restrictions: Under Federal Reserve policies, financial holding companies may pay cash dividends on common stock only out of income available over the past year if prospective earnings retention is consistent with the organization’s expected future needs and financial condition and if the organization is not in danger of not meeting its minimum regulatory capital requirements. Federal Reserve policy also provides that financial holding companies should not maintain a level of cash dividends that undermines the financial holding company’s ability to serve as a source of strength to its banking subsidiaries.

Bank Subsidiary

The Bank is a Missouri trust company with banking powers and is subject to supervision and regulation by the Missouri Division of Finance. In addition, as a Federal Reserve non-member bank, it is subject to supervision and regulation by the FDIC. The Bank is a member of the FHLB of Des Moines.

The Bank is subject to extensive federal and state regulatory oversight. The various regulatory authorities regulate or monitor all areas of the banking operations, including security devices and procedures, adequacy of capitalization and loss reserves, loans, investments, borrowings, deposits, mergers, issuance of securities, payment of dividends, interest rates payable on deposits, interest rates or fees chargeable on loans, establishment of branches, corporate reorganizations, maintenance of books and records, and adequacy of staff training to carry on safe lending and deposit gathering practices. The Bank must maintain certain capital ratios and is subject to limitations on aggregate investments in real estate, bank premises, low-income housing projects, and furniture and fixtures. In connection with their supervision and regulation responsibilities, the Bank is subject to periodic examination by the FDIC and Missouri Division of Finance.

Capital Adequacy: The Bank is required to comply with the FDIC’s capital adequacy standards for insured banks. The FDIC has issued risk-based capital and leverage capital guidelines for measuring capital adequacy, and all applicable capital standards must be satisfied for the Bank to be considered in compliance with regulatory capital requirements.

In 2013, the Federal Reserve, FDIC and OCC approved a final rule to establish a new comprehensive regulatory capital framework for all U.S. banking organizations. This regulatory capital framework, commonly referred to as Basel III, implemented several changes to the U.S. regulatory capital framework required by the Dodd-Frank Act.

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The Basel III final rule, effective January 1, 2015, established a new CET1 requirement and increased the minimum tier 1 capital requirement to 6.0%. In addition, all banking organizations must maintain a CCB consisting of CET1 capital in an amount equal to 2.5% of risk-weighted assets in order to avoid restrictions on their ability to make capital distributions and to pay certain discretionary bonus payments to executive officers. The CCB effectively increased the minimum CET1 capital, tier 1 capital, and total capital ratios for U.S. banking organizations to 7.0%, 8.5%, and 10.5%, respectively, as of January 1, 2019.

As required by the Basel III final rule, capital instruments such as trust preferred securities and cumulative preferred shares have been phased out of tier 1 capital for banking organizations that had $15 billion or more in total consolidated assets as of December 31, 2009, and grandfathered as tier 1 capital such instruments issued by smaller entities prior to May 19, 2010 (provided they do not exceed 25% of tier 1 capital). The Company’s trust preferred securities currently are grandfathered under this provision.

Prompt Corrective Action: The Bank’s capital categories are determined for the purpose of applying the “prompt corrective action” rules described below and may be taken into consideration by banking regulators in evaluating proposals for expansion or new activities. They are not necessarily an accurate representation of a bank’s overall financial condition or prospects for other purposes. A failure to meet the capital guidelines could subject the Bank to a variety of enforcement actions under those rules, including the issuance of a capital directive, the termination of deposit insurance by the FDIC, a prohibition on the taking of brokered deposits, and other restrictions on its business. As described below, the FDIC also can impose other substantial restrictions on banks that fail to meet applicable capital requirements.

Federal law establishes a system of prompt corrective action to resolve the problems of undercapitalized banks. Under this system, the FDIC has established five capital categories (“well-capitalized,” “adequately capitalized,” “undercapitalized,” “significantly undercapitalized,” and “critically undercapitalized”) and is required to take various mandatory supervisory actions, and is authorized to take other discretionary actions with respect to banks in the three undercapitalized categories. The severity of any such actions taken will depend upon the capital category in which a bank is placed. Generally, subject to a narrow exception, current federal law requires the FDIC to appoint a receiver or conservator for a bank that is critically undercapitalized.

The following table summarizes the prompt corrective action categories:

Prompt Corrective Action Category	Total Risk-Based Capital	Tier 1 Risk-Based Capital	Common Equity Tier 1 Risk-Based Capital	Tier 1 Leverage Ratio
Well-capitalized	10.0%	8.0%	6.5%	5.0%
Adequately capitalized	8.0%	6.0%	4.5%	4.0%
Undercapitalized	< 8.0%	< 6.0%	< 4.5%	< 4.0%
Significantly undercapitalized	< 6.0%	< 4.0%	< 3.0%	< 3.0%
Critically undercapitalized	Tangible equity / Total assets ≤ 2.0%

A bank that becomes “undercapitalized,” “significantly undercapitalized,” or “critically undercapitalized” is required to submit an acceptable capital restoration plan to the FDIC. An “undercapitalized” bank also is generally prohibited from increasing its average total assets, making acquisitions, establishing new branches, or engaging in any new line of business, except in accordance with an accepted capital restoration plan or with the approval of the FDIC. Also, the FDIC may treat an “undercapitalized” bank as being “significantly undercapitalized” if it determines that those actions are necessary to carry out the purpose of the law.

All of the Bank’s capital ratios were at levels that qualify it to be “well-capitalized” for regulatory purposes as of December 31, 2020.

Consumer Financial Protection Bureau: The Dodd-Frank Act centralized responsibility for consumer financial protection including implementing, examining and enforcing compliance with federal consumer financial laws with the CFPB. Depository institutions with less than $10 billion in assets, such as our Bank, will be subject to rules

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promulgated by the CFPB, but will continue to be examined and supervised by federal banking regulators for consumer compliance purposes.

The CFPB has broad rule-making authority for a wide range of consumer protection laws that apply to all banks, including the authority to prohibit unfair, deceptive or abusive acts and practices. In addition, the Dodd-Frank Act enhanced the regulation of mortgage banking and gave to the CFPB oversight of many of the core laws which regulate the mortgage industry and the authority to implement mortgage regulations. Any new regulations adopted by the CFPB may significantly impact consumer mortgage lending and servicing.

The Bank is also subject to other laws and regulations intended to protect consumers in transactions with depository institutions, as well as other laws or regulations affecting customers of financial institutions generally. While the list set forth herein is not exhaustive, these laws and regulations include the Truth in Lending Act, the Truth in Savings Act, the Electronic Funds Transfer Act, the Expedited Funds Availability Act, the Equal Credit Opportunity Act, the Fair Housing Act, the Real Estate Settlement and Procedures Act, the Fair Credit Reporting Act and the Federal Trade Commission Act, among others. These laws and regulations mandate certain disclosure requirements and regulate the manner in which financial institutions must deal with customers when taking deposits or making loans to such customers. The Bank must comply with the applicable provisions of these consumer protection laws and regulations as part of its ongoing customer relations.

UDAP and UDAAP: Banking regulatory agencies have increasingly used a general consumer protection statute to address “unethical” or otherwise “bad” business practices that may not necessarily fall directly under the purview of a specific banking or consumer finance law. The law of choice for enforcement against such business practices has been Section 5 of the Federal Trade Commission Act - the primary federal law that prohibits unfair or deceptive acts or practices and unfair methods of competition in or affecting commerce (“UDAP” or “FTC Act”). “Unjustified consumer injury” is the principal focus of the FTC Act. Moreover, the UDAP provisions have been expanded under the Dodd-Frank Act to apply to “unfair, deceptive or abusive acts or practices” (“UDAAP”), which has been delegated to the CFPB for supervision. The CFPB has brought a variety of enforcement actions for violations of UDAAP provisions and CFPB guidance continues to evolve.

Mortgage Reform: The CFPB has adopted final rules implementing minimum standards for the origination of residential mortgages, including standards regarding a customer’s ability to repay, restricting variable-rate lending by requiring the ability to repay variable-rate loans be determined by using the maximum rate that will apply during the first five years of a variable-rate loan term, and making more loans subject to provisions for higher cost loans, new disclosures, and certain other revisions. While the Dodd-Frank Act allows borrowers to raise certain defenses to foreclosure if they receive any loan other than a “qualified mortgage” as defined by the CFPB, the Regulatory Relief Act provides certain presumptions of qualified mortgage status for banks with assets of less than $10 billion, subject to certain documentation and product issues.

Dividends by the Bank Subsidiary: Under Missouri law, the Bank may pay dividends to the Company only from a portion of its undivided profits and may not pay dividends if its capital is impaired. As an insured depository institution, federal law prohibits the Bank from making any capital distributions, including the payment of a cash dividend if it is “undercapitalized” or after making the distribution would become undercapitalized. If the FDIC believes the Bank is engaged in, or about to engage in, an unsafe or unsound practice, the FDIC may require, after notice and hearing, that the bank cease and desist from that practice. The FDIC has indicated that paying dividends that deplete a depository institution’s capital base to an inadequate level would be an unsafe and unsound banking practice. The FDIC has issued policy statements that provide that insured banks generally should pay dividends only from their current operating earnings. The Bank’s payment of dividends also could be affected or limited by other factors, such as events or circumstances which lead the FDIC to require that it maintain capital in excess of regulatory guidelines.

Transactions with Affiliates and Insiders: The Bank is subject to the provisions of Regulation W promulgated by the Federal Reserve, which encompasses Sections 23A and 23B of the Federal Reserve Act. Regulation W places limits and conditions on the amount of loans or extensions of credit to, investments in, or certain other transactions with, affiliates and on the amount of advances to third parties collateralized by the securities or obligations of

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affiliates. Regulation W also prohibits, among other things, an institution from engaging in certain transactions with certain affiliates unless the transactions are on terms substantially the same, or at least as favorable to such institution or its subsidiaries, as those prevailing at the time for comparable transactions with nonaffiliated companies. Federal law also places restrictions on the Bank’s ability to extend credit to its executive officers, directors, principal shareholders and their related interests. These extensions of credit must be made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated third parties; and must not involve more than the normal risk of repayment or present other unfavorable features.

Community Reinvestment Act: The Community Reinvestment Act (“CRA”) requires that, in connection with examinations of financial institutions within its jurisdiction, the FDIC is required to evaluate the record of the financial institutions in meeting the credit needs of their local communities, including low and moderate income neighborhoods, consistent with the safe and sound operation of those institutions. These factors are also considered in evaluating mergers, acquisitions, and applications to open a branch or facility. The Bank has a satisfactory rating under CRA.

In April 2018, the U.S. Department of Treasury issued a memorandum to the federal banking regulators recommending changes to the CRA’s regulations to reduce their complexity and associated burden on banks, and in December 2019, the FDIC and the Office of the Comptroller of the Currency proposed for public comment rules to modernize the agencies' regulations under the CRA. In September 2020, the Federal Reserve Board released for public comment its proposed rules to modernize CRA regulations. We will continue to evaluate the impact of any changes to the CRA regulations.

USA PATRIOT Act: The Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (the “USA PATRIOT Act”) requires each financial institution to: (i) establish an anti-money laundering program; (ii) establish due diligence policies, procedures and controls with respect to its private banking accounts and correspondent banking accounts involving foreign individuals and certain foreign banks; and (iii) implement certain due diligence policies, procedures and controls with regard to correspondent accounts in the United States for, or on behalf of, a foreign bank that does not have a physical presence in any country. In addition, the USA PATRIOT Act contains a provision encouraging cooperation among financial institutions, regulatory authorities and law enforcement authorities with respect to individuals, entities and organizations engaged in, or reasonably suspected of engaging in, terrorist acts or money laundering activities.

Commercial Real Estate Lending: The Bank’s lending operations may be subject to enhanced scrutiny by federal banking regulators based on its concentration of commercial real estate loans. CRE loans generally include land development, construction loans, and loans secured by multifamily property, and non-farm, nonresidential real property where the primary source of repayment is derived from rental income associated with the property. On December 6, 2006, the federal banking regulators issued final guidance to remind financial institutions of the risk posed by CRE lending concentrations. The guidance prescribes the following guidelines for its examiners to help identify institutions that are potentially exposed to significant CRE risk, including concentrations in certain types of CRE that may warrant greater supervisory scrutiny: total reported loans for construction, land development, and other land represent 100% or more of the institutions total capital; or total commercial real estate loans represent 300% or more of the institution’s total capital, and the outstanding balance of the institution’s commercial real estate loan portfolio has increased by 50% or more.

Volcker Rule: On December 10, 2013, the federal regulators adopted final regulations to implement the proprietary trading and private fund prohibitions of the Volcker Rule under the Dodd-Frank Act. Under the final regulations, banking entities are generally prohibited, subject to significant exceptions from: (i) short-term proprietary trading as principal in securities and other financial instruments, and (ii) sponsoring or acquiring or retaining an ownership interest in private equity and hedge funds. Revisions to the Volcker Rule in 2019, that become effective in 2020, simplifies and streamlines the compliance requirements for banks that do not have significant trading activities. The Regulatory Relief Act provided an exemption from the above restrictions for banks with less than $10 billion in assets. In 2020, the OCC, Federal Reserve, FDIC, SEC and Commodity Futures Trading Commission finalized

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further amendments to the Volcker Rule. The amendments include new exclusions from the Volcker Rule’s general prohibitions on banking entities investing in and sponsoring private equity funds, hedge funds, and certain other investment vehicles (collectively “covered funds”). The amendments in the final rule, which became effective on October 1, 2020, clarify and expand permissible banking activities and relationships under the Volcker Rule.

Governmental Policies

The operations of the Company and its subsidiaries are affected not only by general economic conditions, but also by the policies of various regulatory authorities. In particular, the Federal Reserve regulates monetary policy and interest rates in order to influence general economic conditions. These policies have a significant influence on overall growth and distribution of loans, investments and deposits and affect interest rates charged on loans or paid for deposits. Federal Reserve monetary policies have had a significant effect on the operating results of all financial institutions in the past and may continue to do so in the future.

Human Capital Management

We pride ourselves in creating an open, diverse, and transparent culture that celebrates teamwork and recognizes associates at all levels. We expect and encourage participation and collaboration, and understand that we need each other to be successful. We value accountability because it is essential to our success, and we accept our responsibility to hold ourselves and others accountable for meeting shareholder commitments and achieving exceptional standards of performance. We also believe in work/life balance for our associates.

Because quality of life is important to the health of our Company and associates, we are committed to creating a culture that emphasizes and encourages wellness. Our wellness program is designed to help associates avoid illness while improving and maintaining their general health. Each year, we provide a variety of information and promote health challenges to educate associates on proper diet, exercise, stress management and prevention strategies. Annual health screenings are provided to all associates at no charge.

Soliciting Feedback. We conduct associate surveys to ensure that we understand what is important to our associates, including their opinions on a variety of topics. We have made changes as a result of the survey results including the adoption of a volunteer time-off policy, a parental leave policy and improvements to internal communication processes. Our efforts are being recognized. For the past three years, the Bank was included in the “Best Banks to Work for” by American Banker magazine for our dedication to employee satisfaction. In 2020, a significant portion of our associates responded to one or more surveys of our associates.

Staffing Model. The majority of our employees are regular full-time associates. We also employ regular part-time associates and some seasonal/temporary associates.

Diversity & Inclusion. We believe that diversity of thought and experiences results in better outcomes and empowers our associates to make more meaningful contributions within our company and communities. We continue to learn and grow, and our current initiatives reflect our ongoing efforts around a more diverse, inclusive and equitable workplace.

In 2012, we formed a Diversity/Inclusion (DI) Council, designed to help educate and engage associates on a wide variety of inclusion topics — from ageism to race. In 2020, the DI Council was renamed, refocused and refreshed resulting in the DEI (Diversity, Equity, Inclusion) Leadership Council. As part of these focused efforts, we elevated the DEI Leadership Council to a formal internal leadership committee. In addition, we have designed our associate development programs with a view towards helping to create a more inclusive environment by giving associates of all backgrounds additional opportunities to succeed and contribute. These programs include:

•Career Acceleration Program - This program allows participants to experience a wide range of assignments by rotating through the various product partners and operational areas of the Company. Upon successful completion of the program, the associate is placed in a role that aligns with their strengths and talents and helps meet the needs of our organization.

•Gateway to a Banking Career - This program provides training for jobs as tellers and customer service representatives, job interview practice and job placement assistance. It is a joint effort with two other St.

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Louis-based financial institutions. Upon successful completion of the program, participants receive a small stipend and are guaranteed an interview with one of the program sponsors.

•Empower & Enlighten - This program pairs our senior leaders with mid-level women and minority associates in order to foster an environment of mutual understanding, to remove generational boundaries and implicit biases, and to build the bridges that connect people to opportunity.

•Business Resource Groups - These groups bring together associates with a shared identity, interest or goal to create community and opportunities for improvement and engagement.

We track the representation of women and racial/ethnic minorities because we believe that diversity helps us build more effective teams and improve our client experience, leading to greater success for the Company and our shareholders. Our gender and race data is monitored by the Board. We are proud of our progress in this area, but we continue to strive to further diversify our workforce and strengthen our culture of inclusion.

Benefits. We are committed to offering a competitive total compensation package. We regularly compare compensation and benefits with peer companies and market data, making adjustments as needed to ensure compensation stays competitive. We also offer a wide array of benefits for our associates and their families including medical, dental and vision benefits as well as life insurance and short-term disability for all full-time associates.

Focusing on a Safe and Healthy Workplace. We value our associates and are committed to providing a safe and healthy workplace. Our formal Health & Safety (HS) Program consists of policies, procedures, and guidelines, and mandates all tasks be conducted in a safe and efficient manner, while complying with local, state and federal health and safety regulations, and special safety concerns. The HS program encompasses all facilities and operations and addresses on-site emergencies, injuries and illnesses, evacuation procedures, cell phone usage and general safety rules. Our employees are required to comply with company safety rules and expectations and are required to certify their understanding and compliance with company rules. In response to the coronavirus pandemic, we created an oversight committee and established a resource center to provide updates on our action plans, policies, and safety training.

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ITEM 1A: RISK FACTORS

An investment in our common shares is subject to risks inherent to our business. Before making an investment decision, you should carefully consider the risks and uncertainties described below together with all of the other information included or incorporated by reference in this report. The value of our common shares could decline due to any of these risks, and you could lose all or part of your investment.

Risks Relating to the Pandemic

The global coronavirus (COVID-19) pandemic has led to periods of significant volatility in financial, commodities and other markets and could harm our business and results of operations.

Given the ongoing and dynamic nature of the coronavirus (COVID-19) pandemic, it is difficult to predict the impact of the pandemic on our business, and there is no guarantee that our efforts to address or mitigate the adverse impacts of the COVID-19 pandemic will be effective in the future. The impact to date has included periods of significant volatility in financial, commodities and other markets. This volatility, if it continues, could have an adverse impact on our customers and on our business, financial condition and results of operations as well as our growth strategy.

Our business is dependent upon the willingness and ability of our customers to conduct banking and other financial transactions. The spread of COVID-19 has caused and could continue to cause severe disruptions in the U.S. economy at large, and has resulted and may continue to result in disruptions to our customers’ businesses, and a decrease in consumer confidence and business generally. In addition, actions by US federal, state and local governments to address the pandemic, including travel bans, stay-at-home orders and school, business and entertainment venue closures, have had and may continue to have a significant adverse effect on our customers and the markets in which we conduct our business. The extent of further impacts resulting from the COVID-19 pandemic and other events beyond our control will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of the COVID-19 pandemic and actions taken to contain the COVID-19 or its impact, among others.

Disruptions to our customers could result in increased risk of delinquencies, defaults, foreclosures and losses on our loans as well as declines in wealth management revenues. The escalation of the pandemic may also negatively impact regional economic conditions for a period of time, resulting in declines in local loan demand, liquidity of loan guarantors, loan collateral (particularly in real estate), loan originations and deposit availability. If the global response to contain COVID-19 escalates or is unsuccessful, we could experience a material adverse effect on our business, financial condition, results of operations and cash flows.

The Company has implemented restrictions on employee business travel, conversion of in-person meetings to virtual, and a work-from-home mandate. The Company has also worked with its customers to implement appropriate loan deferral strategies in certain circumstances. These actions in response to the COVID-19 pandemic, and similar actions by our vendors and business partners, have not materially impaired our ability to support our employees, conduct our business and serve our customers, but there is no assurance these actions will be sufficient to successfully mitigate the risks presented by COVID-19 or that our ability to operate will not be materially affected going forward. For instance, our business operations may be disrupted if key personnel or significant portions of our employees are unable to work effectively, including because of illness, quarantines, government actions, or other restrictions in connection with the COVID-19 pandemic. Similarly, if any of our vendors or business partners become unable to continue to provide their products and services, which we rely upon to maintain our day-to-day operations, our ability to serve our customers could be impacted.

Unpredictable future developments related to or resulting from the COVID-19 pandemic could materially and adversely affect our business and results of operations.

Because there have been no comparable recent global pandemics that resulted in similar global impact, we do not yet know the full extent of the COVID-19 pandemic’s effects on our business, operations, or the global economy as a whole. Any future development will be highly uncertain and cannot be predicted, including the scope and duration of the pandemic, the effectiveness of our work from home arrangements, third party providers’ ability to support our operation, and any actions taken by governmental authorities and other third parties in response to the pandemic.

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We are continuing to monitor the COVID-19 pandemic and related risks, although the rapid development and fluidity of the situation precludes any specific prediction as to its ultimate impact on us. However, if the COVID-19 outbreak continues to spread or otherwise results in a continuation or worsening of the current economic and commercial environments, our business, financial condition, results of operations and cash flows as well as our regulatory capital and liquidity ratios could be materially adversely affected and many of the risks described in this Annual Report on Form 10-K may be heightened.

Risks Relating to Economic and Market Conditions

An economic downturn could adversely affect our financial condition, results of operations or cash flows.

The U.S. economy experienced a recession during 2020 and unemployment rates remain elevated as a result of the COVID-19 pandemic. A continuation of those recessionary conditions and/or negative developments in the domestic and international credit markets may significantly affect the markets in which we do business, the value of our loans and investments, and our ongoing operations, costs and profitability. If the communities in which we operate do not grow, or if prevailing economic conditions locally or nationally are unfavorable, our business may not succeed. Unpredictable economic conditions may have an adverse effect on the quality of our loan portfolio and our financial performance. Adverse changes in the economies in our market areas may have a material adverse effect on our financial condition, results of operations or cash flows. As a community bank, we bear increased risk of unfavorable local economic conditions. Moreover, we cannot give any assurance that we will benefit from any market growth or favorable economic conditions in our primary market areas even if they do occur.

We face potential risk from changes in governmental monetary policies.

The Company’s earnings are affected by domestic economic conditions and the monetary and fiscal policies of the United States government and its agencies. The Federal Reserve’s monetary policies have had, and are likely to continue to have, an important impact on the operating results of commercial banks through its power to implement national monetary policy in order, among other things, to curb inflation or combat a recession. The monetary policies of the Federal Reserve affect the levels of bank loans, investments, and deposits through its control over the issuance of United States government securities, its regulation of the discount rate applicable to member banks, and its influence over reserve requirements to which member banks are subject. The Company cannot predict the nature or impact of future changes in monetary and fiscal policies.

Legal, Regulatory and Tax Risks

Our participation in the SBA PPP loan program exposes us to risks related to noncompliance with the PPP, as well as litigation risk related to our administration of the PPP loan program, which could have a material adverse impact on our business, financial condition and results of operations.

The Company is a participating lender in the PPP, a loan program administered through the SBA, that was created to help eligible businesses, organizations and self-employed persons fund their operational costs during the COVID-19 pandemic. Under this program, the SBA guarantees 100% of the amounts loaned under the PPP. The PPP opened on April 3, 2020 and was extended in January 2021; however, because of the short window between the passing of the CARES Act and the initial opening of the PPP, there is some ambiguity in the laws, rules and guidance regarding the operation of the PPP, which exposes the Company to risks relating to noncompliance with the PPP. For instance, other financial institutions have experienced litigation related to their process and procedures used in processing applications for the PPP. Any financial liability, litigation costs or reputational damage caused by PPP related litigation could have a material adverse impact on our business, financial condition and results of operations. In addition, the Company may be exposed to credit risk on PPP loans if a determination is made by the SBA that there is a deficiency in the manner in which the loan was originated, funded, or serviced. If a deficiency is identified, the SBA may deny its liability under the guaranty, reduce the amount of the guaranty, or, if it has already paid under the guaranty, seek recovery of any loss related to the deficiency from the Company.

SBA lending is an important part of our business since the acquisition of Seacoast. Our SBA lending program is dependent upon the U.S. federal government, and we face specific risks associated with originating SBA loans.

Our SBA lending program is dependent upon the U.S. federal government. As an approved participant in the SBA Preferred Lender’s Program (a “Preferred Lender”), we enable our clients to obtain SBA loans without being subject to the potentially lengthy SBA approval process necessary for lenders that are not Preferred Lenders. The SBA periodically reviews the lending operations of participating lenders to assess, among other things, whether the

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lender exhibits prudent risk management. When weaknesses are identified, the SBA may request corrective actions or impose enforcement actions, including revocation of the Preferred Lender status. If we lose our status as a Preferred Lender, we may lose some or all of our customers to lenders who are Preferred Lenders, and as a result we could experience a material adverse effect to our financial results. Any changes to the SBA program, including but not limited to changes to the level of guarantee provided by the federal government on SBA loans, changes to program-specific rules impacting volume eligibility under the guaranty program, as well as changes to the program amounts authorized by Congress, may also have a material adverse effect on our business. In addition, any default by the U.S. government on its obligations or any prolonged government shutdown could, among other things, impede our ability to originate SBA loans or sell such loans in the secondary market, which could materially adversely affect our business, results of operations, and financial condition. When we originate SBA loans, we incur credit risk on the non-guaranteed portion of the loans, and if a customer defaults on a loan, we share any loss and recovery related to the loan pro-rata with the SBA. If the SBA establishes that a loss on an SBA guaranteed loan is attributable to significant technical deficiencies in the way the loan was originated, funded, or serviced by us, the SBA may seek recovery of the principal loss related to the deficiency.

Changes in government regulation and supervision may increase our costs or impact our ability to operate in certain lines of business.

Our operations are subject to extensive regulation by federal, state and local governmental authorities and are subject to various laws and judicial and administrative decisions imposing requirements and restrictions on part or all of our operations. Banking regulations are primarily intended to protect depositors’ funds, federal deposit insurance funds and the banking system as a whole, rather than shareholders. Because our business is highly regulated, the laws, rules, regulations and supervisory guidance and policies applicable to us are subject to regular modification and change and could result in an adverse impact on our results of operations.

We are subject to numerous laws designed to protect consumers, including the CRA and fair lending laws, and failure to comply with these laws could lead to a wide variety of sanctions.

The CRA, the Equal Credit Opportunity Act, the Fair Housing Act and other fair lending laws and regulations impose nondiscriminatory lending requirements on financial institutions. The CFPB, the U.S. Department of Justice and other federal agencies are responsible for enforcing these laws and regulations. A successful regulatory challenge to an institution’s performance under the CRA or fair lending laws and regulations could result in a wide variety of sanctions, including damages and civil money penalties, injunctive relief, restrictions on mergers and acquisitions activity, restrictions on expansion, and restrictions on entering new business lines. Private parties may also have the ability to challenge an institution’s performance under fair lending laws in private class action litigation. Such actions could have a material adverse effect on our business, financial condition, results of operations and future prospects.

We are subject to compliance with the Bank Secrecy Act and other anti-money laundering statutes and regulations, and failure to comply with these laws could lead to a wide variety of sanctions.

The Bank Secrecy Act, the USA PATRIOT Act of 2001, and other laws and regulations require financial institutions, among other duties, to institute and maintain an effective anti-money laundering program and file suspicious activity and currency transaction reports when appropriate. In addition to other bank regulatory agencies, the federal Financial Crimes Enforcement Network of the Department of the Treasury is authorized to impose significant civil money penalties for violations of those requirements and has recently engaged in coordinated enforcement efforts with the state and federal banking regulators, as well as the U.S. Department of Justice, CFPB, Drug Enforcement Administration, and Internal Revenue Service. We are also subject to increased scrutiny of compliance with the rules enforced by the Office of Foreign Assets Control of the Department of the Treasury regarding, among other things, the prohibition of transacting business with, and the need to freeze assets of, certain persons and organizations identified as a threat to the national security, foreign policy or economy of the United States. If our policies, procedures and systems are deemed deficient, we would be subject to liability, including fines and regulatory actions, which may include restrictions on our ability to pay dividends and the necessity to obtain regulatory approvals to proceed with certain aspects of our business plan, including any acquisition plans. Failure to maintain and implement adequate programs to combat money laundering and terrorist financing could also have

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serious reputational consequences for us. Any of these results could have a material adverse effect on our business, financial condition, results of operations and future prospects.

If the Company or the Bank incur losses that erode its capital, it may become subject to enhanced regulation or supervisory action.

Under federal and state laws and regulations pertaining to the safety and soundness of insured depository institutions, the Missouri Division of Finance, the Federal Reserve Board, and the FDIC have the authority to compel or restrict certain actions if the Company’s or the Bank’s capital should fall below adequate capital standards as a result of future operating losses, or if its bank regulators determine that it has insufficient capital. Among other matters, the corrective actions include but are not limited to requiring affirmative action to correct any conditions resulting from any violation or practice; directing an increase in capital and the maintenance of specific minimum capital ratios; restricting the Bank’s operations; limiting the rate of interest the bank may pay on brokered deposits; restricting the amount of distributions and dividends and payment of interest on its trust preferred securities; requiring the Bank to enter into informal or formal enforcement orders, including memoranda of understanding, written agreements and consent or cease and desist orders to take corrective action and enjoin unsafe and unsound practices; removing officers and directors and assessing civil monetary penalties; and taking possession of and closing and liquidating the Bank. These actions may limit the ability of the Bank or Company to execute its business plan and thus can lead to an adverse impact on the results of operations or financial position.

Financial Risks

Our allowance for credit losses may not be adequate to cover actual loan losses.

We maintain an allowance for credit losses, which is a reserve established through a provision for credit losses charged to expense, that represents management’s estimate of probable losses within the existing portfolio of loans. The allowance, in the judgment of management, is sufficient to reserve for estimated credit losses and risks inherent in the loan portfolio. We continue to monitor the adequacy of our loan credit allowance and may need to increase it if economic conditions deteriorate. In addition, bank regulatory agencies periodically review our allowance for credit losses and may require an increase in the provision for credit losses or the recognition of further loan charge-offs, based on judgments that can differ somewhat from those of our own management. In addition, if charge-offs in future periods exceed the allowance for loan losses (i.e., if the loan allowance is inadequate), we may need additional credit loss provisions to increase the allowance for loan losses. Additional provisions to increase the allowance for credit losses, should they become necessary, would result in a decrease in net income and a reduction in capital, and may have a material adverse effect on our financial condition and results of operations.

Increased regulatory oversight, uncertainty relating to the LIBOR calculation process and potential phasing out of LIBOR after 2021 may adversely affect the results of our operations. 

On July 27, 2017, the United Kingdom’s Financial Conduct Authority, which regulates the LIBOR, announced that it intends to stop persuading or compelling banks to submit rates for the calculation of LIBOR after 2021. The announcement indicates that the continuation of LIBOR on the current basis cannot and will not be guaranteed after 2021. It is impossible to predict whether and to what extent banks will continue to provide LIBOR submissions to the administrator of LIBOR, whether LIBOR rates will cease to be published or supported before or after 2021 or whether any additional reforms to LIBOR may be enacted in the United Kingdom or elsewhere. Efforts in the United States to identify a set of alternative U.S. dollar reference interest rates include proposals by the ARRC of the Federal Reserve Board and the Federal Reserve Bank of New York. Uncertainty as to the nature of alternative reference rates and as to potential changes in other reforms to LIBOR may adversely affect LIBOR rates and the value of LIBOR-based loans, and to a lesser extent securities in our portfolio, and may impact the availability and cost of hedging instruments and borrowings, including the rates we pay on our subordinated debentures. The Company has material contracts that are indexed to LIBOR. If LIBOR rates are no longer available, any successor or replacement interest rates may perform differently and we may incur significant costs to transition both our borrowing arrangements and the loan agreements with our customers from LIBOR, which may have an adverse effect on our results of operations. The impact of alternatives to LIBOR on the valuations, pricing and operation of our financial instruments is not yet known.

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Our business is subject to interest rate risk and variations in interest rates may negatively affect our financial performance.

A substantial portion of our income is derived from the differential or “spread” between the interest earned on loans, investment securities, and other interest-earning assets, and the interest paid on deposits, borrowings, and other interest-bearing liabilities. Because of the differences in the maturities and repricing characteristics of our interest-earning assets and interest-bearing liabilities, changes in interest rates may not produce equivalent changes in interest income earned on interest-earning assets and interest paid on interest-bearing liabilities. Our assets and liabilities may react differently to changes in overall interest rates or conditions. Significant fluctuations in market interest rates could materially and adversely affect not only our net interest spread, but also our asset quality and loan origination volume, deposits, funding availability, and/or net income.

We may not be able to maintain our historical rate of growth or profitability, which could have a material adverse effect on our ability to successfully implement our business strategy.

Successful growth requires that we follow adequate loan underwriting standards, balance loan and deposit growth without increasing interest rate risk or compressing our net interest margin, maintain adequate capital at all times, produce investment performance results competitive with our peers and benchmarks, further diversify our revenue sources, meet the expectations of our clients and hire and retain qualified employees. If we do not manage our growth successfully, then our business, results of operations or financial condition may be adversely affected.

We may incur impairments to goodwill.

As of December 31, 2020, we had $261 million recorded as goodwill. We evaluate our goodwill for impairment at least annually. Significant negative industry or economic trends, including the lack of recovery in the market price of our common stock, or reduced future cash flows or disruptions to our business, could result in impairments to goodwill. Our valuation methodology for assessing impairment requires management to make judgments and assumptions based on historical experience and to rely on projections of future operating performance. We operate in competitive environments and projections of future operating results and cash flows may vary significantly from actual results. If our analysis results in impairment to goodwill, we would be required to record an impairment charge to earnings in our financial statements during the period in which such impairment is determined to exist. Any such change could have a material adverse effect on our results of operations and stock price.

Declines in asset values may result in impairment charges and adversely impact the value of our investments and our financial performance and capital.

We hold an investment portfolio that includes, but is not limited to, government securities and agency mortgage-backed securities. Factors beyond our control can significantly influence the fair value of securities in our portfolio and can cause potential adverse changes to the fair value of these securities. These factors include, but are not limited to, rating agency actions in respect to the securities, defaults by the issuer or with respect to the underlying securities, changes in market interest rates and/or spread, and instability and other factors impacting the capital markets. Any of these factors, among others, could cause other-than-temporary impairments and realized or unrealized losses in future periods and declines in other comprehensive income (loss), which could have a material adverse effect on our business, results of operations, financial condition and future prospects. The process for determining whether impairment of a security is other-than-temporary often requires complex, subjective judgments about whether there has been significant deterioration in the financial condition of the issuer, whether management has the intent or ability to hold a security for a period of time sufficient to allow for any anticipated recovery in fair value, the future financial performance and liquidity of the issuer and any collateral underlying the security and other relevant factors.

We invest in mortgage-backed obligations and such obligations have been, and are likely to continue to be, impacted by market dislocations, declining home values and prepayment risk, which may lead to volatility in cash flow and market risk and declines in the value of our investment portfolio.

Our investment portfolio largely consists of mortgage-backed obligations primarily secured by pools of mortgages on single-family residences. The value of mortgage-backed obligations in our investment portfolio may fluctuate for several reasons, including (i) delinquencies and defaults on the mortgages underlying such obligations, due in part to high unemployment rates, (ii) falling home prices, (iii) lack of a liquid market for such obligations, (iv)

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uncertainties in respect of government-sponsored enterprises such as the Federal National Mortgage Association (“Fannie Mae”) or the Federal Home Loan Mortgage Corporation (“Freddie Mac”), which guarantee such obligations, and (v) the expiration of government stimulus initiatives. If the value of homes were to materially decline, the fair value of the mortgage-backed obligations in which we invest may also decline. Any such decline in the fair value of mortgage-backed obligations, or perceived market uncertainty about their fair value, could adversely affect our financial position and results of operations. In addition, when we acquire a mortgage-backed security, we anticipate that the underlying mortgages will prepay at a projected rate, thereby generating an expected yield. Prepayment rates generally increase as interest rates fall and decrease when rates rise, but changes in prepayment rates are difficult to predict. In light of historically low interest rates, many of our mortgage-backed securities have a higher interest rate than prevailing market rates, resulting in a premium purchase price. In accordance with applicable accounting standards, we amortize the premium over the expected life of the mortgage-backed security. If the mortgage loans securing the mortgage-backed security prepay more rapidly than anticipated, we would have to amortize the premium on an accelerated basis, which would thereby adversely affect our profitability.

Credit and Liquidity Risks

Our loan and deposit portfolios are in certain markets which could result in increased concentration risk.

A majority of our loans are to businesses and individuals in the St. Louis, Kansas City, Phoenix, Los Alamos, Albuquerque, Santa Fe, San Diego, and Las Vegas metropolitan areas. These loans are funded by deposits in the same metropolitan areas. The regional economic conditions in areas where we conduct our business have an impact on the demand for our products and services as well as the ability of our clients to repay loans, the value of the collateral securing loans, and the stability of our deposit funding sources. Consequently, a decline in local economic conditions may adversely affect our earnings.

There are material risks involved in commercial lending that could adversely affect our business.

Our business plan calls for continued efforts to increase our assets invested in commercial loans. Our commercial loans include loans that are secured by real estate (commercial property, multi-family residential property, 1-4 family residential property, and construction and land). Commercial loans generally involve a higher degree of credit risk than residential mortgage loans due, in part, to their larger average size and less marketable collateral. In addition, unlike residential mortgage loans, commercial loans generally depend on the cash flow of the borrower’s business to service the debt. Adverse economic conditions or other factors affecting our target markets may have a greater adverse effect on us than on other financial institutions that have a more diversified client base. Increases in non-performing commercial loans could result in operating losses, impaired liquidity and erosion of our capital, and could have a material adverse effect on our financial condition and results of operations. Credit market tightening could adversely affect our commercial borrowers through declines in their business activities and adversely impact their overall liquidity through the diminished availability of other borrowing sources or otherwise.

Our loan portfolio includes loans secured by real estate, which could result in increased credit risk.

A portion of our portfolio is secured by real estate, and thus we face a high degree of risk from a downturn in our real estate markets. If real estate values would decline in our markets, our ability to recover on defaulted loans for which the primary reliance for repayment is on the real estate collateral by foreclosing and selling that real estate would then be diminished, and we would be more likely to suffer losses on defaulted loans.

Additionally, the state-specific foreclosure laws of the jurisdictions in which our real estate collateral is located may hinder our ability to timely or fully recover on defaulted loans secured by property in certain states. For example, some states in which our collateral is located are judicial foreclosure states. In judicial foreclosure states, all foreclosures must be processed through the court system. Due to this process, it may take up to a year or longer to foreclose on real estate collateral located in those states. Our ability to recover on defaulted loans secured by property in those states may be delayed and our recovery efforts are lengthened due to this process. In addition, other states have anti-deficiency statutes with regards to certain types of residential mortgage loans. Our ability to recover on defaulted loans secured by residential mortgages in anti-deficiency statute states may be limited to the fair value of the real estate securing the loan at the time of foreclosure.

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Our commercial and industrial loans and sponsor finance loans are underwritten based primarily on cash flow, profitability and enterprise value of the client and are not fully covered by the value of tangible assets or collateral of the client. Consequently, if any of these transactions becomes non-performing, we could experience significant losses.

Cash flow lending involves lending money to a client based primarily on the expected cash flow, profitability and enterprise value of a client, with the value of any tangible assets as secondary protection. In some cases, these loans may have more leverage than traditional bank debt. In the case of our senior cash flow loans, we generally take a lien on substantially all of a client’s assets, but the value of those assets is typically substantially less than the amount of money we advance to the client under a cash flow transaction. In addition, some of our cash flow loans may be viewed as stretch loans, meaning they may be at leverage multiples that exceed traditional accepted bank lending standards for senior cash flow loans. Thus, if a cash flow transaction becomes non-performing, our primary recourse to recover some or all of the principal of our loan or other debt product would be to force the sale of all or part of the company as a going concern. Additionally, we may obtain equity ownership in a borrower as a means to recover some or all of the principal of our loan. The risks inherent in cash flow lending include, among other things:

•reduced use of or demand for the client’s products or services and, thus, reduced cash flow of the client to service the loan and other debt product as well as reduced value of the client as a going concern;

•inability of the client to manage working capital, which could result in lower cash flow;

•inaccurate or fraudulent reporting of our client’s positions or financial statements; and

•our client’s poor management of their business.

Additionally, many of our clients use the proceeds of our cash flow transactions to make acquisitions. Poorly executed or poorly conceived acquisitions can burden management, systems and the operations of the existing business, causing a decline in both the client’s cash flow and the value of its business as a going concern. In addition, many acquisitions involve new management teams taking over day-to-day operations of a business. These new management teams may fail to execute at the same level as the former management team, which could reduce the cash flow of the client available to service the loan or other debt product, as well as reduce the value of the client as a going concern.

Widespread financial difficulties or downgrades in the financial strength or credit ratings of life insurance providers could lessen the value of the collateral securing our life insurance premium finance loans and impair our financial condition and liquidity.

One of the specialized products we offer is financing whole life insurance premiums utilized in high net worth estate planning. These loans are primarily secured by the insurance policies financed by the loans, i.e., the obligations of the life insurance providers under those policies. Nationally Recognized Statistical Rating Organizations (“NRSROs”) such as Standard & Poor’s, Moody’s and A.M. Best evaluate the life insurance providers that are the payors on the life insurance policies that we finance. The value of our collateral could be materially impaired in the event there are widespread financial difficulties among life insurance providers or the NRSROs downgrade the financial strength ratings or credit ratings of the life insurance providers, indicating the NRSROs’ opinion that the life insurance provider’s ability to meet policyholder obligations is impaired, or the ability of the life insurance provider to meet the terms of its debt obligations is impaired. The value of our collateral is also subject to the risk that a life insurance provider could become insolvent. In particular, if one or more large nationwide life insurance providers were to fail, the value of our portfolio could be significantly negatively impacted. A significant downgrade in the value of the collateral supporting our premium finance business could impair our ability to create liquidity for this business, which, in turn could negatively impact our ability to expand.

Our construction and land development loans are based upon estimates of costs and value associated with the completed project. These estimates may be inaccurate and we may be exposed to more losses on these projects than on other loans.

Construction, land acquisition and development lending involves additional risks because funds are advanced based upon the projected value of the project, which is inherently uncertain prior to the project’s completion. Because of the uncertainties inherent in estimating construction costs, as well as the fair value of the completed project and the effects of governmental regulation of real property and the general effects of the national and local economies, it is relatively difficult to evaluate accurately the total funds required to complete a project and the related loan-to-value

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ratio. As a result, construction loans often involve the disbursement of substantial funds with repayment dependent, in part, on the success of the ultimate project and the ability of the borrower to sell or lease the property, rather than the ability of the borrower or guarantor to repay principal and interest. If our appraisal of the value of the completed project proves to be overstated, we may have inadequate security for the repayment of the loan upon completion of construction of the project. If we are forced to foreclose on a project prior to or at completion due to a default, there can be no assurance that we will be able to recover all of the unpaid balance of, and accrued interest on, the loan or the related foreclosure, sale and holding costs. In addition, we may be required to fund additional amounts to complete the project and may have to hold the property for an unspecified period of time. If any of these events occur, our financial condition, results of operations and cash flows could be materially and adversely affected.

The ability of our borrowers to repay their loans may be adversely affected by an increase in market interest rates which could result in increased credit losses. These increased credit losses, where the Bank has retained credit exposure, could decrease our assets, net income and cash available.

The loans we make to our borrowers may bear interest at a variable or floating interest rate. When market interest rates increase, the amount of revenue borrowers need to service their debt also increases. Some borrowers may be unable to make their debt service payments. As a result, an increase in market interest rates will increase the risk of loan default. An increase in non-performing loans could result in a net loss of earnings from these loans, an increase in the provision for loan and covered loan losses, and an increase in loan charge-offs, all of which could have a material adverse effect on our business, financial condition and results of operations.

We are subject to environmental risks associated with owning real estate or collateral.

When a borrower defaults on a loan secured by real property, the Company may purchase the property in foreclosure or accept a deed to the property surrendered by the borrower. We may also take over the management of commercial properties whose owners have defaulted on loans. We may also own and lease premises where branches and other facilities are located. While we have lending, foreclosure and facilities guidelines intended to exclude properties with an unreasonable risk of contamination, hazardous substances could exist on some of the properties that the Company may own, manage or occupy. We face the risk that environmental laws could force us to clean up the properties at the Company’s expense. The cost of cleaning up or paying damages and penalties associated with environmental problems could increase our operating expenses. It may cost more to clean a property than the property is worth. We could also be liable for pollution generated by a borrower’s operations if the Company takes a role in managing those operations after a default. The Company may also find it difficult or impossible to sell these properties.

We may be obligated to indemnify certain counterparties in financing transactions we enter into pursuant to the New Markets Tax Credit Program.

We participate in and have previously been an “Allocatee” of the New Markets Tax Credit Program of the U.S. Department of the Treasury Community Development Financial Institutions Fund. Through this program, we provide our allocation to certain projects, which in turn for an equity investment from an Investor in the project generate federal tax credits to those investors. This equity, coupled with any debt or equity from the project sponsor is in turn invested in a certified community development entity for a period of at least seven years. Community development entities must use this capital to make loans to, or other investments in, qualified businesses in low-income communities in accordance with New Markets Tax Credit Program criteria. Investors receive an overall tax credit equal to 39% of their total equity investment, credited at a rate of five percent in each of the first three years and six percent in each of the final four years. However, after the exhaustion of all cure periods and remedies, the entire credit is subject to recapture if the certified community development entity fails to maintain its certified status, or if substantially all of the equity investment proceeds associated with the tax credits we allocate are no longer continuously invested in a qualified business that meets the New Markets Tax Credit Program criteria, or if the equity investment is redeemed prior to the end of the minimum seven-year term. As part of these financing transactions, we as the parent to Enterprise Financial CDE, LLC (“CDE”), provide customary indemnities to the tax credit investors, which require us to indemnify and hold harmless the investors in the event a credit recapture event occurs, unless the recapture is a result of action or inaction of the investor. No assurance can be given that these counterparties will not call upon us to discharge these obligations in the circumstances under which they are owed.

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If this were to occur, the amount we may be required to pay a bank investor could be substantial and could have a material adverse effect on our results of operations and financial condition.

If we fail to comply with requirements of the federal New Markets Tax Credit program, the U.S. Department of the Treasury Community Development Financial Institutions Fund could seek any remedies available under its Allocation Agreement with us, and we could suffer significant reputational harm and be subject to greater scrutiny from banking regulators.

Because we have been designated as an “Allocatee” under the New Markets Tax Credit Program, we are required to provide allocation fund qualifying projects under the New Markets Tax Credit Program, and we are responsible for monitoring those projects, ensuring their ongoing compliance with the requirements of the New Markets Tax Credit Program and satisfying the various recordkeeping and reporting requirements under the New Markets Tax Credit Program. If we default in our obligations under the New Markets Tax Credit Program, the U.S. Department of the Treasury may revoke our participation in any other CDFI Fund programs, reallocate the new market tax credits that were originally allocated to us, and take any other remedial actions that it is empowered to take under the Allocation Agreement they have entered into with us with respect to the New Markets Tax Credit Program, with the full range of such remedies being unknown. If we were to default under the New Markets Tax Credit Program, we could suffer negative publicity in the communities in which we operate, and we could face greater scrutiny from federal and state bank regulators, especially with regard to our compliance with the CRA. These developments could have a material adverse impact on our reputation, business, financial condition, results of operations and liquidity.

Liquidity risk could impair our ability to fund operations and meet debt coverage obligations, and jeopardize our financial condition.

Liquidity is essential to our business. We are a holding company and depend on our subsidiaries for liquidity needs, including debt coverage requirements. An inability to raise funds through deposits, borrowings, the sale of investment securities and other sources could have a substantial material adverse effect on our liquidity. Our access to funding sources in amounts that are adequate to finance our activities could be impaired by factors that affect us specifically or the financial services industry in general. Factors that could detrimentally impact our access to liquidity sources include but are not limited to a decrease in the level of our business activity due to a market downturn, our failure to remain well-capitalized, or adverse regulatory action against us. Our ability to acquire deposits or to borrow could also be impaired by factors that are not specific to us, such as a severe disruption of the financial markets or negative views and expectations about the prospects for the financial services industry as a whole.

Our utilization of brokered deposits could adversely affect our liquidity and results of operations.

Since our inception, we have utilized both brokered and non-brokered deposits as a source of funds to support our growing loan demand and other liquidity needs. As a bank regulatory supervisory matter, reliance upon brokered deposits as a significant source of funding is discouraged. Brokered deposits may not be as stable as other types of deposits, and, in the future, those depositors may not renew their deposits when they mature, or we may have to pay a higher rate of interest to keep those deposits or may have to replace them with other deposits or with funds from other sources. Additionally, if the Bank ceases to be categorized as “well-capitalized” for bank regulatory purposes, it would not be able to accept, renew or roll over brokered deposits without a waiver from the FDIC. Our inability to maintain or replace these brokered deposits as they mature could adversely affect our liquidity and results of operations. Further, paying higher interest rates to maintain or replace these deposits could adversely affect our net interest margin and results of operations.

By engaging in derivative transactions, we are exposed to additional credit and market risk in our banking business.

We use interest rate swaps to help manage our interest rate risk in our banking business from recorded financial assets and liabilities when they can be demonstrated to effectively hedge a designated asset or liability and the asset or liability exposes us to interest rate risk or risks inherent in client related derivatives. We may use other derivative financial instruments to help manage other economic risks, such as liquidity and credit risk, including exposures that arise from business activities that result in the receipt or payment of future known or uncertain cash amounts, the value of which are determined by interest rates. We also have derivatives that result from a service we provide to

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certain qualifying clients approved through our credit process, and therefore, these derivatives are not used to manage interest rate risk in our assets or liabilities. The Company does not enter into derivative financial instruments for trading purposes. Hedging interest rate risk is a complex process, requiring sophisticated models and routine monitoring. As a result of interest rate fluctuations, hedged assets and liabilities will appreciate or depreciate in market value. The effect of this unrealized appreciation or depreciation will generally be offset by income or loss on the derivative instruments that are linked to the hedged assets and liabilities. By engaging in derivative transactions, we are exposed to credit and market risk. If the counterparty fails to perform, credit risk exists to the extent of the fair value gain in the derivative. Market risk exists to the extent that interest rates change in ways that are significantly different from what we expected when we entered into the derivative transaction. The existence of credit and market risk associated with our derivative instruments could adversely affect our net interest income and, therefore, could have a material adverse effect on our business, financial condition, results of operations and future prospects.

Competitive and Reputational Risks

We face significant competition.

The financial services industry, including but not limited to, commercial banking, mortgage banking, consumer lending, and home equity lending, is highly competitive, and we encounter strong competition for deposits, loans, and other financial services in all of our market areas in each of our lines of business. Our principal competitors include other commercial banks, savings banks, savings and loan associations, mutual funds, money market funds, finance companies, trust companies, technology companies, insurers, credit unions, and mortgage companies among others. Many of our non-bank competitors are not subject to the same degree of regulation as us and have advantages over us in providing certain services. Many of our competitors are significantly larger than we are and have greater access to capital and other resources. Also, our ability to compete effectively in our business is dependent on our ability to adapt successfully to regulatory and technological changes within the banking and financial services industry, generally. If we are unable to compete effectively, we will lose market share and our income from loans and other products may diminish.

Our ability to compete successfully depends on a number of factors, including, among other things:

•the ability to develop, maintain, and build upon long-term client relationships based on top quality service and high ethical standards;

•the scope, relevance, and pricing of products and services, including technological innovations to those products and services, offered to meet client needs and demands;

•the rate at which we introduce new products and services relative to our competitors;

•client satisfaction with our level of service; and/or

•industry and general economic trends.

Failure to perform in any of these areas could significantly weaken our competitive position, and could adversely affect our growth and profitability, which, in turn, could have a material adverse effect on our financial condition and results of operations.

Technology is continually changing and we must effectively implement new innovations in providing services to our customers.

The financial services industry is undergoing rapid technological changes with frequent innovations in technology-driven products and services. In addition to better serving customers, the effective use of technology increases our efficiency and enables us to reduce costs. Our future success will depend, in part, upon our ability to address the needs of our customers using innovative methods, processes and technology to provide products and services that will satisfy customer demands for convenience as well as to create additional efficiencies in our operations as we continue to grow and expand our market areas. Many national vendors provide turn-key services to community banks, such as Internet banking and remote deposit capture, that allow smaller banks to compete with institutions that have substantially greater resources to invest in technological improvements. We may not be able, however, to effectively implement new technology-driven products and services or be successful in marketing these products and services to our customers.

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Costs and levels of deposits are affected by competition that could increase our funding costs or liquidity risk.

We rely on bank deposits to be a low cost and stable source of funding. We compete with banks and other financial services companies for deposits. If our competitors raise the rates they pay on deposits, our funding costs may increase, either because we raise our rates to avoid losing deposits or because we lose deposits and must rely on more expensive sources of funding. Higher funding costs could reduce our net interest margin and net interest income and could have a material adverse effect on our business, financial condition and results of operations.

Acquisition Risks

We have engaged in and may continue to engage in expansion through acquisitions, and these acquisitions present a number of risks related both to the acquisition transactions and to the integration of the acquired businesses.

The acquisition of other financial services companies or assets present risks to the Company in addition to those presented by the nature of the business acquired. Our earnings, financial condition, and prospects after a merger or acquisition depend in part on our ability to successfully integrate the operations of the acquired company. We may be unable to integrate operations successfully or to achieve expected results or cost savings.

Acquiring other banks or businesses involves various risks commonly associated with acquisitions, including, among other things:

◦potential exposure to unknown or contingent liabilities of the target company;

◦exposure to potential asset quality issues of the target company;

◦difficulty and expense of integrating the operations and personnel of the target company;

◦potential disruption to our business;

◦potential diversion of our management’s time and attention;

◦the possible loss of key employees and clients of the target company;

◦difficulty in estimating the value of the target company;

◦payment of a premium over book and market values that may dilute our tangible book value and earnings per share in the short- and long-term;

◦inability to realize the expected revenue increases, cost savings, increases in geographic or product presence, and/or other projected benefits; and/or

◦potential changes in banking or tax laws or regulations that may affect the target company.

We periodically evaluate merger and acquisition opportunities and conduct due diligence activities related to possible transactions with other financial institutions and financial services companies. As a result, merger or acquisition discussions and, in some cases, negotiations may take place, and future mergers or acquisitions involving cash, debt or equity securities may occur at any time. In addition to the risks noted above, potential acquisitions may incur additional costs for diligence or break-up fees, even if the transaction is not consummated.

We may be unable to successfully integrate new business lines into our existing operations.

From time to time, we may implement other new lines of business or offer new products or services within existing lines of business. There can be substantial risks and uncertainties associated with these efforts, particularly in instances where the markets are not fully developed. Although we continue to expend substantial managerial, operating and financial resources as our business grows, we may be unable to successfully continue the integration of new business lines, and price and profitability targets may not prove feasible. External factors such as compliance with regulations, competitive alternatives and shifting market preferences, may also impact the successful implementation of a new line of business or a new product or service. Furthermore, any new line of business and new product or service could have a significant impact on the effectiveness of our system of internal controls. Failure to successfully manage these risks in the development and implementation of new lines of business or new products or services could have a material adverse effect on our business, financial condition and results of operations.

As we expand outside our current markets, we may encounter additional risks that may adversely affect us.

We are headquartered in Missouri, but have branch locations in the Kansas City, Phoenix, and San Diego metropolitan areas, as well as Northern New Mexico and Nevada. Over time, we may acquire or open locations in

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other parts of the United States as well. In the course of these expansion activities, we may encounter significant risks, including unfamiliarity with the characteristics and business dynamics of new markets, increased marketing and administrative expenses and operational difficulties arising from our efforts to attract business in new markets, manage operations in noncontiguous geographic markets, comply with local laws and regulations and effectively and consistently manage personnel and business outside of the State of Missouri. If we are unable to manage these risks, our operations may be materially and adversely affected.

Technology and Cybersecurity Risks

A failure in or breach, or the inability to recognize a potential breach of our operational or security systems, or those of our third party service providers, including as a result of cyber-attacks, could disrupt our business, result in unintentional disclosure or misuse of confidential or proprietary information, damage our reputation, increase our costs and adversely impact our earnings.

As a financial institution, our operations rely heavily on the secure processing, storage and transmission of confidential and other information on our computer systems and networks. Any failure, interruption or breach in security or operational integrity of these systems could result in failures or disruptions in our internet banking system, treasury management products, check and document imaging, remote deposit capture systems, general ledger, and other systems. The security and integrity of our systems could be threatened by a variety of interruptions or information security breaches, including those caused by computer hacking, cyber-attacks, electronic fraudulent activity or attempted theft of financial assets.  We cannot assure any such failures, interruption or security breaches will not occur, or if they do occur, that they will be adequately addressed. While we have certain protective policies and procedures in place, the nature and sophistication of the threats continue to evolve. We may be required to expend significant additional resources in the future to modify and enhance our protective measures. Additionally, we face the risk of operational disruption, failure, termination or capacity constraints of any of the third parties that facilitate our business activities, including exchanges, clearing agents, clearing houses or other financial intermediaries. Such parties could also be the source of an attack on, or breach of, our operational systems. Any failures, interruptions or security breaches in our information systems could damage our reputation, result in a loss of client business, result in a violation of privacy or other laws, or expose us to civil litigation, regulatory fines or losses not covered by insurance.

We rely on third-party vendors to provide key components of our business infrastructure.

We rely heavily on third-party service providers for much of our communications, information, operating and financial control systems technology, including relationship management, mobile banking, general ledger, investment, deposit, loan servicing and loan origination systems. While we have selected these third-party vendors carefully and perform ongoing monitoring, we do not control their actions. Any problems caused by these third parties, including as a result of inadequate or interrupted service, could adversely affect our ability to deliver products and services to our clients and otherwise conduct our business. Financial or operational difficulties of a third-party vendor could also hurt our operations if those difficulties interfere with the vendor’s ability to serve us, and replacing these third-party vendors could result in significant delay and expense. Accordingly, use of such third parties creates an unavoidable inherent risk to our business operations as well as reputational risk.

Risks Relating to Our Common Stock

The price of our common stock may be volatile or may decline.

The trading price of our common stock may fluctuate widely as a result of a number of factors, many of which are outside our control. In addition, the stock market is subject to fluctuations in the share prices and trading volumes that affect the market prices of the shares of many companies. These broad market fluctuations could make it more difficult for you to resell your common stock when you want and at prices you find attractive.

Our stock price can fluctuate significantly in response to a variety of factors including, among other things:

◦actual or anticipated quarterly fluctuations in our operating results and financial condition;

◦changes in revenue or earnings estimates or publication of research reports and recommendations by financial analysts;

◦failure to meet analysts’ revenue or earnings estimates;

◦speculation in the press or investment community;

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◦strategic actions by us or our competitors, such as acquisitions or restructurings;

◦actions by institutional shareholders;

◦fluctuations in the stock prices and operating results of our competitors;

◦general market conditions and, in particular, developments related to market conditions for the financial services industry;

◦proposed or adopted regulatory changes or developments;

◦anticipated or pending investigations, proceedings or litigation that involve or affect us; and/or

◦domestic and international economic factors unrelated to our performance.

The stock market and, in particular, the market for financial institution stocks, has historically experienced significant volatility. As a result, the market price of our common stock may be volatile. In addition, the trading volume in our common stock may fluctuate more than usual and cause significant price variations to occur. The trading price of the shares of our common stock and the value of our other securities will depend on many factors, which may change from time to time, including, without limitation, our financial condition, performance, creditworthiness and prospects, future sales of our equity or equity related securities, and other factors identified in this annual report and other reports by the Company. In some cases, the markets have produced downward pressure on stock prices and credit availability for certain issuers without regard to those issuers’ underlying financial strength or operating results. A significant decline in our stock price could result in substantial losses for individual shareholders and could lead to costly and disruptive securities litigation.

The trading volume in our common stock is less than that of other larger financial institutions.

Although our common stock is listed for trading on the Nasdaq Global Select Market, its trading volume may be less than that of other, larger financial services companies. A public trading market having the desired characteristics of depth, liquidity and orderliness depends on the presence in the marketplace of willing buyers and sellers of our common stock at any given time, a factor over which we have no control. During any period of lower trading volume of our common stock, significant sales of shares of our common stock or the expectation of these sales could cause our common stock price to fall.

An investment in our common stock is not insured and you could lose the value of your entire investment.

An investment in our common stock is not a savings account, deposit or other obligation of our bank subsidiary, any non-bank subsidiary or any other bank, and such investment is not insured or guaranteed by the FDIC or any other governmental agency. As a result, if you acquire our common stock, you may lose some or all of your investment.

Our ability to pay dividends is limited by various statutes and regulations and depends primarily on the Bank’s ability to distribute funds to us and is also limited by various statutes and regulations. The Company depends on payments from the Bank, including dividends, management fees and payments under tax sharing agreements, for substantially all of the Company’s liquidity requirements. Federal and state regulations limit the amount of dividends and the amount of payments that the Bank may make to the Company under tax sharing agreements. In certain circumstances, the Missouri Division of Finance, FDIC, or Federal Reserve Board could restrict or prohibit the Bank from distributing dividends or making other payments to us. In the event that the Bank was restricted from paying dividends to the Company or making payments under the tax sharing agreement, the Company may not be able to service its debt, pay its other obligations or pay dividends on its common stock. If we are unable or determine not to pay dividends on our outstanding equity securities, the market price of such securities could be materially adversely affected.

There can be no assurance of any future dividends on our common stock.

Holders of our common stock are entitled to receive dividends only when, as and if declared by the Board of Directors. Although we have historically paid cash dividends on our common stock, we are not required to do so.

Our outstanding debt securities, related to our trust preferred securities, restrict our ability to pay dividends on our capital stock.

We have outstanding subordinated debentures issued to statutory trust subsidiaries, which have issued and sold preferred securities in the Trusts to investors.

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If we are unable to make payments on any of our subordinated debentures for more than 20 consecutive quarters, we would be in default under the governing agreements for such securities and the amounts due under such agreements would be immediately due and payable. Additionally, if for any interest payment period we do not pay interest in respect of the subordinated debentures (which will be used to make distributions on the trust preferred securities), or if for any interest payment period we do not pay interest in respect of the subordinated debentures, or if any other event of default occurs, then we generally will be prohibited from declaring or paying any dividends or other distributions, or redeeming, purchasing or acquiring, any of our capital securities, including the common stock, during the next succeeding interest payment period applicable to any of the subordinated debentures, or next succeeding interest payment period, as the case may be.

Moreover, any other financing agreements that we enter into in the future may limit our ability to pay cash dividends on our capital stock, including the common stock. In the event that our existing or future financing agreements restrict our ability to pay dividends in cash on the common stock, we may be unable to pay dividends in cash on the common stock unless we can refinance amounts outstanding under those agreements. In addition, if we are unable or determine not to pay interest on our subordinated debentures, the market price of our common stock could be materially or adversely affected.

Anti-takeover provisions could negatively impact our shareholders.

Provisions of Delaware law and of our certificate of incorporation, as amended, and bylaws, as well as various provisions of federal and Missouri state law applicable to bank and bank holding companies, could make it more difficult for a third party to acquire control of us or have the effect of discouraging a third party from attempting to acquire control of us. We are subject to Section 203 of the Delaware General Corporation Law, which would make it more difficult for another party to acquire us without the approval of our Board of Directors. Additionally, our certificate of incorporation, as amended, authorizes our Board of Directors to issue preferred stock which could be issued as a defensive measure in response to a takeover proposal. In the event of a proposed merger, tender offer or other attempt to gain control of the Company, our Board of Directors would have the ability to readily issue available shares of preferred stock as a method of discouraging, delaying or preventing a change in control of the Company. Such issuance could occur regardless of whether our shareholders favorably view the merger, tender offer or other attempt to gain control of the Company. These and other provisions could make it more difficult for a third party to acquire us even if an acquisition might be in the best interests of our shareholders. Although we have no present intention to issue any shares of our authorized preferred stock, there can be no assurance that the Company will not do so in the future.

General Risk Factors

Climate-related Risk

Political and social attention to the issue of climate change has increased. Federal and state legislatures and regulatory agencies continue to propose and advance numerous legislative and regulatory initiatives seeking to mitigate the effects of climate change. As a financial institution, it is unclear how future government regulations and shifts in business trends resulting from increased concern about climate change will affect our operations; however, natural or man-made disasters and severe weather events may cause operational disruptions and damage to both our properties and properties securing our loans. Losses resulting from these disasters and severe weather events may make it more difficult for borrowers to timely repay their loans. If these events occur, we may experience a decrease in the value of our loan portfolio and our revenue, and may incur additional operational expenses, each of which could have a material adverse effect on our financial condition and results of operations.

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ITEM 1B: UNRESOLVED STAFF COMMENTS

None.

ITEM 2: PROPERTIES

Our executive offices are located at 150 North Meramec Avenue, Clayton, Missouri, 63105. As of December 31, 2020, we had 19 banking locations, and three limited service facilities in the St. Louis metropolitan area, seven banking locations in the Kansas City metropolitan area, two banking locations in the Phoenix metropolitan area, six banking locations in New Mexico, four banking locations in the San Diego metropolitan area, and one banking location in the Las Vegas metropolitan area. Additionally, the Company has a limited network of SBA loan production offices and deposit production offices in various states. We own or lease our facilities and believe all of our properties are in good condition to meet our business needs.

ITEM 3: LEGAL PROCEEDINGS

The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Management believes that there are no such legal proceedings pending or threatened against the Company or its subsidiaries in the ordinary course of business, directly, indirectly, or in the aggregate that, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.

For more information on our legal proceedings, see “Item 8. Note 14 – Litigation and Other Contingencies” in this report.

ITEM 4: MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5: MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market for Our Common Stock

The Company’s common stock trades on the Nasdaq Global Select Market under the symbol “EFSC.” As of February 17, 2021, the Company had 1,480 registered shareholders of common stock. The number of holders of record does not represent the actual number of beneficial owners of our common stock because securities dealers and others frequently hold shares in “street name” for the benefit of individual owners who have the right to vote shares.

Dividends

The holders of shares of our common stock are entitled to receive dividends when declared by our Board of Directors out of funds legally available for the purpose of paying dividends. Our Board of Directors approved the Company’s quarterly dividend of $0.18 per common share for the first quarter of 2021, payable on March 31, 2021 to shareholders of record as of March 15, 2021. We anticipate continuing a regular quarterly cash dividend. However, we have no obligation to pay dividends and we may change our dividend policy at any time without notice to our shareholders.

Our ability to pay dividends is substantially dependent upon the ability of our subsidiaries to pay cash dividends to us. Information on regulatory restrictions on our ability to pay dividends is set forth in “Part I, Item 1. Business - Supervision and Regulation - Financial Holding Company - Dividend Restrictions.” The amount of dividends, if any, that may be declared by the Company also depends on many other factors, including future earnings, bank

26

regulatory capital requirements and business conditions as they affect the Company and its subsidiaries. As a result, no assurance can be given that dividends will be paid in the future with respect to our common stock.

Securities Authorized for Issuance Under Equity Compensation Plans

For more information on our equity compensation plans, see “Item 8. Note 16 – Stockholders’ Equity and Compensation Plans” and “Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” in this report, which are incorporated herein by reference.

Recent Sales of Unregistered Securities and Use of Proceeds

None.

Issuer Purchases of Equity Securities

None.

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Stock Performance Graph

The following graph compares the cumulative total shareholder return on the Company’s common stock from December 31, 2015 through December 31, 2020. The graph compares the Company’s common stock with the Nasdaq Composite Index (U.S. companies), and the SNL Bank $5B-$10B Index. The graph assumes an investment of $100.00 in the Company’s common stock and each index at the respective closing price on December 31, 2015 and reinvestment of all quarterly dividends. The investment is measured as of each subsequent fiscal year end. There is no assurance that the Company’s common stock performance will continue in the future with the same or similar results as shown in the graph.

	Period Ending December 31,
Index	2015		2016		2017		2018		2019		2020
Enterprise Financial Services Corp	$	100.00	$	153.67	$	163.06	$	137.22	$	178.36	$	132.29
Nasdaq Composite Index	$	100.00	$	108.87	$	141.13	$	137.12	$	187.44	$	271.64
SNL Bank $5B-$10B Index	$	100.00	$	143.27	$	142.73	$	129.17	$	160.06	$	145.37

*Source: S&P Global Market Intelligence. Used with permission. All rights reserved.

ITEM 6: SELECTED FINANCIAL DATA

Not applicable.

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ITEM 7: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Introduction

The objective of this section is to provide an overview of the results of operations and financial condition of the Company by focusing on changes in certain key measures from year to year. It should be read in conjunction with the Consolidated Financial Statements and related Notes contained in “Item 8. Financial Statements and Supplementary Data,” and other financial data presented elsewhere in this report, particularly the information regarding the Company’s business operations described in Item 1. A detailed discussion comparing 2019 and 2018 results is incorporated herein by reference to Item 7 of the Company’s 2019 Annual Report on Form 10-K filed on February 22, 2020.

Executive Summary

Our Company offers a broad range of business and personal banking services including wealth management services. Lending services include commercial and industrial, commercial real estate, real estate construction and development, residential real estate, and other loans. A wide variety of deposit products and a complete suite of treasury management and international trade services complement our lending capabilities. Tax-credit brokerage activities consist of the acquisition of Federal and State tax credits and the sale of these tax credits. The Company’s results of operations are also affected by prevailing economic conditions, competition, government policies and other actions of regulatory agencies.

The Company closed its acquisition of Seacoast and its wholly-owned subsidiary, Seacoast Commerce Bank, on November 12, 2020. Seacoast operated five full-service retail and commercial banking offices in California and Nevada as well as SBA loan production offices and deposit production offices in Arizona, California, Colorado, Illinois, Indiana, Massachusetts, Michigan, Nevada, Ohio, Oregon, Texas, Utah, and Washington. The Company closed its acquisition of Trinity and its wholly-owned subsidiary, LANB, on March 8, 2019. Trinity operated six full-service retail and commercial banking offices in Los Alamos, Santa Fe, and Albuquerque, New Mexico. The results of operations of Seacoast and Trinity are included in our consolidated results in periods after the respective acquisition dates and are excluded from preceding periods. See “Item 8. Note 2 – Acquisitions” for more information.

The following table summarizes the significant components of the Seacoast and Trinity transactions at the date of acquisition:

	Seacoast		Trinity
($ in thousands)	November 12, 2020		March 8, 2019
Loans, net	$	1,190,441	$	684,314
Securities			428,096
Total assets acquired	1,312,037		1,232,539
Deposits	1,081,006		1,081,187
Total liabilities assumed	1,193,595		1,116,377
Consideration paid:
Cash	$	1,630	$	37,275
Common stock	167,035		171,885
Total consideration paid	$	168,665	$	209,160

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Financial Performance Highlights

Below are highlights of our financial performance for the years ended December 31, 2020, 2019 and 2018.

($ in thousands, except per share data)	Year ended December 31,
	2020			2019			2018
EARNINGS
Total interest income	$	304,779		$	305,134		$	237,802
Total interest expense	34,778			66,417			45,897
Net interest income	270,001			238,717			191,905
Provision for credit losses	65,398			6,372			6,644
Net interest income after provision for loan losses	204,603			232,345			185,261
Total noninterest income	54,503			49,176			38,347
Total noninterest expense	167,159			165,485			119,031
Income before income tax expense	91,947			116,036			104,577
Income tax expense	17,563			23,297			15,360
Net income	$	74,384		$	92,739		$	89,217
Basic earnings per share	$	2.76		$	3.56		$	3.86
Diluted earnings per share	2.76			3.55			3.83
Return on average assets	0.90		%	1.35		%	1.64		%
Return on average common equity	8.24		%	11.66		%	15.46		%
Return on average tangible common equity1	11.23		%	16.08		%	19.83		%
Net interest margin (fully tax equivalent)	3.56		%	3.80		%	3.82		%
Efficiency ratio	51.51		%	57.48		%	51.70		%
Core efficiency ratio1	50.96		%	52.36		%	52.04		%
Dividend payout ratio	26.61		%	17.87		%	12.16		%
Book value per common share	$	34.57		$	32.67		$	26.47
Tangible book value per common share1	$	25.48		$	23.76		$	20.95
Average common equity to average assets	10.94		%	11.54		%	10.61		%
Tangible common equity to tangible assets1	8.40		%	8.89		%	8.66		%
	At or for the year ended December 31,
	2020			2019			2018
ASSET QUALITY
Net charge-offs	$	1,907		$	6,410		$	5,683
Nonperforming loans	38,507			26,425			16,745
Classified assets	123,808			85,897			70,126
Nonperforming loans to total loans	0.53		%	0.50		%	0.38		%
Nonperforming assets to total assets	0.45		%	0.45		%	0.30		%
Allowance for loan losses to total loans	1.89		%	0.81		%	1.00		%
Net charge-offs to average loans	0.03		%	0.13		%	0.26		%

1Non-GAAP measures. A reconciliation has been included in this MD&A section under the caption “Use of Non-GAAP Financial Measures.”

The Company noted the following trends during 2020:

•The Company reported net income of $74.4 million, or $2.76 per diluted share for 2020, compared to $92.7 million, or $3.55 per diluted share for 2019. An increase in operating revenue (net interest income and

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noninterest income) of $36.6 million in 2020 was offset by a $59.0 million increase in the provision for credit losses. The increase in the provision for credit losses was primarily due to the forward-looking CECL methodology and the worsening outlook for forecasted economic factors.

•Net interest income for 2020 totaled $270.0 million, an increase of $31.3 million, or 13%, compared to $238.7 million for 2019. PPP interest and fee income totaled $19.6 million in 2020. The Seacoast acquisition added $8.0 million and the Company benefited from a full year of Trinity operations in 2020 compared to a partial year in 2019.

•Net interest margin decreased 24 basis points to 3.56% during 2020, compared to 3.80% in 2019. The decrease was primarily due to a decline in interest rates during 2020 that reduced the earning asset yield to 4.02% from 4.85%, coupled with the shift in 2020 in earning assets to lower yielding PPP loans and short-term investments. The one-month and three-month LIBOR rates were 0.14% and 0.24%, respectively, at December 31, 2020, compared to 1.76% and 1.97%, respectively, at December 31, 2019. At December 31, 2020, the Company had $2.5 billion in loans indexed to LIBOR.

•Noninterest income increased $5.3 million, or 11%, to $54.5 million in 2020 compared to $49.2 million in 2019. This improvement was primarily due to a $2.3 million increase in mortgage revenue on higher volumes and a $2.5 million increase in income from community development investments.

•Noninterest expenses totaled $167.2 million for 2020, an increase of $1.7 million, or 1%, compared to 2019. The operations of Seacoast added $6.0 million of noninterest expense in 2020, in addition to $4.2 million of merger-related expenses. The Company also incurred a full year of Trinity operating expenses in 2020, compared to a partial year in 2019. These increases were offset by a reduction in the Trinity merger expenses of $18.0 million in 2019. The Company’s efficiency ratio was 51.5% in 2020, compared to 57.5% for the prior year. The decrease in 2020 was primarily due to the merger-related expenses. The Company’s core efficiency ratio1 was 51.0% in 2020, compared to 52.4% for the prior year.

•The Company’s effective tax rate was 19.1% for the year ended December 31, 2020 compared to 20.1% in 2019. The lower rate in 2020 primarily resulted from increased benefits from tax exempt income.

1Non-GAAP measures. A reconciliation has been included in this MD&A section under the caption “Use of Non-GAAP Financial Measures.”

2020 Significant Transactions

During 2020, we announced the following significant transactions:

•On November 12, 2020, the Company announced the completion of its acquisition of Seacoast which was merged with and into the Company, and Seacoast Commerce Bank, Seacoast’s wholly-owned subsidiary, merged with and into the Bank. Aggregate consideration at closing was 5.0 million shares of Company common stock to Seacoast shareholders. The overall transaction had a value of $169 million.

•Assisted new and existing customers with navigating and accessing PPP loans through the approval of approximately 3,900 loans totaling $859 million.

•In May 2020, the Company issued $63.3 million of 5.75% fixed-to-floating rate subordinated notes due in 2030. The notes are callable beginning in 2025 and are included in tier 2 capital.

•The Company repurchased 456,251 of its common shares at a weighted-average share price of $33.64. At December 31, 2020, there were 95,907 shares remaining to be purchased under its existing share repurchase plan.

•Dividends paid in 2020 of $0.72 per share increased $0.10 per share, or 16%, compared to $0.62 per share in 2019.

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2019 Significant Transactions

During 2019, we announced the following significant transactions:

•On March 8, 2019, the Company announced the completion of its acquisition of Trinity which was merged with and into the Company, and LANB, Trinity’s wholly-owned subsidiary, merged with and into the Bank. Aggregate consideration at closing was 4.0 million shares of Company common stock and $37.3 million cash paid to Trinity shareholders. The overall transaction had a value of $209.2 million.

•The Company repurchased 396,737 of its common shares at a weighted-average share price of $39.13, pursuant to its publicly announced share repurchase program.

•Dividends paid in 2019 of $0.62 per share increased $0.15 per share, or 32%, compared to $0.47 per share in 2018.

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RESULTS OF OPERATIONS

Net Interest Income

Average Balance Sheet

The following table presents, for the periods indicated, certain information related to our average interest-earning assets and interest-bearing liabilities, as well as, the corresponding interest rates earned and paid, all on a tax equivalent basis.

	Year ended December 31,
	2020						2019						2018
($ in thousands)	Average Balance		Interest Income/Expense		Average Yield/ Rate		Average Balance		Interest Income/Expense		Average Yield/ Rate		Average Balance		Interest Income/Expense		Average Yield/ Rate
Assets
Interest-earning assets:
Taxable loans1	$	6,035,178	$	268,914	4.46	%	$	4,988,985	$	268,012	5.37	%	$	4,187,988	$	215,791	5.15	%
Tax-exempt loans2	36,318		1,759		4.84		29,583		1,852		6.26		34,371		1,889		5.50
Total loans	6,071,496		270,673		4.46		5,018,568		269,864		5.38		4,222,359		217,680		5.16
Taxable investments in debt and equity securities	1,016,100		25,524		2.51		1,064,913		30,085		2.83		712,227		18,375		2.58
Non-taxable investments in debt and equity securities2	350,501		11,151		3.18		131,161		4,668		3.56		40,038		1,426		3.56
Short-term investments	228,760		620		0.27		107,433		2,128		1.98		66,771		1,141		1.71
Total securities and short-term investments	1,595,361		37,295		2.34		1,303,507		36,881		2.83		819,036		20,942		2.56
Total interest-earning assets	7,666,857		307,968		4.02		6,322,075		306,745		4.85		5,041,395		238,622		4.73
Noninterest-earning assets	587,057						572,216						395,568
Total assets	$	8,253,914					$	6,894,291					$	5,436,963
Liabilities and Shareholders' Equity
Interest-bearing liabilities:
Interest-bearing transaction accounts	$	1,494,364	$	2,101	0.14	%	$	1,286,641	$	7,592	0.59	%	$	827,155	$	3,643	0.44	%
Money market accounts	1,977,826		7,754		0.39		1,608,349		26,267		1.63		1,488,238		19,361		1.30
Savings	589,832		279		0.05		489,310		841		0.17		206,286		597		0.29
Certificates of deposit	676,889		10,915		1.61		799,079		15,156		1.90		653,486		10,168		1.56
Total interest-bearing deposits	4,738,911		21,049		0.44		4,183,379		49,856		1.19		3,175,165		33,769		1.06
Subordinated debentures and notes	179,534		9,885		5.51		136,950		7,507		5.48		118,129		5,798		4.91
FHLB advances	241,635		2,673		1.11		287,474		6,668		2.32		271,493		5,556		2.05
Securities sold under agreements to repurchase	206,338		542		0.26		169,179		1,246		0.74		170,963		755		0.44
Other borrowings	32,147		629		1.96		32,392		1,140		3.52		773		19		2.46
Total interest-bearing liabilities	5,398,565		34,778		0.64		4,809,374		66,417		1.38		3,736,523		45,897		1.23
Noninterest bearing liabilities:
Demand deposits	1,854,982						1,228,832						1,086,863
Other liabilities	97,492						60,608						36,617
Total liabilities	7,351,039						6,098,814						4,860,003
Shareholders' equity	902,875						795,477						576,960
Total liabilities & shareholders' equity	$	8,253,914					$	6,894,291					$	5,436,963
Net interest income			$	273,190					$	240,328					$	192,725
Net interest spread					3.38	%					3.47	%					3.50	%
Net interest margin (tax equivalent)					3.56						3.80						3.82

1Average balances include non-accrual loans. Interest income includes net loan fees of $18.4 million, $4.5 million, and $4.0 million for the years ended December 31, 2020, 2019, and 2018 respectively. The increase in loan fees in 2020 is due to PPP fees of $13.8 million.

2Non-taxable income is presented on a fully tax-equivalent basis using a 24.7% tax rate. The tax-equivalent adjustments were $3.2 million for the year ended December 31, 2020, $1.6 million for the year ended December 31, 2019, and $0.8 million for the year ended December 31, 2018.

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Rate/Volume

The following table sets forth, on a tax-equivalent basis for the periods indicated, a summary of the changes in interest income and interest expense resulting from changes in yield/rates and volume.

	2020 compared to 2019						2019 compared to 2018
	Increase (decrease) due to						Increase (decrease) due to
($ in thousands)	Volume1		Rate2		Net		Volume1		Rate2		Net
Interest earned on:
Taxable loans	$	50,916	$	(50,014)	$	902	$	38,793	$	13,428	$	52,221
Tax-exempt loans3	374		(467)		(93)		(282)		245		(37)
Taxable investments in debt and equity securities	(1,334)		(3,227)		(4,561)		9,825		1,885		11,710
Non-taxable investments in debt and equity securities3	7,027		(544)		6,483		3,243		(1)		3,242
Short-term investments	1,228		(2,736)		(1,508)		782		205		987
Total interest-earning assets	58,211		(56,988)		1,223		52,361		15,762		68,123
Interest paid on:
Interest-bearing transaction accounts	$	1,063	$	(6,554)	$	(5,491)	$	2,450	$	1,499	$	3,949
Money market accounts	4,970		(23,483)		(18,513)		1,659		5,247		6,906
Savings	145		(707)		(562)		562		(318)		244
Certificates of deposit	(2,142)		(2,099)		(4,241)		2,515		2,473		4,988
Subordinated debentures and notes	2,345		33		2,378		986		723		1,709
FHLB advances	(933)		(3,062)		(3,995)		340		772		1,112
Securities sold under agreements to repurchase	229		(933)		(704)		(8)		499		491
Other borrowed funds	(9)		(502)		(511)		1,110		11		1,121
Total interest-bearing liabilities	5,668		(37,307)		(31,639)		9,614		10,906		20,520
Net interest income	$	52,543	$	(19,681)	$	32,862	$	42,747	$	4,856	$	47,603
1Change in volume multiplied by yield/rate of prior period.
2Change in yield/rate multiplied by volume of prior period.
3Nontaxable income is presented on a fully tax equivalent basis using a 24.7% tax rate.
NOTE: The change in interest due to both rate and volume has been allocated to rate and volume changes in proportion to the relationship of the absolute dollar amounts of the change in each.

Net interest income (on a tax equivalent basis) was $273.2 million for 2020, compared to $240.3 million for 2019, an increase of $32.9 million, or 14%. Total interest income increased $1.2 million and total interest expense decreased $31.6 million. The increase in net interest income in 2020 was primarily due to higher loan volumes, which benefited from PPP and the Seacoast acquisition, and a decline in the interest rate on interest-bearing liabilities. A decline in the yield on earning assets offset the benefit provided by higher loan volumes and a lower cost of funds.

The tax-equivalent net interest margin was 3.56% for 2020, compared to 3.80% for 2019. The primary driver of the decline in net interest margin from 2019 to 2020 was a decline in short-term rates. The federal funds target rate declined 150 basis points in 2020 and one-month LIBOR declined 162 basis points. The decline in short-term rates reduced the yield on the Company’s variable-rate loan portfolio, which represents approximately 60% of total loans. In addition, a shift in the composition of the loan portfolio to lower yielding PPP loans reduced the net interest margin. The yield on PPP loans was 3.47% on an average balance of $563.6 million in 2020. Excluding PPP, the yield on the loan portfolio was 4.56%. In response to the decline in interest rates, the Company proactively reduced the cost of certain managed money market and interest-bearing transaction accounts.

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Average interest-earning assets increased $1.3 billion, or 21%, to $7.7 billion for the year ended December 31, 2020. The increase was due to growth in average total loans of $1.1 billion, or 21%, primarily due to PPP loans. Average securities and short-term investments increased $291.9 million, or 22%. Securities represented 18% of earnings assets in 2020 and 19% in 2019. Short-term securities increased from 2% to 3% of earning assets, primarily due to higher liquidity from deposit growth. Due to volume growth in the balance sheet, interest income on earning assets increased $58.2 million. Interest income on interest-earnings assets decreased $57.0 million primarily due the decline in interest rates in 2020 compared to 2019.

Average interest-bearing liabilities increased $589.2 million, or 12% for the year ended December 31, 2020, . The increase in average interest-bearing liabilities resulted from $555.5 million of growth in interest-bearing deposits primarily due to customer liquidity provided by PPP loans. While average interest-bearing liabilities increased, interest expense declined $31.6 million due to a 75 basis point decline in the cost of deposits. The Company issued $63.3 million of subordinated debentures in May 2020 at 5.75% and reduced its use of FHLB advances. The total cost of interest-bearing liabilities declined 74 basis points, from 1.38% in 2019 to 0.64% in 2020. Volume growth in deposits and other borrowings used to fund asset growth increased interest expense in 2020 by $5.7 million. Interest expense on interest-bearing liabilities decreased $37.3 million for the year ended December 31, 2020 due to lower rates.

Noninterest Income

The following table presents a comparative summary of the major components of noninterest income for each of the years in the three-year period ended December 31, 2020:

	Year ended December 31,						Change from
($ in thousands)	2020		2019		2018		2020 vs. 2019		2019 vs. 2018
Service charges on deposit accounts	$	11,717	$	12,801	$	11,749	$	(1,084)	$	1,052
Wealth management revenue	9,732		9,932		8,241		(200)		1,691
Card services revenue	9,481		9,154		6,686		327		2,468
Tax credit income	6,611		5,393		2,820		1,218		2,573
Miscellaneous income	16,962		11,896		8,851		5,066		3,045
Total noninterest income	$	54,503	$	49,176	$	38,347	$	5,327	$	10,829

Noninterest income increased $5.3 million, or 11%, in 2020 compared to 2019. This improvement was primarily due to higher income from tax credit income and other miscellaneous income, primarily mortgage revenue, community development investment fees, swap fees, and BOLI income. Due to the slowdown in economic activity in 2020 caused by the pandemic, volumes on card and deposit services were down. Conversely, mortgage revenue was strong as customers took advantage of low, long-term mortgage rates. Similarly, tax credit income increased in 2020 as activity levels remained strong.

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Noninterest Expense

The following table presents a comparative summary of the components of noninterest expense:

	Year ended December 31,									Change from
($ in thousands)	2020			2019			2018			2020 vs. 2019			2019 vs. 2018
Employee compensation and benefits	$	92,288		$	81,295		$	66,039		$	10,993		$	15,256
Occupancy	13,457			12,465			9,550			992			2,915
Data processing	9,050			8,242			6,321			808			1,921
Professional fees	3,940			3,683			3,134			257			549
Merger related expenses	4,174			17,969			1,271			(13,795)			16,698
Other expenses	44,250			41,831			32,716			2,419			9,115
Total noninterest expense	$	167,159		$	165,485		$	119,031		$	1,674		$	46,454
Efficiency ratio	51.51		%	57.48		%	51.70		%	(5.97)		%	5.78		%
Core efficiency ratio1	50.96		%	52.36		%	52.04		%	(1.40)		%	0.32		%
1 A non-GAAP measure. A reconciliation has been included in this MD&A section under the caption “Use of Non-GAAP Financial Measures.”

Noninterest expense increased $1.7 million, or 1%, in 2020 compared to 2019. While total noninterest expense did not materially change from 2019, there were offsetting changes within the expense categories. The Company recorded $6.0 million of operating expenses from the acquisition of Seacoast, including $3.0 million in employee compensation and benefits and $2.2 million in other expenses from SBA lending and customer marketing and support services. Fiscal 2020 was also the first full year of Trinity operations. Employee compensation increased $11.0 million in 2020 compared to 2019, due to the previously mentioned increases from Seacoast and Trinity, annual merit and cost of living increases of approximately 3% of base salaries, and higher mortgage commissions commensurate with the increase in revenue. Merger related expenses of $4.2 million on the Seacoast acquisition were $13.8 million lower than the $18.0 million recorded in 2019 on the Trinity acquisition. In 2020, the majority of the Company's employees shifted to a virtual work environment. The Company did not experience a significant change in its operating expense from this development.

The Company expects to continue to invest in revenue producing associates and other infrastructure that supports additional growth.

Income Taxes

The Company’s blended federal and state tax rate is approximately 24.9%. Permanent differences between pre-tax income and taxable income along with tax planning initiatives reduced the effective income tax rate in 2020 to 19.1% compared to 20.1% in 2019. In addition, pursuant to the CARES Act, the Company was able to carryback a net operating loss to a prior period with a higher tax rate. This generated a tax benefit in 2020 of approximately $0.5 million.

36

FINANCIAL CONDITION

Summary Balance Sheet

($ in thousands)	December 31,						% Increase (Decrease)
	2020		2019		2018		2020 vs. 2019		2019 vs. 2018
Total cash and cash equivalents	$	537,703	$	167,256	$	196,552	221.49	%	(14.90)	%
Securities	1,400,039		1,316,483		787,048		6.35	%	67.27	%
Total loans	7,224,935		5,314,337		4,350,001		35.95	%	22.17	%
Total assets	9,751,571		7,333,791		5,645,662		32.97	%	29.90	%
Deposits	7,985,389		5,771,023		4,587,985		38.37	%	25.79	%
Total liabilities	8,672,596		6,466,606		5,041,858		34.11	%	28.26	%
Total shareholders’ equity	1,078,975		867,185		603,804		24.42	%	43.62	%

Assets

Loans by Type

The Company has a diversified loan portfolio, with no particular concentration of credit in any one economic sector; however, a substantial portion of the portfolio, including the C&I category, is secured by $4.0 billion of real estate. The ability of the Company’s borrowers to honor their contractual obligations is partially dependent upon the local economy and its effect on the real estate market.

The following table sets forth the composition of the Company’s loan portfolio by type of loans at the dates indicated:

	December 31,
($ in thousands)	2020			2019			2018			2017			2016
Commercial and industrial	$	3,088,995		$	2,361,157		$	2,123,167		$	1,921,676		$	1,636,238
Commercial real estate - investor owned	1,589,419			1,299,884			867,667			812,162			552,969
Commercial real estate - owner occupied	1,498,408			697,437			614,167			565,803			362,011
Construction and land development	546,686			457,273			334,645			308,974			198,907
Residential real estate	319,179			366,261			305,026			352,093			252,552
Other	182,248			132,325			105,329			136,342			155,484
Total loans	$	7,224,935		$	5,314,337		$	4,350,001		$	4,097,050		$	3,158,161
	December 31,
	2020			2019			2018			2017			2016
Commercial and industrial	42.8		%	44.4		%	48.8		%	46.9		%	51.8		%
Commercial real estate - investor owned	22.0		%	24.5		%	19.9		%	19.8		%	17.4		%
Commercial real estate - owner occupied	20.7		%	13.1		%	14.1		%	13.8		%	11.6		%
Construction and land development	7.6		%	8.6		%	7.7		%	7.5		%	6.3		%
Residential real estate	4.4		%	6.9		%	7.0		%	8.6		%	8.0		%
Other	2.5		%	2.5		%	2.5		%	3.4		%	4.9		%
Total loans	100.0		%	100.0		%	100.0		%	100.0		%	100.0		%

C&I loans are made based on the borrower’s ability to generate cash flows for repayment from income sources, general credit strength, experience, and character, even though such loans may also be secured by real estate or other assets. The credit risk related to commercial loans is largely influenced by general economic conditions and the resulting impact on a borrower’s operations.

The Company continues to focus on originating high-quality C&I relationships as they typically have variable interest rates and allow for cross selling opportunities involving other banking products. C&I loan growth also

37

supports our efforts to maintain the Company’s asset sensitive interest rate risk position. Additionally, our specialized products, especially sponsor finance, life insurance premium financing, and tax credit financing/lending, consist of primarily C&I loans, and have contributed significantly to the Company’s C&I loan growth. These loans are sourced through relationships developed with wealth and estate planning firms and private equity funds and are not bound geographically by our markets. As a result, these specialized loan products offer opportunities to expand and diversify our overall geographic concentration by entering into new markets. For the period ending December 31, 2020, C&I loans increased $727.8 million, or 31%, from 2019 primarily due to PPP loans.

Real estate loans place an emphasis on the estimated cash flows from the operation of the property and/or the underlying collateral value.

•Our commercial real estate loans, including investor-owned and owner-occupied categories, primarily represent multifamily and other commercial property loans on which the primary source of repayment is income from the property. These loans are principally underwritten based on the cash flow coverage of the property, the Company’s loan to value guidelines, and generally require either the limited or full guaranty of principal sponsors of the credit. Commercial real estate loans also represent owner-occupied C&I loans for which the primary source of repayment is dependent on sources other than the underlying collateral. For the period ending December 31, 2020, commercial real estate loans increased $1.1 billion, or 55%, from 2019 primarily due to the acquisition of Seacoast.

•Construction and land development loans relating primarily to residential and commercial properties, represent financing secured by real estate under development for eventual sale or undeveloped ground. At December 31, 2020, $164.4 million of these loans include the use of interest reserves and follow standard underwriting guidelines. Construction projects are monitored by the loan officer and a centralized independent loan disbursement function is employed.

•Residential real estate loans include residential mortgages, which are loans that, due to size or other attributes, do not qualify for conventional home mortgages available-for-sale in the secondary market, second mortgages and home equity lines. Residential mortgage loans are usually limited to a maximum of 80% of collateral value at origination.

Other loans represent loans to individuals, loans to state and political subdivisions, loans to nondepository financial institutions, and loans to purchase or are fully secured by investment securities. Credit risk is managed by thoroughly reviewing the creditworthiness of the borrowers prior to origination and thereafter.

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The following table presents a breakdown of loans by NAICS code at December 31, 2020 and 2019:

	December 31, 2020				December 31, 2019
($ in thousands)	Outstanding Balance		%		Outstanding Balance		%
Accomodation and Food Services	$	577,026	8	%	$	290,357	6	%
Administrative and Support and Waste Management and Remediation Services	167,023		2	%	96,939		2	%
Agriculture, Forestry, Fishing and Hunting1	207,335		3	%	143,604		3	%
Arts, Entertainment, and Recreation	110,422		2	%	65,243		1	%
Construction	451,050		6	%	237,052		5	%
Educational Services	53,708		1	%	45,020		1	%
Finance and Insurance	1,057,888		15	%	863,908		16	%
Health Care and Social Assistance	320,556		4	%	207,257		4	%
Information	53,696		1	%	34,764		1	%
Management of Companies and Enterprises	54,563		1	%	47,499		1	%
Manufacturing	590,652		8	%	412,719		8	%
Mining, Quarrying, and Oil and Gas Extraction	3,375		—	%	10,187		—	%
Other Services (except Public Administration)	509,006		7	%	389,972		7	%
Professional, Scientific, and Technical Services	304,701		4	%	151,595		3	%
Public Administration	13,811		—	%	14,932		—	%
Real Estate and Rental and Leasing	1,722,630		24	%	1,534,109		29	%
Retail Trade	398,251		6	%	233,587		4	%
Transportation and Warehousing	151,273		2	%	110,142		2	%
Utilities	19,321		—	%	13,398		—	%
Wholesale Trade	360,630		5	%	341,025		6	%
Other	98,018		1	%	71,028		1	%
Total Loans	$	7,224,935	100	%	$	5,314,337	100	%
1Includes $109.0 million in animal production and $92.7 million in crop production at December 31, 2020.

The following table presents a breakdown of commercial & industrial loans by size at December 31, 2020.

($ in thousands)	Number of Loans	Outstanding Balance		Average Balance
<$2 million	5,659	$	1,020,870	$	180
$2-5 million	277	858,287		3,099
$5-10 million	85	597,944		7,035
>$10 million	41	611,894		14,924
Total	6,062	$	3,088,995	$	510

The following table presents a breakdown of commercial real estate loans by size at December 31, 2020.

($ in thousands)	Number of Loans	Outstanding Balance		Average Balance
<$2 million	2,775	$	1,409,207	$	508
$2-5 million	289	903,998		3,128
$5-10 million	70	454,430		6,492
>$10 million	23	320,192		13,921
Total	3,157	$	3,087,827	$	978

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The following table presents a breakdown of construction loans by size at December 31, 2020.

($ in thousands)	Number of Loans	Outstanding Balance		Average Balance
<$2 million	572	$	163,327	$	286
$2-5 million	39	125,446		3,217
$5-10 million	18	126,585		7,033
>$10 million	9	131,328		14,592
Total	638	$	546,686	$	857

The following table presents a breakdown of residential loans by size at December 31, 2020.

($ in thousands)	Number of Loans	Outstanding Balance		Average Balance
<$2 million	2,764	$	295,259	$	107
$2-5 million	6	17,919		2,987
$5-10 million	1	6,001		6,001
Total	2,771	$	319,179	$	115

The following table presents a breakdown of other loans by size at December 31, 2020.

($ in thousands)	Number of Loans	Outstanding Balance		Average Balance
<$2 million	2,008	$	86,475	$	43
$2-5 million	15	41,394		2,760
$5-10 million	5	32,468		6,494
>$10 million	2	21,911		10,955
Total	2,030	$	182,248	$	90

The following table presents a breakdown of total loans by geographic region at December 31, 2020:

($ in thousands)	December 31, 2020
St. Louis	$	2,528,049
Kansas City	809,568
Arizona	419,738
New Mexico	617,496
California	264,080
Total	$	4,638,931

The table above excludes $698.6 million of PPP loans and $1.9 billion of specialty lending at December 31, 2020 and $1.0 billion of specialty lending at December 31, 2019.

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The following table illustrates selected specialty lending detail, at December 31, 2020 and 2019:

	December 31,								Seacoast Acquired Loans
($ in thousands)	2020		2019		Change		% Change		at 12/31/20
C&I	$	1,103,060	$	1,179,169	$	(76,109)	(6.5)	%	$	16,079
CRE investor owned	1,420,905		1,287,633		133,272		10.4	%	107,449
CRE owner occupied	825,846		713,563		112,283		15.7	%	98,134
SBA loans	895,930		19,249		876,681		4,554.4	%	874,578
SBA PPP loans	698,645		—		698,645		NM		85,729
Sponsor finance	396,487		428,896		(32,409)		(7.6)	%	—
Life insurance premium financing	534,092		472,822		61,270		13.0	%	—
Residential real estate	318,091		366,024		(47,933)		(13.1)	%	9,138
Construction and land development	474,399		428,681		45,718		10.7	%	32,535
Tax credits	382,602		294,210		88,392		30.0	%	—
Other	174,878		124,090		50,788		40.9	%	764
Total Loans	$	7,224,935	$	5,314,337	$	1,910,598	36.0	%	$	1,224,406

Certain prior period amounts have been reclassified among the categories to conform to the current period presentation.

The sponsor finance portfolio is primarily comprised of loans in the manufacturing, and wholesale trade sectors. It includes mid-market company mergers and acquisitions, targeted private equity firms, principally SBICs, and senior debt financing to portfolio companies.

The life insurance premium financing category specializes in financing whole life insurance premiums utilized in high net worth estate planning, through relationships with boutique estate planners throughout the United States.

The tax credit portfolio includes tax credit-related lending on affordable housing projects funded through the use of

federal and state low income housing tax credits. In addition, we provide leveraged and other loans on projects funded through the U.S. Department of the Treasury Community Development Financial Institution (“CDFI”) New Markets Tax Credit Program. This portfolio also includes tax credit brokerage through 10-year streams of Missouri state tax credits from affordable housing development funds. The tax credits are sold to clients and other individuals for tax planning purposes.

SBA 7(a) loans are primarily owner-occupied, commercial real estate loans secured by a 1st lien. These loans predominantly have a 75% portion guaranteed by the SBA.

SBA PPP loans originated in 2020 in response to the COVID-19 pandemic and are guaranteed by the SBA. The loans may be forgivable by the SBA if certain requirements are met.

Significant loan concentrations are considered to exist for a financial institution when there are amounts loaned to numerous borrowers engaged in similar activities that would cause them to be similarly impacted by economic or other conditions. At December 31, 2020, no significant concentrations exceeding 10% of total loans existed in the Company’s loan portfolio, except as described above.

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The following table presents the maturity distribution of loans at December 31, 2020 categorized by fixed or variable interest rates, net of unearned loan fees:

($ in thousands)	Due in One Year or Less		After One Through Five Years		After Five Years		Total		Percent of Total Loans
Fixed Rate Loans
Commercial and industrial	$	65,522	$	964,958	$	149,438	$	1,179,918	16	%
Real estate:
Commercial	233,582		925,518		300,966		1,460,066		20	%
Construction and land development	56,428		137,447		4,718		198,593		3	%
Residential	24,523		57,068		42,283		123,874		2	%
Other	947		13,520		101,409		115,876		2	%
Total	$	381,002	$	2,098,511	$	598,814	$	3,078,327	43	%
Variable Rate Loans
Commercial and industrial	$	1,827,245	$	76,348	$	5,484	$	1,909,077	26	%
Real estate:
Commercial	1,379,525		238,107		10,129		1,627,761		23	%
Construction and land development	338,900		8,961		232		348,093		5	%
Residential	147,226		43,122		4,957		195,305		3	%
Other	61,416		4,956		—		66,372		1	%
Total	$	3,754,312	$	371,494	$	20,802	$	4,146,608	58	%
Total Loans
Commercial and industrial	$	1,892,767	$	1,041,306	$	154,922	$	3,088,995	43	%
Real estate:
Commercial	1,613,107		1,163,625		311,095		3,087,827		43	%
Construction and land development	395,328		146,408		4,950		546,686		8	%
Residential	171,749		100,190		47,240		319,179		4	%
Other	62,363		18,476		101,409		182,248		2	%
Total	$	4,135,314	$	2,470,005	$	619,616	$	7,224,935	100	%

Fixed rate loans comprise 43% of the total loan portfolio at December 31, 2020, and 58% of the Company’s loans are variable-rate loans, most of which are based on the prime rate or LIBOR. Most loan originations have one-to three-year maturities. Management monitors this mix as part of its interest rate risk management. See “Interest Rate Risk” of this MD&A section.

Of the $1.6 billion of commercial real estate loans maturing in one year or less, $469 million, or 29%, represent loans secured by non-owner occupied commercial properties.

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Provision and Allowance for Loan Losses

The adoption of CECL on January 1, 2020 increased the ACL on loans by $28.4 million, or 65%, and the allowance for unfunded commitments by $2.4 million. These increases were offset in retained earnings and did not impact the consolidated statement of operations. The following table summarizes changes in the ACL on loans arising from CECL adoption; additions to the allowance from acquired PCD loans, additions charged to expense, as well as loan charge-offs and recoveries by loan category.

	December 31,
($ in thousands)	2020		2019		2018		2017		2016
Allowance, at beginning of period	$	43,288	$	43,476	$	42,577	$	43,409	$	43,616
CECL adoption	28,387		—		—		—		—
PCD loans immediately charged-off	(1,680)		—		—		—		—
Allowance, at beginning of period, adjusted for adoption of CECL	$	69,995	$	43,476	$	42,577	$	43,409	$	43,616
Initial allowance on acquired PCD loans	3,524		—		—		—		—
Provision for credit losses	63,379		6,372		6,644		10,130		3,605
Charge-offs:
Commercial and industrial	(5,381)		(6,882)		(6,894)		(9,872)		(2,303)
Real estate:
Commercial	(528)		(609)		(313)		(207)		(95)
Construction and land development	(31)		(54)		(56)		(254)		—
Residential	(408)		(667)		(546)		(973)		(25)
Other	(391)		(382)		(167)		(201)		(1,912)
Total charge-offs	(6,739)		(8,594)		(7,976)		(11,507)		(4,335)
Recoveries:
Commercial and industrial	1,848		338		1,133		545		674
Real estate:
Commercial	3,197		114		112		235		1,165
Construction and land development	384		776		459		101		934
Residential	967		661		508		390		123
Other	116		295		80		73		12
Total recoveries	6,512		2,184		2,292		1,344		2,908
Net charge-offs	(227)		(6,410)		(5,684)		(10,163)		(1,427)
Net charge-offs on PCI loans	—		(150)		(61)		(799)		(2,385)
Allowance, at end of period	$	136,671	$	43,288	$	43,476	$	42,577	$	43,409

The following table presents the components of the provision for credit losses:

	December 31,
(in thousands)	2020		2019
Provision for loan losses	$	54,822	$	6,372
Day 2 provision on Seacoast acquired loans	8,557		—
Provision for off-balance sheet commitments	2,877		—
Provision for held-to-maturity securities	147		—
Recovery of accrued interest	(1,005)		—
Provision for credit losses	$	65,398	$	6,372

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The following table is a summary of the allocation of the allowance for loan losses for the five-year period ended December 31, 2020:

	December 31,
	2020				2019				2018				2017				2016
($ in thousands)	Allowance		Percent		Allowance		Percent		Allowance		Percent		Allowance		Percent		Allowance		Percent
Commercial and industrial	$	58,812	42.8	%	$	27,455	44.4	%	$	29,286	48.8	%	$	26,706	46.9	%	$	27,615	51.8	%
Real estate:
Commercial	49,074		42.7	%	10,808		37.6	%	8,924		34.1	%	8,553		33.6	%	8,220		29.0	%
Construction and land development	21,413		7.6	%	2,611		8.6	%	2,344		7.7	%	2,251		7.5	%	2,127		6.3	%
Residential	4,585		4.4	%	1,703		6.9	%	2,191		7.0	%	4,217		8.6	%	4,500		8.0	%
Other	2,787		2.5	%	711		2.5	%	731		2.4	%	850		3.4	%	947		4.9	%
Total allowance	$	136,671	100.0	%	$	43,288	100.0	%	$	43,476	100.0	%	$	42,577	100.0	%	$	43,409	100.0	%

The provision for credit losses, which includes a provision for losses on unfunded commitments, is a charge to earnings to maintain the ACL at a level consistent with management’s assessment of expected losses in the loan portfolio at the balance sheet date. The Company also records reversals of interest on nonaccrual loans and interest recoveries directly through the provision of credit losses. CECL requires economic forecasts to be factored into determining estimated losses. As a result, CECL will typically require a higher level of provision at the start of an economic downturn. The increase in the provision for credit losses in 2020 was primarily due to a change in economic forecasts from the end of 2019, which significantly deteriorated in March 2020 due to the COVID-19 pandemic and the resulting slow-down of business activity. Two of the primary economic loss drivers used in estimating the ACL include the percentage change in GDP and unemployment. At December 31, 2020, the Company’s forecast of the percentage change in GDP included a range of (2.5)% to 11.9% and the percentage change in unemployment included a range of 5.6% to 9.8%. The Company utilizes a one-year reasonable and supportable forecast and a one-year reversion period

As part of the acquisition of Seacoast, we recognized an allowance of $3.5 million on the PCD portfolio. In addition, we recognized $8.6 million on the non-PCD portion of the portfolio.

To the extent the Company does not recognize charge-offs and economic forecasts improve in future periods, the Company could recognize a reversal of provision for credit losses. Conversely, if economic conditions and the Company’s forecast worsens, the Company could recognize elevated levels of provision for credit losses. The provision is also reflective of charge-offs in the period.

The allowance for loan losses was 1.89% of total loans at December 31, 2020, compared to 0.81%, and 1.00%, at December 31, 2019 and 2018, respectively. The increase in 2020 compared to 2019 was due to the adoption of CECL and higher provision expense due to the pandemic, partially offset by the acquisition of Seacoast and PPP loans which include $1.3 billion in government-guaranteed loans with no allowance.

See “Critical Accounting Policies” of this MD&A section for more information on the allowance for loan losses methodology.

Nonperforming assets

Prior to the adoption of CECL, PCI loans were accounted for in performing pools of loans and were not individually identified as nonaccrual or classified. Under the CECL accounting model, the Company did not elect to maintain PCI pools for certain loans which are now accounted for individually and are now included in nonperforming and classified loans. PCI loans are referred to as PCD under CECL.

See “Item 8. Note 1 – Summary of Significant Accounting Policies” for more policy information on impaired loans and other real estate.

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The following table presents the categories of nonperforming assets, excluding government guaranteed portions, as of the dates indicated:

	December 31,
($ in thousands)	2020			2019			2018			2017			2016
Non-accrual loans	$	34,818		$	26,096		$	16,520		$	14,968		$	12,585
Loans past due 90 days or more and still accruing interest	130			250			—			—			—
Restructured loans	3,559			79			225			719			2,320
Total nonperforming loans	38,507			26,425			16,745			15,687			14,905
Other real estate	5,330			6,344			469			498			980
Total nonperforming assets	$	43,837		$	32,769		$	17,214		$	16,185		$	15,885
Total assets	$	9,751,571		$	7,333,791		$	5,645,662		$	5,289,225		$	4,081,328
Total loans	7,224,935			5,314,337			4,350,001			4,097,050			3,158,161
Nonperforming loans to total loans	0.53		%	0.50		%	0.38		%	0.38		%	0.47		%
Nonperforming assets to total assets	0.45		%	0.45		%	0.30		%	0.31		%	0.39		%
Allowance for loan losses to nonperforming loans	355		%	164		%	260		%	271		%	291		%

Nonperforming loans 

Nonperforming loans based on loan type were as follows:

($ in thousands)	December 31, 2020				Number of loans	December 31, 2019				Number of loans
Commercial and industrial	$	21,770	57	%	21	$	22,578	85	%	14
Commercial real estate	12,519		32	%	27	2,516		10	%	7
Residential real estate	4,189		11	%	3	1,330		5	%	10
Other	29		—	%	33	1		—	%	1
Total	$	38,507	100	%	84	$	26,425	100	%	32

The following table summarizes the changes in nonperforming loans: 

	Year ended December 31,
($ in thousands)	2020		2019
Nonperforming loans, beginning of period	$	26,425	$	16,745
CECL adoption	8,462		—
PCD loans immediately charged off	(1,680)		—
Nonperforming loans, January 1	$	33,207	$	16,745
Additions to nonaccrual loans	25,849		32,214
Additions to restructured loans	3,750		—
Charge-offs	(6,739)		(8,173)
Principal reductions	(16,303)		(12,205)
Moved to other real estate	(798)		(1,732)
Moved to performing	(361)		(674)
Loans past due 90 days or more and still accruing interest	(98)		250
Nonperforming loans, end of period	$	38,507	$	26,425

Nonperforming loans at December 31, 2020 increased $12.1 million, or 46%, when compared to December 31, 2019. The increase in nonperforming loans during 2020 was primarily from a $9.1 million hotel loan. The Company has a specific reserve of $2.8 million for the potential collateral shortfall.

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The Company has implemented several loan programs to assist its customers impacted by the COVID-19 pandemic. These programs include consumer and business deferral programs and expanded small business lines of credit.

The following table presents loans modified as part of our COVID-19 deferral programs that remained in a deferral status:

($ in thousands)	December 31, 2020
Commercial real estate	$	26,122
Commercial and industrial	15,708
Construction real estate	20,892
Residential real estate	255
Other	—
Total loan modifications	$	62,977
Percentage of total loans	0.87		%

Loans in a deferral status at December 31, 2020 listed above include $30.3 million of loans receiving more than one deferral. The deferral modifications are primarily set to expire in the first quarter of 2021.

Potential problem loans

Potential problem loans are unimpaired loans with a risk rating of 8-Substandard still accruing interest. See “Item 8. Note 5 – Loans” for the definitions of risk ratings. Potential problem loans, which are not included in nonperforming loans, were $80 million, or 1.05%, of loans outstanding at December 31, 2020, compared to $56 million, or 1.20%, of loans outstanding at December 31, 2019. Potential problem loans at December 31, 2020 include the addition of $30.7 million of PCI loans previously accounted for in performing loan pools. For these loans, payment of principal and interest is current and the loans are performing; however, some doubts exist as to the borrower’s ability to continue to comply with repayment terms. Potential problem loans include loans to companies characterized by significant losses or where downward trends in financial performance have been identified, or are in an industry experiencing significant difficulty.

Other real estate

Other real estate at December 31, 2020 and December 31, 2019 was $5.3 million and $6.3 million, respectively.

At December 31, 2020, other real estate was comprised of four properties located in the St. Louis region and four properties in New Mexico consisting of a mix of commercial, land, and residential.

The following table summarizes the changes in other real estate:

	Year ended December 31,
($ in thousands)	2020		2019
Other real estate, beginning of period	$	6,344	$	469
Additions and expenses capitalized to prepare property for sale	756		8,148
Additions from acquisition	—		3,225
Writedowns in value	(1,104)		(812)
Sales	(666)		(4,686)
Other real estate, end of period	$	5,330	$	6,344

Writedowns in fair value were recorded in loan, legal, and other real estate expense.

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Investments

At December 31, 2020, our portfolio of investment securities was $1.4 billion, or 14%, of total assets. The portfolio is comprised of both available-for-sale and held-to-maturity securities.

Other investments primarily consist of the FHLB capital stock, common stock investments related to our trust preferred securities, community development funds, and other investments in private equity funds, primarily SBICs.

The table below sets forth the carrying value of investment securities held by the Company at the dates indicated:

	December 31,
	2020				2019				2018
($ in thousands)	Amount		%		Amount		%		Amount		%
Obligations of U.S. Government sponsored enterprises	$	15,161	1.0	%	$	10,046	0.7	%	$	98,498	12.1	%
Obligations of states and political subdivisions	592,556		40.9	%	224,728		16.6	%	39,316		4.8	%
Agency mortgage-backed securities	639,314		44.1	%	948,367		70.0	%	639,309		78.6	%
U.S. Treasury Bills	11,466		0.8	%	10,226		0.8	%	9,925		1.2	%
Corporate debt securities	141,991		9.8	%	123,116		9.1	%	—		—	%
Other investments: FHLB capital stock	10,774		0.8	%	15,673		1.2	%	9,158		1.1	%
Other investments	37,991		2.6	%	22,371		1.6	%	17,496		2.2	%
Total	$	1,449,253	100.0	%	$	1,354,527	100.0	%	$	813,702	100.0	%

The Company had no debt securities classified as trading at December 31, 2020, 2019, or 2018.

The following table summarizes expected maturity and tax-equivalent yield information on the investment portfolio at December 31, 2020:

	Within 1 year				1 to 5 years				5 to 10 years				Over 10 years				No Stated Maturity				Total
($ in thousands)	Amount		Yield		Amount		Yield		Amount		Yield		Amount		Yield		Amount		Yield		Amount		Yield
Obligations of U.S. Government-sponsored enterprises	$	10,164	2.12	%	$	—	—	%	$	4,997	0.75	%	$	—	—	%	$	—	—	%	$	15,161	1.67	%
Obligations of states and political subdivisions	1,077		6.02	%	18,107		2.58	%	13,969		3.35	%	559,403		2.89	%	—		—	%	592,556		2.90	%
Agency mortgage-backed securities	27,012		3.19	%	526,540		3.00	%	60,284		2.95	%	25,478		1.58	%	—		—	%	639,314		2.94	%
U.S. Treasury Bills	1,000		0.11	%	10,466		2.47	%	—		—	%	—		—	%	—		—	%	11,466		2.27	%
Corporate debt securities	—		—	%	8,239		3.23	%	133,752		3.37	%	—		—	%	—		—	%	141,991		3.36	%
FHLB capital stock	—		—	%	—		—	%	—		—	%	—		—	%	10,774		4.23	%	10,774		4.23	%
Other investments	—		—	%	—		—	%	—		—	%	—		—	%	37,991		0.56	%	37,991		0.56	%
Total	$	39,253	2.91	%	$	563,352	2.98	%	$	213,002	3.19	%	$	584,881	2.83	%	$	48,765	1.37	%	$	1,449,253	2.89	%

Yields on tax-exempt securities are computed on a taxable equivalent basis using a tax rate of 24.7%. Expected maturities will differ from contractual maturities, as borrowers may have the right to call or repay obligations with or without prepayment penalties.

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Deposits

The following table shows the breakdown of the Company’s deposits by type for the periods indicated:

	Years ended December 31,									% Increase (decrease)
($ in thousands)	2020			2019			2018			2020 vs. 2019		2019 vs. 2018
Noninterest-bearing deposit accounts	$	2,711,828		$	1,327,348		$	1,100,718		104.3	%	20.6	%
Interest-bearing transaction accounts	1,768,497			1,367,444			1,037,684			29.3	%	31.8	%
Money market accounts	2,327,066			1,713,615			1,565,729			35.8	%	9.4	%
Savings accounts	627,903			536,169			199,425			17.1	%	168.9	%
Total core deposits	7,435,294			4,944,576			3,903,556
Certificates of deposit:
Brokered	50,209			215,758			198,981			(76.7)	%	8.4	%
Other	499,886			610,689			485,448			(18.1)	%	25.8	%
Total deposits	$7,985,389			$5,771,023			$4,587,985			38.4	%	25.8	%
Core deposits / Total deposits	93		%	86		%	85		%
Noninterest-bearing deposits / Total deposits	34		%	23		%	24		%

Core deposits, defined as total deposits excluding certificates of deposits, were $7.4 billion at December 31, 2020, an increase of $2.5 billion, or 50%, from December 31, 2019. The increase in 2020 was primarily due to the Seacoast acquisition and PPP loan fundings. Certificates of deposit, the highest cost portion of the deposit portfolio, declined $0.3 million in 2020.

The following table sets forth the maturities of certificates of deposit of $100,000 or more as of December 31, 2020:

($ in thousands)	Total
Three months or less	$	84,724
Over three through six months	56,383
Over six through twelve months	118,337
Over twelve months	68,620
Total	$	328,064

Shareholders’ equity

Shareholders’ equity totaled $1.1 billion at December 31, 2020, an increase of $211.8 million, or 24%, from December 31, 2019.

Significant activity during the year ended December 31, 2020 included the following:

•increase from the issuance of approximately 5.0 million shares of common stock for the Seacoast acquisition reflecting approximately $167 million of consideration;

•increase from net income of $74.4 million;

•net increase in fair value of available-for-sale securities and cash flow hedges of $19.4 million;

•decrease from dividends paid on common stock of $19.8 million; and

•decrease from share repurchase of $15.3 million, pursuant to the Company’s publicly-announced stock repurchase program.

Liquidity and Capital Resources

Liquidity

The objective of liquidity management is to ensure we have the ability to generate sufficient cash or cash equivalents in a timely and cost-effective manner to meet our commitments as they become due. Typical demands on liquidity are changes in deposit levels, maturing time deposits which are not renewed, and fundings under credit

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commitments to customers. Funds are available from a number of sources, such as the core deposit base and loans and securities repayments and maturities.

Additionally, liquidity is provided from lines of credit with the FHLB, the Federal Reserve, and correspondent banks; the ability to acquire large and brokered deposits, sales of the securities portfolio, and the ability to sell loan participations to other banks. These alternatives are an important part of our liquidity plan and provide flexibility and efficient execution of the asset-liability management strategy.

The Company’s Asset-Liability Management Committee oversees our liquidity position, the parameters of which are approved by the Bank’s Board of Directors. Our liquidity position is monitored daily. Our liquidity management framework includes measurement of several key elements, such as the loan to deposit ratio, a liquidity ratio, and a dependency ratio. The Company’s liquidity framework also incorporates contingency planning to assess the nature and volatility of funding sources and to determine alternatives to these sources. While core deposits and loan and investment repayments are principal sources of liquidity, funding diversification is another key element of liquidity management and is achieved by strategically varying depositor types, terms, funding markets, and instruments.

Liquidity from asset categories is provided through cash and interest-bearing deposits with other banks, which totaled $537.7 million at December 31, 2020, compared to $167.3 million at December 31, 2019. The low interest rate environment, coupled with an uncertain outlook and government stimulus, such as the PPP, have increased liquidity for the banking industry, including the Company. Investment securities are another important tool to the Company’s liquidity objectives. Securities totaled $1.4 billion at December 31, 2020, and included $526 million pledged as collateral for deposits of public institutions, treasury, loan notes, and other requirements. The remaining $874 million could be pledged or sold to enhance liquidity, if necessary.

Liability liquidity funding sources are available to increase financial flexibility. In addition to amounts currently borrowed, at December 31, 2020, the Company could borrow an additional $739 million from the FHLB of Des Moines under blanket loan pledges and has an additional $921 million available from the Federal Reserve Bank under a pledged loan agreement. The Company also has unsecured federal funds lines with six correspondent banks totaling $90 million.

In the normal course of business, the Company enters into certain forms of off-balance sheet transactions, including unfunded loan commitments and letters of credit. These transactions are managed through the Company’s various risk management processes. Management considers both on-balance sheet and off-balance sheet transactions in its evaluation of the Company’s liquidity. The Company has $2 billion in unused commitments as of December 31, 2020. While this commitment level would exhaust the majority the Company’s current liquidity resources, the nature of these commitments is such that the likelihood of funding them in the aggregate at any one time is low.

At the holding company level, our primary funding sources are dividends and payments from the Bank and proceeds from the issuance of equity (i.e. stock option exercises, stock offerings) and debt instruments. The main use of this liquidity is to provide the funds necessary to pay dividends to shareholders, service debt, invest in subsidiaries as necessary, and satisfy other operating requirements. The holding company maintains a revolving line of credit for an aggregate amount up to $25 million, all of which is available at December 31, 2020. The line of credit has a one-year term and matures in February 2021 and is in the process for renewal. The proceeds can be used for general corporate purposes.

The Company has an effective automatic shelf registration statement on Form S-3 allowing for the issuance of various forms of equity and debt securities. The Company’s ability to offer securities pursuant to the registration statement depends on market conditions and the Company’s continuing eligibility to use the Form S-3 under rules of the SEC.

Strong capital ratios, credit quality and core earnings are essential to retaining cost-effective access to the wholesale funding markets. Deterioration in any of these factors could have a negative impact on the Company’s ability to

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access these funding sources and, as a result, these factors are monitored on an ongoing basis as part of the liquidity management process. The Bank is subject to regulations and, among other things, may be limited in its ability to pay dividends or transfer funds to the parent company. Accordingly, consolidated cash flows as presented in the consolidated statements of cash flows may not represent cash immediately available for the payment of cash dividends to the Company’s shareholders or for other cash needs.

Capital Resources

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and its bank affiliate must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The banking affiliate’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the following table) of total and tier 1 capital to risk-weighted assets, and of tier 1 capital to average assets. To be categorized as “well-capitalized”, banks must maintain minimum total risk-based (10%), tier 1 risk-based (8%), common equity tier 1 risk-based (6.5%), and tier 1 leverage ratios (5%). As of December 31, 2020, and December 31, 2019, the Company and the Bank met all capital adequacy requirements to which they are subject.

The Bank met the definition of “well-capitalized” at each of December 31, 2020, 2019, and 2018. Refer to “Item 8. Note 15 – Regulatory Matters” for a summary of our risk-based capital and leverage ratios.

The following table summarizes the Company’s various capital ratios at the dates indicated:

($ in thousands)	December 31,
	2020			2019			2018
Total capital to risk weighted assets	14.9		%	12.9		%	13.0		%
Tier 1 capital to risk weighted assets	12.1		%	11.4		%	11.1		%
Common equity tier 1 capital to risk weighted assets	10.9		%	9.9		%	9.8		%
Leverage ratio (Tier 1 capital to average assets)	10.0		%	10.1		%	10.3		%
Tangible common equity to tangible assets1	8.4		%	8.9		%	8.7		%
Total risk-based capital	$	1,094,601		$	804,273		$	650,859
Tier 1 capital	889,527			710,480			556,958
Common equity tier 1 capital	795,873			616,825			489,301
1 Not a required regulatory capital ratio

The following table summarizes the Bank’s various capital ratios at the dates indicated:

($ in thousands)	December 31,									Well-Capitalized
	2020			2019			2018			Minimum %
Total capital to risk weighted assets	13.7		%	12.4		%	12.3		%	10.0%
Tier 1 capital to risk weighted assets	12.5		%	11.7		%	11.4		%	8.0%
Tier 1 common equity to risk weighted assets	12.5		%	11.7		%	11.4		%	6.5%
Leverage ratio (Tier 1 capital to average assets)	10.3		%	10.3		%	10.5		%	5.0%
Total risk-based capital	$	1,004,839		$	769,254		$	611,197
Tier 1 capital	913,169			725,461			567,296
Common equity tier 1 capital	913,116			725,406			567,239

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The Company believes the tangible common equity and regulatory capital ratios are important measures of capital strength even though they are considered to be non-GAAP measures. The tables further within MD&A reconcile these ratios to U.S. GAAP. 

Risk Management

Market risk arises from exposure to changes in interest rates and other relevant market rate or price risk. The Company faces market risk in the form of interest rate risk through transactions other than trading activities. Market risk from these activities, in the form of interest rate risk, is measured and managed through a number of methods. The Company uses financial modeling techniques to measure interest rate risk. These techniques measure the sensitivity of future earnings due to changing interest rate environments. Guidelines established by the Bank’s Asset/Liability Management Committee and approved by the Bank’s Board of Directors are used to monitor exposure of earnings at risk. General interest rate movements are used to develop sensitivity as management believes it has no primary exposure to a specific point on the yield curve. These limits are based on the Company’s exposure to immediate and sustained parallel rate movements, either upward or downward. The Company does not have any direct market risk from commodity exposures.

Interest Rate Risk 

Our interest rate risk management practices are aimed at optimizing net interest income, while guarding against deterioration that could be caused by certain interest rate scenarios. Interest rate sensitivity varies with different types of interest-earning assets and interest-bearing liabilities. We attempt to maintain interest-earning assets, comprised primarily of both loans and investments, and interest-bearing liabilities, comprised primarily of deposits, maturing or repricing in similar time horizons in order to manage any impact from market interest rate changes according to our risk tolerance. The Company uses an earnings simulation model to measure earnings sensitivity to changing rates.

The Company determines the sensitivity of its short-term future earnings to a hypothetical plus or minus 100 to 300 basis point parallel rate shock through the use of simulation modeling. The simulation of earnings includes the modeling of the balance sheet as an ongoing entity. Future business assumptions involving administered rate products, prepayments for future rate-sensitive balances, and the reinvestment of maturing assets and liabilities are included. These items are then modeled to project net interest income based on a hypothetical change in interest rates. The resulting net interest income for the next 12-month period is compared to the net interest income amount calculated using flat rates. This difference represents the Company’s earnings sensitivity to a positive or negative 100 basis points parallel rate shock.

The following table summarizes the projected impact of interest rate shocks on net interest income at December 31, 2020:

Rate Shock1	Annual % change in net interest income
+ 300 bp	10.7%
+ 200 bp	6.2%
+ 100 bp	2.0%
1 Due to the current levels of interest rates, the downward shock scenarios are not shown.

In addition to the rate shocks shown in the table above, the Company models net interest income under various dynamic interest rate scenarios. In general, changes in interest rates are positively correlated with changes in net interest income.

The Company occasionally uses interest rate derivative instruments as an asset/liability management tool to hedge mismatches in interest rate exposure indicated by the net interest income simulation described above. They are used to modify the Company’s exposures to interest rate fluctuations and provide more stable spreads between loan yields and the rate on their funding sources. At December 31, 2020, the Company had $62.0 million in derivative

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contracts used to manage interest rate risk. Derivative financial instruments are also discussed in “Item 8. Note 7 – Derivative Financial Instruments.”

The United Kingdom’s Financial Conduct Authority (“FCA”) announced in 2017 that market participants should not rely on LIBOR after 2021. LIBOR is the most liquid and common interest rate index in the world and is commonly referenced in financial instruments. While the Ice Benchmark Administration Ltd., who administers LIBOR, has said that it intends to continue to produce LIBOR after 2021, there can be no guarantee that it will continue without the FCA compelling or persuading LIBOR panel banks to submit quotes. The Federal Reserve’s Alternative Reference Rates Committee (“ARRC”) has proposed that the Secured Overnight Funding Rate (“SOFR”) replace LIBOR. However, at this time, the Company has not identified a replacement index for LIBOR.

We have exposure to LIBOR in various financial contracts. Instruments that may be impacted include loans, securities, debt instruments and derivatives, among other financial contracts indexed to LIBOR and that mature after December 31, 2021. We have an internal working group composed of members from legal, credit, finance, operations, risk and audit to monitor developments, develop policies and procedures, assess the impact to the Company, consider relevant options and to determine an appropriate replacement index for affected contracts that expire after the expected discontinuation of LIBOR on December 31, 2021. We are actively working to amend and address impacted contracts to allow for a replacement index. However, amending certain contracts indexed to LIBOR may require consent from the counterparties which could be difficult and costly to obtain in certain limited circumstances. As of December 31, 2020, the Company’s financial contracts indexed to LIBOR included $2.5 billion in loans, $239.2 million in deposits and borrowings, and $992.2 million (notional) in derivatives.

In addition, LIBOR is used in the Company’s analysis of the fair value of tax credits and may be referenced in other financial contracts not included in the discussion above.

The Company has $4.1 billion in variable rate loans as of December 31, 2020. Of these loans, $1.7 billion, or 37.0%, have a floor. $2.5 billion in variable rate loans are indexed to LIBOR, $1.3 billion are indexed to the prime rate, and $302 million are indexed to other rates.

Contractual Obligations, Off-Balance Sheet Risk, and Contingent Liabilities

Through the normal course of operations, the Company has entered into certain contractual obligations and other commitments. Such obligations relate to funding of operations through deposits or debt issuances, as well as leases for premises and equipment. As a financial services provider, the Company routinely enters into commitments to extend credit. While contractual obligations represent future cash requirements of the Company, a significant portion of commitments to extend credit may expire without being drawn upon. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Company.

The recorded contractual obligations and other commitments, excluding any contractual interest,1 at December 31, 2020, were as follows:

			Payments due by Period
($ in thousands)	Total		Less Than 1 Year		Over 1 Year Less than 3 Years		Over 3 Years Less than 5 Years		Over 5 Years
Operating leases	$	15,397	$	4,353	$	5,610	$	3,168	$	2,266
Certificates of deposit	550,095		384,563		113,208		46,744		5,580
Subordinated debentures and notes	209,750		—		—		—		209,750
FHLB advances	50,000		—		—		50,000		—
Notes payable	30,000		7,143		11,428		11,429		—
(1) Interest charges on related contractual obligations were excluded from reported amounts as the potential cash outflows would have corresponding cash inflows from interest-earning assets.

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The contractual commitments of off-balance sheet financial instruments at December 31, 2020, were as follows:

`			Payments due by Period
($ in thousands)	Total		Less Than 1 Year		Over 1 Year Less than 3 Years		Over 3 Years Less than 5 Years		Over 5 Years
Commitments to extend credit	$	1,946,068	$	1,351,213	$	250,423	$	132,077	$	212,355
Letters of credit	50,971		46,181		4,665		125		—
State tax credits	24,473		12,886		11,587		—		—
Limited partnership commitments	23,400		4,556		18,844		—		—
See “Item 8. Note 18 – Commitments” for narrative disclosure regarding off-balance sheet arrangements.

As of December 31, 2020, we had liabilities associated with uncertain tax positions of $3.1 million. The table above does not include these liabilities due to the high degree of uncertainty regarding the future cash flows associated with these amounts.

The Company also enters into derivative contracts under which the Company either receives cash from or pays cash to counterparties depending on changes in interest rates. Derivative contracts are carried at fair value on the consolidated balance sheet with the fair value representing the net present value of expected future cash receipts or payments based on market interest rates as of the balance sheet date. The fair value of these contracts changes daily as market interest rates change.

CRITICAL ACCOUNTING POLICIES

The following accounting policies are considered most critical to the understanding of the Company’s financial condition and results of operations. These critical accounting policies require management’s most difficult, subjective and complex judgments about matters that are inherently uncertain. Because these estimates and judgments are based on current circumstances, they may change over time or prove to be inaccurate based on actual experience. In the event that different assumptions or conditions were to prevail, and depending upon the severity of such changes, the possibility of a materially different financial condition and/or results of operations could reasonably be expected. The impact and any associated risks related to our critical accounting policies on our business operations are discussed throughout “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” where such policies affect our reported and expected financial results. For a detailed discussion on the application of these and other accounting policies, see “Item 8. Note 1 – Summary of Significant Accounting Policies.”

The Company has prepared all of the consolidated financial information in this report in accordance with GAAP. The Company makes estimates and assumptions that affect the reported amount of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using loss experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Decreased real estate values, volatile credit markets, and persistent high unemployment have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment will be reflected in the financial statement in future periods. There can be no assurances that actual results will not differ from those estimates.

Acquisitions

Acquisitions and Business Combinations are accounted for using the acquisition method of accounting. The assets and liabilities of the acquired entities have been recorded at their estimated fair values at the date of acquisition.

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Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. 

The purchase price allocation process requires an estimation of the fair values of the assets acquired and the liabilities assumed. When a business combination agreement provides for an adjustment to the cost of the combination contingent on future events, the Company includes an estimate of the acquisition-date fair value as part of the cost of the combination. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. The results of operations of the acquired business are included in the Company’s consolidated financial statements from the respective date of acquisition. Merger-related costs are costs the Company incurs to effect a business combination. Merger-related expenses include costs directly related to merger or acquisition activity and include legal and professional fees, system consolidation and conversion costs, and compensation costs such as severance and retention incentives for employees impacted by acquisition activity. The Company accounts for merger-related costs as expenses in the periods in which the costs are incurred and the services are received.

Allowance for Credit Losses

On January 1, 2020, the Company adopted Accounting Standard Update 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This standard, referred to as CECL, requires an estimate of lifetime expected credit losses on certain financial assets measured at amortized cost.

The Company maintains separate allowances for funded loans, unfunded loans, and held-to-maturity securities, collectively the ACL. The ACL is a valuation account to adjust the cost basis to the amount expected to be collected, based on management’s estimate of experience, current conditions, and reasonable and supportable forecasts. For purposes of determining the allowance for funded and unfunded loans, the portfolios are segregated into pools that share similar risk characteristics that are then further segregated by credit grades. Loans that do not share similar risk characteristics are evaluated on an individual basis and are not included in the collective evaluation. The Company estimates the amount of the allowance based on historical loan loss experience, adjusted for current and forecasted economic conditions, including unemployment, changes in GDP, and commercial and residential real estate prices. The Company’s forecast of economic conditions uses internal and external information and considers a weighted average of a baseline, upside, and downside scenarios. Because economic conditions can change and are difficult to predict, the anticipated amount of estimated loan defaults and losses, and therefore the adequacy of the allowance, could change significantly and have a direct impact on the Company’s credit costs.

Goodwill and Other Intangible Assets

The Company completes a goodwill impairment test in the fourth quarter each year or whenever events or changes in circumstances indicate that the Company may not be able to recover the goodwill or intangible assets respective carrying amounts. The impairment test involves the use of various estimates and assumptions. Management believes the estimates and assumptions utilized are reasonable. However, the Company may incur impairment charges related to goodwill or intangible assets in the future due to changes in business prospects or other matters that could impact estimates and assumptions.

Intangible assets other than goodwill, such as core deposit intangibles, that are determined to have finite lives are amortized over their estimated remaining useful lives. These assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset.

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Impact of Inflation and Changing Prices

Our consolidated financial statements and related data presented in this Annual Report on Form 10-K have been prepared in accordance with U.S. GAAP, which requires the measurement of financial position and operating results in terms of historical dollar amounts (except with respect to securities classified as available-for-sale which are carried at market value) without considering the changes in the relative purchasing power of money over time due to inflation. Substantially all of our assets and liabilities are monetary in nature; as a result, interest rates have a greater impact on our performance than do the effects of general levels of inflation. Interest rates do not necessarily move in the same direction or to the same magnitude as the price of goods and services.

Effects of New Accounting Pronouncements

See “Item 8. Note 22 – New Authoritative Accounting Guidance” for information on recent accounting pronouncements and their impact, if any, on our consolidated financial statements.

Use of Non-GAAP Financial Measures

The Company’s accounting and reporting policies conform to U.S. GAAP and the prevailing practices in the banking industry. However, the Company provides other financial measures, such as core efficiency ratio, tangible common equity ratio, return on average tangible common equity, and tangible book value per common share, in this filing that are considered “non-GAAP financial measures.” Generally, a non-GAAP financial measure is a numerical measure of a company’s financial performance, financial position, or cash flows that exclude (or include) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP.

The Company considers its core efficiency ratio, tangible common equity ratio, return on average tangible common equity, and tangible book value per common share, collectively “core performance measures” presented in this Annual Report on Form 10-K, as relevant measures of financial performance, even though they are non-GAAP measures, as they provide supplemental information by which to evaluate the impact of certain non-comparable items, and the Company’s operating performance on an ongoing basis. Core performance measures exclude certain other income and expense items such as merger-related expenses, facilities charges, and the gain or loss on sale of investment securities, the Company believes to be not indicative of or useful to measure the Company’s operating performance on an ongoing basis. The attached tables contain a reconciliation of these core performance measures to the GAAP measures. The Company believes that the tangible common equity ratio provides useful information to investors about the Company’s capital strength even though it is considered to be a non-GAAP financial measure and is not part of the regulatory capital requirements to which the Company is subject.

The Company believes the tangible common equity ratio provides useful information to investors about the Company’s capital strength, even though it is considered to be a non-GAAP financial measure, and is not part of the regulatory capital requirements to which the Company is subject.

The Company believes these non-GAAP measures and ratios, when taken together with the corresponding GAAP measures and ratios, provide meaningful supplemental information regarding the Company’s performance and capital strength. The Company’s management uses, and believes investors benefit from referring to, these non-GAAP measures and ratios in assessing the Company’s operating results and related trends and when forecasting future periods. However, these non-GAAP measures and ratios should be considered in addition to, and not as a substitute for or preferable to, ratios prepared in accordance with GAAP. The Company has provided a reconciliation of, where applicable, the most comparable GAAP financial measures and ratios to the non-GAAP financial measures and ratios, or a reconciliation of the non-GAAP calculation of the financial measure for the periods indicated.

55

Reconciliations of Non-GAAP Financial Measures

Core Efficiency Ratio

	For the Years ended
($ in thousands)	December 31, 2020			December 31, 2019			December 31, 2018
Net interest income	$	270,001		$	238,717		$	191,905
Less: Incremental accretion income	4,083			4,783			3,701
Core net interest income	265,918			233,934			188,204
Total noninterest income	54,503			49,176			38,347
Less: Other income from non-core acquired assets	—			1,372			1,048
Less: Gain on sale of investment securities	421			243			9
Less: Other non-core income	265			266			675
Core noninterest income	53,817			47,295			36,615
Total core revenue	$	319,735		$	281,229		$	224,819
Total noninterest expense	$	167,159		$	165,485		$	119,031
Less: Merger related expenses	4,174			17,969			1,271
Less: Other expenses (credits) related to non-core acquired loans	57			257			(163)
Less: Facilities disposal charge	—			—			239
Less: Other non-core expenses	—			—			682
Core noninterest expense	$	162,928		$	147,259		$	117,002
Core efficiency ratio	50.96		%	52.36		%	52.04		%

Tangible Common Equity and Tangible Common Equity Ratio

	For the Years ended December 31,
($ in thousands)	2020			2019			2018
Total shareholders' equity	$	1,078,975		$	867,185		$	603,804
Less: Goodwill	260,567			210,344			117,345
Less: Intangible assets	23,084			26,076			8,553
Tangible common equity	$	795,324		$	630,765		$	477,906
Total assets	$	9,751,571		$	7,333,791		$	5,645,662
Less: Goodwill	260,567			210,344			117,345
Less: Intangible assets	23,084			26,076			8,553
Tangible assets	$	9,467,920		$	7,097,371		$	5,519,764
Tangible common equity to tangible assets	8.40		%	8.89		%	8.66		%

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Return on Average Tangible Common Equity

	For the Years ended December 31,
($ in thousands)	2020			2019			2018
Average shareholder’s equity	$	902,875		$	795,477		$	576,960
Less average goodwill	217,205			193,804			117,345
Less average intangible assets	23,551			24,957			9,763
Average tangible common equity	$	662,119		$	576,716		$	449,852
Net Income	$	74,384		$	92,739		$	89,217
Return on average tangible common equity	11.23		%	16.08		%	19.83		%

Tangible Book Value Per Common Share

	For the Years ended December 31,
($ in thousands)	2020		2019		2018
Tangible common equity (calculated above)	$	795,324	$	630,765	$	477,906
Period end shares outstanding	31,210		26,543		22,812
Tangible book value per common share	$	25.48	$	23.76	$	20.95

ITEM 7A: QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Please refer to “Risk Factors” included in Item 1A and “Risk Management” and “Interest Rate Risk” included in Management’s Discussion and Analysis under Item 7.

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ITEM 8: FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Enterprise Financial Services Corp and Subsidiaries

	Page Number
Report of Independent Registered Public Accounting Firm	59
Consolidated Balance Sheets at December 31, 2020 and 2019	64
Consolidated Statements of Operations for the years ended December 31, 2020, 2019, and 2018	65
Consolidated Statements of Comprehensive Income for the years ended December 31, 2020, 2019, and 2018	66
Consolidated Statements of Shareholders’ Equity for the years ended December 31, 2020, 2019, and 2018	67
Consolidated Statements of Cash Flows for the years ended December 31, 2020, 2019, and 2018	68
Notes to Consolidated Financial Statements	70

58

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and Board of Directors of Enterprise Financial Services Corp

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Enterprise Financial Services Corp and subsidiaries (the “Company”) as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive income, shareholders’ equity, and cash flows, for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 19, 2021, expressed an unqualified opinion on the Company’s internal control over financial reporting.

Change in Accounting Principle

As discussed in Note 1 to the financial statements, on January 1, 2020, the Company adopted ASU 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” applicable to financial assets measured at amortized cost including loan receivables and held to maturity debt securities.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the US federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

59

Allowance for Credit Losses — Refer to Note 1 to the financial statements

Critical Audit Matter Description

The Company utilizes a discounted cash flow (“DCF”) method to measure the Allowance for Credit Losses (“ACL”) on loans collectively evaluated that are sub-segmented by credit risk levels. The DCF method incorporates assumptions for probability of default, loss given default, prepayments and curtailments over the contractual term of the loans. In determining the probability of default, the Company utilized a regression analysis to determine certain economic factors that are relevant loss drivers in the portfolio segments based on historical or peer evaluations such as unemployment or gross domestic product. Additionally, the Company applies qualitative adjustments to address risks not directly captured in the quantitative reserve; including to address macroeconomic uncertainty by weighting the forecasted baseline, upside, and downside economic factors.

We identified the allowance for credit losses as a critical audit matter because of the complexity of the Company’s model and the significant assumptions used by management. Auditing the allowance for credit losses required a high degree of auditor judgment and an increased extent of effort, including the need to involve credit specialists when performing audit procedures to evaluate the reasonableness of management’s models and assumptions.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the Company’s ACL included the following, among others:

a.We tested the design and operating effectiveness of management’s controls covering the key data, assumptions and judgments impacting the allowance for credit losses.

b.We evaluated the appropriateness of the Company’s accounting policies, methodologies, and elections involved in determining the allowance.

c.We involved credit specialists to assist us in evaluating the Company’s development of the CECL model, including the selection of and calibration to economic factors.

d.We assessed the reasonableness of the Company’s qualitative methodology, tested key calculations utilized within the qualitative estimate and agreed underlying data within the calculation to source documents.

Acquisition of Seacoast Commerce Banc Holdings (“Seacoast”) —Refer to Note 2 to the financial statements

Critical Audit Matter Description

On November 12, 2020, the Company closed its acquisition of 100% of Seacoast and its wholly-owned subsidiary, Seacoast Commerce Bank. The value of the transaction consideration was approximately $169 million. The acquisition of Seacoast has been accounted for as a business combination using the acquisition method of accounting which requires assets acquired and liabilities assumed to be recognized at fair value as of the acquisition date. Goodwill of $50 million arising from the acquisition consists largely of the synergies and economies of scale expected from combining the operations of Seacoast into the Company.

Given that the fair value determination of net assets, specifically the credit assumptions related to the acquired loan balance, required management to make significant estimates and assumptions related to the associated credit risk, performing audit procedures to evaluate the reasonableness of these estimates and assumptions required a high degree of auditor judgment and an increased extent of effort, including the need to involve our fair value specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management’s determination of the credit risk associated with these loans included the following, among others:

60

a.We tested the design and operating effectiveness of controls over the valuation of the acquired loans, including management’s controls over the determination of credit risk.

b.With the assistance of our fair value specialists, we evaluated the reasonableness of the (1) the discounted cash flow valuation methodology and (2) credit risk assumption utilized in the calculations by:

i.Testing the source information underlying the determination of the credit risk assumptions and testing the mathematical accuracy of the calculation.

ii.Developing independent estimates and comparing those to the credit risk assumptions selected by management.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

February 19, 2021

We have served as the Company’s auditor since 2010.

61

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and Board of Directors of Enterprise Financial Services Corp

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Enterprise Financial Services Corp and subsidiaries (the “Company”) as of December 31, 2020, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2020, of the Company and our report dated February 19, 2021, expressed an unqualified opinion on those financial statements and included an explanatory paragraph regarding the Company’s adoption of accounting standard update (ASU) 2016-13 “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”.

As described in Management’s Assessment on Internal Control over Financial Reporting, management excluded from its assessment the internal control over financial reporting at Seacoast Commerce Banc Holdings (“SCBH”), which was acquired on November 12, 2020, and whose financial statements constitute 14% of total assets and 3% of net interest income of the consolidated financial statement amounts as of and for the year ended December 31, 2020. Accordingly, our audit did not include the internal control over financial reporting at SCBH.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Assessment on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

62

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

February 19, 2021

63

ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Consolidated Balance Sheets

As of December 31, 2020 and 2019

($ in thousands, except per share data)	December 31, 2020		December 31, 2019
Assets
Cash and due from banks	$	99,760	$	74,769
Federal funds sold	1,519		3,060
Interest-earning deposits (including $36,525 and $15,285 pledged as collateral, respectively)	436,424		89,427
Total cash and cash equivalents	537,703		167,256
Interest-earning deposits greater than 90 days	7,626		3,730
Securities available-for-sale	912,429		1,135,317
Securities held-to-maturity	487,610		181,166
Loans held-for-sale	13,564		5,570
Loans	7,224,935		5,314,337
Less: Allowance for credit losses on loans	136,671		43,288
Total loans, net	7,088,264		5,271,049
Other investments	48,764		38,044
Fixed assets, net	53,169		60,013
Goodwill	260,567		210,344
Intangible assets, net	23,084		26,076
Other assets	318,791		235,226
Total assets	$	9,751,571	$	7,333,791
Liabilities and Shareholders' equity
Noninterest-bearing deposit accounts	$	2,711,828	$	1,327,348
Interest-bearing transaction accounts	1,768,497		1,367,444
Money market accounts	2,327,066		1,713,615
Savings accounts	627,903		536,169
Certificates of deposit:
Brokered	50,209		215,758
Other	499,886		610,689
Total deposits	7,985,389		5,771,023
Subordinated debentures and notes	203,637		141,258
FHLB advances	50,000		222,406
Other borrowings	271,081		230,886
Notes payable	30,000		34,286
Other liabilities	132,489		66,747
Total liabilities	8,672,596		6,466,606
Commitments and contingent liabilities (Note 18)
Shareholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 0 shares issued and outstanding	—		—
Common stock, $0.01 par value; 45,000,000 shares authorized; 33,190,306 and 28,067,087 shares issued, respectively	332		281
Treasury stock, at cost; 1,980,093 and 1,523,842 shares, respectively	(73,528)		(58,181)
Additional paid in capital	697,839		526,599
Retained earnings	417,212		380,737
Accumulated other comprehensive income	37,120		17,749
Total shareholders' equity	1,078,975		867,185
Total liabilities and shareholders' equity	$	9,751,571	$	7,333,791

See accompanying notes to consolidated financial statements.

64

ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Consolidated Statements of Operations

Years ended December 31, 2020, 2019, and 2018

	Year ended December 31,
($ in thousands, except per share data)	2020		2019		2018
Interest income:
Interest and fees on loans	$	270,238	$	269,406	$	217,212
Interest on debt securities:
Taxable	24,629		29,030		17,469
Nontaxable	8,397		3,515		1,074
Interest on interest-earning deposits	620		2,128		1,141
Dividends on equity securities	895		1,055		906
Total interest income	304,779		305,134		237,802
Interest expense:
Deposits	21,049		49,856		33,769
Subordinated debentures and notes	9,885		7,507		5,798
FHLB advances	2,673		6,668		5,556
Notes payable and other borrowings	1,171		2,386		774
Total interest expense	34,778		66,417		45,897
Net interest income	270,001		238,717		191,905
Provision for credit losses	65,398		6,372		6,644
Net interest income after provision for credit losses	204,603		232,345		185,261
Noninterest income:
Service charges on deposit accounts	11,717		12,801		11,749
Wealth management revenue	9,732		9,932		8,241
Card services revenue	9,481		9,154		6,686
Tax credit income	6,611		5,393		2,820
Miscellaneous income	16,962		11,896		8,851
Total noninterest income	54,503		49,176		38,347
Noninterest expense:
Employee compensation and benefits	92,288		81,295		66,039
Occupancy	13,457		12,465		9,550
Data processing	9,050		8,242		6,321
Professional fees	3,940		3,683		3,134
Merger-related expenses	4,174		17,969		1,271
Other	44,250		41,831		32,716
Total noninterest expense	167,159		165,485		119,031
Income before income tax expense	91,947		116,036		104,577
Income tax expense	17,563		23,297		15,360
Net income	$	74,384	$	92,739	$	89,217
Earnings per common share
Basic	$	2.76	$	3.56	$	3.86
Diluted	2.76		3.55		3.83

See accompanying notes to consolidated financial statements.

65

ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

Years ended December 31, 2020, 2019, and 2018

	Year ended December 31,
($ in thousands)	2020		2019		2018
Net income	$	74,384	$	92,739	$	89,217
Other comprehensive income (loss), net of tax:
Change in unrealized gain (loss) on available-for-sale debt securities	23,944		29,189		(4,626)
Reclassification adjustment for realized (gain) loss on the sale of available-for-sale debt securities	(317)		37		(7)
Reclassification of (gain) loss on held-to-maturity securities	(1,910)		(33)		3
Change in unrealized loss on cash flow hedges arising during the period	(5,947)		(2,262)		—
Reclassification of loss on cash flow hedges	3,601		100		—
Other comprehensive income (loss), net	19,371		27,031		(4,630)
Total comprehensive income	$	93,755	$	119,770	$	84,587

See accompanying notes to consolidated financial statements.

66

ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Consolidated Statements of Shareholders’ Equity

 Years ended December 31, 2020, 2019, and 2018

($ in thousands, except per share data)	Common Stock		Treasury Stock		Additional paid in capital		Retained earnings		Accumulated other comprehensive income (loss)		Total shareholders’ equity
Balance December 31, 2017	$	238	$	(23,268)	$	350,061	$	225,360	$	(3,818)	$	548,573
Net income	$	—	$	—	$	—	$	89,217	$	—	$	89,217
Other comprehensive loss, net	—		—		—		—		(4,630)		(4,630)
Cash dividends paid on common shares, $0.47 per share	—		—		—		(10,845)		—		(10,845)
Repurchase of common shares, 435,435 shares	—		(19,387)		—		—		—		(19,387)
Issuance under equity compensation plans, 157,882 shares, net	1		—		(2,577)		—		—		(2,576)
Share-based compensation	—		—		3,452		—		—		3,452
Reclassification adjustments for change in accounting policies	—		—		—		834		(834)		—
Balance December 31, 2018	$	239	$	(42,655)	$	350,936	$	304,566	$	(9,282)	$	603,804
Net income	$	—	$	—	$	—	$	92,739	$	—	$	92,739
Other comprehensive income, net	—		—		—		—		27,031		27,031
Cash dividends paid on common shares, $0.62 per share	—		—		—		(16,568)		—		(16,568)
Repurchase of common shares, 396,737 shares	—		(15,526)		—		—		—		(15,526)
Issuance under equity compensation plans, 137,271 shares, net	2		—		(214)		—		—		(212)
Shares issued in connection with acquisition of Trinity Capital Corporation, 3,990,822 shares	40		—		171,845		—		—		171,885
Share-based compensation	—		—		4,032		—		—		4,032
Balance December 31, 2019	$	281	$	(58,181)	$	526,599	$	380,737	$	17,749	$	867,185
Net income	$	—	$	—	$	—	$	74,384	$	—	$	74,384
Other comprehensive income, net	—		—		—		—		19,371		19,371
Cash dividends paid on common shares, $0.72 per share	—		—		—		(19,795)		—		(19,795)
Repurchase of common shares	—		(15,347)		—		—		—		(15,347)
Issuance under equity compensation plans, 146,005 shares, net	1		—		77		—		—		78
Shares issued in connection with acquisition of Seacoast Commerce Banc Holdings, 4,977,214 shares	50		—		166,985		—		—		167,035
Share-based compensation	—		—		4,178		—		—		4,178
Reclassification for the adoption of ASU 2016-13 (CECL)	—		—		—		(18,114)		—		(18,114)
Balance December 31, 2020	$	332	$	(73,528)	$	697,839	$	417,212	$	37,120	$	1,078,975

See accompanying notes to consolidated financial statements.

67

ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Consolidated Statements of Cash Flows

Years ended December 31, 2020, 2019, and 2018

	Year ended December 31,
($ in thousands)	2020		2019		2018
Cash flows from operating activities:
Net income	$	74,384	$	92,739	$	89,217
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,152		5,719		3,532
Provision for credit losses	65,398		6,372		6,644
Deferred income taxes	(12,578)		5,800		3,307
Net amortization of debt securities	6,745		2,973		1,691
Amortization of intangible assets	5,673		5,543		2,503
Gain on sale of investment securities
Mortgage loans originated-for-sale	(223,094)		(81,941)		(36,229)
Proceeds from mortgage loans sold	217,934		77,302		39,310
Loss (gain) on:
Sale of investment securities	(421)		49		(9)
Sale of other real estate	13		(113)		(13)
Sale of state tax credits	(2,016)		(2,549)		(2,820)
Share-based compensation	4,178		4,032		3,452
Net accretion of loan discount	(7,767)		(10,494)		(1,700)
Changes in other assets and liabilities, net	913		(12,975)		(77)
Net cash provided by operating activities	135,514		92,457		108,808
Cash flows from investing activities:
Acquisition cash purchase price, net of cash and cash equivalents acquired	62,114		(23,377)		—
Net increase in loans	(700,096)		(284,235)		(257,872)
Proceeds received from:
Sale of debt securities, available-for-sale	20,221		357,976		1,451
Paydown or maturity of debt securities, available-for-sale	329,350		146,132		84,189
Paydown or maturity of debt securities, held-to-maturity	41,377		7,447		6,397
Redemption of other investments	43,555		61,917		50,274
Sale of state tax credits held-for-sale	14,252		14,689		14,718
Sale of other real estate	652		4,798		875
Settlement of bank-owned life insurance policies	1,993		—		1,256
Payments for the purchase of:
Available for sale debt securities	(452,541)		(577,211)		(172,026)
Other investments	(50,421)		(68,963)		(51,828)
State tax credits held-for-sale	(11,026)		(11,356)		(6,017)
Fixed assets	(2,259)		(6,337)		(3,035)
Net cash used in investing activities	(702,829)		(378,520)		(331,618)

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	Year ended December 31,
($ in thousands)	2020		2019		2018
Cash flows from financing activities:
Net increase (decrease) in noninterest-bearing deposit accounts	627,756		57,551		(23,189)
Net increase in interest-bearing deposit accounts	505,604		44,300		454,760
Proceeds from the issuance of subordinated notes	61,953		—		—
Proceeds (repayments) from short-term FHLB advances, net	(172,300)		95,500		(102,500)
Proceeds from long-term FHLB advances	—		50,000		—
Repayment of PPPLF advances	(86,096)		—		—
Proceeds from notes payable	—		41,000		2,000
Repayments of notes payable	(4,286)		(8,714)		—
Net increase (decrease) in other borrowings	40,195		9,436		(32,224)
Cash dividends paid on common stock	(19,795)		(16,568)		(10,845)
Repurchase of common stock	(15,347)		(15,526)		(19,387)
Payments for the issuance of equity instruments, net	78		(212)		(2,576)
Net cash provided by financing activities	937,762		256,767		266,039
Net (decrease) increase in cash and cash equivalents	370,447		(29,296)		43,229
Cash and cash equivalents, beginning of period	167,256		196,552		153,323
Cash and cash equivalents, end of period	$	537,703	$	167,256	$	196,552
Supplemental disclosures of cash flow information:
Cash paid during the period for:
Interest	$	35,423	$	65,667	$	45,650
Income taxes	7,514		13,582		10,136
Noncash transactions:
Transfer to other real estate owned in settlement of loans	$	798	$	8,148	$	876
Sales of other real estate financed	48		621		—
Transfer of securities from available-for-sale to held-to-maturity	352,665		116,303		—
Transfer to loans from fixed assets for deconsolidation of partnership	3,336		—		—
Right-of-use assets obtained in exchange for lease obligations	1,623		5,208		—
Common shares issued in connection with acquisitions	167,035		171,885		—

See accompanying notes to consolidated financial statements.

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ENTERPRISE FINANCIAL SERVICES CORP AND SUBSIDIARIES

Notes to Consolidated Financial Statements

NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The significant accounting policies used by the Company in the preparation of the consolidated financial statements are summarized below.

Business and Consolidation

Enterprise is a financial holding company that provides a full range of banking and wealth management services to individuals and corporate customers primarily located in the Arizona, California, Kansas, Missouri, Nevada, and New Mexico markets through its banking subsidiary, Enterprise Bank & Trust. All intercompany accounts and transactions have been eliminated.

The Company and its banking subsidiary are subject to the regulations of certain federal and state agencies and undergo periodic examinations by those regulatory agencies. The Company has one operating segment.

Use of Estimates

The consolidated financial statements of the Company have been prepared in conformity with GAAP. In preparing the consolidated financial statements, management is required to make estimates and assumptions, which significantly affect the reported amounts in the consolidated financial statements. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

Cash Flow Information

For purposes of reporting cash flows, the Company considers cash and due from banks, interest-bearing deposits and federal funds sold that mature within 90 days of the balance sheet date to be cash and cash equivalents. At December 31, 2019, approximately $9.7 million of cash and due from banks represented required reserves on deposits maintained by the Company in accordance with Federal Reserve requirements. There were no required reserves on December 31, 2020.

Recent Accounting Pronouncements

On January 1, 2020, the Company adopted ASU 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” (ASU 2016-13) which replaces the incurred loss methodology with an expected loss methodology commonly referred to as the CECL methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures such as loan commitments, standby letters of credit, financial guarantees, and other similar instruments. In addition, this standard made changes to the accounting for available-for-sale debt securities, including the requirement for credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities.

The Company adopted this standard using the modified retrospective method for all financial assets measured at amortized cost, and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under the new standard while prior period amounts continue to be reported in accordance with

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previously applicable GAAP. The Company recorded an after-tax decrease to retained earnings of $18.1 million as of January 1, 2020 for the cumulative effect of adopting this standard.

The Company adopted this standard using the prospective transition approach for PCD assets that were previously classified as PCI assets. Management did not reassess whether PCI assets met the criteria of PCD assets as of the date of the adoption.

The Company elected not to maintain PCI pools for certain loans which are now accounted for individually. Thus they are now included in nonperforming and classified loans. Management did not reassess whether modifications to individual acquired financial assets accounted for in pools were troubled debt restructurings as of the date of adoption.

The following table illustrates the impact of adoption:

($ in thousands)	December 31, 2019		Impact of Adoption		January 1, 2020
Assets:
Loans	$	5,314,337	$	7,091	$	5,321,428
Allowance for credit losses on loans	43,288		28,387		71,675
Allowance for credit losses on held-to-maturity debt securities	—		303		303
Deferred tax asset	14,851		5,898		20,749
Liabilities:
Reserve for unfunded commitments	430		2,413		2,843
Shareholders’ Equity
Retained Earnings	380,737		(18,114)		362,623

On January 1, 2020, the Company adopted ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”. The Company previously selected the option to adopt the removal or modification of disclosures during the second quarter of 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty are applied prospectively for only the most recent interim or annual period presented. All other amendments are applied retrospectively to all periods presented upon their effective date. The adoption of this update did not have a material effect on the Company's consolidated financial statements.

On January 1, 2020, the Company adopted ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, (ASU 2017-04). ASU 2017-04 simplifies the quantitative measurement of goodwill by eliminating Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The adoption of this update did not have a material effect on the Company's consolidated financial statements.

ASU 2021-01, Reference Rate Reform (Topic 848): Scope (ASU 2021-01). ASU 2021-01 was issued in January 2021 and provided optional expedients and exceptions in ASC 848 to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendment only applies to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do

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not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this update were effective immediately upon issuance and did not have a material effect on the Company's consolidated financial statements.

Investments

The Company has classified all investments in debt securities as available-for-sale or held-to-maturity.

Securities classified as available-for-sale are carried at fair value. Unrealized holding gains and losses for available-for-sale securities are excluded from earnings and reported as a net amount in a separate component of shareholders’ equity until realized. All previous fair value adjustments included in the separate component of shareholders’ equity are reversed upon sale.

Securities classified as held-to-maturity are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts.

Prior to the adoption of ASU 2016-13 on January 1, 2020, declines in the fair value of securities below their cost deemed to be other-than-temporary were reflected in operations as realized losses. In estimating other-than-temporary impairment losses, management evaluated investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis required management to consider various factors, which included (1) the present value of the cash flows expected to be collected compared to the amortized cost of the security, (2) duration and magnitude of the decline in value, (3) the financial condition of the issuer or issuers, (4) structure of the security, and (5) the intent to sell the security or whether it’s more likely than not the Company would be required to sell the security before its anticipated recovery in market value.

An ACL on held-to-maturity securities is deducted from the amortized cost basis of the securities to reflect the expected amount to be collected. When it is determined that a security will not be collected, the balance is written-off through the allowance. In evaluating the need for an ACL, securities with similar risk characteristics are grouped and an estimate of expected cash flows is determined using historical loss experience, adjusted for current and reasonable and supportable forecasts of economic conditions.

For available-for-sale securities in a loss position, the Company evaluates whether the decline in fair value below amortized cost resulted from a credit loss or other factors. Losses attributed to credit are recognized through an ACL on available-for-sale securities, limited to the amount that the fair value of securities is less than the amortized cost basis. In assessing credit loss, the Company considers, among other things, (1) the extent to which fair value is less than the amortized cost basis, (2) adverse conditions specific to the security or industry, (3) historical payment patterns, (4) the likelihood of future payments, and (5) changes to the rating of a security by a rating agency.

The Company has elected to exclude accrued interest receivable balances from the estimate of the ACL as these amounts are timely written off as a credit loss expense. Adjustments to the ACL on held-to-maturity and available-for-sale securities are recognized as a component of the provision for credit losses in the Consolidated Statements of Operations.

Premiums and discounts are amortized or accreted over the expected lives of the respective securities as an adjustment to yield using the interest method. Dividend and interest income is recognized when earned. Realized gains and losses are included in earnings and are derived using the specific identification method for determining the cost of securities sold.

Loans Held-for-Sale and Servicing Assets

The Company provides long-term financing of one-to-four-family residential real estate by originating fixed and variable rate loans. Long-term fixed and variable rate loans are usually sold into the secondary market with limited recourse. Upon receipt of an application for a real estate loan, the Company determines whether the loan will be sold into the secondary market or retained in the Company’s loan portfolio. The interest rates on the loans sold are

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locked with the buyer and the Company bears no interest rate risk related to these loans. Mortgage loans held-for-sale are carried at the lower of cost or fair value, which is determined on a specific identification method. The Company does not retain servicing on these loans.

The Company also originates SBA7(a) loans that generally provides for a guarantee of 75% up to a maximum amount. The guaranteed portion of the loan can be sold in an active secondary market. For the year ended December 31, 2020, all SBA7(a) loans are considered held-for-investment; however, as the Company makes the determination to sell the loans, they will be moved into the held-for-sale category. Sales of SBA guaranteed loans are executed on a servicing retained basis, and the Company retains the rights and obligations to service the loans. At December 31, 2020, the Company was servicing $296 million in SBA loans and has recorded a related servicing asset of $5.7 million. The servicing asset is accounted for under the amortization method and is evaluated for impairment. Amortization of the servicing asset is recorded as a reduction to servicing income.

Gains on the sale of loans held-for-sale are reported net of direct origination fees and costs in the Company’s Consolidated Statements of Operations.

Loans

Loans are reported at the principal balance outstanding, net of unearned fees, costs, and premiums or discounts on acquired loans. Loan origination fees, direct origination costs, and premiums or discounts resulting from acquired loans are deferred and recognized over the lives of the related loans as a yield adjustment using the interest method.

Interest on loans is accrued to income based on the principal balance outstanding. The recognition of interest income is discontinued when a loan becomes 90 days past due or a significant deterioration in the borrower’s credit has occurred which, in management’s judgment, negatively impacts the collectibility of the loan. Unpaid interest on such loans is reversed at the time the loan becomes uncollectible and subsequent interest payments received are generally applied to principal if any doubt exists as to the collectibility of such principal. Loans that have not been restructured are returned to accrual status when management believes full collectibility of principal and interest is expected. Non-accrual loans that have been restructured will remain in a non-accrual status until the borrower has made at least six months of consecutive contractual payments.

The Company has elected to present the accrued interest receivable balance separate from amortized cost basis, to exclude accrued interest receivable balances from the tabular disclosures, and not to estimate an ACL on accrued interest receivable as these amounts are timely written off as a credit loss expense.

Accrued interest receivable totaled $31.1 million at December 31, 2020 and was reported in Other Assets on the consolidated balance sheets.

Acquired Loans

Prior to the adoption of ASU 2016-13 on January 1, 2020, PCI loans were acquired in a business combination or transaction, had evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that the Company would be unable to collect all contractually required payments receivable. PCI loans were initially recorded at fair value (as determined by the present value of expected future cash flows) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loans, or the “accretable yield,” was recognized as interest income on a level-yield method over the life of the loans. Contractually required payments for interest and principal that exceeded the undiscounted cash flows expected at acquisition, or the “nonaccretable difference,” were not recognized as a yield adjustment or as a loss accrual or a valuation allowance. The Company aggregated individual loans with common risk characteristics into pools of loans. Increases in expected cash flows subsequent to the initial investment were recognized prospectively through adjustment of the yield on the loans over their remaining lives. Decreases in expected cash flows due to an inability to collect contractual cash flows were recognized as impairment through the provision for loan losses account. Any allowance for loan loss on these pools reflected only losses incurred after the acquisition. Disposals of loans, including sales of loans, paydowns, payments in full or foreclosures resulted in the removal or reduction of the loan from the loan pool.

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Subsequent to the adoption of ASU 2016-16, acquired loans are separated into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (PCD), for loans which have experienced more than insignificant credit deterioration since origination, or loans with no credit deterioration (non-PCD). At the date of acquisition, an ACL on PCD loans is determined and added to the amortized cost basis of the individual loans. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. The ACL on PCD loans is recorded in the acquisition accounting and no provision for credit losses is recognized at the acquisition date. Subsequent changes to the ACL are recorded through provision expense. For non-PCD loans, an ACL is established immediately after the acquisition through a charge to the provision for credit losses.

The ACL for both PCD and non-PCD is determined by pooling loans with similar risk characteristics and using the approach discussed below under “Allowance for Credit Losses on Loans”.

Impaired Loans

Loans are considered “impaired” when it becomes probable that the Company will be unable to collect all amounts due according to the loan’s contractual terms. Non-accrual loans, loans past due greater than 90 days and still accruing, unless adequately secured and in the process of collection, and restructured loans qualify as “impaired loans.” Restructured loans involve the granting of a concession on the terms of a loan to a borrower experiencing financial difficulty. Concessions may be granted in various forms, including changes in payment schedule or interest rate.

When measuring impairment, the expected future cash flows of an impaired loan are discounted at the loan’s effective interest rate at origination. Alternatively, impairment can be measured by reference to an observable market price, if one exists, or the fair value of the collateral for a collateral-dependent loan. Loans and leases, which are deemed uncollectible, are charged off to the allowance for credit losses, while recoveries of amounts previously charged off are credited to the allowance for credit losses.

Loans are generally placed on non-accrual status when contractually past due 90 days or more as to interest or principal payments. Additionally, whenever management becomes aware of facts or circumstances that may adversely impact the collectability of principal or interest on loans, it is management’s practice to place such loans on non-accrual status immediately, rather than delaying such action until the loans become 90 days past due. Previously accrued and uncollected interest on such loans is reversed. Income is recorded only to the extent that a determination has been made that the principal balance of the loan is collectible and the interest payments are subsequently received in cash, or for a restructured loan, the borrower has made six consecutive contractual payments. If collectibility of the principal is in doubt, payments received are applied to loan principal.

Loans past due 90 days or more but still accruing interest are also generally included in nonperforming loans. Loans past due 90 days or more but still accruing are classified as such where the underlying loans are both well secured (the collateral value covers principal and accrued interest) and in the process of collection.

Allowance for Credit Losses on Loans

The ACL on loans is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected. Loans are charged-off against the allowance when management believes the uncollectibility of a loan balance is confirmed.

Management estimates the allowance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in environmental conditions, such as changes in unemployment rates, property values, or other relevant factors.

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The ACL on loans is measured on a collective basis when similar risk characteristics exist. The Company has identified the following portfolio segments:

C&I – C&I loans consist of loans to small and medium-sized businesses in a wide variety of industries. These loans are generally collateralized by inventory, accounts receivable, equipment, real estate and other commercial assets, and may be supported by other credit enhancements such as personal guarantees. Risk arises primarily due to a difference between expected and actual cash flows of the borrower. However, the recoverability of these loans is also dependent on other factors primarily dictated by the type of collateral securing these loans. The fair value of the collateral securing these loans may fluctuate as market conditions change. Included within C&I are revolving loans supported by borrowing bases that fluctuate depending on the amount of underlying collateral. A portion of C&I loans consists of sponsor finance, which are loans with senior debt exposure to private equity backed companies.

CRE – CRE loans include various types of loans for which the Company holds real property as collateral. Commercial real estate lending activity is typically restricted to owner-occupied properties or to investor properties that are owned by customers with a current banking relationship. The primary risks of CRE loans include the borrower’s inability to pay, material decreases in the value of the real estate being held as collateral and significant increases in interest rates, which may make the real estate mortgage loan unprofitable. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy.

Construction and Land Development – The Company originates loans to finance construction projects including one- to four-family residences, multifamily residences, commercial office, and industrial projects. Construction loans are generally collateralized by first liens on the real estate and have floating interest rates. Construction loans are considered to have higher risks due to construction completion and timing risk, and the ultimate repayment being sensitive to interest rate changes, governmental regulation of real property and the availability of long-term financing. Additionally, economic conditions may impact the Company’s ability to recover its investment in construction loans. Adverse economic conditions may negatively impact the real estate market which could affect the borrowers’ ability to complete and sell the project. Additionally, the fair value of the underlying collateral may fluctuate as market conditions change.

Residential Real Estate – The Company originates loans to finance one- to four-family residences, secured by both first and second liens. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Residential loans with a second lien are inherently riskier due to the junior lien position.

Agricultural – Agricultural loans are generally secured with equipment, cattle, crops or other non-real property and at times the underlying real property. Agricultural loans are primarily included as a component of CRE and C&I loans.

Consumer – The Company provides a broad range of consumer loans to customers, including personal lines of credit, credit cards and automobile loans. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Consumer loans are included as a component of Other loans.

The Company utilizes a DCF method to measure the ACL on loans collectively evaluated that are sub-segmented by credit risk levels. The DCF method incorporates assumptions for probability of default, loss given default, prepayments and curtailments over the contractual term of the loans. In determining the probability of default, the Company utilized a regression analysis to determine certain economic factors that are relevant loss drivers in the portfolio segments based on historical or peer evaluations. National unemployment is a loss driver used in nearly all portfolios, except Consumer. The annual percentage change in gross domestic product is also used in C&I, Construction, Agricultural and Consumer portfolios. The annual percentage change in a commercial real estate index, national house price index and the consumer price index are used in the CRE, Residential Real Estate and Consumer portfolios, respectively. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company.

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The Company uses a one-year reasonable and supportable forecast that considers baseline, upside and downside economic scenarios. For periods beyond the forecast period, the Company reverts to historical loss rates on a straight-line basis over a one-year period.

Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate.

Loan Charge-Offs

Loans are charged-off when the primary and secondary sources of repayment (cash flow, collateral, guarantors, etc.) are less than their carrying value.

Other Real Estate

Other real estate represents property acquired through foreclosure or deeded to the Company in lieu of foreclosure on loans on which the borrowers have defaulted on the payment of principal or interest. Other real estate is recorded on an individual asset basis at the lower of cost or fair value less estimated costs to sell. The fair value of other real estate is based upon estimates of future cash flows, market value of similar assets, if available, or independent appraisals. These estimates involve significant uncertainties and judgments. As a result, fair value estimates may not be realizable in a current sale or settlement of the other real estate. Subsequent reductions in fair value are expensed within noninterest expense.

Gains and losses resulting from the sale of other real estate are credited or charged to current period earnings. Costs of maintaining and operating other real estate are expensed as incurred, and expenditures to complete or improve other real estate properties are capitalized if the expenditures are expected to be recovered upon ultimate sale of the property.

Fixed Assets

Buildings, leasehold improvements, furniture, fixtures, equipment, and capitalized software are stated at cost less accumulated depreciation. All categories are computed using the straight-line method over their respective estimated useful lives. Furniture, fixtures and equipment is depreciated over three to ten years, buildings and leasehold improvements over ten to forty years, and capitalized software over three years based upon estimated lives or lease obligation periods.

State Tax Credits

The Company has purchased the rights to receive 10-year streams of state tax credits at agreed upon discount rates and sells such tax credits to its clients and others. State tax credits are accounted for at cost. The Company is also a minority partner in a joint venture, accounted for as an equity method investment, that purchases state income tax credits for resale to customers. Income from both the sale of state tax credits and earnings from the joint venture are reported as tax credit income in the Consolidated Statements of Operations.

Cash Surrender Value of Life Insurance

The Company has purchased bank-owned life insurance policies on certain bank officers. Bank-owned life insurance is recorded at its cash surrender value. Changes in the cash surrender values, including death benefits in excess of the carrying amount, are included in noninterest income.

Federal Home Loan Bank Stock

The Bank, as a member of the FHLB, is required to maintain an investment in the capital stock of the FHLB. The stock is redeemable at par by the FHLB, and is, therefore, carried at cost and periodically evaluated for impairment. The Company records FHLB dividends in interest income.

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Goodwill and Other Intangible Assets

The Company tests goodwill for impairment on an annual basis and whenever events or changes in circumstances indicate that the Company may not be able to recover the respective asset’s carrying amount. The Company’s annual test for impairment was performed in the fourth quarter of December 31, 2020. Such tests involve the use of estimates and assumptions. Core deposit intangibles are amortized using an accelerated method over an estimated useful life of approximately 10 years.

Potential impairments to goodwill must first be identified by performing a qualitative assessment which evaluates relevant events or circumstances to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If this test indicates it is more likely than not that goodwill has been impaired, then a quantitative impairment test is completed. The quantitative impairment test calculates the fair value of the reporting unit and compares it with its carrying amount, including goodwill. If the carrying amount of goodwill exceeds its implied fair market value, an impairment loss is recognized. That loss is equal to the carrying amount of goodwill that is in excess of its implied fair market value.

Impairment of Long-Lived Assets

Long-lived assets, such as fixed assets and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposal group classified as held-for-sale are presented separately in the appropriate asset and liability sections of the balance sheet.

Derivative Financial Instruments and Hedging Activities

The Company uses derivative financial instruments to assist in the management of interest rate sensitivity and to modify the repricing, maturity and option characteristics of certain assets and liabilities. In addition, the Company also offers an interest rate hedge program that includes interest rate swaps to assist its customers in managing their interest rate risk profile. In order to eliminate the interest rate risk associated with offering these products, the Company enters into derivative contracts with third parties to offset the customer contracts. 

Derivative instruments are required to be measured at fair value and recognized as either assets or liabilities in the consolidated financial statements. Fair value represents the payment the Company would receive or pay if the item were sold or bought in a current transaction. The accounting for changes in fair value (gains or losses) of a hedged item is dependent on whether the related derivative is designated and qualifies for “hedge accounting.” The Company assigns derivatives to one of these categories at the purchase date: cash flow hedge, fair value hedge, or non-designated derivatives. An assessment of the expected and ongoing hedge effectiveness of any derivative designated a fair value hedge or cash flow hedge is performed as required by the accounting standards. Derivatives are included in other assets and other liabilities in the consolidated balance sheets. The fair value amounts recognized for derivative instruments and the fair value amounts recognized for the right to reclaim or obligation to return cash collateral are not offset when represented under a master netting arrangement. Generally, the only derivative instruments used by the Company have been interest rate swaps, forward currency contracts, and interest rate caps.

Certain derivative financial instruments are not designated as cash flow or as fair value hedges for accounting purposes. These non-designated derivatives are intended to provide interest rate protection on net interest income or noninterest income but do not meet hedge accounting treatment. Customer accommodation interest rate swap contracts are not designated as hedging instruments. Changes in the fair value of these instruments are recorded in interest income or noninterest income in the consolidated statements of income depending on the underlying hedged item.

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Income Taxes

The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. We evaluate the need for deferred tax asset valuation allowances based on a more-likely-than-not standard. The ability to realize deferred tax assets depends on the ability to generate sufficient positive taxable income within the carryback or carryforward periods provided for in the laws for each applicable taxing jurisdiction. We consider the following possible sources of taxable income: future reversal patterns of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences, taxable income in prior carryback years and the availability of qualified tax planning strategies. The assessment regarding whether a valuation allowance is required or should be adjusted depends on all available positive and negative factors including, but not limited to, nature, frequency, and severity of recent losses, duration of available carryforward periods, experience with tax attributes expiring unused and near and medium term financial outlook. Because of the complexity of tax laws and regulations, interpretation can be difficult and subject to legal judgment given specific facts and circumstances. It is possible that others, given the same information, may at any point in time reach different reasonable conclusions regarding the estimated amounts of accrued taxes.

Stock-Based Compensation

Stock-based compensation is recognized as an expense for stock options, restricted stock awards, performance stock units, and restricted stock units granted to employees, directors, and advisors in return for service. Equity classified awards are measured at the grant date fair value using either an observable market value or a valuation methodology, and recognized over the requisite service period on a straight-line basis. Forfeitures are recorded as they occur. A description of the Company’s stock-based employee compensation plan is described in “Note 16 - Stockholders’ Equity and Compensation Plans.”

Acquisitions and Divestitures

Acquisitions and business combinations are accounted for using the acquisition method of accounting. The assets and liabilities of the acquired entities have been recorded at their estimated fair values at the date of acquisition. Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets.

The purchase price allocation process requires an estimation of the fair values of the assets acquired and the liabilities assumed. When a business combination agreement provides for an adjustment to the cost of the combination contingent on future events, the Company includes an estimate of the acquisition-date fair value as part of the cost of the combination. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. The results of operations of the acquired business are included in the Company’s consolidated financial statements from the date of acquisition.  Merger-related expenses include costs directly related to merger or acquisition activity and include legal and professional fees, system consolidation and conversion costs, and compensation costs such as severance and retention incentives for employees impacted by acquisition activity. The Company accounts for merger-related expenses in the periods in which the costs are incurred and the services are received.

For divestitures, the Company measures an asset (disposal group) classified as held-for-sale at the lower of its carrying value at the date the asset is initially classified as held-for-sale or its fair value less costs to sell. The Company reports the results of operations of an entity or group of components that either has been disposed of or held-for-sale as discontinued operations only if the disposal of that component represents a strategic shift that has or will have a major effect on an entity’s operations and financial results.

Any incremental direct costs incurred to transact the sale are allocated against the gain or loss on the sale. These costs would include items like legal fees, title transfer fees, broker fees, etc. Any goodwill and intangible assets associated with the portion of the reporting unit to be disposed of is included in the carrying amount of the business in determining the gain or loss on the sale.

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Basic and Diluted Earnings Per Common Share

Basic earnings per common share data is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Common shares outstanding include common stock and restricted stock awards where recipients have satisfied the vesting terms. Diluted earnings per common share gives effect to all dilutive potential common shares outstanding during the period using the treasury stock method.

Consolidated Statement of Comprehensive Income

The Consolidated Statement of Comprehensive Income includes the amount and the related tax impact that have been reclassified from accumulated other comprehensive income to net income. The classification adjustment for unrealized loss/gain on sale of securities included in net income has been recorded through the gain on sale of investment securities line item, within noninterest income, in the Company’s Consolidated Statements of Operations.  

Reclassifications

Certain amounts reported in prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or shareholders’ equity.

NOTE 2 - ACQUISITIONS & DIVESTITURES

The acquisitions noted below have been accounted for as business combinations using the acquisition method of accounting which requires assets acquired and liabilities assumed to be recognized at fair value as of the acquisition date. Goodwill arising from the acquisitions consist largely of the synergies and economies of scale expected from combining the operations into Enterprise. None of the goodwill recognized is expected to be deductible for income tax purposes.

The following tables present the assets acquired and liabilities assumed. Additional adjustments may be recorded during the measurement period specified in ASC 805, Business Combinations, as additional information becomes known.

Acquisition of Seacoast Commerce Banc Holdings

On November 12, 2020, the Company closed its acquisition of 100% of Seacoast and its wholly-owned subsidiary, Seacoast Commerce Bank. Seacoast operated five full-service retail and commercial banking offices in California and Nevada, as well as SBA loan production offices and deposit production offices in Arizona, California, Colorado, Illinois, Indiana, Massachusetts, Michigan, Nevada, Ohio, Oregon, Texas, Utah, and Washington.

Seacoast shareholders received 0.5061 shares of EFSC common stock for each Seacoast common share and cash in lieu of any fractional shares. In connection with the merger, Enterprise issued approximately 5.0 million shares of EFSC Common Stock valued at $33.56 per share, which was the closing price of Enterprise common stock on November 12, 2020. The value of the transaction consideration was approximately $169 million. The Company recognized $4.2 million of merger-related costs recorded in noninterest expense in the statement of operations for the year ended December 31, 2020.

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($ in thousands)	As Recorded by Seacoast		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	63,744	$	—		$	63,744
Loans	1,160,602		29,839		(a)	1,190,441
Other investments	12,100		—			12,100
Fixed assets	925		(275)		(b)	650
Accrued interest receivable	4,511		—			4,511
Goodwill	35,395		(35,395)		(c)	—
Intangible assets	1,513		1,168		(d)	2,681
Deferred tax assets	12,009		(8,687)		(e)	3,322
Other assets	35,025		(437)		(f)	34,588
Total assets acquired	$	1,325,824	$	(13,787)		$	1,312,037
Liabilities assumed:
Deposits	$	1,081,034	$	(28)	(f)	$	1,081,006
PPPLF advances	86,096		—			86,096
Accrued interest payable	185		—			185
Other liabilities	25,211		1,097		(f)	26,308
Total liabilities assumed	$	1,192,526	$	1,069		$	1,193,595
Net assets acquired	$	133,298	$	(14,856)		$	118,442
Consideration paid:
Cash						$	1,630
Common stock						167,035
Total consideration paid						$	168,665
Goodwill						$	50,223

(a)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Seacoast.

(b)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(c)Adjustment to eliminate goodwill.

(d)Eliminate acquired intangibles and record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(e)Adjustment for deferred taxes.

(f)Other miscellaneous fair value adjustments.

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2020 and 2019, as if the acquisition had occurred on January 1, 2019. The pro forma results combine the historical results of Seacoast with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including amortization and accretion of fair value adjustments. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2019. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2020 are included in net income in the table below. 

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	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2020		2019
Total revenue (net interest income plus noninterest income)	$	381,914	$	355,500
Net income	93,918		86,888
Diluted earnings per common share	3.00		2.79

Acquisition of Trinity Capital Corporation.

On March 8, 2019, the Company closed its acquisition of 100% of Trinity and its wholly-owned subsidiary, LANB. Trinity operated six full-service retail and commercial banking offices in Los Alamos, Santa Fe, and Albuquerque, New Mexico.

Trinity shareholders received cash consideration of $1.84 per share of Trinity common stock and 0.1972 shares of EFSC common stock per share of Trinity common stock with cash in lieu of fractional shares. Aggregate consideration at closing was approximately 4.0 million shares of EFSC common stock and $37.3 million cash paid to Trinity shareholders. Based on EFSC’s closing stock price of $43.07 on March 7, 2019, the overall transaction had a value of $209.2 million. The Company recognized $18.0 million and $1.3 million of merger-related costs recorded in noninterest expense in the statement of operations for the years ended December 31, 2019 and 2018, respectively.

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The following table presents the assets acquired and liabilities assumed of Trinity as of March 8, 2019.

($ in thousands)	As Recorded by Trinity		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	13,899	$	—		$	13,899
Interest-earning deposits greater than 90 days	100		—			100
Securities	428,715		(619)		(a)	428,096
Loans	705,057		(20,743)		(b)	684,314
Other real estate	5,284		(2,059)		(c)	3,225
Other investments	6,673		—			6,673
Fixed assets	27,586		(300)		(d)	27,286
Accrued interest receivable	3,997		—			3,997
Intangible assets	—		23,066		(e)	23,066
Deferred tax assets	10,708		(2,386)		(f)	8,322
Other assets	35,045		(1,484)		(g)	33,561
Total assets acquired	$	1,237,064	$	(4,525)		$	1,232,539
Liabilities assumed:
Deposits	$	1,081,151	$	36	(g)	$	1,081,187
Subordinated debentures	26,806		(3,972)		(g)	22,834
FHLB advances	6,800		171		(g)	6,971
Accrued interest payable	370		—			370
Other liabilities	5,842		(827)		(g)	5,015
Total liabilities assumed	$	1,120,969	$	(4,592)		$	1,116,377
Net assets acquired	$	116,095	$	67		$	116,162
Consideration paid:
Cash						$	37,275
Common stock						171,885
Total consideration paid						$	209,160
Goodwill						$	92,998

(a)Fair value adjustments of the securities portfolio.

(b)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Trinity.

(c)Fair value adjustment based on the Company’s evaluation of the acquired other real estate portfolio.

(d)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(e)Record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(f)Adjustment for deferred taxes.

(g)Other miscellaneous fair value adjustments.

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2019 and 2018, as if the acquisition had occurred on January 1, 2018. The pro forma results combine the historical results of Trinity with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including loan discount accretion, intangible assets amortization, and deposit and trust preferred securities premium accretion, net of taxes. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2018. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or

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asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2019 are included in net income in the table below. 

	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2019		2018
Total revenue (net interest income plus noninterest income)	$	296,677	$	286,076
Net income	107,626		85,579
Diluted earnings per common share	4.11		3.14

NOTE 3 - EARNINGS PER SHARE

The following table presents a summary of earnings per common share data and amounts for the periods indicated.

	Year ended December 31,
($ in thousands, except per share data)	2020		2019		2018
Net income	$	74,384	$	92,739	$	89,217
Weighted average common shares outstanding	26,954		26,045		23,100
Additional dilutive common stock equivalents	35		114		189
Weighted average diluted common shares outstanding	26,989		26,159		23,289
Basic earnings per common share:	$	2.76	$	3.56	$	3.86
Diluted earnings per common share:	$	2.76	$	3.55	$	3.83

For 2020 and 2019, common stock equivalents of approximately 156,000 and 21,000, respectively, were excluded from the earnings per share calculation because their effect would have been anti-dilutive. For 2018, the amount was immaterial.

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NOTE 4 - INVESTMENTS

The following table presents the amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity: 

	December 31, 2020
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	14,978	$	186	$	(3)	$	15,161
Obligations of states and political subdivisions	335,271		8,994		(33)		344,232
Agency mortgage-backed securities	506,703		20,190		(321)		526,572
Corporate debt securities	14,750		248		—		14,998
U.S. Treasury Bills	10,980		486		—		11,466
Total securities available-for-sale	$	882,682	$	30,104	$	(357)	$	912,429
Held-to-maturity securities:
Obligations of states and political subdivisions	$	248,324	$	2,814	$	—	$	251,138
Agency mortgage-backed securities	112,742		2,295		(496)		114,541
Corporate debt securities	126,993		8,851		—		135,844
Total securities held-to-maturity	$	488,059	$	13,960	$	(496)	$	501,523
Less: Allowance for credit losses	449
Total securities held-to-maturity, net	$487,610
	December 31, 2019
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	9,954	$	92	$	—	$	10,046
Obligations of states and political subdivisions	207,269		6,118		(363)		213,024
Agency mortgage-backed securities	888,129		15,083		(1,191)		902,021
U.S. Treasury Bills	9,971		255		—		10,226
Total securities available-for-sale	$	1,115,323	$	21,548	$	(1,554)	$	1,135,317
Held-to-maturity securities:
Obligations of states and political subdivisions	$	11,704	$	170	$	—	$	11,874
Agency mortgage-backed securities	46,346		675		—		47,021
Corporate debt securities	123,116		128		(200)		123,044
Total securities held-to-maturity	$	181,166	$	973	$	(200)	$	181,939

During 2020 and 2019, the Company transferred securities with a book value of $331.0 million and $116.3 million and fair value of $352.6 million and $123.2 million, respectively, from available-for-sale to held-to-maturity. The Company believes the held-to-maturity category is more consistent with the Company’s intent for these securities. The transfer of securities was made at fair value at the time of transfer. The unamortized portion of the unrealized holding gain at the time of transfer is retained in accumulated other comprehensive income and in the carrying value of held-to-maturity securities. Accordingly, the balance of held-to-maturity securities in the “Amortized cost”

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column in the table above includes a net unamortized unrealized gain of $25.6 million and $6.6 million at December 31, 2020 and 2019, respectively. Such amounts are amortized over the remaining life of the securities.

At December 31, 2020, and 2019, there were no holdings of securities of any one issuer in an amount greater than 10% of shareholders’ equity, other than the U.S. Government agencies and sponsored enterprises. The agency mortgage-backed securities are all issued by U.S. Government-sponsored enterprises. Securities having a fair value of $525.8 million and $484.8 million at December 31, 2020, and December 31, 2019, respectively, were pledged as collateral to secure deposits of public institutions and for other purposes as required by law or contract provisions.

The amortized cost and estimated fair value of debt securities at December 31, 2020, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the agency mortgage-backed securities is approximately 3 years. 

	Available-for-sale				Held-to-maturity
($ in thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	12,048	$	12,240	$	—	$	—
Due after one year through five years	21,977		22,629		11,589		12,040
Due after five years through ten years	19,711		20,105		132,613		141,252
Due after ten years	322,243		330,883		231,115		233,690
Agency mortgage-backed securities	506,703		526,572		112,742		114,541
	$	882,682	$	912,429	$	488,059	$	501,523

There were 30 available-for-sale securities and 73 available-for-sale and held-to-maturity securities in an unrealized loss position as of December 31, 2020 and December 31, 2019, respectively, included in the following tables:

	December 31, 2020
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of U.S. Government-sponsored enterprises	$	4,997	$	3	$	—	$	—	$	4,997	$	3
Obligations of states and political subdivisions	4,079		33		—		—		4,079		33
Agency mortgage-backed securities	65,986		321		—		—		65,986		321
	$	75,062	$	357	$	—	$	—	$	75,062	$	357
The following table presents a summary of available-for-sale and held-to-maturity investment securities in an unrealized loss position:
	December 31, 2019
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of states and political subdivisions	56,327		363		—		—		56,327		363
Agency mortgage-backed securities	131,693		756		41,491		435		173,184		1,191
Corporate debt securities	67,964		200		—		—		67,964		200
	$	255,984	$	1,319	$	41,491	$	435	$	297,475	$	1,754

The unrealized losses at both December 31, 2020, and 2019, were primarily attributable to changes in market interest rates since the securities were purchased. At December 31, 2020, the Company had not recorded an ACL on

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available-for-sale securities. At December 31, 2019, the Company had not recognized an other-than-temporary impairment.

Accrued interest receivable on held-to-maturity debt securities totaled $3.6 million at December 31, 2020 and is excluded from the estimate of expected credit losses. The estimate of expected credit losses considers historical credit loss information adjusted for current conditions and reasonable and supportable forecasts. At December 31, 2020, the ACL on held-to-maturity securities was $0.4 million.

 The gross gains and losses realized from sales of available-for-sale investment securities were as follows:

	December 31,
($ in thousands)	2020		2019		2018
Gross gains realized	$	421	$	400	$	9
Gross losses realized	—		(449)		—
Proceeds from sales	20,221		357,976		1,451

Other Investments

At December 31, 2020, and 2019, other investments totaled $48.8 million and $38.0 million, respectively. As a member of the FHLB system administered by the Federal Housing Finance Agency, the Bank is required to maintain a minimum investment in capital stock with the FHLB consisting of membership stock and activity-based stock. The FHLB capital stock of $10.8 million, and $15.7 million at December 31, 2020, and 2019, respectively, is recorded at cost, which represents redemption value, and is included in other investments in the consolidated balance sheets. The remaining amounts in other investments primarily include various investments in SBICs, CDFIs, and the Company’s investment in unconsolidated trusts used to issue preferred securities to third parties, see “Note 11 – Subordinated Debentures.”

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NOTE 5 - LOANS

Below is a summary of loans by category at December 31, 2020 and 2019:

($ in thousands)	December 31, 2020		December 31, 2019*
Commercial and industrial	$	3,100,299	$	2,361,157
Real estate loans:
Commercial - investor owned	1,589,419		1,299,884
Commercial - owner occupied	1,498,408		697,437
Construction and land development	546,686		457,273
Residential	319,179		366,261
Total real estate loans	3,953,692		2,820,855
Other	187,083		134,941
Loans, before unearned loan fees	7,241,074		5,316,953
Unearned loan fees, net	(16,139)		(2,616)
Loans, including unearned loan fees	$	7,224,935	$	5,314,337

*Includes $90.3 million of loans previously reported as PCI.

PPP loans totaled $709.9 million at December 31, 2020, or $698.6 million net of unearned fees of $11.3 million. The loan balance includes a net premium on acquired loans of $16.1 million at December 31, 2020, and a net discount of $36.0 million at December 31, 2019. At December 31, 2020 loans of $2.5 billion were pledged to FHLB and the Federal Reserve Bank.

Following is a summary of activity for the years ended December 31, 2020 and 2019 of loans to executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director. Such loans were made in the normal course of business on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other customers and did not involve more than the normal risk of collectibility.

($ in thousands)	December 31, 2020		December 31, 2019
Balance at beginning of year	$	5,475	$	17,169
New loans and advances	2,013		1,376
Payments and other reductions	(1,771)		(13,070)
Balance at end of year	$	5,717	$	5,475

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A summary of the activity, by loan category, in the allowance for loan losses for 2018 and 2019, excluding the allowance on PCI loans, and the ACL on loans for 2020 is as follows:

($ in thousands)	Commercial and industrial		CRE - investor owned		CRE - owner occupied		Construction and land development		Residential real estate		Other		Total
Balance at December 31, 2018
Allowance for loan losses:
Balance, beginning of year	$	26,406	$	3,890	$	3,308	$	1,487	$	2,237	$	838	$	38,166
Provision for loan losses	8,394		709		1,216		97		(583)		(20)		9,813
Charge-offs	(6,894)		—		(313)		(56)		(546)		(167)		(7,976)
Recoveries	1,133		84		28		459		508		80		2,292
Balance, end of year	$	29,039	$	4,683	$	4,239	$	1,987	$	1,616	$	731	$	42,295
Balance at December 31, 2019
Allowance for loan losses:
Balance, beginning of year	$	29,039	$	4,683	$	4,239	$	1,987	$	1,616	$	731	$	42,295
Provision for loan losses	4,801		1,708		673		(237)		(330)		67		6,682
Charge-offs	(6,882)		(551)		(58)		(54)		(667)		(382)		(8,594)
Recoveries	338		95		19		776		661		295		2,184
Balance, end of year	$	27,296	$	5,935	$	4,873	$	2,472	$	1,280	$	711	$	42,567
Balance at December 31, 2020
Allowance for credit losses:
Balance at December 31, 2019	$	27,296	$	5,935	$	4,873	$	2,472	$	1,280	$	711	$	42,567
PCI allowance at December 31, 2019	159		—		—		139		—		423		721
CECL adoption	6,494		10,726		2,598		5,183		3,470		(84)		28,387
PCD loans immediately charged off	—		(5)		(57)		(217)		(1,401)		—		(1,680)
Balance, beginning of year	$	33,949	$	16,656	$	7,414	$	7,577	$	3,349	$	1,050	$	69,995
Provision for loan losses	28,373		11,037		7,845		13,438		674		2,012		63,379
Initial allowance on acquired PCD loans	23		2,026		1,427		45		3		—		3,524
Charge-offs	(5,381)		(498)		(30)		(31)		(408)		(391)		(6,739)
Recoveries	1,848		2,841		356		384		967		116		6,512
Balance, end of year	$	58,812	$	32,062	$	17,012	$	21,413	$	4,585	$	2,787	$	136,671

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The ACL on sponsor finance loans, which is included in the categories above, represented $19.0 million as of December 31, 2020.

On January 1, 2020, the Company adopted the CECL methodology which added $28.4 million to the ACL on loans. Upon adoption, $1.7 million of nonaccrual PCD loans with individual outstanding balances of less than $100,000 were immediately charged-off. Under the CECL method, the Company recorded $63.4 million in provision for credit losses on loans in the twelve months ended December 31, 2020, compared to $6.7 million in provision for loan losses in the prior year period (excluding the allowance release on PCI loans), under the incurred loss method. The increase in the provision for credit losses in 2020 was primarily due to a change in economic forecasts from the end of 2019 due to the COVID-19 pandemic.

The CECL methodology incorporates various economic scenarios. The Company utilizes three forecasts in the model, Moody’s baseline, a stronger near-term growth upside and a moderate recession downside forecast. The Company weights these scenarios at 70%, 5%, and 25%, respectively, which added approximately $5.9 million to the ACL over the baseline model. These forecasts incorporate an accommodative monetary policy and the current impact of government stimulus. The Company has also recognized the risk posed by loans that have received multiple deferrals of principal and interest payments, including the hospitality sector, by allocating additional reserves to those segments. Some of the key risks to the forecasts that could result in future provision for credit losses are additional shutdowns and self-quarantines if another significant wave of COVID hits, small-business bankruptcies occur at higher levels, or unemployment increases.

In addition to the CECL methodology, the Company incorporates qualitative adjustments into the ACL on loans to capture credit risks inherent within the loan portfolio that are not captured in the DCF model. Included in these risks are 1) changes in lending policies and procedures, 2) actual and expected changes in business and economic conditions, 3) changes in the nature and volume of the portfolio, 4) changes in lending management, 5) changes in volume and the severity of past due loans, 6) changes in the quality of the loan review system, 7) changes in the value of underlying collateral, 8) the existence and effect of concentrations of credit and 9) other factors such as the regulatory, legal and competitive environments and events such as natural disasters and pandemics. At December 31, 2020, the ACL on loans included a qualitative adjustment of approximately $24.0 million. Of this amount, approximately $11.1 million was allocated to Sponsor Finance loans due to their unsecured nature and the increased risk associated with payment deferrals in that portfolio.

The recorded investment in nonperforming loans by category at December 31, 2020 and 2019 is as follows:

	December 31, 2020
($ in thousands)	Non-accrual		Restructured, accruing		Loans over 90 days past due and still accruing interest		Total nonperforming loans		Nonaccrual loans with no allowance
Commercial and industrial	$	18,158	$	3,482	$	130	$	21,770	$	8,316
Real estate:
Commercial - investor owned	9,579		—		—		9,579		716
Commercial - owner occupied	2,940		—		—		2,940		6,024
Residential	4,112		77		—		4,189
Other	29		—		—		29		3,190
Total	$	34,818	$	3,559	$	130	$	38,507	$	18,246

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	December 31, 2019
($ in thousands)	Non-accrual		Restructured, accruing		Loans over 90 days past due and still accruing interest		Total nonperforming loans		Nonaccrual loans with no allowance
Commercial and industrial	$	22,328	$	—	$	250	$	22,578	$	7,654
Real estate:
Commercial - investor owned	2,303		—		—		2,303		811
Commercial - owner occupied	213		—		—		213		213
Residential	1,251		79		—		1,330		1,120
Other	1		—		—		1		—
Total	$	26,096	$	79	$	250	$	26,425	$	9,798

The following table presents the amortized cost basis of collateral-dependent nonperforming loans by class of loan at December 31, 2020:

	Type of Collateral
(in thousands)	Commercial Real Estate		Residential Real Estate		Blanket Lien		Other
Commercial and industrial	$	8,316	$	—	$	394	$	—
Real estate:
Commercial - investor owned	9,579		—		—		—
Commercial - owner occupied	2,940		—		—		—
Residential	—		4,135		—		—
Other	—		—		—		17
Total	$	20,835	$	4,135	$	394	$	17

The recorded investment by category for loans restructured during the years ended December 31, 2020 and 2019 is as follows:

	Year ended December 31, 2020					Year ended December 31, 2019
($ in thousands, except for number of loans)	Number of Loans	Pre-Modification Outstanding Recorded Balance		Post-Modification Outstanding Recorded Balance		Number of Loans	Pre-Modification Outstanding Recorded Balance		Post-Modification Outstanding Recorded Balance
Commercial and industrial	3	$	7,447	$	7,447	—	$	—	$	—
Real estate:
Commercial - owner occupied	—	—		—		1	188		188
Residential	3	372		372		2	332		332
Total	6	$	7,819	$	7,819	3	$	520	$	520

Restructured loans primarily resulted from interest rate concessions. As of December 31, 2020, the Company allocated an immaterial amount in specific reserves to loans that have been restructured.

Loans restructured that subsequently defaulted during the year ended December 31, 2019 are as follows:

	Year ended December 31, 2019
($ in thousands, except for number of loans)	Number of Loans	Recorded Balance
Commercial and industrial	2	$	352
Total	2	$	352

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There were no restructured loans that subsequently defaulted during the year ended December 31, 2020.

In response to the COVID-19 pandemic, the Company has implemented short-term deferral programs allowing customers to primarily defer payments for up to 90 days. Deferrals under the CARES Act or interagency guidance are not included above as troubled debt restructurings. As of December 31, 2020, $687.8 million in loans have participated in the programs, including $340.0 million in loans deferring full principal and interest payments and $347.8 million in loans deferring principal only. As of December 31, 2020, $63.0 million loans remain in a deferral status. Interest of $4.1 million has been deferred and will be collected upon final maturity.

The aging of the recorded investment in past due loans by class and category at December 31, 2020 and 2019 is shown below:

	December 31, 2020
($ in thousands)	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
Commercial and industrial	$	8,652	$	12,928	$	21,580	$	3,067,415	$	3,088,995
Real estate:
Commercial - investor owned	734		9,301		10,035		1,579,384		1,589,419
Commercial - owner occupied	328		4,647		4,975		1,493,433		1,498,408
Construction and land development	13		—		13		546,673		546,686
Residential	2,071		2,118		4,189		314,990		319,179
Other	1,731		50		1,781		180,467		182,248
Total	$	13,529	$	29,044	$	42,573	$	7,182,362	$	7,224,935

	December 31, 2019
($ in thousands)	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
Commercial and industrial	$	5,679	$	8,212	$	13,891	$	2,331,932	$	2,345,823
Real estate:
Commercial - investor owned	321		1,492		1,813		1,261,168		1,262,981
Commercial - owner occupied	562		213		775		677,747		678,522
Construction and land development	308		—		308		449,072		449,380
Residential	4,689		595		5,284		349,908		355,192
Other	81		—		81		132,069		132,150
Total	$	11,640	$	10,512	$	22,152	$	5,201,896	$	5,224,048

The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as current financial information, historical payment experience, credit documentation, and current economic factors among other factors. This analysis is performed on a quarterly basis. The Company uses the following definitions for risk ratings:

•Grades 1, 2, and 3 – Includes loans to borrowers with a continuous record of strong earnings, sound balance sheet condition and capitalization, ample liquidity with solid cash flow, and whose management team has experience and depth within their industry.

•Grade 4 – Includes loans to borrowers with positive trends in profitability, satisfactory capitalization and balance sheet condition, and sufficient liquidity and cash flow.

•Grade 5 – Includes loans to borrowers that may display fluctuating trends in sales, profitability, capitalization, liquidity, and cash flow.

•Grade 6 – Includes loans to borrowers where an adverse change or perceived weakness has occurred, but may be correctable in the near future. Alternatively, this rating category may also include circumstances

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where the borrower is starting to reverse a negative trend or condition, or has recently been upgraded from a 7, 8, or 9 rating.

•Grade 7 – Watch credits are borrowers that have experienced financial setback of a nature that is not determined to be severe or influence ‘ongoing concern’ expectations. Although possible, no loss is anticipated, due to strong collateral and/or guarantor support.

•Grade 8 – Substandard credits will include those borrowers characterized by significant losses and sustained downward trends in balance sheet condition, liquidity, and cash flow. Repayment reliance may have shifted to secondary sources. Collateral exposure may exist and additional reserves may be warranted.

•Grade 9 – Doubtful credits include borrowers that may show deteriorating trends that are unlikely to be corrected. Collateral values may appear insufficient for full recovery, therefore requiring a partial charge-off, or debt renegotiation with the borrower. The borrower may have declared bankruptcy or bankruptcy is likely in the near term. All doubtful rated credits will be on non-accrual.

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The recorded investment by risk category of the loans by class at December 31, 2020, which is based upon the most recent analysis performed is as follows:

	Term Loans by Origination Year
(in thousands)	2020		2019		2018		2017		2016		Prior		Revolving Loans Converted to Term Loans		Revolving Loans		Total
Commercial and industrial
Pass (1-6)	$	1,402,276	$	454,729	$	262,258	$	132,832	$	25,057	$	58,315	$	14,118	$	527,170	$	2,876,755
Watch (7)	44,922		15,369		9,585		7,509		19,613		110		—		60,448		157,556
Classified (8-9)	6,602		9,219		3,115		3,964		4,490		1,080		1,281		22,432		52,183
Total Commercial and industrial	$	1,453,800	$	479,317	$	274,958	$	144,305	$	49,160	$	59,505	$	15,399	$	610,050	$	3,086,494
Commercial real estate-investor owned
Pass (1-6)	$	481,867	$	338,843	$	189,305	$	131,718	$	138,288	$	161,439	$	6,509	$	32,058	$	1,480,027
Watch (7)	32,308		19,722		6,656		—		9,647		17,370		—		—		85,703
Classified (8-9)	—		5,278		8,716		5,830		1,245		2,620		—		—		23,689
Total Commercial real estate-investor owned	$	514,175	$	363,843	$	204,677	$	137,548	$	149,180	$	181,429	$	6,509	$	32,058	$	1,589,419
Commercial real estate-owner occupied
Pass (1-6)	$	419,142	$	287,001	$	215,181	$	179,382	$	104,470	$	167,456	$	2,672	$	45,323	$	1,420,627
Watch (7)	13,657		5,257		3,113		6,198		4,338		8,460		1,776		941		43,740
Classified (8-9)	2,420		7,427		5,822		6,140		1,309		10,860		—		63		34,041
Total Commercial real estate-owner occupied	$	435,219	$	299,685	$	224,116	$	191,720	$	110,117	$	186,776	$	4,448	$	46,327	$	1,498,408
Construction real estate
Pass (1-6)	$	223,069	$	156,360	$	45,460	$	18,579	$	11,539	$	9,144	$	—	$	28,880	$	493,031
Watch (7)	2,544		86		34,179		11,632		—		2,499		—		—		50,940
Classified (8-9)	56		2,124		503		1		—		31		—		—		2,715
Total Construction real estate	$	225,669	$	158,570	$	80,142	$	30,212	$	11,539	$	11,674	$	—	$	28,880	$	546,686
Residential real estate
Pass (1-6)	$	57,059	$	27,907	$	17,718	$	17,138	$	27,443	$	92,657	$	1,172	$	66,902	$	307,996
Watch (7)	210		840		526		—		514		1,603		287		511		4,491
Classified (8-9)	571		733		121		14		898		3,181		—		253		5,771
Total residential real estate	$	57,840	$	29,480	$	18,365	$	17,152	$	28,855	$	97,441	$	1,459	$	67,666	$	318,258
Other
Pass (1-6)	$	43,526	$	28,195	$	30,074	$	9,646	$	5,641	$	17,027	$	—	$	40,779	$	174,888
Watch (7)	—		1		8		—		—		2,637		—		1		2,647
Classified (8-9)	—		18		19		13		—		17		8		4		79
Total Other	$	43,526	$	28,214	$	30,101	$	9,659	$	5,641	$	19,681	$	8	$	40,784	$	177,614

In the table above, loan originations in 2020 and 2019 with a classification of watch or classified primarily represent renewals or modifications initially underwritten and originated in prior years.

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For certain loans, primarily credit cards, the Company evaluates credit quality based on the aging status.

The following table presents the recorded investment on loans based on payment activity:

	December 31, 2020
(in thousands)	Performing		Non Performing		Total
Commercial and industrial	$	2,502	$	—	$	2,502
Real estate:
Residential	921		—		921
Other	4,612		21		4,633
Total	$	8,035	$	21	$	8,056

The recorded investment by risk category of the loans by class and category at December 31, 2019 is as follows:

	December 31, 2019
($ in thousands)	Pass (1-6)		Watch (7)		Classified (8 & 9)		Total*
Commercial and industrial	$	2,151,084	$	124,718	$	70,021	$	2,345,823
Real estate:
Commercial - investor owned	1,242,569		17,572		2,840		1,262,981
Commercial - owner occupied	643,276		28,773		6,473		678,522
Construction and land development	437,134		12,140		106		449,380
Residential	348,246		4,450		2,496		355,192
Other	132,096		3		51		132,150
Total	$	4,954,405	$	187,656	$	81,987	$	5,224,048

*Excludes $90.3 million of loans previously accounted for as PCI

The Company has purchased loans, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows:

($ in thousands)	At November 12, 2020
Par value of acquired loans	$	137,693
Allowance for credit losses	(3,524)
Non-credit premium	928
Purchase price of acquired loans	$	135,097

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NOTE 6 - LEASES

The Company has banking and limited-service facilities, datacenters, and certain equipment leased under agreements. Most of the leases expire between 2021 and 2025 and include one or more renewal options of up to 5 years. One lease expires in 2031. All leases are classified as operating leases.

	For the twelve months ended
($ in thousands)	December 31, 2020		December 31, 2019
Operating lease cost	$	3,207	$	3,301
Short-term lease cost	201		288
Total lease cost	$	3,408	$	3,589

Payments on operating leases included in the measurement of lease liabilities during each of the twelve months ended December 31, 2020 and 2019 totaled $3.3 million. Right-of-use assets obtained in exchange for lease obligations totaled $1.6 million and $5.2 million during the twelve months ended December 31, 2020 and 2019, respectively. The additions in 2020 were primarily from the Seacoast acquisition.

Supplemental balance sheet information related to leases was as follows:

	As of
($ in thousands)	December 31, 2020			December 31, 2019
Operating lease right-of-use assets, included in other assets	$	13,636		$	14,843
Operating lease liabilities, included in other liabilities	14,152			15,461
Operating leases
Weighted average remaining lease term	5 years			6 years
Weighted average discount rate	2.5		%	2.7		%

Maturities of operating lease liabilities were as follows:

($ in thousands)
Year	Amount
2021	$	4,043
2022	2,988
2023	2,622
2024	2,190
2025	978
Thereafter	2,266
Total operating lease liabilities, payments	15,087
Less: present value adjustment	935
Operating lease liabilities	$	14,152

Lessor income was $1.8 million and $0.9 million during the twelve months ended December 31, 2020, and 2019, respectively.

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NOTE 7 - DERIVATIVE FINANCIAL INSTRUMENTS

Risk Management Objective of Using Derivatives

The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s borrowings. The Company does not enter into derivative financial instruments for trading purposes.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The Company has executed a series of cash flow hedges to fix the effective interest rate for payments due on $62.0 million of LIBOR-based junior subordinated debentures to a weighted-average-fixed rate of 2.62%. Select terms of the hedges are as follows:

$ in thousands
Notional		Fixed Rate		Maturity Date
$	15,465	2.60	%	March 15, 2024
$	14,433	2.60	%	March 30, 2024
$	18,558	2.64	%	March 15, 2026
$	13,506	2.64	%	March 17, 2026

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are paid on the Company’s variable-rate debt. During the next twelve months, the Company estimates that an additional $1.5 million will be reclassified as an increase to interest expense. Concurrently with the repayment of $200 million of variable-rate FHLB advances in the fourth quarter of 2020, the Company terminated two interest rate swaps with a notional value of $200.0 million. A loss of $3.2 million was recognized on the termination of the swaps.

Non-designated Hedges

Derivatives not designated as hedges are not considered speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings as a component of other noninterest income.

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The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Balance Sheet as of December 31, 2020 and December 31, 2019.

	Notional Amount				Derivative Assets				Derivative Liabilities
($ in thousands)	December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019
Derivatives Designated as Hedging Instruments
Interest rate swap	$	61,962	$	61,962	$	—	$	—	$	5,987	$	2,872
Derivatives not Designated as Hedging Instruments
Interest rate swap	$	1,026,016	$	749,819	$	28,703	$	11,055	$	28,980	$	11,875

The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company’s financial instruments that are subject to offsetting as of December 31, 2020 and December 31, 2019. The gross amounts of assets or liabilities can be reconciled to the tabular disclosure of fair value. The tabular disclosure of fair value provides the location that financial assets and liabilities are presented on the Balance Sheet.

As of December 31, 2020
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	28,703	$	—	$	28,703	$	2	$	—	$	28,701
Liabilities:
Interest rate swap	$	34,967	$	—	$	34,967	$	2	$	34,903	$	62
Securities sold under agreements to repurchase	271,081		—		271,081		—		271,081		—
As of December 31, 2019
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	11,055	$	—	$	11,055	$	56	$	—	$	10,999
Liabilities:
Interest rate swap	$	14,747	$	—	$	14,747	$	56	$	14,573	$	118
Securities sold under agreements to repurchase	230,886		—		230,886		—		230,886		—

As of December 31, 2020, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $35.8 million. Further, the Company has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral of $36.5 million.

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NOTE 8 - FIXED ASSETS

A summary of fixed assets at December 31, 2020 and 2019, is as follows:

	December 31,
($ in thousands)	2020		2019
Land	$	13,389	$	14,079
Buildings and leasehold improvements	53,007		54,838
Furniture, fixtures and equipment	16,560		15,178
Capitalized software	1,373		1,373
	84,329		85,468
Less accumulated depreciation and amortization	31,160		25,455
Total fixed assets	$	53,169	$	60,013

Depreciation and amortization of fixed assets included in noninterest expense amounted to $6.2 million, $5.7 million, and $3.5 million in 2020, 2019, and 2018, respectively.

NOTE 9 - GOODWILL AND INTANGIBLE ASSETS

The table below presents a summary of goodwill:

($ in thousands)	Years ended December 31,
	2020		2019
Goodwill, beginning of year	$	210,344	$	117,345
Additions from acquisition	50,223		92,999
Goodwill, end of year	$	260,567	$	210,344

The table below presents a summary of intangible assets:

($ in thousands)	Years ended December 31,
	2020		2019
Core deposit intangible, net, beginning of year	$	26,076	$	8,553
Additions from acquisition	2,681		23,066
Amortization	(5,673)		(5,543)
Core deposit intangible, net, end of year	$	23,084	$	26,076

Amortization expense on the core deposit intangibles was $5.7 million, $5.5 million, and $2.5 million for the years ended December 31, 2020, 2019, and 2018, respectively. The core deposit intangibles are being amortized over a 10-year period.

The following table reflects the amortization schedule for the core deposit intangible at December 31, 2020.

Year	Core Deposit Intangible ($ in thousands)
2021	$	5,295
2022	4,517
2023	3,840
2024	3,162
2025	2,485
After 2025	3,785
	$	23,084

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NOTE 10 - DEPOSITS

Following is a summary of certificates of deposit maturities at December 31, 2020:

($ in thousands)	Brokered		Customer		Total
Less than 1 year	$	—	$	384,529	$	384,529
Greater than 1 year and less than 2 years	—		75,484		75,484
Greater than 2 years and less than 3 years	25,069		12,663		37,732
Greater than 3 years and less than 4 years	25,140		17,587		42,727
Greater than 4 years and less than 5 years	—		4,043		4,043
Greater than 5 years	—		5,580		5,580
	$	50,209	$	499,886	$	550,095

Certificates of deposit balances over the FDIC insurance limit of $250,000 were $169.5 million as of December 31, 2020.

Following is a summary of activity for the year ended December 31, 2020, for deposit accounts of executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director.

($ in thousands)	December 31, 2020
Balance at beginning of year	$	9,763
Deposits	2,441
Withdrawals	(4,961)
Balance at end of year	$	7,243

The Company is a participant in the Promontory Interfinancial Network, a network that offers deposit placement services such as CDARS and ICS, which offer products that qualify large deposits for FDIC insurance. At December 31, 2020, the Company had $7.3 million of CDARS deposits and $71.7 million of ICS deposits. At December 31, 2020 and 2019, overdraft deposits of $1.0 million and $2.1 million, respectively, were reclassified to loans.

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NOTE 11 - SUBORDINATED DEBENTURES

The amounts and terms of each issuance of the Company’s subordinated debentures at December 31, 2020 and 2019 were as follows:

	Amount				Maturity Date	Initial Call Date (1)	Interest Rate
($ in thousands)	2020		2019
EFSC Clayco Statutory Trust I	$	3,196	$	3,196	December 17, 2033	December 17, 2008	Floats @ 3MO LIBOR + 2.85%
EFSC Capital Trust II	5,155		5,155		June 17, 2034	June 17, 2009	Floats @ 3MO LIBOR + 2.65%
EFSC Statutory Trust III	11,341		11,341		December 15, 2034	December 15, 2009	Floats @ 3MO LIBOR + 1.97%
EFSC Clayco Statutory Trust II	4,124		4,124		September 15, 2035	September 15, 2010	Floats @ 3MO LIBOR + 1.83%
EFSC Statutory Trust IV	10,310		10,310		December 15, 2035	December 15, 2010	Floats @ 3MO LIBOR + 1.44%
EFSC Statutory Trust V	4,124		4,124		September 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VI	14,433		14,433		March 30, 2037	March 30, 2012	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VII	4,124		4,124		December 15, 2037	December 15, 2012	Floats @ 3MO LIBOR + 2.25%
JEFFCO Stat Trust I (2)	7,752		7,886		February 22, 2031	February 22, 2011	Fixed @ 10.20%
JEFFCO Stat Trust II (2)	4,443		4,388		March 17, 2034	March 17, 2009	Floats @ 3MO LIBOR + 2.75%
Trinity Capital Trust III (2)	5,272		5,206		September 8, 2034	September 8, 2009	Floats @ 3MO LIBOR + 2.70%
Trinity Capital Trust IV	10,310		10,302		November 23, 2035	August 23, 2010	Fixed @ 6.88%
Trinity Capital Trust V (2)	7,706		7,543		December 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.65%
Total junior subordinated debentures	92,290		92,132
5.75% Fixed-to-floating rate subordinated notes	63,250		—		June 1, 2030	June 1, 2025	Fixed @ 5.75% until June 1, 2025, then floats @ Benchmark rate (3 month term SOFR) + 5.66%
4.75% Fixed-to-floating rate subordinated notes	50,000		50,000		November 1, 2026	November 1, 2021	Fixed @ 4.75% until November 1, 2021, then floats @ 3MO LIBOR + 3.387%
Debt issuance costs	(1,903)		(874)
Total fixed-to-floating rate subordinated notes	111,347		49,126
Total subordinated debentures and notes	$	203,637	$	141,258
(1) Callable each quarter after initial call date.
(2) Purchase accounting adjustments are reflected in the balance and also impact the effective interest rate.

The Company has 13 unconsolidated statutory business trusts. These trusts issued preferred securities that were sold to third parties. The sole purpose of the trusts was to invest the proceeds in junior subordinated debentures of the Company that have terms identical to the trust preferred securities. The subordinated debentures, which are the sole assets of the trusts, are subordinate and junior in right of payment to all present and future senior and subordinated indebtedness and certain other financial conditions of the Company. The Company fully and unconditionally guarantees each trust’s securities obligations. Under current regulations, the trust preferred securities are included in tier 1 capital for regulatory capital purposes, subject to certain limitations.

The trust preferred securities are redeemable in whole or in part on or after their respective call dates. Mandatory redemption dates may be shortened if certain conditions are met. The securities are classified as subordinated debentures in the Company’s consolidated balance sheets. Interest on the subordinated debentures held by the trusts is recorded as interest expense in the Company’s consolidated statements of operations. The Company’s investment of $2.9 million at December 31, 2020, in these trusts is included in other investments in the consolidated balance sheets. The Company has fixed the interest rate on a portion of its junior subordinated debentures through a series of interest rate swaps. For further discussion of the interest rate swaps and the corresponding terms, see “Note 7 - Derivative Financial Instruments.”

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On November 1, 2016, the Company issued $50 million of fixed-to-floating rate subordinated notes. The notes initially bear a fixed annual interest rate of 4.75%, with interest payable semiannually in arrears on May 1 and November 1 of each year, commencing May 1, 2017. Commencing November 1, 2021, the interest rate on the notes resets quarterly to the three-month LIBOR rate plus a spread of 338.7 basis points, payable quarterly in arrears. On or after November 1, 2021, the Company will have the option to redeem the notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the subordinated notes to be redeemed plus accrued interest, subject to applicable regulatory approval. The Company’s obligation to make payments of principal and interest on the notes is subordinate and junior in right of payment to all of its senior debt. Current regulatory guidance allows for this subordinated debt to be treated as tier 2 regulatory capital for the first five years of its term, subject to certain limitations, and then phased out of tier 2 capital pro rata over the next five years.

On May 21, 2020, EFSC issued $63.3 million of 5.75% fixed-to-floating rate subordinated notes due in 2030 in a public offering (the “2030 Notes”). From and including the date of issuance to, but excluding, June 1, 2025, the 2030 Notes will bear interest at a rate equal to 5.75% per annum, payable semiannually in arrears on each June 1 and December 1. From and including June 1, 2025 to, but excluding, the maturity date or the date of earlier redemption, the 2030 Notes will bear interest at a floating rate per annum equal to a benchmark rate (which is expected to be three-month term SOFR (as defined in the Indenture, dated May 21, 2020, between EFSC and U.S. Bank National Association, as trustee, and subsequent First Supplemental Indenture)), plus 566.0 basis points, payable quarterly in arrears on March 1, June 1, September 1 and December 1 of each year, commencing on September 1, 2025. Notwithstanding the foregoing, in the event that the benchmark rate is less than zero, then the benchmark rate shall be deemed to be zero.

NOTE 12 - FEDERAL HOME LOAN BANK ADVANCES

FHLB advances are collateralized by 1-4 family residential real estate loans, business loans, and certain commercial real estate loans. At December 31, 2020 and 2019, the carrying value of the loans pledged to the FHLB of Des Moines was $1.4 billion and $1.6 billion, respectively. The secured line of credit had availability of approximately $739.1 million at December 31, 2020.

The following table summarizes the type, maturity, and rate of the Company’s FHLB advances at December 31:

		2020				2019
($ in thousands)	Term	Outstanding Balance		Weighted Rate		Outstanding Balance		Weighted Rate
Non-amortizing fixed advance	Less than 1 year	$	—	—	%	$	170,000	1.73	%
Non-amortizing fixed advance	Greater than 1 year	50,000		1.56	%	52,406		1.62	%
Total FHLB advances		$	50,000	1.56	%	$	222,406	1.70	%

In August 2019, the Company entered into agreements totaling $50 million for convertible advances with a weighted average rate of 1.56% that mature in 2024 and are currently puttable by the FHLB.

At December 31, 2020, the Company used $6.0 million of collateral value to secure confirming letters of credit for public unit deposits and industrial development bonds.

NOTE 13 - OTHER BORROWINGS AND NOTES PAYABLE

Securities Sold Under Agreement to Repurchase

The Company enters into sales of securities under agreements to repurchase. The agreements are transacted with deposit customers and are utilized as an overnight investment product. The amounts received under these agreements represent short-term borrowings and are reflected as a liability in the consolidated balance sheets. The securities underlying these agreements are included in investment securities in the Consolidated Balance Sheets. The Company has no control over the market value of the securities, which fluctuates due to market conditions.

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However, the Company is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase agreement price. The Company manages this risk by maintaining an unpledged securities portfolio that it believes is sufficient to cover a decline in the market value of the securities sold under agreements to repurchase.

A summary of securities sold under agreements to repurchase is as follows:

	December 31,
($ in thousands)	2020			2019
Securities sold under agreement to repurchase	$	271,081		$	230,886
Average balance during the year	206,338			169,179
Maximum balance outstanding at any month-end	271,081			230,886
Average interest rate during the year	0.23		%	0.69		%
Average interest rate at December 31	0.07		%	0.91		%

Federal Reserve Line

The Bank also has a line with the Federal Reserve Bank of St. Louis which provides additional liquidity to the Company. As of December 31, 2020, $0.9 billion was available under this line. This line is secured by a pledge of certain eligible loans aggregating $1.1 billion. There were no amounts drawn on the Federal Reserve line of credit as of December 31, 2020.

Federal Reserve PPPLF

The Company acquired $86.1 million of Federal Reserve PPPLF funds from the Seacoast acquisition which were subsequently paid off in November 2020.

Revolving Credit Line

In February 2016, the Company entered into a senior unsecured revolving credit agreement (the “Revolving Agreement”) with another bank. The Revolving Agreement has a one-year term, maturing on February 22, 2021. It is in process of renewal and allows for borrowings up to $25 million. The interest rate is the one-month LIBOR plus 125 basis points. The proceeds can be used for general corporate purposes. The Revolving Agreement is subject to ongoing compliance with a number of customary affirmative and negative covenants as well as specified financial covenants. 

A summary of the amounts drawn on the Revolving Agreement is as follows:

	December 31,
($ in thousands)	2019
Outstanding balance	$	—
Average balance during the year	323
Maximum balance outstanding at any month-end	2,000
Weighted average interest rate during the year	4.61		%
Average interest rate at December 31	—

The revolving credit line was not accessed in 2020.

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Term Loan

In February 2019, the Company entered into a five year, $40.0 million unsecured term loan agreement (the “Term Loan”) with another bank with the proceeds primarily used to fund the company’s cash portion of the acquisition of Trinity. The interest rate is the one-month LIBOR plus 125 basis points.

A summary of the Term Loan is as follows:

	December 31,
($ in thousands)	2020			2019
Term Loan	$	30,000		$	34,286
Average balance during the year	32,123			30,810
Maximum balance outstanding at any month-end	34,286			40,000
Weighted average interest rate during the year	1.96		%	3.55		%
Average interest rate at December 31	1.44		%	3.00		%

NOTE 14 - LITIGATION AND OTHER CONTINGENCIES

The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Management believes there are no such legal proceedings pending or threatened against the Company or its subsidiaries in the ordinary course of business, directly, indirectly, or in the aggregate that, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.

NOTE 15 - REGULATORY CAPITAL

Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum ratios (set forth in the following table) of total, tier 1, and common equity tier 1 capital to risk-weighted assets, and of tier 1 capital to average assets. Management believes, as of December 31, 2020 and 2019, that the Company met all capital adequacy requirements to which it is subject.

As of December 31, 2020 and 2019, the Bank was categorized as “well-capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized” the Bank must maintain minimum total risk-based capital, tier 1 risk-based capital, common equity tier 1 risk-based capital, and tier 1 leverage ratios as set forth in the table. In addition, the Company must maintain an additional CCB above the regulatory minimum ratio requirements. The CCB is designed to insulate banks from periods of stress and impose constraints on dividends, share repurchases and discretionary bonus payments when capital levels fall below prescribed levels.

The capital ratios are presented in the table below:

	December 31, 2020				December 31, 2019
	EFSC		Bank		EFSC		Bank		To Be Well-Capitalized		Minimum Ratio with CCB
Common Equity Tier 1 Capital to Risk Weighted Assets	10.9	%	12.5	%	9.9	%	11.7	%	6.5	%	7.0	%
Tier 1 Capital to Risk Weighted Assets	12.1	%	12.5	%	11.4	%	11.7	%	8.0	%	8.5	%
Total Capital to Risk Weighted Assets	14.9	%	13.7	%	12.9	%	12.4	%	10.0	%	10.5	%
Leverage Ratio (Tier 1 Capital to Average Assets)	10.0	%	10.3	%	10.1	%	10.3	%	5.0	%	4.0	%

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NOTE 16 - SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS

Shareholders’ Equity

Common Stock

At December 31, 2020 and 2019, the Company has reserved the following shares of its authorized but unissued common stock for possible future issuance in connection with the following:

	December 31, 2020	December 31, 2019
Outstanding performance units (maximum issuance)	125,176	73,172
Outstanding RSU’s	157,428	117,369
Outstanding options and appreciation rights	—	28,300
2018 Stock Incentive Plan	339,691	521,573
Non-Management Director Plan	86,616	96,031
2018 Employee Stock Purchase Plan	635,890	694,085
Total	1,344,801	1,530,530

Common Stock Repurchase Plan

In May 2015, the Company’s board of directors authorized the repurchase of up to two million shares of the Company’s common stock. The repurchases may be made in open market or privately negotiated transactions and the stock repurchase program will remain in effect until fully utilized or until modified, superseded or terminated. At December 31, 2020, there were 95,907 shares available for repurchase under the plan.

Preferred Stock

The Company has 5,000,000 shares of authorized preferred stock with a par value of $0.01. The Board of Directors has the right to set for each series of preferred stock, subject to the laws of the State of Delaware, the dividend rate, conversion and redemption terms, voting rights and liquidation preferences, among others. At December 31, 2020 and 2019 there were no shares of preferred stock outstanding.

Dividends

The Company’s ability to pay dividends to its shareholders is generally dependent upon the payment of dividends by the Bank to the parent company. The Bank cannot pay dividends to the extent it would be deemed undercapitalized by the FDIC after making such dividend.

Dividends on the Company’s capital stock are prohibited under the terms of the junior subordinated debenture agreements, see “Note 11 - Subordinated Debentures,” if the Company is in continuous default on its payment obligations to the capital trusts, has elected to defer interest payments on the debentures or extends the interest payment period. At December 31, 2020, the Company was not in default on any of the junior subordinated debenture issuances.

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Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in accumulated other comprehensive income (loss) after-tax by component:

($ in thousands)	Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities		Unamortized Gain (Loss) on Held-to-Maturity Securities		Net Unrealized Loss on Cash Flow Hedges		Total
Balance, December 31, 2017	$	(3,622)	$	(196)	$	—	$	(3,818)
Net change	(4,633)		3		—		(4,630)
Adjustment for change in accounting policies	(792)		(42)		—		(834)
Balance, December 31, 2018	(9,047)		(235)		—		(9,282)
Net change	29,226		(33)		(2,162)		27,031
Transfer from available-for-sale to held-to-maturity	(5,202)		5,202		—		—
Balance, December 31, 2019	14,977		4,934		(2,162)		17,749
Net change	23,627		(1,910)		(2,346)		19,371
Transfer from available-for-sale to held-to-maturity	(16,284)		16,284		—		—
Balance, December 31, 2020	$	22,320	$	19,308	$	(4,508)	$	37,120

The following table presents the pre-tax and after-tax changes in the components of other comprehensive income:

	2020						2019						2018
($ in thousands)	Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax
Change in unrealized gain (loss) on available-for-sale debt securities	$	31,798	$	7,854	$	23,944	$	38,764	$	9,575	$	29,189	$	(6,143)	$	(1,517)	$	(4,626)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities(a)	(421)		(104)		(317)		49		12		37		(9)		(2)		(7)
Reclassification of (gain) loss on held-to-maturity securities(b)	(2,537)		(627)		(1,910)		(44)		(11)		(33)		4		1		3
Change in unrealized loss on cash flow hedges arising during the period(b)	(7,898)		(1,951)		(5,947)		(3,004)		(742)		(2,262)		—		—		—
Reclassification of loss on cash flow hedges(b)	4,782		1,181		3,601		133		33		100		—		—		—
Total other comprehensive income (loss)	$	25,724	$	6,353	$	19,371	$	35,898	$	8,867	$	27,031	$	(6,148)	$	(1,518)	$	(4,630)

(a)The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations.

(b)The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations, except for a $3.2 million termination fee in 2020 recognized in noninterest expense.

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Compensation Plans

The Company has adopted share-based compensation plans to reward and provide long-term incentive for directors and key employees of the Company including its subsidiaries. These plans provide for the granting of stock, stock options, stock-settled stock appreciation rights (“SSARs”), and restricted stock units (“RSUs”), and may contain performance terms as designated by the Company’s Board of Directors upon the recommendation of the Compensation Committee of the Board. The Company uses authorized and unissued shares to satisfy share award exercises.

The total excess income tax benefit for share-based compensation arrangements was $0.2 million, $0.5 million, and $1.6 million for the years ended December 31, 2020, 2019, and 2018, respectively. At December 31, 2020, there was $5.0 million of total unrecognized compensation cost related to unvested share-based compensation awards. The cost is expected to be recognized over a weighted-average period of 2 years.

The following table summarizes share-based compensation expense:

($ in thousands)	2020		2019		2018
Performance stock units	$	1,097	$	1,699	$	2,067
Restricted stock units	2,613		1,969		1,211
Employee stock purchase plan	468		364		174
Total share-based compensation expense	$	4,178	$	4,032	$	3,452

Performance Units

The Company has entered into long-term incentive agreements with certain key employees. These awards are conditioned on certain performance criteria and market criteria measured against a group of peer banks over a three-year period for each grant. The awards contain minimum (threshold), target, and maximum (exceptional) performance levels. In the event of a change in control, as defined in the plan, the awards will vest at a minimum of the target level. The amount of the awards is determined at the end of the three year vesting and performance period. In January 2021, the Company awarded 23,251 shares to employees upon completion of the 2018-2020 performance cycle. In January 2020, the Company awarded 62,649 shares to employees upon completion of the 2017-2019 performance cycle. In January 2019, the Company awarded 99,308 shares to employees upon completion of the 2016-2018 performance cycle.

Information related to the outstanding grants at December 31, 2020 is shown below:

($ in thousands)	2019 - 2021 Cycle		2020 - 2022 Cycle
Shares issuable at target	20,860		26,002
Maximum shares issuable	41,720		52,004
Unrecognized compensation cost	$	366	$	704
Weighted average grant date fair value	47.46		38.09

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Restricted Stock Units

The Company awards nonvested stock, in the form of RSUs to employees. RSUs generally are subject to continued employment and generally vest ratably over two to five years. Shares issued to the Bank’s directors for compensation are not subject to vesting requirements. Vesting is accelerated upon a change in control or the employee meeting certain retirement criteria. RSUs do not carry voting or dividend rights until vested. Sales of the units are restricted prior to vesting. Various information related to the RSUs is shown below.

($ in thousands)	2020		2019		2018
Total fair value at vesting date	$	1,702	$	1,067	$	1,544
Total unrecognized compensation cost for nonvested stock units	3,899		3,417		2,175
Expected years to recognize unearned compensation	1.9 years		1.9 years		2.0 years

A summary of the status of the Company’s RSU awards as of December 31, 2020 and changes during the year then ended is presented below

	Shares	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	117,369	$	45.86
Granted	88,759	39.63
Vested	(44,351)	45.68
Forfeited	(4,349)	44.24
Outstanding at December 31, 2020	157,428	$	42.44

Employee Stock Options and Stock-settled Stock Appreciation Rights

In determining compensation cost for stock options and SSARs, the Black-Scholes option-pricing model is used to estimate the fair value on date of grant. There were no grants of employee stock options or SSARs during the years ended December 31, 2020, 2019, or 2018.

Stock options have been granted to key employees with exercise prices equal to the market price of the Company’s common stock at the date of grant and 10-year contractual terms. Stock options have a vesting schedule of three to five years. The SSARs are subject to continued employment, have a 10-year contractual term and vest ratably over five years. Neither stock options nor SSARs carry voting or dividend rights until exercised. At December 31, 2020, there was no remaining unrecognized compensation expense related to stock options and SSARs and all outstanding awards are vested. Various information related to the stock options and SSARs is shown below.

($ in thousands)	2020		2019		2018
Intrinsic value of option/SSAR exercises on date of exercise	$	597	$	407	$	2,469

Following is a summary of the SSAR activity for 2020.

($ in thousands, except per share data)	Shares	Weighted Average Exercise Price
Outstanding at December 31, 2019	28,300	$	10.14
Exercised	(28,300)	10.14
Outstanding at December 31, 2020	—	N/A

Employee Stock Purchase Plan

The Company adopted an Employee Stock Purchase Plan (“ESPP”) in 2018 to provide its eligible employees with an opportunity to purchase common stock through accumulated contributions. The ESPP provides for shares to be

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purchased at 85% of the lesser of the stock price at the enrollment date or the exercise date. The maximum number of shares of common stock available for sale under the ESPP is 750,000. In 2020, 2019, and 2018, employees purchased 58,195, 41,116, and 14,799 shares, respectively.

Stock Plan for Non-Management Directors

The Company has adopted a Stock Plan for Non-Management Directors, which provides for issuing up to 200,000 shares of common stock to non-management directors as compensation in lieu of cash. At December 31, 2020, there were 80,130 shares of stock available for grant under the Stock Plan for Non-Management Directors, exclusive of 6,486 shares to be issued upon deferral release.

Various information related to the Director Plan is shown below.

	2020		2019		2018
Shares granted	15,901		11,382		11,750
Weighted average fair value	$	30.28	$	41.63	$	50.74

401(k) Plan

The Company has a 401(k) savings plan which covers substantially all full-time employees over the age of 21 and matches 100% of the first 6% of employee contributions. The amount charged to expense for the Company’s contributions to the plan was $3.8 million, $3.2 million and $2.8 million for 2020, 2019, and 2018, respectively.

Deferred Compensation Plan

The Company’s Deferred Compensation Plan permits certain executives to participate and defer up to 25% of their base salary and/or up to 100% of their eligible bonus for a plan year. Participants make an irrevocable election when they elect to participate for a plan year to receive the vested account balance following their retirement date, or at a future date not less than five years after the beginning of the plan year. At December 31, 2020, the Company had assets and liabilities of $3.6 million and $4.9 million, respectively, related to the Deferred Compensation Plan.

NOTE 17 - INCOME TAXES

The components of income tax expense for the years ended December 31, are as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Current:
Federal	$	25,132	$	15,470	$	9,621
State and local	5,009		2,027		2,432
Total current	30,141		17,497		12,053
Deferred:
Federal	(10,651)		4,262		2,812
State and local	(1,927)		1,538		495
Total deferred	(12,578)		5,800		3,307
Total income tax expense	$	17,563	$	23,297	$	15,360

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A reconciliation of expected income tax expense, computed by applying the statutory federal income tax rate in 2020, 2019, and 2018 to income before income taxes and the amounts reflected in the consolidated statements of operations is as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income tax expense at statutory rate	$	19,309	$	24,368	$	21,961
Increase (reduction) in income tax resulting from:
Tax-exempt interest income, net	(2,010)		(962)		(506)
State and local income taxes, net	3,254		2,816		2,423
Bank-owned life insurance, net	(778)		(628)		(452)
Non-deductible expenses	637		749		294
Tax benefit (expense) of LIHTC investments, net	(444)		(278)		(50)
Excess tax benefits	(175)		(526)		(1,631)
Federal tax credits	(1,327)		(913)		(4,627)
Subsidiary dividend timing election	—		—		(2,728)
Non-taxable donation to charitable foundation	—		(420)		—
Other, net	(903)		(909)		676
Total income tax expense	$	17,563	$	23,297	$	15,360

The net amount recognized as a component of tax expense for tax credits, other tax benefits, and amortization from low-income housing tax credit (“LIHTC”) investments recognized per the table above was $0.4 million for the year ended December 31, 2020. The net amount recognized as a benefit component of income tax expense per the table above was $0.3 million for the year ended December 31, 2019, and $0.1 million for the year ended December 31, 2018. As of December 31, 2020 and 2019, the carrying value of the investments related to low-income housing tax credits was $4.2 million and $4.0 million, respectively. No impairment losses have been recognized from forfeiture or ineligibility of tax credits or other circumstances during the life of any of the investments.

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A net deferred income tax asset of $29.8 million and $14.4 million is included in other assets in the consolidated balance sheets at December 31, 2020 and 2019, respectively. The tax effect of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities is as follows:

	Year ended December 31,
($ in thousands)	2020		2019
Deferred tax assets:
Allowance for loan losses	$	34,031	$	10,692
Acquired loans	—		9,722
Loans held-for-sale	8,058		—
Other real estate	896		657
Deferred compensation	2,585		2,462
Accrued compensation	5,391		1,607
Net operating losses and tax credits	6,460		7,066
Other deferred tax assets	3,086		791
Total deferred tax assets	60,507		32,997
Deferred tax liabilities:
Acquired loans	3,413		—
Unrealized gains on securities	12,189		5,847
Intangible assets	7,800		7,432
Other deferred tax liabilities	4,369		2,407
Total deferred tax liabilities	27,771		15,686
Net deferred tax asset before valuation allowance	32,736		17,311
Less: valuation allowance	2,932		2,932
Net deferred tax asset	$	29,804	$	14,379

As part of the Trinity Capital Corporation acquisition in 2019, the company acquired net operating loss, tax credit, and capital loss deferred tax assets. Net operating losses originated in the years 2012, 2014-2017, and 2019 and will expire in the years between 2032-2037. Tax credit carryforwards originated in years 2010-2015 and will expire in the years between 2030-3035. Capital losses originated in 2015, 2016, & 2018 and will expire in the years between 2021-2023.

A valuation allowance is provided on deferred tax assets when it is more likely than not that some portion of the assets will not be realized. In 2019, as part of the Trinity Capital Corporation acquisition, the company acquired net operating loss, tax credit, and capital loss deferred tax assets. The company determined that it was more likely than not that some of the assets would not be realized. As such, the company recorded a $2.9 million valuation allowance as of December 31, 2020 and 2019.

The Company and its subsidiaries file income tax returns in the federal jurisdiction and in twenty-nine states. The Company is no longer subject to federal, state or local income tax audits by tax authorities for years before 2017, with the exception of 2016 being an open year by one state taxing authority. Net operating losses generated prior to 2016 that are utilized going forward would still be subject to examination.

As of December 31, 2020, the gross amount of unrecognized tax benefits was $3.2 million and the total amount of net unrecognized tax benefits that would impact the effective tax rate, if recognized, was $3.1 million. As of December 31, 2019 and 2018, the total amount of the net unrecognized tax benefits that would impact the effective tax rate, if recognized, was $1.1 million and $0.9 million, respectively. The Company believes it is reasonably possible that the gross amount of unrecognized benefits will be reduced by approximately $0.3 million as a result of a lapse of statute of limitations in the next 12 months.

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The Company recognizes interest and penalties related to uncertain tax positions in income tax expense and classifies such interest and penalties in the liability for unrecognized tax benefits. The amount accrued for interest and penalties was $0.9 million as of December 31, 2020, and was not significant for 2019 and 2018.

The activity in the gross liability for unrecognized tax benefits was as follows:

($ in thousands)	2020		2019		2018
Balance at beginning of year	$	1,497	$	1,301	$	1,244
Additions based on tax positions related to the current year	395		401		367
Additions for tax positions of prior years	1,556		62		50
Settlements or lapse of statute of limitations	(291)		(267)		(360)
Balance at end of year	$	3,157	$	1,497	$	1,301

NOTE 18 - COMMITMENTS

Long-term Lease Commitments

See “Note 6 – Leases” in this report for information regarding the Company’s long-term lease commitments.

Off-balance-Sheet Commitments

The Company issues financial instruments in the normal course of the business of meeting the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets.

The Company’s extent of involvement and maximum potential exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is not more than the contractual amount of these instruments.

The Company uses the same credit policies in making commitments and conditional obligations as it does for financial instruments included on its consolidated balance sheets.

The contractual amounts of off-balance-sheet financial instruments as of December 31, 2020, and December 31, 2019, are as follows: 

(in thousands)	December 31, 2020		December 31, 2019
Commitments to extend credit	$	1,946,068	$	1,469,413
Letters of credit	50,971		47,969
State tax credits	24,473		28,035
Low-income housing tax credits	—		704
Limited partnership commitments	23,400		20,829

There was an insignificant amount of unadvanced commitments on impaired loans at December 31, 2020 and December 31, 2019. Other liabilities include approximately $5.7 million for estimated losses attributable to unadvanced commitments at December 31, 2020.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments usually have fixed expiration dates or other termination clauses, may have significant usage restrictions, and may require payment of a fee. Of the total commitments to extend credit at December 31, 2020, and December 31, 2019, $160.6 million and $144.8 million, respectively, represent fixed rate loan commitments. Since certain of the commitments may expire without being drawn upon or may be revoked, the total commitment amounts do not necessarily represent future cash obligations. The Company evaluates each

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customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. Collateral held varies, but may include accounts receivable, inventory, premises and equipment, and real estate.

Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are issued to support contractual obligations of the Company’s customers. The credit risk involved in issuing letters of credit is essentially the same as the risk involved in extending loans to customers. The approximate remaining term of letters of credit range from 1 month to 4 years at December 31, 2020.

The Company also has off-balance sheet commitments for purchases of state tax credits, low-income housing tax credits, and commitments for various capital raises for SBICs.

NOTE 19 - FAIR VALUE MEASUREMENTS

The fair value of an asset or liability is the exchange price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820, Fair Value Measurements and Disclosures, establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

•Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

•Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.

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Fair value on a recurring basis

The following table summarizes financial instruments measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value.

	December 31, 2020
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	15,161	$	—	$	15,161
Obligations of states and political subdivisions	—		344,232		—		344,232
Residential mortgage-backed securities	—		526,572		—		526,572
Corporate debt securities	—		14,998		—		14,998
U.S. Treasury Bills	—		11,466		—		11,466
Total securities available-for-sale	—		912,429		—		912,429
Derivative financial instruments	—		28,703		—		28,703
Total assets	$	—	$	941,132	$	—	$	941,132
Liabilities
Derivative financial instruments	$	—	$	34,967	$	—	$	34,967
Total liabilities	$	—	$	34,967	$	—	$	34,967

	December 31, 2019
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	10,046	$	—	$	10,046
Obligations of states and political subdivisions	—		213,024		—		213,024
Residential mortgage-backed securities	—		902,021		—		902,021
U.S. Treasury Bills	—		10,226		—		10,226
Total securities available-for-sale	—		1,135,317		—		1,135,317
Other investments	—		—		—		—
Derivative financial instruments	—		11,055		—		11,055
Total assets	$	—	$	1,146,372	$	—	$	1,146,372
Liabilities
Derivative financial instruments	$	—	$	14,747	$	—	$	14,747
Total liabilities	$	—	$	14,747	$	—	$	14,747

•Securities available-for-sale. Securities classified as available-for-sale are reported at fair value utilizing Level 2 and Level 3 inputs. Fair values for Level 2 securities are based upon dealer quotes, market spreads, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions at the security level. Changes in fair value are recognized through accumulated other comprehensive income.

•Derivatives. Derivatives are reported at fair value utilizing Level 2 inputs. The Company obtains counterparty quotations to value its interest rate swaps and caps. In addition, the Company validates the counterparty quotations with third party valuation sources. Derivatives with negative fair values are

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included in Other liabilities in the consolidated balance sheets. Derivatives with positive fair value are included in Other assets in the consolidated balance sheets. Changes in the fair value of client-related derivative instruments are recognized through net income. For the years ended December 31, 2020 and 2019, the gains and losses offset each other due to the Company’s hedging of the client swaps with other bank counterparties.

Fair value on a non-recurring basis

Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).

•Impaired loans. Impaired loans are included as Portfolio loans on the Company’s consolidated balance sheets with amounts specifically reserved for credit impairment in the Allowance for loan losses. On a quarterly basis, fair value adjustments are recorded on impaired loans to account for (1) partial write-downs that are based on the current appraised or market-quoted value of the underlying collateral or (2) the full charge-off of the loan carrying value. In some cases, the properties for which market quotes or appraised values have been obtained are located in areas where comparable sales data is limited, outdated, or unavailable. In addition, the Company may adjust the valuations based on other relevant market conditions or information. Accordingly, fair value estimates, including those obtained from real estate brokers or other third-party consultants, for collateral-dependent impaired loans are classified in Level 3 of the valuation hierarchy.

•Other Real Estate. These assets are reported at the lower of the loan carrying amount at foreclosure or fair value. Fair value is based on third party appraisals of each property and the Company’s judgment of other relevant market conditions. These are considered Level 3 inputs.

The following table presents financial instruments and non-financial assets measured at fair value on a non-recurring basis as of December 31, 2020 and 2019. 

	December 31, 2020
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2020
Impaired loans	$	1,247	$	—	$	—	$	1,247	$	4,486
Other real estate	3,600		—		—		3,600		1,000
Total	$	4,847	$	—	$	—	$	4,847	$	5,486

	December 31, 2019
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2019
Impaired loans	$	2,506	$	—	$	—	$	2,506	$	2,687
Total	$	7,450	$	—	$	—	$	7,450	$	2,687

(1) The amounts represent balances measured at fair value during the period and still held as of the reporting date.

Impaired loans are reported at the fair value of the underlying collateral. Fair values for impaired loans are obtained from current appraisals by qualified licensed appraisers or independent valuation specialists. Other real estate owned is adjusted to fair value upon foreclosure of the underlying loan. Subsequently, foreclosed assets are carried

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at the lower of carrying value or fair value less costs to sell. Fair value of other real estate is based upon the current appraised values of the properties as determined by qualified licensed appraisers and the Company’s judgment of other relevant market conditions.

Carrying amount and fair value at December 31, 2020 and 2019

Following is a summary of the carrying amounts and fair values of the Company’s financial instruments on the consolidated balance sheets at December 31, 2020 and 2019. This summary excludes certain financial assets and liabilities for which carrying value approximates fair value and financial instruments that are recorded at fair value on a recurring basis disclosed above. Financial instruments for which carrying values approximate fair value include cash and due from banks, federal funds sold, interest bearing deposits, accrued interest receivable/payable, demand, savings and money market deposits.

	December 31, 2020					December 31, 2019
($ in thousands)	Carrying Amount		Estimated fair value		Level	Carrying Amount		Estimated fair value		Level
Balance sheet assets
Securities held-to-maturity	$	487,610	$	501,523	Level 2	$	181,166	$	181,939	Level 2
Other investments	48,764		48,764		Level 2	38,044		38,044		Level 2
Loans held-for-sale	13,564		13,564		Level 2	5,570		5,570		Level 2
Loans, net	7,088,264		7,067,562		Level 3	5,271,049		5,205,651		Level 3
State tax credits, held-for-sale	36,853		39,925		Level 3	36,802		39,046		Level 3
Balance sheet liabilities
Certificates of deposit	$	550,095	$	553,946	Level 3	$	826,447	$	825,203	Level 3
Subordinated debentures and notes	203,637		192,889		Level 2	141,258		130,985		Level 2
FHLB advances	50,000		51,871		Level 2	222,406		221,402		Level 2
Other borrowings	301,081		301,081		Level 2	265,172		265,172		Level 2

Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates are subjective in nature and involve uncertainties and matters of significant judgment, and therefore, cannot be determined with precision. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Decreasing real estate values, illiquid credit markets, volatile equity markets, and declines in consumer spending have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment will be reflected in the financial statement in future periods. In addition, these estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Fair value estimates are based on existing on-balance and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in many of the estimates.

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NOTE 20 - PARENT COMPANY ONLY CONDENSED FINANCIAL STATEMENTS

Condensed Balance Sheets

	December 31,
($ in thousands)	2020		2019
Assets
Cash	$	75,475	$	21,955
Investment in Bank	1,200,689		977,959
Investment in nonbank subsidiaries	9,778		9,795
Other assets	35,108		37,905
Total assets	$	1,321,050	$	1,047,614
Liabilities and Shareholders’ Equity
Subordinated debentures and notes	$	203,637	$	141,258
Notes payable	30,000		34,286
Accounts payable and other liabilities	8,439		4,885
Shareholders' equity	1,078,974		867,185
Total liabilities and shareholders' equity	$	1,321,050	$	1,047,614

Condensed Statements of Operations

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income:
Dividends from Bank	$	37,000	$	60,000	$	30,000
Dividends from nonbank subsidiaries	1,400		1,500		1,200
Other	483		663		1,784
Total income	38,883		62,163		32,984
Expenses:
Interest expense-subordinated debentures and notes	9,885		7,507		5,798
Interest expense-notes payable	705		1,182		62
Other expenses	6,946		6,936		7,087
Total expenses	17,536		15,625		12,947
Income before taxes and equity in undistributed earnings of subsidiaries	21,347		46,538		20,037
Income tax benefit	3,448		3,478		3,482
Net income before equity in undistributed earnings of subsidiaries	24,795		50,016		23,519
Equity in undistributed earnings of subsidiaries	49,589		42,723		65,698
Net income and comprehensive income	$	74,384	$	92,739	$	89,217

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Condensed Statements of Cash Flows

	Year ended December 31,
($ in thousands)	2020		2019		2018
Cash flows from operating activities:
Net income	$	74,384	$	92,739	$	89,217
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation	4,178		4,032		3,452
Net income of subsidiaries	(87,989)		(104,223)		(94,898)
Dividends from subsidiaries	38,400		61,500		31,200
Other, net	3,588		(1,063)		(953)
Net cash provided by operating activities	32,561		52,985		28,018
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(1,243)		(36,015)		—
Purchases of other investments	(1,166)		(2,634)		(2,729)
Proceeds from distributions on other investments	765		1,271		1,911
Net cash used in investing activities	(1,644)		(37,378)		(818)
Cash flows from financing activities:
Proceeds from issuance of subordinated notes	61,953		—		—
Proceeds from notes payable	—		1,000		2,000
Repayments of notes payable	—		(3,000)		—
Proceeds from issuance of long-term debt	—		40,000		—
Repayment of long-term debt	(4,286)		(5,714)		—
Cash dividends paid	(19,795)		(16,569)		(10,845)
Payments for the repurchase of common stock	(15,347)		(15,526)		(19,387)
Payments for the issuance of equity instruments, net	78		(212)		(2,576)
Net cash provided by (used in) financing activities	22,603		(21)		(30,808)
Net increase (decrease) in cash and cash equivalents	53,520		15,586		(3,608)
Cash and cash equivalents, beginning of year	21,955		6,369		9,977
Cash and cash equivalents, end of year	$	75,475	$	21,955	$	6,369
Supplemental disclosures of cash flow information:
Noncash transactions:
Common shares issued in connection with acquisitions	$	167,035	$	171,885	$	—

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NOTE 21 - QUARTERLY CONDENSED FINANCIAL INFORMATION (Unaudited)

The following table presents unaudited quarterly financial information for the periods indicated:

	2020
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	84,113	$	70,787	$	73,191	$	76,688
Interest expense	6,667		7,433		7,358		13,320
Net interest income	77,446		63,354		65,833		63,368
Provision for credit losses	9,463		14,080		19,591		22,264
Net interest income after provision for loan losses	67,983		49,274		46,242		41,104
Noninterest income	18,506		12,629		9,960		13,408
Noninterest expense	51,050		39,524		37,912		38,673
Income before income tax expense	35,439		22,379		18,290		15,839
Income tax expense	6,508		4,428		3,656		2,971
Net income	$	28,931	$	17,951	$	14,634	$	12,868
Earnings per common share:
Basic	$	1.00	$	0.68	$	0.56	$	0.49
Diluted	1.00		0.68		0.56		0.48
	2019
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	77,238	$	81,078	$	79,201	$	67,617
Interest expense	15,625		18,032		17,486		15,274
Net interest income	61,613		63,046		61,715		52,343
Provision for credit losses	1,341		1,833		1,722		1,476
Net interest income after provision for loan losses	60,272		61,213		59,993		50,867
Noninterest income	14,418		13,564		11,964		9,230
Noninterest expense	38,354		38,239		49,054		39,838
Income before income tax expense	36,336		36,538		22,903		20,259
Income tax expense	7,246		7,469		4,479		4,103
Net income	$	29,090	$	29,069	$	18,424	$	16,156
Earnings per common share:
Basic	$	1.10	$	1.09	$	0.69	$	0.68
Diluted	1.09		1.08		0.68		0.67

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ITEM 9: CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A: CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, evaluated the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, the “Act”) as of December 31, 2020. Based upon this evaluation, our Chief Executive Officer and our Chief Financial Officer have concluded that as of December 31, 2020, such disclosure controls and procedures were effective to ensure that information required to be disclosed by the Company in the reports it files or submits under the Act is accumulated and communicated to the Company’s management (including the Chief Executive Officer and Chief Financial Officer) to allow timely decisions regarding required disclosure, and is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Management’s Assessment of Internal Control Over Financial Reporting

Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) and 15(d)-15(f) under the Act). The Company’s internal control system is a process designed to provide reasonable assurance to the Company’s management and Board of Directors regarding the preparation and fair presentation of published financial statements.

As permitted, management excluded from its assessment the operations of Seacoast Commerce Banc Holdings, which was acquired on November 12, 2020. As described in Note 2 to the Consolidated Financial Statements, assets acquired and excluded from management's assessment of internal control over financial reporting comprised approximately 13% and 11% of consolidated total and net assets, respectively, at December 31, 2020. Operations of Seacoast Commerce Banc Holdings comprised approximately 3% of revenues, for the year ended December 31, 2020.

The Company’s internal control over financial reporting includes policies and procedures that pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect transactions and dispositions of assets; provide reasonable assurances that transactions are recorded as necessary to permit preparation of financial statements in accordance with accounting principles generally accepted in the United States of America, and that receipts and expenditures are being made only in accordance with authorizations of management and the directors of the Company; and provide reasonable assurance regarding prevention or untimely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the Company’s financial statements.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial reporting. Further, because of changes in conditions, the effectiveness of any system of internal control may vary over time. The design of any internal control system also factors in resource constraints and consideration for the benefit of the control relative to the cost of implementing the control. Because of these inherent limitations in any system of internal control, management cannot provide absolute assurance that all control issues and instances of fraud within the Company have been detected.

Management assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2020. In making this assessment, management used the criteria set forth by the Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Management has concluded that the Company maintained an effective system of internal control over financial reporting based on these criteria as of December 31, 2020.

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The Company’s independent registered public accounting firm, Deloitte & Touche LLP, who audited the consolidated financial statements, has issued an audit report on the Company’s internal control over financial reporting as of December 31, 2020, and it is included herein.

Changes in Internal Control Over Financial Reporting

There have been no changes in the Company’s internal control over financial reporting (as defined in Rule 13a-15(f) and 15d-15(f) under the Act) that occurred during the Company’s quarter ended December 31, 2020 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM 9B: OTHER INFORMATION

None.

PART III

ITEM 10: DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this item is incorporated herein by reference to the Board and Committee Information and Executive Officer sections of the Company’s Proxy Statement for its 2021 Annual Meeting of Shareholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

Governance:

The Company has adopted a Code of Ethics applicable to all of its directors and employees, including the principal executive officer, principal financial officer and principal accounting officer. A copy of the Code of Ethics is available on the Company’s website at www.enterprisebank.com.

ITEM 11: EXECUTIVE COMPENSATION

The information required by this item is incorporated herein by reference to the Executive Compensation section of the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

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ITEM 12: SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The following table provides information regarding the securities authorized for issuance under our equity compensation plans as of December 31, 2020. Additional information regarding these plans is included in “Item 8. Note 16 – Shareholders’ Equity and Compensation Plans” in this report.

EQUITY COMPENSATION PLAN INFORMATION

Plan Category	Number of securities to be issued upon exercise of outstanding options, warrants and rights (a)	Weighted-average exercise price of outstanding options, warrants and rights (b)	Number of securities remaining available for future issuance under equity compensation plans (c)
Equity compensation plans approved by security holders	289,090	NA	1,055,711
Equity compensation plans not approved by security holders	—	—	—
Total	289,090	NA	1,055,711

(a)  Includes the following:

•151,855 shares of common stock to be issued upon vesting of outstanding restricted stock units under the 2018 Stock Incentive Plan;

•125,176 shares of common stock to be issued upon vesting of outstanding performance units under the 2018 Stock Incentive Plan; and

•12,059 shares of common stock to be issued upon deferral release of common stock under the 2018 Stock Incentive Plan and the Non-Management Director Stock Plan.

(c)  Includes the following:

•339,691 shares of common stock available for issuance under the 2018 Stock Incentive Plan;

•80,130 shares of common stock available for issuance under the Non-Management Director Stock Plan; and

•635,890 shares of common stock available for issuance under the 2018 Employee Stock Purchase Plan.

Additional information required by this item is incorporated herein by reference to the Information Regarding Beneficial Ownership section of the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

ITEM 13: CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated herein by reference to the Related Person Transactions section of the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

ITEM 14: PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this item is incorporated by reference to the Fees Paid to Independent Registered Public Accounting Firm section of the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.

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PART IV

ITEM 15: EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

 (a)    1. Financial Statements

The consolidated financial statements of Enterprise Financial Services Corp and its subsidiaries and independent auditors’ reports are included in Part II, Item 8, of this Form 10-K.

    2. Financial Statement Schedules

All financial statement schedules have been omitted, as they are either inapplicable or included in the Notes to Consolidated Financial Statements.

    3. Exhibits

    No.        Description

2.1    Agreement and Plan of Merger, among Enterprise Financial Services Corp, Enterprise Bank & Trust, Trinity Capital Corporation and Los Alamos National Bank, dated November 1, 2018 (incorporated herein by reference to Exhibit 2.1 to Registrant’s Current Report on Form 8-K filed on November 2, 2018 (File No. 001-15373)).

2.2    Agreement and Plan of Merger, dated August 20, 2020 by and among Enterprise Financial Services Corp, Enterprise Bank & Trust, Seacoast Commerce Banc Holdings and Seacoast Commerce Bank (incorporated by reference to Exhibit 2.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on August 21, 2020 (File No. 001-15373)).

3.1    Certificate of Incorporation of Registrant, (incorporated herein by reference to Exhibit 3.1 of Registrant's Registration Statement on Form S-1 filed on December 16, 1996 (File No. 333-14737)).

3.2    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Exhibit 4.2 to Registrant's Registration Statement on Form S-8 filed on July 1, 1999 (File No. 333-82087)).

3.3    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Exhibit 3.1 to Registrant's Quarterly Report on Form 10-Q for the period ending September 30, 1999 (File No. 001-15373)).

3.4    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Exhibit 99.2 to Registrant's Current Report on Form 8-K filed on April 30, 2002 (File No. 001-15373)).

3.5    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Appendix A to Registrant's Proxy Statement on Form 14-A filed on November 20, 2008 (File No. 001-15373)).

3.6    Certificate of Designations of Registrant for Fixed Rate Cumulative Perpetual Preferred Stock, Series A, dated December 17, 2008 (incorporated herein by reference to Exhibit 3.1 to Registrant's Current Report on Form 8-K filed on December 23, 2008 (File No. 001-15373)).

3.7    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Exhibit 3.1 to the Registrant's Quarterly Report on Form 10-Q for the period ending June 30, 2014 (File No. 001-15373)).

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3.8    Amendment to the Certificate of Incorporation of Registrant (incorporated herein by reference to Exhibit 3.8 to Registrant’s Quarterly Report on Form 10-Q filed on July 26, 2019 (File No. 001-15373)).

3.9    Amended and Restated Bylaws of Registrant (incorporated herein by reference to Exhibit 3.1 to Registrant's Current Report on Form 8-K filed on June 12, 2015 (File No. 001-15373)).

4.1    Description of Registrant’s Securities (incorporated herein by reference to Exhibit 4.1 to Registrant's Annual Report on Form 10-K filed on February 22, 2020 (File No. 001-15373)).

4.2    Long-term borrowing instruments are omitted pursuant to Item 601(b)(4)(iii) of Regulation S-K. The Company undertakes to furnish copies of such instruments to the Securities and Exchange Commission upon request.

10.1.1*    Executive Employment Agreement by and between Enterprise Financial Services Corp and James B. Lally, dated May 2, 2017 (incorporated by reference to Exhibit 10.1.1 to the Current Report on Form 8-K of Registrant, filed with the Commission on June 6, 2017 (File No. 001-15373)).

10.1.2*    Executive Employment Agreement dated September 13, 2013 by and between Enterprise Financial Services Corp and Keene S. Turner (incorporated by reference herein to Exhibit 10.1 to Registrant’s Quarterly Report on Form 10-Q for the period ending September 30, 2013 (File No. 001-15373)), amended by that First Amendment of Executive Employment Agreement dated as of February 27, 2015 (incorporated herein by reference to Exhibit 10.1.7 to the Registrant’s Annual Report on Form 10-K filed on February 27, 2015 (File No. 001-15373)), and amended by that Second Amendment to Executive Employment Agreement dated as of October 29, 2015 (incorporated by reference to Exhibit 10.1.2 to the Registrant’s Quarterly Report on Form 10-Q for the period ending September 30, 2015 (File No. 001-15373)).

10.1.3*    Restricted Stock Unit Agreement dated as of December 7, 2018 by and between Registrant and Keene S. Turner (incorporated herein by reference to Exhibit 10.1.15 to Registrant’s Annual Report on Form 10-K for the year ended December 31, 2018 (File No. 001-15373)).

10.1.4*    Executive Employment Agreement dated effective January 1, 2005 by and between Enterprise Financial Services Corp and Scott R. Goodman, amended by that First Amendment of Executive Employment Agreement dated as of December 31, 2008 (incorporated herein by reference to Exhibit 10.1.5 to Registrant’s Annual Report on Form 10-K filed on March 15, 2013 (File 001-15373)), and amended by that Second Amendment of Executive Employment Agreement dated October 11, 2013 (incorporated herein by reference to Exhibit 10.1.5 to Registrant’s Annual Report on Form 10-K filed on March 17, 2014 (File 001-15373)).

10.1.5*    Amended and Restated Executive Employment Agreement dated as of October 24, 2019 by and between Enterprise Financial Services Corp and Douglas N. Bauche (incorporated herein by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q of the Registrant, filed with the Commission on October 25, 2019 (File No. 001-15373)).

10.1.6*    Executive Employment Agreement dated as of October 24, 2019 by and between Enterprise Financial Services Corp and Nicole M. Iannacone (incorporated herein by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q of the Registrant, filed with the Commission on October 25, 2019 (File No. 001-15373)).

10.1.7*    Executive Employment Agreement dated as of October 24, 2019 by and between Enterprise Financial Services Corp and Mark G. Ponder (incorporated herein by reference to Exhibit 10.3 to the Quarterly Report on Form 10-Q of the Registrant, filed with the Commission on October 25, 2019 (File No. 001-15373)).

10.1.8*    Enterprise Financial Services Corp Amended and Restated Deferred Compensation Plan I dated effective as of December 31, 2008 (incorporated by reference to Exhibit 10.9 to Registrant's Report on Form 10-K for the year ended December 31, 2008 (File No. 001-15373)).

123

10.1.9*    Enterprise Financial Services Corp, Stock Plan for Non-Management Directors (incorporated herein by reference to Registrant’s Proxy Statement on Schedule 14-A filed on March 7, 2006, as amended on Schedule 14A filed on April 23, 2012 (File No. 001-15373), and as amended on Schedule 14A filed on April 17, 2019 (File No. 001-15373)).

10.1.10*    Enterprise Financial Services Corp, Annual Incentive Plan (incorporated herein by reference to Appendix C to Registrant's Proxy Statement on Schedule 14A, filed on March 7, 2006 and as amended on Schedule 14A filed on April 23, 2012 (File No. 001-15373)).

10.1.11*    Enterprise Financial Services Corp. Amended and Restated 2018 Stock Incentive Plan (incorporated herein by reference to Appendix A to Registrant’s Proxy Statement on Schedule 14A, filed on March 14, 2018 (File No. 001-15373)).

10.1.12*    Enterprise Financial Services Corp. 2018 Employee Stock Purchase Plan (incorporated herein by reference to Appendix B to Registrant’s Proxy Statement on Schedule 14A, filed on March 14, 2018 (File No. 001-15373)).

10.1.13*    Form of Enterprise Financial Services Corp LTIP Grant Agreement, pursuant to Amended and Restated 2018 Stock Incentive Plan (incorporated herein by reference to Exhibit 10.1 to Registrant’s Quarterly Report on Form 10-Q for the period ended March 31, 2018 (File No. 001-15373)).    

10.1.14+    Form of Enterprise Financial Services Corp Stock Option Award Agreement, pursuant to Amended and Restated 2018 Stock Incentive Plan (filed herewith).

10.2    Form of Voting Agreements, dated November 1, 2018, between Enterprise Financial Services Corp and shareholders of Trinity Capital Corporation (incorporated herein by reference to Exhibit A to Exhibit 2.1 to Registrant’s Current Report on Form 8-K filed on November 2, 2018 (File No. 001-15373)).

10.3    Loan Agreement dated February 24, 2016 between US Bank National Association and Registrant (incorporated herein by reference to Exhibit 10.2 to the Registrant’s Report on Form 10-K for the year ended December 31, 2015 (File No. 001-15373)), amended by the First Amendment to Loan Agreement dated as of February 23, 2017 (incorporated herein by reference to Exhibit 10.2 to Registrant’s Report on Form 10-K for the year ended December 31, 2016 (File No. 001-15373)), amended by the Second Amendment to Loan agreement dated as of February 23, 2018 (incorporated herein by reference to Exhibit 10.2 to Registrant’s Report on Form 10-K for the year ended December 31, 2017 (File No. 001-15373)),amended by the Third Amendment to Loan agreement dated as of February 22, 2019 (incorporated herein by reference to Exhibit 10.3 to the Registrant’s Report on Form 10-K for the year ended December 31, 2018 (File No. 001-15373)), and amended by the Fourth Amendment to Loan agreement dated as of February 22, 2020, (incorporated herein by reference to Exhibit 10.3 to Registrant's Annual Report on Form 10-K filed on February 22, 2020 (File No. 001-15373)).

21.1+    Subsidiaries of Registrant.

23.1+    Consent of Deloitte & Touche LLP.

24.1+    Power of Attorney.

31.1+    Chief Executive Officer’s Certification required by Rule 13(a)-14(a).

31.2+    Chief Financial Officer’s Certification required by Rule 13(a)-14(a).

32.1+    Chief Executive Officer Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to section § 906 of the Sarbanes-Oxley Act of 2002.

32.2+    Chief Financial Officer Certification pursuant to 18 U.S.C. § 1350, as adopted pursuant to section § 906 of the Sarbanes-Oxley Act of 2002.

124

101+    Pursuant to Rule 405 of Regulation S-T, the following financial information from the Company’s Annual Report on Form 10-K for the period ended December 31, 2020, is formatted in Inline XBRL interactive data files: (i) Consolidated Balance Sheet at December 31, 2020 and December 31, 2019; (ii) Consolidated Statement of Income for the years ended December 31, 2020, 2019, and 2018; (iii) Consolidated Statement of Comprehensive Income for the years ended December 31, 2020, 2019, and 2018; (iv) Consolidated Statement of Changes in Equity for the years ended December 31, 2020, 2019, and 2018; (v) Consolidated Statement of Cash Flows for the years ended December 31, 2020, 2019, and 2018; and (vi) Notes to Financial Statements.

104+    The cover page of Enterprise Financial Services Corp’s Annual Report on Form 10-K for the year ended December 31, 2020, formatted in Inline XBRL (contained in Exhibit 101).

* Management contract or compensatory plan or arrangement.

+ Filed herewith

Note: In accordance with Item 601(b)(4)(iii) of Regulation S-K, Registrant hereby agrees to furnish to the SEC, upon its request, a copy of any instrument that defines the rights of holders of each issue of long-term debt of Registrant and its consolidated subsidiaries for which consolidated and unconsolidated financial statements are required to be filed and that authorizes a total amount of securities not in excess of ten percent of the total assets of the Registrant on a consolidated basis.

(b) The exhibits not incorporated by reference herein are filed herewith.

(c) The financial statement schedules are either included in the Notes to Consolidated Financial Statements or omitted if inapplicable.

ITEM 16: FORM 10-K SUMMARY

None.

125

SIGNATURES

    Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on February 19, 2021.

ENTERPRISE FINANCIAL SERVICES CORP

/s/ James B. Lally

James B. Lally

Chief Executive Officer and Director

126

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the registrant and in the capacities indicated on February 19, 2021.

Signatures	Title
/s/ James B. Lally	Chief Executive Officer and Director (Principal Executive Officer)
James B. Lally
/s/ Keene S. Turner	Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Keene S. Turner
/s/ Troy R. Dumlao	Chief Accounting Officer (Principal Accounting Officer)
Troy R. Dumlao
/s/ John S. Eulich*
John S. Eulich	Chairman of the Board of Directors
/s/ Michael A. DeCola*
Michael A. DeCola	Director
/s/ James F. Deutsch*
James F. Deutsch	Director
/s/ Robert E. Guest, Jr.*
Robert E. Guest, Jr.	Director
/s/ James M. Havel*
James M. Havel	Director
/s/ Judith S. Heeter*
Judith S. Heeter	Director
/s/ Michael R. Holmes*
Michael R. Holmes	Director
/s/ Nevada A. Kent, IV*
Nevada A. Kent, IV	Director
/s/ Richard M. Sanborn*
Richard M. Sanborn	Director
/s/ Anthony R. Scavuzzo*
Anthony R. Scavuzzo	Director
/s/ Eloise E. Schmitz*
Eloise E. Schmitz	Director
/s/ Sandra A. Van Trease*
Sandra A. Van Trease	Director

*By: /s/ Keene S. Turner

Keene S. Turner

Attorney-In-Fact

February 19, 2021    

127

EX-10.1.14

EXHIBIT 10.1.14

ENTERPRISE FINANCIAL SERVICES CORP

AMENDED AND RESTATED 2018 STOCK INCENTIVE PLAN

NONQUALIFIED STOCK OPTION AWARD

Enterprise Financial Services Corp (the “Company”) has granted you a Nonqualified Stock Option (the “Option”) under the Enterprise Financial Services Corp Amended and Restated 2018 Stock Incentive Plan (the “Plan”). The terms of the grant are set forth in the Nonqualified Stock Option Award Agreement provided to you (the “Agreement”). The following provides a summary of the key terms of the Option; however, you should read the entire Agreement, along with the terms of the Plan, to fully understand the grant.

SUMMARY OF NONQUALIFIED STOCK OPTION AWARD

Participant:	[ ]
Date of Grant:	[ ]
Vesting Schedule:	[ ]
Exercise Price Per Share:	$[ ]
Total Number of Options Granted:	[ ]
Term/Expiration Date:	[ ]

The above is a summary description of certain provisions of the Agreement and is not intended to be complete. In the event any aspect of this summary conflicts with the terms of the Agreement, the terms of the Agreement shall govern.

ENTERPRISE FINANCIAL SERVICES CORP

AMENDED AND RESTATED 2018 STOCK INCENTIVE PLAN

NONQUALIFIED STOCK OPTION AWARD AGREEMENT

This NONQUALIFIED STOCK OPTION AWARD AGREEMENT (the “Agreement”), dated as of [_____] (the “Date of Grant”), is delivered by Enterprise Financial Services Corp (the “Company”) to [______] (the “Participant”).

RECITALS

A. The Enterprise Financial Services Corp Amended and Restated 2018 Stock Incentive Plan (the “Plan”) provides for the grant of options to purchase shares of common stock of the Company. The Company has decided to make a stock option award as an inducement for the Participant to promote the best interests of the Company and its stockholders.

B. This Agreement and the grant of Option are made under, and are subject to, all of the terms and provisions of the Plan, as amended from time to time, which terms are incorporated herein by reference. Notwithstanding anything herein, the Plan to the contrary, the Option is subject to the Company’s Clawback Policy as amended from time to time. The Compensation Committee of the Board (the “Committee”) has been authorized by the Board of Directors of the Company (the “Board”) to make any and all determinations necessary to administer the Option. Capitalized terms that are used but not defined herein shall have the respective meanings accorded to such terms in the Plan.

NOW, THEREFORE, the parties to this Agreement, intending to be legally bound hereby, agree as follows:

1.Grant of Option. Subject to the terms and conditions set forth in this Agreement and in the Plan, the Company hereby grants to the Participant a Nonqualified Stock Option (the “Option”) to purchase [____] shares of common stock of the Company (“Shares”) at an exercise price of $[____] per Share.

2.Vesting. The Option shall become vested and exercisable, according to the following vesting schedule, if the Participant continues to be employed by, or provide service to, the Company from the Date of Grant until the applicable vesting date:

Vesting Date	% of Option Vested
[ ]	[33% ]
[ ]	[33% ]
[ ]	[All remaining shares ]

The vesting of the Option shall be cumulative, but shall not exceed 100% of the shares subject to the Option granted above. If the foregoing schedule would produce fractional shares, the portion of the Option that vests shall be rounded down to the nearest whole share.

3.Term of Option.

(a) The Option shall have a term of ten (10) years from the Date of Grant and shall terminate at the expiration of that period, unless it is terminated at an earlier date pursuant to the provisions of this Agreement or the Plan.

(b) Unless a later termination date is provided for in a Company-sponsored plan, policy or arrangement, or any agreement to which the Company is a party, the Option shall automatically terminate upon the happening of the first of the following events:

(i) The expiration of the ninety (90) day period after the Participant ceases to be employed by, or provide service to, the Company, if the termination is for any reason other than death, Total and Permanent Disability, or Cause.

(ii) The expiration of the one (1) year period after the Participant ceases to be employed by, or provide service to, the Company on account of the Participant’s death or Total and Permanent Disability.

(iii) The date on which the Participant ceases to be employed by, or provide services to, the Company on account of a termination by the Company for Cause. In addition, notwithstanding the prior provisions of this Paragraph 3, if the Company determines that the Participant has engaged in conduct that constitutes Cause at any time while the Participant is employed by, or providing services to, the Company or after the Participant’s termination of employment or services, the Option shall terminate as of the date on which such Cause first occurred.

Notwithstanding the foregoing, in no event may the Option be exercised after the date that is immediately before the tenth anniversary of the Date of Grant. Any portion of the Option that is not vested and exercisable at the time the Participant ceases to be employed by, or provide service to, the Company shall immediately terminate.

(c) For the purposes of this Agreement, “Cause” shall mean any event which constitutes Cause as defined in the employment agreement, offer letter or other arrangement between the Company and the Participant, or, if no such definition exists, the occurrence of any of the following: (i) the willful and continued failure by the Participant to substantially perform his or her duties and obligations to the Company (other than any such failure resulting from any physical or mental condition, whether or not such condition constitutes a Disability), or (ii) the willful engaging by the Participant in misconduct that is materially injurious to the Company, monetarily or otherwise.

4.Exercise Procedures

(a) Subject to the provisions of Paragraphs 2 and 3 above, the Participant may exercise part or all of the Option by giving the Company written notice of intent to exercise in the manner provided in this Agreement, specifying the number of Shares as to which the Option is to be exercised. On the delivery date, the Participant shall pay the exercise price (i) in cash, (ii) with the approval of the Committee, by delivering Shares of the Company which shall be valued at their fair market value on the date of delivery, (iii) payment through a broker in accordance with procedures permitted by Regulation T of the Federal Reserve Board, or (iv) by such other method as the Committee may approve. The Committee may impose from time to time such limitations as it deems appropriate on the use of Shares of the Company to exercise the Option.

(b) The obligation of the Company to deliver Shares upon exercise of the Option shall be subject to all applicable laws, rules, and regulations and such approvals by governmental agencies as may be deemed appropriate by the Company, including such actions as Company counsel shall deem necessary or appropriate to comply with relevant securities laws and regulations.

(c) The Company may require that the Participant (or other person exercising the Option after the Participant’s death) represent that the Participant is purchasing Shares for the Participant’s own account and not with a view to or for sale in connection with any distribution of the Shares, or such other representation as the Committee deems appropriate.

(d) All obligations of the Company under this Agreement shall be subject to the rights of the Company as set forth in the Plan to withhold amounts required to be withheld for any taxes, if applicable. Subject to Committee approval, the Participant may elect to satisfy any tax withholding obligation of the Company with respect to the Option by having Shares withheld up to an amount that does not exceed the minimum applicable withholding tax rate for federal (including FICA), state and local tax liabilities.

5.Termination of Employment.

(a) Generally, except as set forth in subsections (b), (c), (d), (e), and (f) below, if the Participant’s employment with the Company terminates for any reason, the unvested portion of the Option shall be cancelled immediately and the Participant shall immediately forfeit without any consideration any rights to the Shares subject to such unvested portion.

(b) Retirement. In the event of the Participant’s Retirement (as hereinafter defined), the Option shall vest immediately on the date of the Participant’s Retirement. For purposes of this Agreement, “Retirement” means the Participant’s termination of employment with the Company, other than for reasons that constitute deliberate gross misconduct, determined in the sole discretion of the Committee, after the time that the Participant has attained 65 years of age and the sum of the Participant’s age and continuous full years of full time employment service with the Company is 70 (e.g., having attained the age of 65 with 5 years of employment with the Company would qualify the Participant for Retirement). For these purposes, the Participant will be deemed to have a year of full time employment service with the Company if the Participant

would be entitled to receive credit for a year of service under a qualified pension plan in accordance with Internal Revenue Code § 1053(b)(2)(c).

(c) Early Retirement. In the event of the Participant’s Early Retirement (as hereinafter defined), the Option shall vest immediately on the date of the Participant’s Early Retirement. For purposes of this Agreement, “Early Retirement” means the Participant’s termination of employment with the Company, other than for reasons that constitute deliberate gross misconduct, determined in the sole discretion of the Committee, after the time that the Participant has attained 60 years of age and the sum of the Participant’s attained age and continuous full years of full time employment service with the Company is 70 (e.g., having attained the age of 60 with 10 years of employment with the Company would qualify the Participant for Early Retirement). For these purposes, the Participant will be deemed to have a year of full time employment service with the Company if the Participant would be entitled to receive credit for a year of service under a qualified pension plan in accordance with Internal Revenue Code §1053(b)(2)(c).

(d) Death, Disability. Notwithstanding the foregoing, in the event the Participant’s employment with the Company terminates due to the death or Disability of the Participant, the Option shall vest on the date of the Participant’s death or termination due to Disability. For purposes of this Agreement, “Disability” shall mean the Participant’s qualification for disability benefits under the Social Security disability insurance program, or if the Participant is determined to be permanently disabled by the Committee in its discretion.

(e) Termination without Cause. If the Company terminates the Participant’s employment without Cause outside the Change of Control Period (as defined below), then the Option shall expire on the earlier of the last day of the term of the Option and the date that is ninety (90) days after the date of such termination; provided, however, that if the Participant’s employment is terminated and the Participant is subsequently rehired within 90 days following such termination and prior to the expiration of the Option, the Participant shall not be considered to have undergone a termination of employment. In the event of a termination described in this subsection (c), the Option shall remain exercisable by the Participant until its expiration only to the extent that the Option was exercisable at the time of such termination.

(f) Change of Control. Notwithstanding the foregoing, in the event the Participant’s employment with the Company is terminated by the Company without Cause during the period beginning three (3) months prior to and ending twelve (12) months following a Change of Control (the “Change of Control Period”), the Option shall immediately vest on the date of the Participant’s termination of employment.

6.Restrictions on Exercise. Except as the Company may otherwise permit pursuant to the Plan, only the Participant may exercise the Option during the Participant’s lifetime and, after the Participant’s death, the Option shall be exercisable (subject to the limitations specified in the Plan) solely by the legal representatives of the Participant, or by the person who acquires the right to exercise the Option by will or by the laws of descent and distribution, to the extent that the Option is vested and exercisable pursuant to this Agreement.

7.Adjustments. Appropriate adjustments in the number of Shares shall be made by the Committee to give effect to adjustments made in the number or type of shares of common stock through a reclassification, stock dividend, stock split or stock combination, or similar event in accordance with the terms of the Plan.

8.Grant Subject to Plan Provisions. This grant is made pursuant to the Plan, the terms of which are incorporated herein by reference, and in all respects shall be interpreted in accordance with the Plan. The grant and exercise of the Option are subject to interpretations, regulations and determinations concerning the Plan established from time to time by the Committee in accordance with the provisions of the Plan, including, but not limited to, provisions pertaining to (i) rights and obligations with respect to withholding taxes, (ii) the registration, qualification or listing of the Shares, (iii) changes in capitalization of the Company and (iv) other requirements of applicable law. The Committee shall have the authority to interpret and construe the Option pursuant to the terms of the Plan, and its decisions shall be conclusive as to any questions arising hereunder.

9.No Employment or Other Rights. The grant of the Option shall not confer upon the Participant any right to be retained by or in the employ or service of the Company and shall not interfere in any way with the right of the Company to terminate the Participant’s employment or service at any time. The right of the Company to terminate at will the Participant’s employment or service at any time for any reason is specifically reserved.

10.No Shareholder Rights. Neither the Participant, nor any person entitled to exercise the Participant’s rights in the event of the Participant’s death, shall have any of the rights and privileges of a shareholder with respect to the Shares subject to the Option, until certificates for Shares have been issued upon the exercise of the Option.

11.Compliance with Section 409A of the Code. It is intended that this Agreement shall be administered in a manner that will comply with or meet an exception from Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and this Agreement shall be administered and interpreted in accordance with such intent. The Committee may adopt rules deemed necessary or appropriate to qualify for an exception from or to comply with the requirements of Section 409A of the Code. Notwithstanding anything in this Section 13 to the contrary, no amendment to or payment under this Agreement will be made unless permitted under Section 409A of the Code.

12.Delivery Subject to Legal Requirements. The obligation of the Company to deliver Shares pursuant to the exercise of the Option shall be subject to the condition that if at any time the Board shall determine in its discretion that the listing, registration or qualification of the shares upon any securities exchange or under any state or federal law, or the consent or approval of any governmental regulatory body is necessary or desirable as a condition of, or in connection with, the issue of shares, the shares may not be issued in whole or in part unless such listing, registration, qualification, consent or approval shall have been effected or obtained free of any conditions not acceptable to the Board. The issuance of Shares to the Participant pursuant to the exercise of the Option is subject

to any applicable taxes and other laws or regulations of the United States, or of any state having jurisdiction thereof.

13.Assignment and Transfers. Except as the Committee may otherwise permit pursuant to the Plan, the rights and interests of the Participant under this Agreement may not be sold, assigned, encumbered or otherwise transferred except, in the event of the death of the Participant, by will or by the laws of descent and distribution. In the event of any attempt by the Participant to alienate, assign, pledge, hypothecate, or otherwise dispose of the Option or any right hereunder, except as provided for in this Agreement, or in the event of the levy or any attachment, execution or similar process upon the rights or interests hereby conferred, the Company may terminate the Option by notice to the Participant, and the Option and all rights hereunder shall thereupon become null and void. The rights and protections of the Company hereunder shall extend to any successors or assigns of the Company and to the Company’s parents, subsidiaries, and affiliates. This Agreement may be assigned by the Company without the Participant’s consent.

14.Applicable Law. The validity, construction, interpretation and effect of this Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, without giving effect to the conflicts of laws provisions thereof.

15.Notice. Any notice to the Company provided for in this Agreement shall be addressed to the Company in care of the Committee, and any notice to the Participant shall be addressed to such Participant at the current address shown on the payroll of the Company, or to such other address as the Participant may designate to the Company in writing. Any notice shall be delivered by hand, sent by telecopy or enclosed in a properly sealed envelope addressed as stated above, deposited, postage prepaid, in a post office regularly maintained by the United States Postal Service.

16.Counterparts. This Agreement may be executed in one or more counterparts, each of which will be deemed to be an original copy of this Agreement and all of which, when taken together, will be deemed to constitute one and the same agreement. Facsimile or other electronic transmission of any signed original document or retransmission of any signed facsimile or other electronic transmission will be deemed the same as delivery of an original.

17.Complete Agreement. Except as otherwise provided for herein, this Agreement and those agreements and documents expressly referred to herein embody the complete agreement and understanding among the parties and supersede and preempt any prior understandings, agreements or representations by or among the parties, written or oral, which may have related to the subject matter hereof in any way. The terms of this Agreement shall be binding upon the executors, administrators, heirs, successors and assigns of the Participant.

18.Committee Authority. By entering into this Agreement the Participant agrees and acknowledges that all decisions and determinations of the Committee shall be final and binding on the Participant, his or her beneficiaries and any other person having or claiming an interest in the Award.

IN WITNESS WHEREOF, the Company has caused its duly authorized officer to execute this Agreement, and the Participant has executed this Agreement, effective as of the date first set forth above.

Enterprise Financial Services Corp

By:

Name:

Title:

I hereby accept the Option described in this Agreement, and I agree to be bound by the terms of the Plan and this Agreement. I hereby further agree that all the decisions and determinations of the Committee shall be final and binding.

Participant:

Date:

EX-21.1

EXHIBIT 21.1

SUBSIDIARIES OF THE REGISTRANT

Company	State of Organization
Enterprise Bank & Trust	Missouri
Enterprise Real Estate Mortgage Company, LLC	Missouri
Enterprise IHC, LLC	Missouri
Enterprise Portfolio Holdings, Inc.	Nevada

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-136230, 333-148328, 333-152985, 333-183177, 333-192497, 333-215345, 333-226407, and 333-192497 on Form S-8, and 333-237612 on Form S-3 of our report dated February 19, 2021 relating to the consolidated financial statements of Enterprise Financial Services Corp and subsidiaries (the “Company”), and the effectiveness of the Company’s internal control over financial reporting, appearing in this Annual Report on Form 10-K for the year ended December 31, 2020.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

February 19, 2021

EX-24.1

EXHIBIT 24.1

POWER OF ATTORNEY

The undersigned members of the Board of Directors and Executive Officers of Enterprise Financial Services Corp, a Delaware corporation (the "Company") hereby appoint Keene S. Turner or James Lally as their Attorney-in-Fact for the purpose of signing the Company's Securities Exchange Commission Form 10-K (and any amendments thereto) for the year ended December 31, 2020.

Signature	Title	Date
/s/ John S. Eulich	Chairman of the Board of Directors	February 19, 2021
John S. Eulich
/s/ Michael A. DeCola	Director	February 19, 2021
Michael A. DeCola
/s/ James F. Deutsch	Director	February 19, 2021
James F. Deutsch
/s/ Robert E. Guest, Jr.	Director	February 19, 2021
Robert E. Guest, Jr.
/s/ James M. Havel	Director	February 19, 2021
James M. Havel
/s/ Judith S. Heeter	Director	February 19, 2021
Judith S. Heeter
/s/ Michael R. Holmes	Director	February 19, 2021
Michael R. Holmes
/s/ Nevada A. Kent, IV	Director	February 19, 2021
Nevada A. Kent, IV
/s/ Richard M. Sanborn	Director	February 19, 2021
Richard M. Sanborn
/s/ Anthony R. Scavuzzo	Director	February 19, 2021
Anthony R. Scavuzzo
/s/ Eloise E. Schmitz	Director	February 19, 2021
Eloise E. Schmitz
/s/ Sandra A. Van Trease	Director	February 19, 2021
Sandra A. Van Trease

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, James B. Lally, certify that:

1.I have reviewed this annual report on Form 10-K of Enterprise Financial Services Corp;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

By:	/s/ James B. Lally	Date:	February 19, 2021
James B. Lally
Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Keene S. Turner, certify that:

1.I have reviewed this annual report on Form 10-K of Enterprise Financial Services Corp;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have; and

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

By:	/s/ Keene S. Turner	Date:	February 19, 2021
Keene S. Turner
Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Enterprise Financial Services Corp (the “Company”) on Form 10-K for the period ended December 31, 2020 as filed with the Securities and Exchange Commission (the “Report”), I, James B. Lally, Chief Executive Officer of the Company, certify to the best of my knowledge and belief, pursuant to 18 U.S.C. § 1350, as enacted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ James B. Lally

James B. Lally

Chief Executive Officer

February 19, 2021

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Enterprise Financial Services Corp (the “Company”) on Form 10-K for the period ended December 31, 2020 as filed with the Securities and Exchange Commission (the “Report”), I, Keene S. Turner, Chief Financial Officer of the Company, certify to the best of my knowledge and belief, pursuant to 18 U.S.C. § 1350, as enacted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Keene S. Turner

Keene S. Turner

Chief Financial Officer

February 19, 2021

XML

Document and Entity Information Document - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Feb. 17, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-15373
Entity Registrant Name	ENTERPRISE FINANCIAL SERVICES CORP
Entity Central Index Key	0001025835
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1706259
Entity Address, Address Line One	150 North Meramec Avenue
Entity Address, City or Town	Clayton
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63105
City Area Code	314
Local Phone Number	725-5500
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	EFSC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 740,426
Entity Common Stock, Shares Outstanding		31,225,229
Documents Incorporated by Reference	he information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K is incorporated by reference to the Registrant’s Definitive Proxy Statement for its 2021 Annual Meeting of Shareholders, which will be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended.
ICFR Auditor Attestation Flag	true

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 99,760	$ 74,769
Federal funds sold	1,519	3,060
Interest-earning deposits (including $36,525 and $15,285 pledged as collateral, respectively)	436,424	89,427
Total cash and cash equivalents	537,703	167,256
Interest-earning deposits greater than 90 days	7,626	3,730
Securities available-for-sale	912,429	1,135,317
debt securities, held to maturity, net of alloawance for credit losses	487,610	181,166
Trade and Loans Receivables Held-for-sale, Net, Not Part of Disposal Group	13,564	5,570
Loans	7,224,935	5,314,337
Less: Allowance for credit losses on loans	136,671	43,288
Total loans, net	7,088,264	5,271,049
Other investments	48,764	38,044
Fixed assets, net	53,169	60,013
Goodwill	260,567	210,344
Intangible assets, net	23,084	26,076
Other assets	318,791	235,226
Total assets	9,751,571	7,333,791
Liabilities and Shareholders' equity
Noninterest-bearing deposit accounts	2,711,828	1,327,348
Interest-bearing transaction accounts	1,768,497	1,367,444
Money market accounts	2,327,066	1,713,615
Savings accounts	627,903	536,169
Certificates of deposit:
Brokered	50,209	215,758
Other	499,886	610,689
Total deposits	7,985,389	5,771,023
Subordinated debentures and notes	203,637	141,258
FHLB advances	50,000	222,406
Other borrowings	271,081	230,886
Notes payable	30,000	34,286
Other liabilities	132,489	66,747
Total liabilities	8,672,596	6,466,606
Shareholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 0 shares issued and outstanding	0	0
Common stock, $0.01 par value; 45,000,000 shares authorized; 33,190,306 and 28,067,087 shares issued, respectively	332	281
Treasury stock, at cost; 1,980,093 and 1,523,842 shares, respectively	(73,528)	(58,181)
Additional paid in capital	697,839	526,599
Retained earnings	417,212	380,737
Accumulated other comprehensive income	37,120	17,749
Total shareholders' equity	1,078,975	867,185
Total liabilities and shareholders' equity	$ 9,751,571	$ 7,333,791

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Collateral pledged	$ 36,525	$ 15,285
State Tax Credits Held For Sale, Fair Value Disclosure	$ 0	$ 0
Shareholders' equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	33,190,306	28,067,087
Treasury stock, shares	1,980,093	1,523,842

XML

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest income:
Interest and fees on loans	$ 270,238	$ 269,406	$ 217,212
Interest on debt securities:
Taxable	24,629	29,030	17,469
Nontaxable	8,397	3,515	1,074
Interest on interest-earning deposits	620	2,128	1,141
Dividends on equity securities	895	1,055	906
Total interest income	304,779	305,134	237,802
Interest expense:
Interest Expense, Deposits	21,049	49,856	33,769
Subordinated debentures and notes	9,885	7,507	5,798
FHLB advances	2,673	6,668	5,556
Notes payable and other borrowings	1,171	2,386	774
Total interest expense	34,778	66,417	45,897
Net interest income	270,001	238,717	191,905
Provision for credit losses	65,398	6,372	6,644
Net interest income after provision for credit losses	204,603	232,345	185,261
Noninterest income:
Total noninterest income	54,503	49,176	38,347
Noninterest expense:
Employee compensation and benefits	92,288	81,295	66,039
Occupancy	13,457	12,465	9,550
Data processing	9,050	8,242	6,321
Professional fees	3,940	3,683	3,134
Merger Related Expenses	4,174	17,969	1,271
Other	44,250	41,831	32,716
Total noninterest expense	167,159	165,485	119,031
Income before income tax expense	91,947	116,036	104,577
Income tax expense	17,563	23,297	15,360
Net income	$ 74,384	$ 92,739	$ 89,217
Earnings per common share
Basic (usd per share)	$ 2.76	$ 3.56	$ 3.86
Diluted (usd per share)	$ 2.76	$ 3.55	$ 3.83
Deposit Account [Member]
Noninterest income:
Total noninterest income	$ 11,717	$ 12,801	$ 11,749
Fiduciary and Trust [Member]
Noninterest income:
Total noninterest income	9,732	9,932	8,241
Card Services Revenue [Member]
Noninterest income:
Total noninterest income	9,481	9,154	6,686
Tax credit activity, net [Member]
Noninterest income:
Total noninterest income	6,611	5,393	2,820
Financial Service, Other [Member]
Noninterest income:
Total noninterest income	$ 16,962	$ 11,896	$ 8,851

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	$ 74,384	$ 92,739	$ 89,217
Other comprehensive income (loss), net of tax:
Change in unrealized gain (loss) on available-for-sale debt securities									23,944	29,189	(4,626)
Reclassification adjustment for realized (gain) loss on the sale of available-for-sale debt securities									(317)	37	(7)
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, net of tax									(1,910)	(33)	3
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax									(5,947)	(2,262)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax									3,601	100	0
Other comprehensive income (loss), net									19,371	27,031	(4,630)
Total comprehensive income									$ 93,755	$ 119,770	$ 84,587

XML

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other comprehensive income, tax:
Unrealized (loss)/gain on investment securities available for sale arising during the period, tax	$ (7,854)	$ (9,575)	$ 1,517
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, tax	(104)	12	(2)
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, tax	627	11	(1)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	1,951	742	0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, tax	$ 1,181	$ 33	$ 0

XML

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional paid in capital	Retained earnings	Accumulated other comprehensive income (loss)
Balance at Dec. 31, 2017	$ 548,573	$ 238	$ (23,268)	$ 350,061	$ 225,360	$ (3,818)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	89,217	0	0	0	89,217	0
Other comprehensive income (loss)	(4,630)	0	0	0	0	(4,630)
Cash dividends paid on common shares	(10,845)	0	0	0	(10,845)	0
Repurchase of preferred stock	(19,387)	0	(19,387)	0	0	0
Issuance under equity compensation plans, net	(2,576)	1	0	(2,577)	0	0
Share-based compensation	3,452	0	0	3,452	0	0
Reclassification adjustments for change in accounting policies	0	0	0	0	(834)	834
Balance at Dec. 31, 2018	$ 603,804	239	(42,655)	350,936	304,566	(9,282)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares	435,432
Shares Awarded Through Acquisition	0
Net income	$ 92,739	0	0	0	92,739	0
Other comprehensive income (loss)	27,031	0	0	0	0	27,031
Cash dividends paid on common shares	(16,568)	0	0	0	16,568	0
Repurchase of preferred stock	(15,526)	0	(15,526)	0	0	0
Issuance under equity compensation plans, net	(212)	2	0	(214)	0	0
Shares issued in connection with acquisition of Seacoast Commerce Banc Holdings, 4,977,214 shares	171,885	40	0	171,845	0	0
Share-based compensation	4,032	0	0	4,032	0	0
Balance at Dec. 31, 2019	$ 867,185	281	(58,181)	526,599	380,737	17,749
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares	396,737
Shares Awarded Through Acquisition	3,990,822
Net income	$ 74,384	0	0	0		0
Other comprehensive income (loss)	19,371	0	0	0	0	19,371
Cash dividends paid on common shares	(19,795)	0	0	0	(19,795)	0
Repurchase of preferred stock	(15,347)	0	(15,347)	0	0	0
Issuance under equity compensation plans, net	78	1	0	77	0	0
Shares issued in connection with acquisition of Seacoast Commerce Banc Holdings, 4,977,214 shares	167,035	50	0	166,985	0	0
Share-based compensation	4,178	0	0	4,178	0	0
Balance at Dec. 31, 2020	$ 1,078,975	332	(73,528)	697,839	417,212	37,120
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Repurchased During Period, Shares	0
Reclassification adjustments for change in accounting policies	$ 18,114	$ 0	$ 0	$ 0	$ 18,114	$ 0
Shares Awarded Through Acquisition	4,977,214

XML

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash dividends paid on common shares, per share	$ 0.72	$ 0.62	$ 0.47
Issuance under equity compensation plans, shares	146,005	174,895	157,882
Stock Issued During Period, Shares, Conversion of Convertible Securities	0	0	0
Shares Awarded Through Acquisition	4,977,214	3,990,822	0
Stock Repurchased During Period, Shares	0	396,737	435,432

XML

Consolidated Statements of Cash Flows - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 74,384	$ 92,739	$ 89,217
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,152	5,719	3,532
Provision for credit losses	65,398	6,372	6,644
Deferred income taxes	(12,578)	5,800	3,307
Net amortization of debt securities	6,745	2,973	1,691
Amortization of intangible assets	5,673	5,543	2,503
Mortgage loans originated-for-sale	(223,094)	(81,941)	(36,229)
Proceeds from mortgage loans sold	217,934	77,302	39,310
Gain on sale of investment securities	(421)	49	(9)
Sale of other real estate	13	(113)	(13)
Sale of state tax credits	(2,016)	(2,549)	(2,820)
Share-based compensation	4,178	4,032	3,452
Net accretion of loan discount	(7,767)	(10,494)	(1,700)
Changes in other assets and liabilities, net	913	(12,975)	(77)
Net cash provided by operating activities	135,514	92,457	108,808
Cash flows from investing activities:
Net cash paid for acquisitions and dispositions	62,114	(23,377)	0
Net increase in loans	(700,096)	(284,235)	(257,872)
Sale of debt securities, available-for-sale	20,221	357,976	1,451
Paydown or maturity of debt securities, available-for-sale	329,350	146,132	84,189
Paydown or maturity of debt securities, held-to-maturity	41,377	7,447	6,397
Redemption of other investments	43,555	61,917	50,274
Sale of state tax credits held-for-sale	14,252	14,689	14,718
Sale of other real estate	652	4,798	875
Settlement of bank-owned life insurance policies	1,993	0	1,256
Payments for the purchase of:
Available for sale debt securities	(452,541)	(577,211)	(172,026)
Other investments	(50,421)	(68,963)	(51,828)
State tax credits held-for-sale	(11,026)	(11,356)	(6,017)
Fixed assets	(2,259)	(6,337)	(3,035)
Net cash used in investing activities	(702,829)	(378,520)	(331,618)
Cash flows from financing activities:
Net increase (decrease) in noninterest-bearing deposit accounts	627,756	57,551	(23,189)
Net increase in interest-bearing deposit accounts	505,604	44,300	454,760
Proceeds from the issuance of subordinated notes	61,953	0	0
Proceeds (repayments) from short-term FHLB advances, net	(172,300)	95,500	(102,500)
Proceeds from long-term FHLB advances	0	50,000	0
Repayment of PPPLF advances	(86,096)	0	0
Proceeds from Notes Payable	0	41,000	2,000
Repayments of Notes Payable	(4,286)	(8,714)	0
Net increase (decrease) in other borrowings	40,195	9,436	(32,224)
Cash dividends paid on common stock	(19,795)	(16,568)	(10,845)
Payments for Repurchase of Common Stock	(15,347)	(15,526)	(19,387)
Payments for Repurchase of Equity	78	(212)	(2,576)
Net cash provided by financing activities	937,762	256,767	266,039
Net (decrease) increase in cash and cash equivalents	370,447	(29,296)	43,229
Cash and cash equivalents, beginning of period	167,256	196,552	153,323
Cash and cash equivalents, end of period	537,703	167,256	196,552
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	35,423	65,667	45,650
Cash paid during the period for income taxes	7,514	13,582	10,136
Noncash transactions:
Real Estate Owned, Transfer to Real Estate Owned	798	8,148	876
Sales of other real estate financed	48	621	0
Transfer of securities from available-for-sale to held-to-maturity	352,665	116,303	0
Transfer from fixed assets to loans	3,336	0	0
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,623	$ 5,208	$ 0
Stock Issued During Period, Shares, Acquisitions	167,035	171,885	0

XML

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Core deposit intangible, net, end of year	$ 23,084
Goodwill [Line Items]
Goodwill	260,567	$ 210,344
Goodwill Acquired Through Acquisition	50,223	92,999
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Asset, Residual Value	2,681	23,066
Amortization	(5,673)	(5,543)
Core deposit intangible, net, end of year	$ 23,084	$ 26,076

XML

Parent Company Only Condensed Financial Statements (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Collateral pledged	$ 36,525	$ 15,285

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The significant accounting policies used by the Company in the preparation of the consolidated financial statements are summarized below.

Business and Consolidation

Enterprise is a financial holding company that provides a full range of banking and wealth management services to individuals and corporate customers primarily located in the Arizona, California, Kansas, Missouri, Nevada, and New Mexico markets through its banking subsidiary, Enterprise Bank & Trust. All intercompany accounts and transactions have been eliminated.

The Company and its banking subsidiary are subject to the regulations of certain federal and state agencies and undergo periodic examinations by those regulatory agencies. The Company has one operating segment.

Use of Estimates

The consolidated financial statements of the Company have been prepared in conformity with GAAP. In preparing the consolidated financial statements, management is required to make estimates and assumptions, which significantly affect the reported amounts in the consolidated financial statements. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

Cash Flow Information

For purposes of reporting cash flows, the Company considers cash and due from banks, interest-bearing deposits and federal funds sold that mature within 90 days of the balance sheet date to be cash and cash equivalents. At December 31, 2019, approximately $9.7 million of cash and due from banks represented required reserves on deposits maintained by the Company in accordance with Federal Reserve requirements. There were no required reserves on December 31, 2020.

Recent Accounting Pronouncements

On January 1, 2020, the Company adopted ASU 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” (ASU 2016-13) which replaces the incurred loss methodology with an expected loss methodology commonly referred to as the CECL methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet credit exposures such as loan commitments, standby letters of credit, financial guarantees, and other similar instruments. In addition, this standard made changes to the accounting for available-for-sale debt securities, including the requirement for credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities.

The Company adopted this standard using the modified retrospective method for all financial assets measured at amortized cost, and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under the new standard while prior period amounts continue to be reported in accordance with

previously applicable GAAP. The Company recorded an after-tax decrease to retained earnings of $18.1 million as of January 1, 2020 for the cumulative effect of adopting this standard.

The Company adopted this standard using the prospective transition approach for PCD assets that were previously classified as PCI assets. Management did not reassess whether PCI assets met the criteria of PCD assets as of the date of the adoption.

The Company elected not to maintain PCI pools for certain loans which are now accounted for individually. Thus they are now included in nonperforming and classified loans. Management did not reassess whether modifications to individual acquired financial assets accounted for in pools were troubled debt restructurings as of the date of adoption.

The following table illustrates the impact of adoption:

($ in thousands)	December 31, 2019		Impact of Adoption		January 1, 2020
Assets:
Loans	$	5,314,337	$	7,091	$	5,321,428
Allowance for credit losses on loans	43,288		28,387		71,675
Allowance for credit losses on held-to-maturity debt securities	—		303		303
Deferred tax asset	14,851		5,898		20,749
Liabilities:
Reserve for unfunded commitments	430		2,413		2,843
Shareholders’ Equity
Retained Earnings	380,737		(18,114)		362,623

On January 1, 2020, the Company adopted ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement”. The Company previously selected the option to adopt the removal or modification of disclosures during the second quarter of 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty are applied prospectively for only the most recent interim or annual period presented. All other amendments are applied retrospectively to all periods presented upon their effective date. The adoption of this update did not have a material effect on the Company's consolidated financial statements.

On January 1, 2020, the Company adopted ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, (ASU 2017-04). ASU 2017-04 simplifies the quantitative measurement of goodwill by eliminating Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The adoption of this update did not have a material effect on the Company's consolidated financial statements.

ASU 2021-01, Reference Rate Reform (Topic 848): Scope (ASU 2021-01). ASU 2021-01 was issued in January 2021 and provided optional expedients and exceptions in ASC 848 to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendment only applies to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do

not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this update were effective immediately upon issuance and did not have a material effect on the Company's consolidated financial statements.

Investments

The Company has classified all investments in debt securities as available-for-sale or held-to-maturity.

Securities classified as available-for-sale are carried at fair value. Unrealized holding gains and losses for available-for-sale securities are excluded from earnings and reported as a net amount in a separate component of shareholders’ equity until realized. All previous fair value adjustments included in the separate component of shareholders’ equity are reversed upon sale.

Securities classified as held-to-maturity are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts.

Prior to the adoption of ASU 2016-13 on January 1, 2020, declines in the fair value of securities below their cost deemed to be other-than-temporary were reflected in operations as realized losses. In estimating other-than-temporary impairment losses, management evaluated investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis required management to consider various factors, which included (1) the present value of the cash flows expected to be collected compared to the amortized cost of the security, (2) duration and magnitude of the decline in value, (3) the financial condition of the issuer or issuers, (4) structure of the security, and (5) the intent to sell the security or whether it’s more likely than not the Company would be required to sell the security before its anticipated recovery in market value.

An ACL on held-to-maturity securities is deducted from the amortized cost basis of the securities to reflect the expected amount to be collected. When it is determined that a security will not be collected, the balance is written-off through the allowance. In evaluating the need for an ACL, securities with similar risk characteristics are grouped and an estimate of expected cash flows is determined using historical loss experience, adjusted for current and reasonable and supportable forecasts of economic conditions.

For available-for-sale securities in a loss position, the Company evaluates whether the decline in fair value below amortized cost resulted from a credit loss or other factors. Losses attributed to credit are recognized through an ACL on available-for-sale securities, limited to the amount that the fair value of securities is less than the amortized cost basis. In assessing credit loss, the Company considers, among other things, (1) the extent to which fair value is less than the amortized cost basis, (2) adverse conditions specific to the security or industry, (3) historical payment patterns, (4) the likelihood of future payments, and (5) changes to the rating of a security by a rating agency.

The Company has elected to exclude accrued interest receivable balances from the estimate of the ACL as these amounts are timely written off as a credit loss expense. Adjustments to the ACL on held-to-maturity and available-for-sale securities are recognized as a component of the provision for credit losses in the Consolidated Statements of Operations.

Premiums and discounts are amortized or accreted over the expected lives of the respective securities as an adjustment to yield using the interest method. Dividend and interest income is recognized when earned. Realized gains and losses are included in earnings and are derived using the specific identification method for determining the cost of securities sold.

Loans Held-for-Sale and Servicing Assets

The Company provides long-term financing of one-to-four-family residential real estate by originating fixed and variable rate loans. Long-term fixed and variable rate loans are usually sold into the secondary market with limited recourse. Upon receipt of an application for a real estate loan, the Company determines whether the loan will be sold into the secondary market or retained in the Company’s loan portfolio. The interest rates on the loans sold are

locked with the buyer and the Company bears no interest rate risk related to these loans. Mortgage loans held-for-sale are carried at the lower of cost or fair value, which is determined on a specific identification method. The Company does not retain servicing on these loans.

The Company also originates SBA7(a) loans that generally provides for a guarantee of 75% up to a maximum amount. The guaranteed portion of the loan can be sold in an active secondary market. For the year ended December 31, 2020, all SBA7(a) loans are considered held-for-investment; however, as the Company makes the determination to sell the loans, they will be moved into the held-for-sale category. Sales of SBA guaranteed loans are executed on a servicing retained basis, and the Company retains the rights and obligations to service the loans. At December 31, 2020, the Company was servicing $296 million in SBA loans and has recorded a related servicing asset of $5.7 million. The servicing asset is accounted for under the amortization method and is evaluated for impairment. Amortization of the servicing asset is recorded as a reduction to servicing income.

Gains on the sale of loans held-for-sale are reported net of direct origination fees and costs in the Company’s Consolidated Statements of Operations.

Loans

Loans are reported at the principal balance outstanding, net of unearned fees, costs, and premiums or discounts on acquired loans. Loan origination fees, direct origination costs, and premiums or discounts resulting from acquired loans are deferred and recognized over the lives of the related loans as a yield adjustment using the interest method.

Interest on loans is accrued to income based on the principal balance outstanding. The recognition of interest income is discontinued when a loan becomes 90 days past due or a significant deterioration in the borrower’s credit has occurred which, in management’s judgment, negatively impacts the collectibility of the loan. Unpaid interest on such loans is reversed at the time the loan becomes uncollectible and subsequent interest payments received are generally applied to principal if any doubt exists as to the collectibility of such principal. Loans that have not been restructured are returned to accrual status when management believes full collectibility of principal and interest is expected. Non-accrual loans that have been restructured will remain in a non-accrual status until the borrower has made at least six months of consecutive contractual payments.

The Company has elected to present the accrued interest receivable balance separate from amortized cost basis, to exclude accrued interest receivable balances from the tabular disclosures, and not to estimate an ACL on accrued interest receivable as these amounts are timely written off as a credit loss expense.

Accrued interest receivable totaled $31.1 million at December 31, 2020 and was reported in Other Assets on the consolidated balance sheets.

Acquired Loans

Prior to the adoption of ASU 2016-13 on January 1, 2020, PCI loans were acquired in a business combination or transaction, had evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that the Company would be unable to collect all contractually required payments receivable. PCI loans were initially recorded at fair value (as determined by the present value of expected future cash flows) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loans, or the “accretable yield,” was recognized as interest income on a level-yield method over the life of the loans. Contractually required payments for interest and principal that exceeded the undiscounted cash flows expected at acquisition, or the “nonaccretable difference,” were not recognized as a yield adjustment or as a loss accrual or a valuation allowance. The Company aggregated individual loans with common risk characteristics into pools of loans. Increases in expected cash flows subsequent to the initial investment were recognized prospectively through adjustment of the yield on the loans over their remaining lives. Decreases in expected cash flows due to an inability to collect contractual cash flows were recognized as impairment through the provision for loan losses account. Any allowance for loan loss on these pools reflected only losses incurred after the acquisition. Disposals of loans, including sales of loans, paydowns, payments in full or foreclosures resulted in the removal or reduction of the loan from the loan pool.

Subsequent to the adoption of ASU 2016-16, acquired loans are separated into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (PCD), for loans which have experienced more than insignificant credit deterioration since origination, or loans with no credit deterioration (non-PCD). At the date of acquisition, an ACL on PCD loans is determined and added to the amortized cost basis of the individual loans. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. The ACL on PCD loans is recorded in the acquisition accounting and no provision for credit losses is recognized at the acquisition date. Subsequent changes to the ACL are recorded through provision expense. For non-PCD loans, an ACL is established immediately after the acquisition through a charge to the provision for credit losses.

The ACL for both PCD and non-PCD is determined by pooling loans with similar risk characteristics and using the approach discussed below under “Allowance for Credit Losses on Loans”.

Impaired Loans

Loans are considered “impaired” when it becomes probable that the Company will be unable to collect all amounts due according to the loan’s contractual terms. Non-accrual loans, loans past due greater than 90 days and still accruing, unless adequately secured and in the process of collection, and restructured loans qualify as “impaired loans.” Restructured loans involve the granting of a concession on the terms of a loan to a borrower experiencing financial difficulty. Concessions may be granted in various forms, including changes in payment schedule or interest rate.

When measuring impairment, the expected future cash flows of an impaired loan are discounted at the loan’s effective interest rate at origination. Alternatively, impairment can be measured by reference to an observable market price, if one exists, or the fair value of the collateral for a collateral-dependent loan. Loans and leases, which are deemed uncollectible, are charged off to the allowance for credit losses, while recoveries of amounts previously charged off are credited to the allowance for credit losses.

Loans are generally placed on non-accrual status when contractually past due 90 days or more as to interest or principal payments. Additionally, whenever management becomes aware of facts or circumstances that may adversely impact the collectability of principal or interest on loans, it is management’s practice to place such loans on non-accrual status immediately, rather than delaying such action until the loans become 90 days past due. Previously accrued and uncollected interest on such loans is reversed. Income is recorded only to the extent that a determination has been made that the principal balance of the loan is collectible and the interest payments are subsequently received in cash, or for a restructured loan, the borrower has made six consecutive contractual payments. If collectibility of the principal is in doubt, payments received are applied to loan principal.

Loans past due 90 days or more but still accruing interest are also generally included in nonperforming loans. Loans past due 90 days or more but still accruing are classified as such where the underlying loans are both well secured (the collateral value covers principal and accrued interest) and in the process of collection.

Allowance for Credit Losses on Loans

The ACL on loans is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected. Loans are charged-off against the allowance when management believes the uncollectibility of a loan balance is confirmed.

Management estimates the allowance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in environmental conditions, such as changes in unemployment rates, property values, or other relevant factors.

The ACL on loans is measured on a collective basis when similar risk characteristics exist. The Company has identified the following portfolio segments:

C&I – C&I loans consist of loans to small and medium-sized businesses in a wide variety of industries. These loans are generally collateralized by inventory, accounts receivable, equipment, real estate and other commercial assets, and may be supported by other credit enhancements such as personal guarantees. Risk arises primarily due to a difference between expected and actual cash flows of the borrower. However, the recoverability of these loans is also dependent on other factors primarily dictated by the type of collateral securing these loans. The fair value of the collateral securing these loans may fluctuate as market conditions change. Included within C&I are revolving loans supported by borrowing bases that fluctuate depending on the amount of underlying collateral. A portion of C&I loans consists of sponsor finance, which are loans with senior debt exposure to private equity backed companies.

CRE – CRE loans include various types of loans for which the Company holds real property as collateral. Commercial real estate lending activity is typically restricted to owner-occupied properties or to investor properties that are owned by customers with a current banking relationship. The primary risks of CRE loans include the borrower’s inability to pay, material decreases in the value of the real estate being held as collateral and significant increases in interest rates, which may make the real estate mortgage loan unprofitable. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy.

Construction and Land Development – The Company originates loans to finance construction projects including one- to four-family residences, multifamily residences, commercial office, and industrial projects. Construction loans are generally collateralized by first liens on the real estate and have floating interest rates. Construction loans are considered to have higher risks due to construction completion and timing risk, and the ultimate repayment being sensitive to interest rate changes, governmental regulation of real property and the availability of long-term financing. Additionally, economic conditions may impact the Company’s ability to recover its investment in construction loans. Adverse economic conditions may negatively impact the real estate market which could affect the borrowers’ ability to complete and sell the project. Additionally, the fair value of the underlying collateral may fluctuate as market conditions change.

Residential Real Estate – The Company originates loans to finance one- to four-family residences, secured by both first and second liens. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Residential loans with a second lien are inherently riskier due to the junior lien position.

Agricultural – Agricultural loans are generally secured with equipment, cattle, crops or other non-real property and at times the underlying real property. Agricultural loans are primarily included as a component of CRE and C&I loans.

Consumer – The Company provides a broad range of consumer loans to customers, including personal lines of credit, credit cards and automobile loans. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Consumer loans are included as a component of Other loans.

The Company utilizes a DCF method to measure the ACL on loans collectively evaluated that are sub-segmented by credit risk levels. The DCF method incorporates assumptions for probability of default, loss given default, prepayments and curtailments over the contractual term of the loans. In determining the probability of default, the Company utilized a regression analysis to determine certain economic factors that are relevant loss drivers in the portfolio segments based on historical or peer evaluations. National unemployment is a loss driver used in nearly all portfolios, except Consumer. The annual percentage change in gross domestic product is also used in C&I, Construction, Agricultural and Consumer portfolios. The annual percentage change in a commercial real estate index, national house price index and the consumer price index are used in the CRE, Residential Real Estate and Consumer portfolios, respectively. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company.

The Company uses a one-year reasonable and supportable forecast that considers baseline, upside and downside economic scenarios. For periods beyond the forecast period, the Company reverts to historical loss rates on a straight-line basis over a one-year period.

Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate.

Loan Charge-Offs

Loans are charged-off when the primary and secondary sources of repayment (cash flow, collateral, guarantors, etc.) are less than their carrying value.

Other Real Estate

Other real estate represents property acquired through foreclosure or deeded to the Company in lieu of foreclosure on loans on which the borrowers have defaulted on the payment of principal or interest. Other real estate is recorded on an individual asset basis at the lower of cost or fair value less estimated costs to sell. The fair value of other real estate is based upon estimates of future cash flows, market value of similar assets, if available, or independent appraisals. These estimates involve significant uncertainties and judgments. As a result, fair value estimates may not be realizable in a current sale or settlement of the other real estate. Subsequent reductions in fair value are expensed within noninterest expense.

Gains and losses resulting from the sale of other real estate are credited or charged to current period earnings. Costs of maintaining and operating other real estate are expensed as incurred, and expenditures to complete or improve other real estate properties are capitalized if the expenditures are expected to be recovered upon ultimate sale of the property.

Fixed Assets

Buildings, leasehold improvements, furniture, fixtures, equipment, and capitalized software are stated at cost less accumulated depreciation. All categories are computed using the straight-line method over their respective estimated useful lives. Furniture, fixtures and equipment is depreciated over three to ten years, buildings and leasehold improvements over ten to forty years, and capitalized software over three years based upon estimated lives or lease obligation periods.

State Tax Credits

The Company has purchased the rights to receive 10-year streams of state tax credits at agreed upon discount rates and sells such tax credits to its clients and others. State tax credits are accounted for at cost. The Company is also a minority partner in a joint venture, accounted for as an equity method investment, that purchases state income tax credits for resale to customers. Income from both the sale of state tax credits and earnings from the joint venture are reported as tax credit income in the Consolidated Statements of Operations.

Cash Surrender Value of Life Insurance

The Company has purchased bank-owned life insurance policies on certain bank officers. Bank-owned life insurance is recorded at its cash surrender value. Changes in the cash surrender values, including death benefits in excess of the carrying amount, are included in noninterest income.

Federal Home Loan Bank Stock

The Bank, as a member of the FHLB, is required to maintain an investment in the capital stock of the FHLB. The stock is redeemable at par by the FHLB, and is, therefore, carried at cost and periodically evaluated for impairment. The Company records FHLB dividends in interest income.

Goodwill and Other Intangible Assets

The Company tests goodwill for impairment on an annual basis and whenever events or changes in circumstances indicate that the Company may not be able to recover the respective asset’s carrying amount. The Company’s annual test for impairment was performed in the fourth quarter of December 31, 2020. Such tests involve the use of estimates and assumptions. Core deposit intangibles are amortized using an accelerated method over an estimated useful life of approximately 10 years.

Potential impairments to goodwill must first be identified by performing a qualitative assessment which evaluates relevant events or circumstances to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If this test indicates it is more likely than not that goodwill has been impaired, then a quantitative impairment test is completed. The quantitative impairment test calculates the fair value of the reporting unit and compares it with its carrying amount, including goodwill. If the carrying amount of goodwill exceeds its implied fair market value, an impairment loss is recognized. That loss is equal to the carrying amount of goodwill that is in excess of its implied fair market value.

Impairment of Long-Lived Assets

Long-lived assets, such as fixed assets and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposal group classified as held-for-sale are presented separately in the appropriate asset and liability sections of the balance sheet.

Derivative Financial Instruments and Hedging Activities

The Company uses derivative financial instruments to assist in the management of interest rate sensitivity and to modify the repricing, maturity and option characteristics of certain assets and liabilities. In addition, the Company also offers an interest rate hedge program that includes interest rate swaps to assist its customers in managing their interest rate risk profile. In order to eliminate the interest rate risk associated with offering these products, the Company enters into derivative contracts with third parties to offset the customer contracts. 

Derivative instruments are required to be measured at fair value and recognized as either assets or liabilities in the consolidated financial statements. Fair value represents the payment the Company would receive or pay if the item were sold or bought in a current transaction. The accounting for changes in fair value (gains or losses) of a hedged item is dependent on whether the related derivative is designated and qualifies for “hedge accounting.” The Company assigns derivatives to one of these categories at the purchase date: cash flow hedge, fair value hedge, or non-designated derivatives. An assessment of the expected and ongoing hedge effectiveness of any derivative designated a fair value hedge or cash flow hedge is performed as required by the accounting standards. Derivatives are included in other assets and other liabilities in the consolidated balance sheets. The fair value amounts recognized for derivative instruments and the fair value amounts recognized for the right to reclaim or obligation to return cash collateral are not offset when represented under a master netting arrangement. Generally, the only derivative instruments used by the Company have been interest rate swaps, forward currency contracts, and interest rate caps.

Certain derivative financial instruments are not designated as cash flow or as fair value hedges for accounting purposes. These non-designated derivatives are intended to provide interest rate protection on net interest income or noninterest income but do not meet hedge accounting treatment. Customer accommodation interest rate swap contracts are not designated as hedging instruments. Changes in the fair value of these instruments are recorded in interest income or noninterest income in the consolidated statements of income depending on the underlying hedged item.

Income Taxes

The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. We evaluate the need for deferred tax asset valuation allowances based on a more-likely-than-not standard. The ability to realize deferred tax assets depends on the ability to generate sufficient positive taxable income within the carryback or carryforward periods provided for in the laws for each applicable taxing jurisdiction. We consider the following possible sources of taxable income: future reversal patterns of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences, taxable income in prior carryback years and the availability of qualified tax planning strategies. The assessment regarding whether a valuation allowance is required or should be adjusted depends on all available positive and negative factors including, but not limited to, nature, frequency, and severity of recent losses, duration of available carryforward periods, experience with tax attributes expiring unused and near and medium term financial outlook. Because of the complexity of tax laws and regulations, interpretation can be difficult and subject to legal judgment given specific facts and circumstances. It is possible that others, given the same information, may at any point in time reach different reasonable conclusions regarding the estimated amounts of accrued taxes.

Stock-Based Compensation

Stock-based compensation is recognized as an expense for stock options, restricted stock awards, performance stock units, and restricted stock units granted to employees, directors, and advisors in return for service. Equity classified awards are measured at the grant date fair value using either an observable market value or a valuation methodology, and recognized over the requisite service period on a straight-line basis. Forfeitures are recorded as they occur. A description of the Company’s stock-based employee compensation plan is described in “Note 16 - Stockholders’ Equity and Compensation Plans.”

Acquisitions and Divestitures

Acquisitions and business combinations are accounted for using the acquisition method of accounting. The assets and liabilities of the acquired entities have been recorded at their estimated fair values at the date of acquisition. Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets.

The purchase price allocation process requires an estimation of the fair values of the assets acquired and the liabilities assumed. When a business combination agreement provides for an adjustment to the cost of the combination contingent on future events, the Company includes an estimate of the acquisition-date fair value as part of the cost of the combination. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. The results of operations of the acquired business are included in the Company’s consolidated financial statements from the date of acquisition.  Merger-related expenses include costs directly related to merger or acquisition activity and include legal and professional fees, system consolidation and conversion costs, and compensation costs such as severance and retention incentives for employees impacted by acquisition activity. The Company accounts for merger-related expenses in the periods in which the costs are incurred and the services are received.

For divestitures, the Company measures an asset (disposal group) classified as held-for-sale at the lower of its carrying value at the date the asset is initially classified as held-for-sale or its fair value less costs to sell. The Company reports the results of operations of an entity or group of components that either has been disposed of or held-for-sale as discontinued operations only if the disposal of that component represents a strategic shift that has or will have a major effect on an entity’s operations and financial results.

Any incremental direct costs incurred to transact the sale are allocated against the gain or loss on the sale. These costs would include items like legal fees, title transfer fees, broker fees, etc. Any goodwill and intangible assets associated with the portion of the reporting unit to be disposed of is included in the carrying amount of the business in determining the gain or loss on the sale.

Basic and Diluted Earnings Per Common Share

Basic earnings per common share data is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Common shares outstanding include common stock and restricted stock awards where recipients have satisfied the vesting terms. Diluted earnings per common share gives effect to all dilutive potential common shares outstanding during the period using the treasury stock method.

Consolidated Statement of Comprehensive Income

The Consolidated Statement of Comprehensive Income includes the amount and the related tax impact that have been reclassified from accumulated other comprehensive income to net income. The classification adjustment for unrealized loss/gain on sale of securities included in net income has been recorded through the gain on sale of investment securities line item, within noninterest income, in the Company’s Consolidated Statements of Operations.  

Reclassifications

Certain amounts reported in prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or shareholders’ equity.

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Acquisitions & Divestitures

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

ACQUISITIONS & DIVESTITURES

The acquisitions noted below have been accounted for as business combinations using the acquisition method of accounting which requires assets acquired and liabilities assumed to be recognized at fair value as of the acquisition date. Goodwill arising from the acquisitions consist largely of the synergies and economies of scale expected from combining the operations into Enterprise. None of the goodwill recognized is expected to be deductible for income tax purposes.

The following tables present the assets acquired and liabilities assumed. Additional adjustments may be recorded during the measurement period specified in ASC 805, Business Combinations, as additional information becomes known.

Acquisition of Seacoast Commerce Banc Holdings

On November 12, 2020, the Company closed its acquisition of 100% of Seacoast and its wholly-owned subsidiary, Seacoast Commerce Bank. Seacoast operated five full-service retail and commercial banking offices in California and Nevada, as well as SBA loan production offices and deposit production offices in Arizona, California, Colorado, Illinois, Indiana, Massachusetts, Michigan, Nevada, Ohio, Oregon, Texas, Utah, and Washington.

Seacoast shareholders received 0.5061 shares of EFSC common stock for each Seacoast common share and cash in lieu of any fractional shares. In connection with the merger, Enterprise issued approximately 5.0 million shares of EFSC Common Stock valued at $33.56 per share, which was the closing price of Enterprise common stock on November 12, 2020. The value of the transaction consideration was approximately $169 million. The Company recognized $4.2 million of merger-related costs recorded in noninterest expense in the statement of operations for the year ended December 31, 2020.

($ in thousands)	As Recorded by Seacoast		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	63,744	$	—		$	63,744
Loans	1,160,602		29,839		(a)	1,190,441
Other investments	12,100		—			12,100
Fixed assets	925		(275)		(b)	650
Accrued interest receivable	4,511		—			4,511
Goodwill	35,395		(35,395)		(c)	—
Intangible assets	1,513		1,168		(d)	2,681
Deferred tax assets	12,009		(8,687)		(e)	3,322
Other assets	35,025		(437)		(f)	34,588
Total assets acquired	$	1,325,824	$	(13,787)		$	1,312,037
Liabilities assumed:
Deposits	$	1,081,034	$	(28)	(f)	$	1,081,006
PPPLF advances	86,096		—			86,096
Accrued interest payable	185		—			185
Other liabilities	25,211		1,097		(f)	26,308
Total liabilities assumed	$	1,192,526	$	1,069		$	1,193,595
Net assets acquired	$	133,298	$	(14,856)		$	118,442
Consideration paid:
Cash						$	1,630
Common stock						167,035
Total consideration paid						$	168,665
Goodwill						$	50,223

(a)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Seacoast.

(b)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(c)Adjustment to eliminate goodwill.

(d)Eliminate acquired intangibles and record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(e)Adjustment for deferred taxes.

(f)Other miscellaneous fair value adjustments.

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2020 and 2019, as if the acquisition had occurred on January 1, 2019. The pro forma results combine the historical results of Seacoast with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including amortization and accretion of fair value adjustments. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2019. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2020 are included in net income in the table below. 

	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2020		2019
Total revenue (net interest income plus noninterest income)	$	381,914	$	355,500
Net income	93,918		86,888
Diluted earnings per common share	3.00		2.79

Acquisition of Trinity Capital Corporation.

On March 8, 2019, the Company closed its acquisition of 100% of Trinity and its wholly-owned subsidiary, LANB. Trinity operated six full-service retail and commercial banking offices in Los Alamos, Santa Fe, and Albuquerque, New Mexico.

Trinity shareholders received cash consideration of $1.84 per share of Trinity common stock and 0.1972 shares of EFSC common stock per share of Trinity common stock with cash in lieu of fractional shares. Aggregate consideration at closing was approximately 4.0 million shares of EFSC common stock and $37.3 million cash paid to Trinity shareholders. Based on EFSC’s closing stock price of $43.07 on March 7, 2019, the overall transaction had a value of $209.2 million. The Company recognized $18.0 million and $1.3 million of merger-related costs recorded in noninterest expense in the statement of operations for the years ended December 31, 2019 and 2018, respectively.

The following table presents the assets acquired and liabilities assumed of Trinity as of March 8, 2019.

($ in thousands)	As Recorded by Trinity		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	13,899	$	—		$	13,899
Interest-earning deposits greater than 90 days	100		—			100
Securities	428,715		(619)		(a)	428,096
Loans	705,057		(20,743)		(b)	684,314
Other real estate	5,284		(2,059)		(c)	3,225
Other investments	6,673		—			6,673
Fixed assets	27,586		(300)		(d)	27,286
Accrued interest receivable	3,997		—			3,997
Intangible assets	—		23,066		(e)	23,066
Deferred tax assets	10,708		(2,386)		(f)	8,322
Other assets	35,045		(1,484)		(g)	33,561
Total assets acquired	$	1,237,064	$	(4,525)		$	1,232,539
Liabilities assumed:
Deposits	$	1,081,151	$	36	(g)	$	1,081,187
Subordinated debentures	26,806		(3,972)		(g)	22,834
FHLB advances	6,800		171		(g)	6,971
Accrued interest payable	370		—			370
Other liabilities	5,842		(827)		(g)	5,015
Total liabilities assumed	$	1,120,969	$	(4,592)		$	1,116,377
Net assets acquired	$	116,095	$	67		$	116,162
Consideration paid:
Cash						$	37,275
Common stock						171,885
Total consideration paid						$	209,160
Goodwill						$	92,998

(a)Fair value adjustments of the securities portfolio.

(b)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Trinity.

(c)Fair value adjustment based on the Company’s evaluation of the acquired other real estate portfolio.

(d)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(e)Record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(f)Adjustment for deferred taxes.

(g)Other miscellaneous fair value adjustments.

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2019 and 2018, as if the acquisition had occurred on January 1, 2018. The pro forma results combine the historical results of Trinity with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including loan discount accretion, intangible assets amortization, and deposit and trust preferred securities premium accretion, net of taxes. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2018. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or

asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2019 are included in net income in the table below. 

	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2019		2018
Total revenue (net interest income plus noninterest income)	$	296,677	$	286,076
Net income	107,626		85,579
Diluted earnings per common share	4.11		3.14

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Earnings Per Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

The following table presents a summary of earnings per common share data and amounts for the periods indicated.

	Year ended December 31,
($ in thousands, except per share data)	2020		2019		2018
Net income	$	74,384	$	92,739	$	89,217
Weighted average common shares outstanding	26,954		26,045		23,100
Additional dilutive common stock equivalents	35		114		189
Weighted average diluted common shares outstanding	26,989		26,159		23,289
Basic earnings per common share:	$	2.76	$	3.56	$	3.86
Diluted earnings per common share:	$	2.76	$	3.55	$	3.83

For 2020 and 2019, common stock equivalents of approximately 156,000 and 21,000, respectively, were excluded from the earnings per share calculation because their effect would have been anti-dilutive. For 2018, the amount was immaterial.

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Purchased Credit Impaired ("PCI") Loans	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Purchased Credit Impaired (PCI) Loans

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Derivative Financial Instruments

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

DERIVATIVE FINANCIAL INSTRUMENTS

Risk Management Objective of Using Derivatives

The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s borrowings. The Company does not enter into derivative financial instruments for trading purposes.

Cash Flow Hedges of Interest Rate Risk

The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The Company has executed a series of cash flow hedges to fix the effective interest rate for payments due on $62.0 million of LIBOR-based junior subordinated debentures to a weighted-average-fixed rate of 2.62%. Select terms of the hedges are as follows:

$ in thousands
Notional		Fixed Rate		Maturity Date
$	15,465	2.60	%	March 15, 2024
$	14,433	2.60	%	March 30, 2024
$	18,558	2.64	%	March 15, 2026
$	13,506	2.64	%	March 17, 2026

For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are paid on the Company’s variable-rate debt. During the next twelve months, the Company estimates that an additional $1.5 million will be reclassified as an increase to interest expense. Concurrently with the repayment of $200 million of variable-rate FHLB advances in the fourth quarter of 2020, the Company terminated two interest rate swaps with a notional value of $200.0 million. A loss of $3.2 million was recognized on the termination of the swaps.

Non-designated Hedges

Derivatives not designated as hedges are not considered speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings as a component of other noninterest income.

The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Balance Sheet as of December 31, 2020 and December 31, 2019.

	Notional Amount				Derivative Assets				Derivative Liabilities
($ in thousands)	December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019
Derivatives Designated as Hedging Instruments
Interest rate swap	$	61,962	$	61,962	$	—	$	—	$	5,987	$	2,872
Derivatives not Designated as Hedging Instruments
Interest rate swap	$	1,026,016	$	749,819	$	28,703	$	11,055	$	28,980	$	11,875

The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company’s financial instruments that are subject to offsetting as of December 31, 2020 and December 31, 2019. The gross amounts of assets or liabilities can be reconciled to the tabular disclosure of fair value. The tabular disclosure of fair value provides the location that financial assets and liabilities are presented on the Balance Sheet.

As of December 31, 2020
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	28,703	$	—	$	28,703	$	2	$	—	$	28,701
Liabilities:
Interest rate swap	$	34,967	$	—	$	34,967	$	2	$	34,903	$	62
Securities sold under agreements to repurchase	271,081		—		271,081		—		271,081		—
As of December 31, 2019
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	11,055	$	—	$	11,055	$	56	$	—	$	10,999
Liabilities:
Interest rate swap	$	14,747	$	—	$	14,747	$	56	$	14,573	$	118
Securities sold under agreements to repurchase	230,886		—		230,886		—		230,886		—

As of December 31, 2020, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $35.8 million. Further, the Company has minimum collateral posting thresholds with certain of its derivative counterparties and has posted collateral of $36.5 million.

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Fixed Assets

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Fixed Assets

FIXED ASSETS

A summary of fixed assets at December 31, 2020 and 2019, is as follows:

	December 31,
($ in thousands)	2020		2019
Land	$	13,389	$	14,079
Buildings and leasehold improvements	53,007		54,838
Furniture, fixtures and equipment	16,560		15,178
Capitalized software	1,373		1,373
	84,329		85,468
Less accumulated depreciation and amortization	31,160		25,455
Total fixed assets	$	53,169	$	60,013

Depreciation and amortization of fixed assets included in noninterest expense amounted to $6.2 million, $5.7 million, and $3.5 million in 2020, 2019, and 2018, respectively.

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Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

The table below presents a summary of goodwill:

($ in thousands)	Years ended December 31,
	2020		2019
Goodwill, beginning of year	$	210,344	$	117,345
Additions from acquisition	50,223		92,999
Goodwill, end of year	$	260,567	$	210,344

The table below presents a summary of intangible assets:

($ in thousands)	Years ended December 31,
	2020		2019
Core deposit intangible, net, beginning of year	$	26,076	$	8,553
Additions from acquisition	2,681		23,066
Amortization	(5,673)		(5,543)
Core deposit intangible, net, end of year	$	23,084	$	26,076

Amortization expense on the core deposit intangibles was $5.7 million, $5.5 million, and $2.5 million for the years ended December 31, 2020, 2019, and 2018, respectively. The core deposit intangibles are being amortized over a 10-year period.

The following table reflects the amortization schedule for the core deposit intangible at December 31, 2020.

Year	Core Deposit Intangible ($ in thousands)
2021	$	5,295
2022	4,517
2023	3,840
2024	3,162
2025	2,485
After 2025	3,785
	$	23,084

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Deposits

12 Months Ended

Dec. 31, 2020

Maturities of Time Deposits [Abstract]

Maturity of Certificates of Deposit

DEPOSITS

Following is a summary of certificates of deposit maturities at December 31, 2020:

($ in thousands)	Brokered		Customer		Total
Less than 1 year	$	—	$	384,529	$	384,529
Greater than 1 year and less than 2 years	—		75,484		75,484
Greater than 2 years and less than 3 years	25,069		12,663		37,732
Greater than 3 years and less than 4 years	25,140		17,587		42,727
Greater than 4 years and less than 5 years	—		4,043		4,043
Greater than 5 years	—		5,580		5,580
	$	50,209	$	499,886	$	550,095

Certificates of deposit balances over the FDIC insurance limit of $250,000 were $169.5 million as of December 31, 2020.

Following is a summary of activity for the year ended December 31, 2020, for deposit accounts of executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director.

($ in thousands)	December 31, 2020
Balance at beginning of year	$	9,763
Deposits	2,441
Withdrawals	(4,961)
Balance at end of year	$	7,243

The Company is a participant in the Promontory Interfinancial Network, a network that offers deposit placement services such as CDARS and ICS, which offer products that qualify large deposits for FDIC insurance. At December 31, 2020, the Company had $7.3 million of CDARS deposits and $71.7 million of ICS deposits. At December 31, 2020 and 2019, overdraft deposits of $1.0 million and $2.1 million, respectively, were reclassified to loans.

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Subordinated Debentures

12 Months Ended

Dec. 31, 2020

Subordinated Borrowings [Abstract]

Subordinated Debentures

SUBORDINATED DEBENTURES

The amounts and terms of each issuance of the Company’s subordinated debentures at December 31, 2020 and 2019 were as follows:

	Amount				Maturity Date	Initial Call Date (1)	Interest Rate
($ in thousands)	2020		2019
EFSC Clayco Statutory Trust I	$	3,196	$	3,196	December 17, 2033	December 17, 2008	Floats @ 3MO LIBOR + 2.85%
EFSC Capital Trust II	5,155		5,155		June 17, 2034	June 17, 2009	Floats @ 3MO LIBOR + 2.65%
EFSC Statutory Trust III	11,341		11,341		December 15, 2034	December 15, 2009	Floats @ 3MO LIBOR + 1.97%
EFSC Clayco Statutory Trust II	4,124		4,124		September 15, 2035	September 15, 2010	Floats @ 3MO LIBOR + 1.83%
EFSC Statutory Trust IV	10,310		10,310		December 15, 2035	December 15, 2010	Floats @ 3MO LIBOR + 1.44%
EFSC Statutory Trust V	4,124		4,124		September 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VI	14,433		14,433		March 30, 2037	March 30, 2012	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VII	4,124		4,124		December 15, 2037	December 15, 2012	Floats @ 3MO LIBOR + 2.25%
JEFFCO Stat Trust I (2)	7,752		7,886		February 22, 2031	February 22, 2011	Fixed @ 10.20%
JEFFCO Stat Trust II (2)	4,443		4,388		March 17, 2034	March 17, 2009	Floats @ 3MO LIBOR + 2.75%
Trinity Capital Trust III (2)	5,272		5,206		September 8, 2034	September 8, 2009	Floats @ 3MO LIBOR + 2.70%
Trinity Capital Trust IV	10,310		10,302		November 23, 2035	August 23, 2010	Fixed @ 6.88%
Trinity Capital Trust V (2)	7,706		7,543		December 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.65%
Total junior subordinated debentures	92,290		92,132
5.75% Fixed-to-floating rate subordinated notes	63,250		—		June 1, 2030	June 1, 2025	Fixed @ 5.75% until June 1, 2025, then floats @ Benchmark rate (3 month term SOFR) + 5.66%
4.75% Fixed-to-floating rate subordinated notes	50,000		50,000		November 1, 2026	November 1, 2021	Fixed @ 4.75% until November 1, 2021, then floats @ 3MO LIBOR + 3.387%
Debt issuance costs	(1,903)		(874)
Total fixed-to-floating rate subordinated notes	111,347		49,126
Total subordinated debentures and notes	$	203,637	$	141,258
(1) Callable each quarter after initial call date.
(2) Purchase accounting adjustments are reflected in the balance and also impact the effective interest rate.

The Company has 13 unconsolidated statutory business trusts. These trusts issued preferred securities that were sold to third parties. The sole purpose of the trusts was to invest the proceeds in junior subordinated debentures of the Company that have terms identical to the trust preferred securities. The subordinated debentures, which are the sole assets of the trusts, are subordinate and junior in right of payment to all present and future senior and subordinated indebtedness and certain other financial conditions of the Company. The Company fully and unconditionally guarantees each trust’s securities obligations. Under current regulations, the trust preferred securities are included in tier 1 capital for regulatory capital purposes, subject to certain limitations.

The trust preferred securities are redeemable in whole or in part on or after their respective call dates. Mandatory redemption dates may be shortened if certain conditions are met. The securities are classified as subordinated debentures in the Company’s consolidated balance sheets. Interest on the subordinated debentures held by the trusts is recorded as interest expense in the Company’s consolidated statements of operations. The Company’s investment of $2.9 million at December 31, 2020, in these trusts is included in other investments in the consolidated balance sheets. The Company has fixed the interest rate on a portion of its junior subordinated debentures through a series of interest rate swaps. For further discussion of the interest rate swaps and the corresponding terms, see “Note 7 - Derivative Financial Instruments.”

On November 1, 2016, the Company issued $50 million of fixed-to-floating rate subordinated notes. The notes initially bear a fixed annual interest rate of 4.75%, with interest payable semiannually in arrears on May 1 and November 1 of each year, commencing May 1, 2017. Commencing November 1, 2021, the interest rate on the notes resets quarterly to the three-month LIBOR rate plus a spread of 338.7 basis points, payable quarterly in arrears. On or after November 1, 2021, the Company will have the option to redeem the notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the subordinated notes to be redeemed plus accrued interest, subject to applicable regulatory approval. The Company’s obligation to make payments of principal and interest on the notes is subordinate and junior in right of payment to all of its senior debt. Current regulatory guidance allows for this subordinated debt to be treated as tier 2 regulatory capital for the first five years of its term, subject to certain limitations, and then phased out of tier 2 capital pro rata over the next five years.

On May 21, 2020, EFSC issued $63.3 million of 5.75% fixed-to-floating rate subordinated notes due in 2030 in a public offering (the “2030 Notes”). From and including the date of issuance to, but excluding, June 1, 2025, the 2030 Notes will bear interest at a rate equal to 5.75% per annum, payable semiannually in arrears on each June 1 and December 1. From and including June 1, 2025 to, but excluding, the maturity date or the date of earlier redemption, the 2030 Notes will bear interest at a floating rate per annum equal to a benchmark rate (which is expected to be three-month term SOFR (as defined in the Indenture, dated May 21, 2020, between EFSC and U.S. Bank National Association, as trustee, and subsequent First Supplemental Indenture)), plus 566.0 basis points, payable quarterly in arrears on March 1, June 1, September 1 and December 1 of each year, commencing on September 1, 2025. Notwithstanding the foregoing, in the event that the benchmark rate is less than zero, then the benchmark rate shall be deemed to be zero.

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Federal Home Loan Bank Advances

12 Months Ended

Dec. 31, 2020

Investments in and Advances to Affiliates, Schedule of Investments [Abstract]

Federal Home Loan Bank Advances

FEDERAL HOME LOAN BANK ADVANCES

FHLB advances are collateralized by 1-4 family residential real estate loans, business loans, and certain commercial real estate loans. At December 31, 2020 and 2019, the carrying value of the loans pledged to the FHLB of Des Moines was $1.4 billion and $1.6 billion, respectively. The secured line of credit had availability of approximately $739.1 million at December 31, 2020.

The following table summarizes the type, maturity, and rate of the Company’s FHLB advances at December 31:

		2020				2019
($ in thousands)	Term	Outstanding Balance		Weighted Rate		Outstanding Balance		Weighted Rate
Non-amortizing fixed advance	Less than 1 year	$	—	—	%	$	170,000	1.73	%
Non-amortizing fixed advance	Greater than 1 year	50,000		1.56	%	52,406		1.62	%
Total FHLB advances		$	50,000	1.56	%	$	222,406	1.70	%

In August 2019, the Company entered into agreements totaling $50 million for convertible advances with a weighted average rate of 1.56% that mature in 2024 and are currently puttable by the FHLB.

At December 31, 2020, the Company used $6.0 million of collateral value to secure confirming letters of credit for public unit deposits and industrial development bonds.

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Other Borrowings and Notes Payable

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Other Borrowings and Notes Payable

OTHER BORROWINGS AND NOTES PAYABLE

Securities Sold Under Agreement to Repurchase

The Company enters into sales of securities under agreements to repurchase. The agreements are transacted with deposit customers and are utilized as an overnight investment product. The amounts received under these agreements represent short-term borrowings and are reflected as a liability in the consolidated balance sheets. The securities underlying these agreements are included in investment securities in the Consolidated Balance Sheets. The Company has no control over the market value of the securities, which fluctuates due to market conditions.

However, the Company is obligated to promptly transfer additional securities if the market value of the securities falls below the repurchase agreement price. The Company manages this risk by maintaining an unpledged securities portfolio that it believes is sufficient to cover a decline in the market value of the securities sold under agreements to repurchase.

A summary of securities sold under agreements to repurchase is as follows:

	December 31,
($ in thousands)	2020			2019
Securities sold under agreement to repurchase	$	271,081		$	230,886
Average balance during the year	206,338			169,179
Maximum balance outstanding at any month-end	271,081			230,886
Average interest rate during the year	0.23		%	0.69		%
Average interest rate at December 31	0.07		%	0.91		%

Federal Reserve Line

The Bank also has a line with the Federal Reserve Bank of St. Louis which provides additional liquidity to the Company. As of December 31, 2020, $0.9 billion was available under this line. This line is secured by a pledge of certain eligible loans aggregating $1.1 billion. There were no amounts drawn on the Federal Reserve line of credit as of December 31, 2020.

Federal Reserve PPPLF

The Company acquired $86.1 million of Federal Reserve PPPLF funds from the Seacoast acquisition which were subsequently paid off in November 2020.

Revolving Credit Line

In February 2016, the Company entered into a senior unsecured revolving credit agreement (the “Revolving Agreement”) with another bank. The Revolving Agreement has a one-year term, maturing on February 22, 2021. It is in process of renewal and allows for borrowings up to $25 million. The interest rate is the one-month LIBOR plus 125 basis points. The proceeds can be used for general corporate purposes. The Revolving Agreement is subject to ongoing compliance with a number of customary affirmative and negative covenants as well as specified financial covenants. 

A summary of the amounts drawn on the Revolving Agreement is as follows:

	December 31,
($ in thousands)	2019
Outstanding balance	$	—
Average balance during the year	323
Maximum balance outstanding at any month-end	2,000
Weighted average interest rate during the year	4.61		%
Average interest rate at December 31	—

The revolving credit line was not accessed in 2020.

Term Loan

In February 2019, the Company entered into a five year, $40.0 million unsecured term loan agreement (the “Term Loan”) with another bank with the proceeds primarily used to fund the company’s cash portion of the acquisition of Trinity. The interest rate is the one-month LIBOR plus 125 basis points.

A summary of the Term Loan is as follows:

	December 31,
($ in thousands)	2020			2019
Term Loan	$	30,000		$	34,286
Average balance during the year	32,123			30,810
Maximum balance outstanding at any month-end	34,286			40,000
Weighted average interest rate during the year	1.96		%	3.55		%
Average interest rate at December 31	1.44		%	3.00		%

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Litigation and Other Contingencies	12 Months Ended
	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Litigation and Other Contingencies	LITIGATION AND OTHER CONTINGENCIES The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Management believes there are no such legal proceedings pending or threatened against the Company or its subsidiaries in the ordinary course of business, directly, indirectly, or in the aggregate that, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.

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Regulatory Matters

12 Months Ended

Dec. 31, 2020

Regulated Operations [Abstract]

Regulatory Matters

REGULATORY CAPITAL

Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum ratios (set forth in the following table) of total, tier 1, and common equity tier 1 capital to risk-weighted assets, and of tier 1 capital to average assets. Management believes, as of December 31, 2020 and 2019, that the Company met all capital adequacy requirements to which it is subject.

As of December 31, 2020 and 2019, the Bank was categorized as “well-capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well-capitalized” the Bank must maintain minimum total risk-based capital, tier 1 risk-based capital, common equity tier 1 risk-based capital, and tier 1 leverage ratios as set forth in the table. In addition, the Company must maintain an additional CCB above the regulatory minimum ratio requirements. The CCB is designed to insulate banks from periods of stress and impose constraints on dividends, share repurchases and discretionary bonus payments when capital levels fall below prescribed levels.

The capital ratios are presented in the table below:

	December 31, 2020				December 31, 2019
	EFSC		Bank		EFSC		Bank		To Be Well-Capitalized		Minimum Ratio with CCB
Common Equity Tier 1 Capital to Risk Weighted Assets	10.9	%	12.5	%	9.9	%	11.7	%	6.5	%	7.0	%
Tier 1 Capital to Risk Weighted Assets	12.1	%	12.5	%	11.4	%	11.7	%	8.0	%	8.5	%
Total Capital to Risk Weighted Assets	14.9	%	13.7	%	12.9	%	12.4	%	10.0	%	10.5	%
Leverage Ratio (Tier 1 Capital to Average Assets)	10.0	%	10.3	%	10.1	%	10.3	%	5.0	%	4.0	%

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Compensation Plans

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Compensation Plans

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS

Shareholders’ Equity

Common Stock

At December 31, 2020 and 2019, the Company has reserved the following shares of its authorized but unissued common stock for possible future issuance in connection with the following:

	December 31, 2020	December 31, 2019
Outstanding performance units (maximum issuance)	125,176	73,172
Outstanding RSU’s	157,428	117,369
Outstanding options and appreciation rights	—	28,300
2018 Stock Incentive Plan	339,691	521,573
Non-Management Director Plan	86,616	96,031
2018 Employee Stock Purchase Plan	635,890	694,085
Total	1,344,801	1,530,530

Common Stock Repurchase Plan

In May 2015, the Company’s board of directors authorized the repurchase of up to two million shares of the Company’s common stock. The repurchases may be made in open market or privately negotiated transactions and the stock repurchase program will remain in effect until fully utilized or until modified, superseded or terminated. At December 31, 2020, there were 95,907 shares available for repurchase under the plan.

Preferred Stock

The Company has 5,000,000 shares of authorized preferred stock with a par value of $0.01. The Board of Directors has the right to set for each series of preferred stock, subject to the laws of the State of Delaware, the dividend rate, conversion and redemption terms, voting rights and liquidation preferences, among others. At December 31, 2020 and 2019 there were no shares of preferred stock outstanding.

Dividends

The Company’s ability to pay dividends to its shareholders is generally dependent upon the payment of dividends by the Bank to the parent company. The Bank cannot pay dividends to the extent it would be deemed undercapitalized by the FDIC after making such dividend.

Dividends on the Company’s capital stock are prohibited under the terms of the junior subordinated debenture agreements, see “Note 11 - Subordinated Debentures,” if the Company is in continuous default on its payment obligations to the capital trusts, has elected to defer interest payments on the debentures or extends the interest payment period. At December 31, 2020, the Company was not in default on any of the junior subordinated debenture issuances.

Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in accumulated other comprehensive income (loss) after-tax by component:

($ in thousands)	Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities		Unamortized Gain (Loss) on Held-to-Maturity Securities		Net Unrealized Loss on Cash Flow Hedges		Total
Balance, December 31, 2017	$	(3,622)	$	(196)	$	—	$	(3,818)
Net change	(4,633)		3		—		(4,630)
Adjustment for change in accounting policies	(792)		(42)		—		(834)
Balance, December 31, 2018	(9,047)		(235)		—		(9,282)
Net change	29,226		(33)		(2,162)		27,031
Transfer from available-for-sale to held-to-maturity	(5,202)		5,202		—		—
Balance, December 31, 2019	14,977		4,934		(2,162)		17,749
Net change	23,627		(1,910)		(2,346)		19,371
Transfer from available-for-sale to held-to-maturity	(16,284)		16,284		—		—
Balance, December 31, 2020	$	22,320	$	19,308	$	(4,508)	$	37,120

The following table presents the pre-tax and after-tax changes in the components of other comprehensive income:

	2020						2019						2018
($ in thousands)	Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax
Change in unrealized gain (loss) on available-for-sale debt securities	$	31,798	$	7,854	$	23,944	$	38,764	$	9,575	$	29,189	$	(6,143)	$	(1,517)	$	(4,626)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities(a)	(421)		(104)		(317)		49		12		37		(9)		(2)		(7)
Reclassification of (gain) loss on held-to-maturity securities(b)	(2,537)		(627)		(1,910)		(44)		(11)		(33)		4		1		3
Change in unrealized loss on cash flow hedges arising during the period(b)	(7,898)		(1,951)		(5,947)		(3,004)		(742)		(2,262)		—		—		—
Reclassification of loss on cash flow hedges(b)	4,782		1,181		3,601		133		33		100		—		—		—
Total other comprehensive income (loss)	$	25,724	$	6,353	$	19,371	$	35,898	$	8,867	$	27,031	$	(6,148)	$	(1,518)	$	(4,630)

(a)The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations.

(b)The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations, except for a $3.2 million termination fee in 2020 recognized in noninterest expense.

Compensation Plans

The Company has adopted share-based compensation plans to reward and provide long-term incentive for directors and key employees of the Company including its subsidiaries. These plans provide for the granting of stock, stock options, stock-settled stock appreciation rights (“SSARs”), and restricted stock units (“RSUs”), and may contain performance terms as designated by the Company’s Board of Directors upon the recommendation of the Compensation Committee of the Board. The Company uses authorized and unissued shares to satisfy share award exercises.

The total excess income tax benefit for share-based compensation arrangements was $0.2 million, $0.5 million, and $1.6 million for the years ended December 31, 2020, 2019, and 2018, respectively. At December 31, 2020, there was $5.0 million of total unrecognized compensation cost related to unvested share-based compensation awards. The cost is expected to be recognized over a weighted-average period of 2 years.

The following table summarizes share-based compensation expense:

($ in thousands)	2020		2019		2018
Performance stock units	$	1,097	$	1,699	$	2,067
Restricted stock units	2,613		1,969		1,211
Employee stock purchase plan	468		364		174
Total share-based compensation expense	$	4,178	$	4,032	$	3,452

Performance Units

The Company has entered into long-term incentive agreements with certain key employees. These awards are conditioned on certain performance criteria and market criteria measured against a group of peer banks over a three-year period for each grant. The awards contain minimum (threshold), target, and maximum (exceptional) performance levels. In the event of a change in control, as defined in the plan, the awards will vest at a minimum of the target level. The amount of the awards is determined at the end of the three year vesting and performance period. In January 2021, the Company awarded 23,251 shares to employees upon completion of the 2018-2020 performance cycle. In January 2020, the Company awarded 62,649 shares to employees upon completion of the 2017-2019 performance cycle. In January 2019, the Company awarded 99,308 shares to employees upon completion of the 2016-2018 performance cycle.

Information related to the outstanding grants at December 31, 2020 is shown below:

($ in thousands)	2019 - 2021 Cycle		2020 - 2022 Cycle
Shares issuable at target	20,860		26,002
Maximum shares issuable	41,720		52,004
Unrecognized compensation cost	$	366	$	704
Weighted average grant date fair value	47.46		38.09

Restricted Stock Units

The Company awards nonvested stock, in the form of RSUs to employees. RSUs generally are subject to continued employment and generally vest ratably over two to five years. Shares issued to the Bank’s directors for compensation are not subject to vesting requirements. Vesting is accelerated upon a change in control or the employee meeting certain retirement criteria. RSUs do not carry voting or dividend rights until vested. Sales of the units are restricted prior to vesting. Various information related to the RSUs is shown below.

($ in thousands)	2020		2019		2018
Total fair value at vesting date	$	1,702	$	1,067	$	1,544
Total unrecognized compensation cost for nonvested stock units	3,899		3,417		2,175
Expected years to recognize unearned compensation	1.9 years		1.9 years		2.0 years

A summary of the status of the Company’s RSU awards as of December 31, 2020 and changes during the year then ended is presented below

	Shares	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	117,369	$	45.86
Granted	88,759	39.63
Vested	(44,351)	45.68
Forfeited	(4,349)	44.24
Outstanding at December 31, 2020	157,428	$	42.44

Employee Stock Options and Stock-settled Stock Appreciation Rights

In determining compensation cost for stock options and SSARs, the Black-Scholes option-pricing model is used to estimate the fair value on date of grant. There were no grants of employee stock options or SSARs during the years ended December 31, 2020, 2019, or 2018.

Stock options have been granted to key employees with exercise prices equal to the market price of the Company’s common stock at the date of grant and 10-year contractual terms. Stock options have a vesting schedule of three to five years. The SSARs are subject to continued employment, have a 10-year contractual term and vest ratably over five years. Neither stock options nor SSARs carry voting or dividend rights until exercised. At December 31, 2020, there was no remaining unrecognized compensation expense related to stock options and SSARs and all outstanding awards are vested. Various information related to the stock options and SSARs is shown below.

($ in thousands)	2020		2019		2018
Intrinsic value of option/SSAR exercises on date of exercise	$	597	$	407	$	2,469

Following is a summary of the SSAR activity for 2020.

($ in thousands, except per share data)	Shares	Weighted Average Exercise Price
Outstanding at December 31, 2019	28,300	$	10.14
Exercised	(28,300)	10.14
Outstanding at December 31, 2020	—	N/A

Employee Stock Purchase Plan

The Company adopted an Employee Stock Purchase Plan (“ESPP”) in 2018 to provide its eligible employees with an opportunity to purchase common stock through accumulated contributions. The ESPP provides for shares to be

purchased at 85% of the lesser of the stock price at the enrollment date or the exercise date. The maximum number of shares of common stock available for sale under the ESPP is 750,000. In 2020, 2019, and 2018, employees purchased 58,195, 41,116, and 14,799 shares, respectively.

Stock Plan for Non-Management Directors

The Company has adopted a Stock Plan for Non-Management Directors, which provides for issuing up to 200,000 shares of common stock to non-management directors as compensation in lieu of cash. At December 31, 2020, there were 80,130 shares of stock available for grant under the Stock Plan for Non-Management Directors, exclusive of 6,486 shares to be issued upon deferral release.

Various information related to the Director Plan is shown below.

	2020		2019		2018
Shares granted	15,901		11,382		11,750
Weighted average fair value	$	30.28	$	41.63	$	50.74

401(k) Plan

The Company has a 401(k) savings plan which covers substantially all full-time employees over the age of 21 and matches 100% of the first 6% of employee contributions. The amount charged to expense for the Company’s contributions to the plan was $3.8 million, $3.2 million and $2.8 million for 2020, 2019, and 2018, respectively.

Deferred Compensation Plan

The Company’s Deferred Compensation Plan permits certain executives to participate and defer up to 25% of their base salary and/or up to 100% of their eligible bonus for a plan year. Participants make an irrevocable election when they elect to participate for a plan year to receive the vested account balance following their retirement date, or at a future date not less than five years after the beginning of the plan year. At December 31, 2020, the Company had assets and liabilities of $3.6 million and $4.9 million, respectively, related to the Deferred Compensation Plan.

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Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The components of income tax expense for the years ended December 31, are as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Current:
Federal	$	25,132	$	15,470	$	9,621
State and local	5,009		2,027		2,432
Total current	30,141		17,497		12,053
Deferred:
Federal	(10,651)		4,262		2,812
State and local	(1,927)		1,538		495
Total deferred	(12,578)		5,800		3,307
Total income tax expense	$	17,563	$	23,297	$	15,360

A reconciliation of expected income tax expense, computed by applying the statutory federal income tax rate in 2020, 2019, and 2018 to income before income taxes and the amounts reflected in the consolidated statements of operations is as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income tax expense at statutory rate	$	19,309	$	24,368	$	21,961
Increase (reduction) in income tax resulting from:
Tax-exempt interest income, net	(2,010)		(962)		(506)
State and local income taxes, net	3,254		2,816		2,423
Bank-owned life insurance, net	(778)		(628)		(452)
Non-deductible expenses	637		749		294
Tax benefit (expense) of LIHTC investments, net	(444)		(278)		(50)
Excess tax benefits	(175)		(526)		(1,631)
Federal tax credits	(1,327)		(913)		(4,627)
Subsidiary dividend timing election	—		—		(2,728)
Non-taxable donation to charitable foundation	—		(420)		—
Other, net	(903)		(909)		676
Total income tax expense	$	17,563	$	23,297	$	15,360

The net amount recognized as a component of tax expense for tax credits, other tax benefits, and amortization from low-income housing tax credit (“LIHTC”) investments recognized per the table above was $0.4 million for the year ended December 31, 2020. The net amount recognized as a benefit component of income tax expense per the table above was $0.3 million for the year ended December 31, 2019, and $0.1 million for the year ended December 31, 2018. As of December 31, 2020 and 2019, the carrying value of the investments related to low-income housing tax credits was $4.2 million and $4.0 million, respectively. No impairment losses have been recognized from forfeiture or ineligibility of tax credits or other circumstances during the life of any of the investments.

A net deferred income tax asset of $29.8 million and $14.4 million is included in other assets in the consolidated balance sheets at December 31, 2020 and 2019, respectively. The tax effect of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities is as follows:

	Year ended December 31,
($ in thousands)	2020		2019
Deferred tax assets:
Allowance for loan losses	$	34,031	$	10,692
Acquired loans	—		9,722
Loans held-for-sale	8,058		—
Other real estate	896		657
Deferred compensation	2,585		2,462
Accrued compensation	5,391		1,607
Net operating losses and tax credits	6,460		7,066
Other deferred tax assets	3,086		791
Total deferred tax assets	60,507		32,997
Deferred tax liabilities:
Acquired loans	3,413		—
Unrealized gains on securities	12,189		5,847
Intangible assets	7,800		7,432
Other deferred tax liabilities	4,369		2,407
Total deferred tax liabilities	27,771		15,686
Net deferred tax asset before valuation allowance	32,736		17,311
Less: valuation allowance	2,932		2,932
Net deferred tax asset	$	29,804	$	14,379

As part of the Trinity Capital Corporation acquisition in 2019, the company acquired net operating loss, tax credit, and capital loss deferred tax assets. Net operating losses originated in the years 2012, 2014-2017, and 2019 and will expire in the years between 2032-2037. Tax credit carryforwards originated in years 2010-2015 and will expire in the years between 2030-3035. Capital losses originated in 2015, 2016, & 2018 and will expire in the years between 2021-2023.

A valuation allowance is provided on deferred tax assets when it is more likely than not that some portion of the assets will not be realized. In 2019, as part of the Trinity Capital Corporation acquisition, the company acquired net operating loss, tax credit, and capital loss deferred tax assets. The company determined that it was more likely than not that some of the assets would not be realized. As such, the company recorded a $2.9 million valuation allowance as of December 31, 2020 and 2019.

The Company and its subsidiaries file income tax returns in the federal jurisdiction and in twenty-nine states. The Company is no longer subject to federal, state or local income tax audits by tax authorities for years before 2017, with the exception of 2016 being an open year by one state taxing authority. Net operating losses generated prior to 2016 that are utilized going forward would still be subject to examination.

As of December 31, 2020, the gross amount of unrecognized tax benefits was $3.2 million and the total amount of net unrecognized tax benefits that would impact the effective tax rate, if recognized, was $3.1 million. As of December 31, 2019 and 2018, the total amount of the net unrecognized tax benefits that would impact the effective tax rate, if recognized, was $1.1 million and $0.9 million, respectively. The Company believes it is reasonably possible that the gross amount of unrecognized benefits will be reduced by approximately $0.3 million as a result of a lapse of statute of limitations in the next 12 months.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense and classifies such interest and penalties in the liability for unrecognized tax benefits. The amount accrued for interest and penalties was $0.9 million as of December 31, 2020, and was not significant for 2019 and 2018.

The activity in the gross liability for unrecognized tax benefits was as follows:

($ in thousands)	2020		2019		2018
Balance at beginning of year	$	1,497	$	1,301	$	1,244
Additions based on tax positions related to the current year	395		401		367
Additions for tax positions of prior years	1,556		62		50
Settlements or lapse of statute of limitations	(291)		(267)		(360)
Balance at end of year	$	3,157	$	1,497	$	1,301

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Commitments

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments

COMMITMENTS

Long-term Lease Commitments

See “Note 6 – Leases” in this report for information regarding the Company’s long-term lease commitments.

Off-balance-Sheet Commitments

The Company issues financial instruments in the normal course of the business of meeting the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets.

The Company’s extent of involvement and maximum potential exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is not more than the contractual amount of these instruments.

The Company uses the same credit policies in making commitments and conditional obligations as it does for financial instruments included on its consolidated balance sheets.

The contractual amounts of off-balance-sheet financial instruments as of December 31, 2020, and December 31, 2019, are as follows: 

(in thousands)	December 31, 2020		December 31, 2019
Commitments to extend credit	$	1,946,068	$	1,469,413
Letters of credit	50,971		47,969
State tax credits	24,473		28,035
Low-income housing tax credits	—		704
Limited partnership commitments	23,400		20,829

There was an insignificant amount of unadvanced commitments on impaired loans at December 31, 2020 and December 31, 2019. Other liabilities include approximately $5.7 million for estimated losses attributable to unadvanced commitments at December 31, 2020.

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments usually have fixed expiration dates or other termination clauses, may have significant usage restrictions, and may require payment of a fee. Of the total commitments to extend credit at December 31, 2020, and December 31, 2019, $160.6 million and $144.8 million, respectively, represent fixed rate loan commitments. Since certain of the commitments may expire without being drawn upon or may be revoked, the total commitment amounts do not necessarily represent future cash obligations. The Company evaluates each

customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. Collateral held varies, but may include accounts receivable, inventory, premises and equipment, and real estate.

Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are issued to support contractual obligations of the Company’s customers. The credit risk involved in issuing letters of credit is essentially the same as the risk involved in extending loans to customers. The approximate remaining term of letters of credit range from 1 month to 4 years at December 31, 2020.

The Company also has off-balance sheet commitments for purchases of state tax credits, low-income housing tax credits, and commitments for various capital raises for SBICs.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The fair value of an asset or liability is the exchange price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820, Fair Value Measurements and Disclosures, establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

•Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

•Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.

Fair value on a recurring basis

The following table summarizes financial instruments measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value.

	December 31, 2020
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	15,161	$	—	$	15,161
Obligations of states and political subdivisions	—		344,232		—		344,232
Residential mortgage-backed securities	—		526,572		—		526,572
Corporate debt securities	—		14,998		—		14,998
U.S. Treasury Bills	—		11,466		—		11,466
Total securities available-for-sale	—		912,429		—		912,429
Derivative financial instruments	—		28,703		—		28,703
Total assets	$	—	$	941,132	$	—	$	941,132
Liabilities
Derivative financial instruments	$	—	$	34,967	$	—	$	34,967
Total liabilities	$	—	$	34,967	$	—	$	34,967

	December 31, 2019
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	10,046	$	—	$	10,046
Obligations of states and political subdivisions	—		213,024		—		213,024
Residential mortgage-backed securities	—		902,021		—		902,021
U.S. Treasury Bills	—		10,226		—		10,226
Total securities available-for-sale	—		1,135,317		—		1,135,317
Other investments	—		—		—		—
Derivative financial instruments	—		11,055		—		11,055
Total assets	$	—	$	1,146,372	$	—	$	1,146,372
Liabilities
Derivative financial instruments	$	—	$	14,747	$	—	$	14,747
Total liabilities	$	—	$	14,747	$	—	$	14,747

•Securities available-for-sale. Securities classified as available-for-sale are reported at fair value utilizing Level 2 and Level 3 inputs. Fair values for Level 2 securities are based upon dealer quotes, market spreads, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions at the security level. Changes in fair value are recognized through accumulated other comprehensive income.

•Derivatives. Derivatives are reported at fair value utilizing Level 2 inputs. The Company obtains counterparty quotations to value its interest rate swaps and caps. In addition, the Company validates the counterparty quotations with third party valuation sources. Derivatives with negative fair values are

included in Other liabilities in the consolidated balance sheets. Derivatives with positive fair value are included in Other assets in the consolidated balance sheets. Changes in the fair value of client-related derivative instruments are recognized through net income. For the years ended December 31, 2020 and 2019, the gains and losses offset each other due to the Company’s hedging of the client swaps with other bank counterparties.

Fair value on a non-recurring basis

Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).

•Impaired loans. Impaired loans are included as Portfolio loans on the Company’s consolidated balance sheets with amounts specifically reserved for credit impairment in the Allowance for loan losses. On a quarterly basis, fair value adjustments are recorded on impaired loans to account for (1) partial write-downs that are based on the current appraised or market-quoted value of the underlying collateral or (2) the full charge-off of the loan carrying value. In some cases, the properties for which market quotes or appraised values have been obtained are located in areas where comparable sales data is limited, outdated, or unavailable. In addition, the Company may adjust the valuations based on other relevant market conditions or information. Accordingly, fair value estimates, including those obtained from real estate brokers or other third-party consultants, for collateral-dependent impaired loans are classified in Level 3 of the valuation hierarchy.

•Other Real Estate. These assets are reported at the lower of the loan carrying amount at foreclosure or fair value. Fair value is based on third party appraisals of each property and the Company’s judgment of other relevant market conditions. These are considered Level 3 inputs.

The following table presents financial instruments and non-financial assets measured at fair value on a non-recurring basis as of December 31, 2020 and 2019. 

	December 31, 2020
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2020
Impaired loans	$	1,247	$	—	$	—	$	1,247	$	4,486
Other real estate	3,600		—		—		3,600		1,000
Total	$	4,847	$	—	$	—	$	4,847	$	5,486

	December 31, 2019
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2019
Impaired loans	$	2,506	$	—	$	—	$	2,506	$	2,687
Total	$	7,450	$	—	$	—	$	7,450	$	2,687

(1) The amounts represent balances measured at fair value during the period and still held as of the reporting date.

Impaired loans are reported at the fair value of the underlying collateral. Fair values for impaired loans are obtained from current appraisals by qualified licensed appraisers or independent valuation specialists. Other real estate owned is adjusted to fair value upon foreclosure of the underlying loan. Subsequently, foreclosed assets are carried

at the lower of carrying value or fair value less costs to sell. Fair value of other real estate is based upon the current appraised values of the properties as determined by qualified licensed appraisers and the Company’s judgment of other relevant market conditions.

Carrying amount and fair value at December 31, 2020 and 2019

Following is a summary of the carrying amounts and fair values of the Company’s financial instruments on the consolidated balance sheets at December 31, 2020 and 2019. This summary excludes certain financial assets and liabilities for which carrying value approximates fair value and financial instruments that are recorded at fair value on a recurring basis disclosed above. Financial instruments for which carrying values approximate fair value include cash and due from banks, federal funds sold, interest bearing deposits, accrued interest receivable/payable, demand, savings and money market deposits.

	December 31, 2020					December 31, 2019
($ in thousands)	Carrying Amount		Estimated fair value		Level	Carrying Amount		Estimated fair value		Level
Balance sheet assets
Securities held-to-maturity	$	487,610	$	501,523	Level 2	$	181,166	$	181,939	Level 2
Other investments	48,764		48,764		Level 2	38,044		38,044		Level 2
Loans held-for-sale	13,564		13,564		Level 2	5,570		5,570		Level 2
Loans, net	7,088,264		7,067,562		Level 3	5,271,049		5,205,651		Level 3
State tax credits, held-for-sale	36,853		39,925		Level 3	36,802		39,046		Level 3
Balance sheet liabilities
Certificates of deposit	$	550,095	$	553,946	Level 3	$	826,447	$	825,203	Level 3
Subordinated debentures and notes	203,637		192,889		Level 2	141,258		130,985		Level 2
FHLB advances	50,000		51,871		Level 2	222,406		221,402		Level 2
Other borrowings	301,081		301,081		Level 2	265,172		265,172		Level 2

Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates are subjective in nature and involve uncertainties and matters of significant judgment, and therefore, cannot be determined with precision. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. We adjust such estimates and assumptions when facts and circumstances dictate. Decreasing real estate values, illiquid credit markets, volatile equity markets, and declines in consumer spending have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment will be reflected in the financial statement in future periods. In addition, these estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Fair value estimates are based on existing on-balance and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on fair value estimates and have not been considered in many of the estimates.

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Parent Company Only Condensed Financial Statements

12 Months Ended

Dec. 31, 2020

Condensed Financial Information Disclosure [Abstract]

Parent Company Only Condensed Financial Statements

PARENT COMPANY ONLY CONDENSED FINANCIAL STATEMENTS

Condensed Balance Sheets

	December 31,
($ in thousands)	2020		2019
Assets
Cash	$	75,475	$	21,955
Investment in Bank	1,200,689		977,959
Investment in nonbank subsidiaries	9,778		9,795
Other assets	35,108		37,905
Total assets	$	1,321,050	$	1,047,614
Liabilities and Shareholders’ Equity
Subordinated debentures and notes	$	203,637	$	141,258
Notes payable	30,000		34,286
Accounts payable and other liabilities	8,439		4,885
Shareholders' equity	1,078,974		867,185
Total liabilities and shareholders' equity	$	1,321,050	$	1,047,614

Condensed Statements of Operations

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income:
Dividends from Bank	$	37,000	$	60,000	$	30,000
Dividends from nonbank subsidiaries	1,400		1,500		1,200
Other	483		663		1,784
Total income	38,883		62,163		32,984
Expenses:
Interest expense-subordinated debentures and notes	9,885		7,507		5,798
Interest expense-notes payable	705		1,182		62
Other expenses	6,946		6,936		7,087
Total expenses	17,536		15,625		12,947
Income before taxes and equity in undistributed earnings of subsidiaries	21,347		46,538		20,037
Income tax benefit	3,448		3,478		3,482
Net income before equity in undistributed earnings of subsidiaries	24,795		50,016		23,519
Equity in undistributed earnings of subsidiaries	49,589		42,723		65,698
Net income and comprehensive income	$	74,384	$	92,739	$	89,217

Condensed Statements of Cash Flows

	Year ended December 31,
($ in thousands)	2020		2019		2018
Cash flows from operating activities:
Net income	$	74,384	$	92,739	$	89,217
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation	4,178		4,032		3,452
Net income of subsidiaries	(87,989)		(104,223)		(94,898)
Dividends from subsidiaries	38,400		61,500		31,200
Other, net	3,588		(1,063)		(953)
Net cash provided by operating activities	32,561		52,985		28,018
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(1,243)		(36,015)		—
Purchases of other investments	(1,166)		(2,634)		(2,729)
Proceeds from distributions on other investments	765		1,271		1,911
Net cash used in investing activities	(1,644)		(37,378)		(818)
Cash flows from financing activities:
Proceeds from issuance of subordinated notes	61,953		—		—
Proceeds from notes payable	—		1,000		2,000
Repayments of notes payable	—		(3,000)		—
Proceeds from issuance of long-term debt	—		40,000		—
Repayment of long-term debt	(4,286)		(5,714)		—
Cash dividends paid	(19,795)		(16,569)		(10,845)
Payments for the repurchase of common stock	(15,347)		(15,526)		(19,387)
Payments for the issuance of equity instruments, net	78		(212)		(2,576)
Net cash provided by (used in) financing activities	22,603		(21)		(30,808)
Net increase (decrease) in cash and cash equivalents	53,520		15,586		(3,608)
Cash and cash equivalents, beginning of year	21,955		6,369		9,977
Cash and cash equivalents, end of year	$	75,475	$	21,955	$	6,369
Supplemental disclosures of cash flow information:
Noncash transactions:
Common shares issued in connection with acquisitions	$	167,035	$	171,885	$	—

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Quarterly Condensed Financial Information

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Condensed Financial Information

QUARTERLY CONDENSED FINANCIAL INFORMATION (Unaudited)

The following table presents unaudited quarterly financial information for the periods indicated:

	2020
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	84,113	$	70,787	$	73,191	$	76,688
Interest expense	6,667		7,433		7,358		13,320
Net interest income	77,446		63,354		65,833		63,368
Provision for credit losses	9,463		14,080		19,591		22,264
Net interest income after provision for loan losses	67,983		49,274		46,242		41,104
Noninterest income	18,506		12,629		9,960		13,408
Noninterest expense	51,050		39,524		37,912		38,673
Income before income tax expense	35,439		22,379		18,290		15,839
Income tax expense	6,508		4,428		3,656		2,971
Net income	$	28,931	$	17,951	$	14,634	$	12,868
Earnings per common share:
Basic	$	1.00	$	0.68	$	0.56	$	0.49
Diluted	1.00		0.68		0.56		0.48
	2019
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	77,238	$	81,078	$	79,201	$	67,617
Interest expense	15,625		18,032		17,486		15,274
Net interest income	61,613		63,046		61,715		52,343
Provision for credit losses	1,341		1,833		1,722		1,476
Net interest income after provision for loan losses	60,272		61,213		59,993		50,867
Noninterest income	14,418		13,564		11,964		9,230
Noninterest expense	38,354		38,239		49,054		39,838
Income before income tax expense	36,336		36,538		22,903		20,259
Income tax expense	7,246		7,469		4,479		4,103
Net income	$	29,090	$	29,069	$	18,424	$	16,156
Earnings per common share:
Basic	$	1.10	$	1.09	$	0.69	$	0.68
Diluted	1.09		1.08		0.68		0.67

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New Authoritative Accounting Guidance

12 Months Ended

Dec. 31, 2020

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

New Authoritative Accounting Guidance

The following table illustrates the impact of adoption:

($ in thousands)	December 31, 2019		Impact of Adoption		January 1, 2020
Assets:
Loans	$	5,314,337	$	7,091	$	5,321,428
Allowance for credit losses on loans	43,288		28,387		71,675
Allowance for credit losses on held-to-maturity debt securities	—		303		303
Deferred tax asset	14,851		5,898		20,749
Liabilities:
Reserve for unfunded commitments	430		2,413		2,843
Shareholders’ Equity
Retained Earnings	380,737		(18,114)		362,623

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Business and Consolidation

Enterprise is a financial holding company that provides a full range of banking and wealth management services to individuals and corporate customers primarily located in the Arizona, California, Kansas, Missouri, Nevada, and New Mexico markets through its banking subsidiary, Enterprise Bank & Trust. All intercompany accounts and transactions have been eliminated.The Company and its banking subsidiary are subject to the regulations of certain federal and state agencies and undergo periodic examinations by those regulatory agencies. The Company has one operating segment.

Use of Estimates

The consolidated financial statements of the Company have been prepared in conformity with GAAP. In preparing the consolidated financial statements, management is required to make estimates and assumptions, which significantly affect the reported amounts in the consolidated financial statements. Such estimates include the valuation of loans, goodwill, intangible assets, and other long-lived assets, along with assumptions used in the calculation of income taxes, among others. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.

Cash Flow Information

For purposes of reporting cash flows, the Company considers cash and due from banks, interest-bearing deposits and federal funds sold that mature within 90 days of the balance sheet date to be cash and cash equivalents. At December 31, 2019, approximately $9.7 million of cash and due from banks represented required reserves on deposits maintained by the Company in accordance with Federal Reserve requirements. There were no required reserves on December 31, 2020.

Investments

The Company has classified all investments in debt securities as available-for-sale or held-to-maturity.

Securities classified as available-for-sale are carried at fair value. Unrealized holding gains and losses for available-for-sale securities are excluded from earnings and reported as a net amount in a separate component of shareholders’ equity until realized. All previous fair value adjustments included in the separate component of shareholders’ equity are reversed upon sale.

Securities classified as held-to-maturity are carried at amortized cost and adjusted for amortization of premiums and accretion of discounts.

Prior to the adoption of ASU 2016-13 on January 1, 2020, declines in the fair value of securities below their cost deemed to be other-than-temporary were reflected in operations as realized losses. In estimating other-than-temporary impairment losses, management evaluated investment securities for other-than-temporary declines in fair value on a quarterly basis. This analysis required management to consider various factors, which included (1) the present value of the cash flows expected to be collected compared to the amortized cost of the security, (2) duration and magnitude of the decline in value, (3) the financial condition of the issuer or issuers, (4) structure of the security, and (5) the intent to sell the security or whether it’s more likely than not the Company would be required to sell the security before its anticipated recovery in market value.

An ACL on held-to-maturity securities is deducted from the amortized cost basis of the securities to reflect the expected amount to be collected. When it is determined that a security will not be collected, the balance is written-off through the allowance. In evaluating the need for an ACL, securities with similar risk characteristics are grouped and an estimate of expected cash flows is determined using historical loss experience, adjusted for current and reasonable and supportable forecasts of economic conditions.

For available-for-sale securities in a loss position, the Company evaluates whether the decline in fair value below amortized cost resulted from a credit loss or other factors. Losses attributed to credit are recognized through an ACL on available-for-sale securities, limited to the amount that the fair value of securities is less than the amortized cost basis. In assessing credit loss, the Company considers, among other things, (1) the extent to which fair value is less than the amortized cost basis, (2) adverse conditions specific to the security or industry, (3) historical payment patterns, (4) the likelihood of future payments, and (5) changes to the rating of a security by a rating agency.

The Company has elected to exclude accrued interest receivable balances from the estimate of the ACL as these amounts are timely written off as a credit loss expense. Adjustments to the ACL on held-to-maturity and available-for-sale securities are recognized as a component of the provision for credit losses in the Consolidated Statements of Operations.

Premiums and discounts are amortized or accreted over the expected lives of the respective securities as an adjustment to yield using the interest method. Dividend and interest income is recognized when earned. Realized gains and losses are included in earnings and are derived using the specific identification method for determining the cost of securities sold.

Loans Receivable

The Company provides long-term financing of one-to-four-family residential real estate by originating fixed and variable rate loans. Long-term fixed and variable rate loans are usually sold into the secondary market with limited recourse. Upon receipt of an application for a real estate loan, the Company determines whether the loan will be sold into the secondary market or retained in the Company’s loan portfolio. The interest rates on the loans sold are

locked with the buyer and the Company bears no interest rate risk related to these loans. Mortgage loans held-for-sale are carried at the lower of cost or fair value, which is determined on a specific identification method. The Company does not retain servicing on these loans.

The Company also originates SBA7(a) loans that generally provides for a guarantee of 75% up to a maximum amount. The guaranteed portion of the loan can be sold in an active secondary market. For the year ended December 31, 2020, all SBA7(a) loans are considered held-for-investment; however, as the Company makes the determination to sell the loans, they will be moved into the held-for-sale category. Sales of SBA guaranteed loans are executed on a servicing retained basis, and the Company retains the rights and obligations to service the loans. At December 31, 2020, the Company was servicing $296 million in SBA loans and has recorded a related servicing asset of $5.7 million. The servicing asset is accounted for under the amortization method and is evaluated for impairment. Amortization of the servicing asset is recorded as a reduction to servicing income.

Gains on the sale of loans held-for-sale are reported net of direct origination fees and costs in the Company’s Consolidated Statements of Operations.

Loans

Loans are reported at the principal balance outstanding, net of unearned fees, costs, and premiums or discounts on acquired loans. Loan origination fees, direct origination costs, and premiums or discounts resulting from acquired loans are deferred and recognized over the lives of the related loans as a yield adjustment using the interest method.

Interest on loans is accrued to income based on the principal balance outstanding. The recognition of interest income is discontinued when a loan becomes 90 days past due or a significant deterioration in the borrower’s credit has occurred which, in management’s judgment, negatively impacts the collectibility of the loan. Unpaid interest on such loans is reversed at the time the loan becomes uncollectible and subsequent interest payments received are generally applied to principal if any doubt exists as to the collectibility of such principal. Loans that have not been restructured are returned to accrual status when management believes full collectibility of principal and interest is expected. Non-accrual loans that have been restructured will remain in a non-accrual status until the borrower has made at least six months of consecutive contractual payments.

The Company has elected to present the accrued interest receivable balance separate from amortized cost basis, to exclude accrued interest receivable balances from the tabular disclosures, and not to estimate an ACL on accrued interest receivable as these amounts are timely written off as a credit loss expense.

Accrued interest receivable totaled $31.1 million at December 31, 2020 and was reported in Other Assets on the consolidated balance sheets.

Acquired Loans

Prior to the adoption of ASU 2016-13 on January 1, 2020, PCI loans were acquired in a business combination or transaction, had evidence of deterioration of credit quality since origination and for which it was probable, at acquisition, that the Company would be unable to collect all contractually required payments receivable. PCI loans were initially recorded at fair value (as determined by the present value of expected future cash flows) with no valuation allowance. The difference between the undiscounted cash flows expected at acquisition and the investment in the loans, or the “accretable yield,” was recognized as interest income on a level-yield method over the life of the loans. Contractually required payments for interest and principal that exceeded the undiscounted cash flows expected at acquisition, or the “nonaccretable difference,” were not recognized as a yield adjustment or as a loss accrual or a valuation allowance. The Company aggregated individual loans with common risk characteristics into pools of loans. Increases in expected cash flows subsequent to the initial investment were recognized prospectively through adjustment of the yield on the loans over their remaining lives. Decreases in expected cash flows due to an inability to collect contractual cash flows were recognized as impairment through the provision for loan losses account. Any allowance for loan loss on these pools reflected only losses incurred after the acquisition. Disposals of loans, including sales of loans, paydowns, payments in full or foreclosures resulted in the removal or reduction of the loan from the loan pool.

Subsequent to the adoption of ASU 2016-16, acquired loans are separated into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (PCD), for loans which have experienced more than insignificant credit deterioration since origination, or loans with no credit deterioration (non-PCD). At the date of acquisition, an ACL on PCD loans is determined and added to the amortized cost basis of the individual loans. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. The ACL on PCD loans is recorded in the acquisition accounting and no provision for credit losses is recognized at the acquisition date. Subsequent changes to the ACL are recorded through provision expense. For non-PCD loans, an ACL is established immediately after the acquisition through a charge to the provision for credit losses.

The ACL for both PCD and non-PCD is determined by pooling loans with similar risk characteristics and using the approach discussed below under “Allowance for Credit Losses on Loans”.

Impaired Loans

Loans are considered “impaired” when it becomes probable that the Company will be unable to collect all amounts due according to the loan’s contractual terms. Non-accrual loans, loans past due greater than 90 days and still accruing, unless adequately secured and in the process of collection, and restructured loans qualify as “impaired loans.” Restructured loans involve the granting of a concession on the terms of a loan to a borrower experiencing financial difficulty. Concessions may be granted in various forms, including changes in payment schedule or interest rate.

When measuring impairment, the expected future cash flows of an impaired loan are discounted at the loan’s effective interest rate at origination. Alternatively, impairment can be measured by reference to an observable market price, if one exists, or the fair value of the collateral for a collateral-dependent loan. Loans and leases, which are deemed uncollectible, are charged off to the allowance for credit losses, while recoveries of amounts previously charged off are credited to the allowance for credit losses.

Loans are generally placed on non-accrual status when contractually past due 90 days or more as to interest or principal payments. Additionally, whenever management becomes aware of facts or circumstances that may adversely impact the collectability of principal or interest on loans, it is management’s practice to place such loans on non-accrual status immediately, rather than delaying such action until the loans become 90 days past due. Previously accrued and uncollected interest on such loans is reversed. Income is recorded only to the extent that a determination has been made that the principal balance of the loan is collectible and the interest payments are subsequently received in cash, or for a restructured loan, the borrower has made six consecutive contractual payments. If collectibility of the principal is in doubt, payments received are applied to loan principal.

Loans past due 90 days or more but still accruing interest are also generally included in nonperforming loans. Loans past due 90 days or more but still accruing are classified as such where the underlying loans are both well secured (the collateral value covers principal and accrued interest) and in the process of collection.

Allowance for Credit Losses on Loans

The ACL on loans is a valuation account that is deducted from the amortized cost basis to present the net amount expected to be collected. Loans are charged-off against the allowance when management believes the uncollectibility of a loan balance is confirmed.

Management estimates the allowance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, or term as well as for changes in environmental conditions, such as changes in unemployment rates, property values, or other relevant factors.

The ACL on loans is measured on a collective basis when similar risk characteristics exist. The Company has identified the following portfolio segments:

C&I – C&I loans consist of loans to small and medium-sized businesses in a wide variety of industries. These loans are generally collateralized by inventory, accounts receivable, equipment, real estate and other commercial assets, and may be supported by other credit enhancements such as personal guarantees. Risk arises primarily due to a difference between expected and actual cash flows of the borrower. However, the recoverability of these loans is also dependent on other factors primarily dictated by the type of collateral securing these loans. The fair value of the collateral securing these loans may fluctuate as market conditions change. Included within C&I are revolving loans supported by borrowing bases that fluctuate depending on the amount of underlying collateral. A portion of C&I loans consists of sponsor finance, which are loans with senior debt exposure to private equity backed companies.

CRE – CRE loans include various types of loans for which the Company holds real property as collateral. Commercial real estate lending activity is typically restricted to owner-occupied properties or to investor properties that are owned by customers with a current banking relationship. The primary risks of CRE loans include the borrower’s inability to pay, material decreases in the value of the real estate being held as collateral and significant increases in interest rates, which may make the real estate mortgage loan unprofitable. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy.

Construction and Land Development – The Company originates loans to finance construction projects including one- to four-family residences, multifamily residences, commercial office, and industrial projects. Construction loans are generally collateralized by first liens on the real estate and have floating interest rates. Construction loans are considered to have higher risks due to construction completion and timing risk, and the ultimate repayment being sensitive to interest rate changes, governmental regulation of real property and the availability of long-term financing. Additionally, economic conditions may impact the Company’s ability to recover its investment in construction loans. Adverse economic conditions may negatively impact the real estate market which could affect the borrowers’ ability to complete and sell the project. Additionally, the fair value of the underlying collateral may fluctuate as market conditions change.

Residential Real Estate – The Company originates loans to finance one- to four-family residences, secured by both first and second liens. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Residential loans with a second lien are inherently riskier due to the junior lien position.

Agricultural – Agricultural loans are generally secured with equipment, cattle, crops or other non-real property and at times the underlying real property. Agricultural loans are primarily included as a component of CRE and C&I loans.

Consumer – The Company provides a broad range of consumer loans to customers, including personal lines of credit, credit cards and automobile loans. Repayment of these loans is dependent on the borrowers’ ability to pay and the fair value of the underlying collateral. Consumer loans are included as a component of Other loans.

The Company utilizes a DCF method to measure the ACL on loans collectively evaluated that are sub-segmented by credit risk levels. The DCF method incorporates assumptions for probability of default, loss given default, prepayments and curtailments over the contractual term of the loans. In determining the probability of default, the Company utilized a regression analysis to determine certain economic factors that are relevant loss drivers in the portfolio segments based on historical or peer evaluations. National unemployment is a loss driver used in nearly all portfolios, except Consumer. The annual percentage change in gross domestic product is also used in C&I, Construction, Agricultural and Consumer portfolios. The annual percentage change in a commercial real estate index, national house price index and the consumer price index are used in the CRE, Residential Real Estate and Consumer portfolios, respectively. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company.

The Company uses a one-year reasonable and supportable forecast that considers baseline, upside and downside economic scenarios. For periods beyond the forecast period, the Company reverts to historical loss rates on a straight-line basis over a one-year period.

Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate.

Loan Charge-Offs

Loans are charged-off when the primary and secondary sources of repayment (cash flow, collateral, guarantors, etc.) are less than their carrying value.

Other Real Estate

Other real estate represents property acquired through foreclosure or deeded to the Company in lieu of foreclosure on loans on which the borrowers have defaulted on the payment of principal or interest. Other real estate is recorded on an individual asset basis at the lower of cost or fair value less estimated costs to sell. The fair value of other real estate is based upon estimates of future cash flows, market value of similar assets, if available, or independent appraisals. These estimates involve significant uncertainties and judgments. As a result, fair value estimates may not be realizable in a current sale or settlement of the other real estate. Subsequent reductions in fair value are expensed within noninterest expense.

Gains and losses resulting from the sale of other real estate are credited or charged to current period earnings. Costs of maintaining and operating other real estate are expensed as incurred, and expenditures to complete or improve other real estate properties are capitalized if the expenditures are expected to be recovered upon ultimate sale of the property.

Fixed Assets

Buildings, leasehold improvements, furniture, fixtures, equipment, and capitalized software are stated at cost less accumulated depreciation. All categories are computed using the straight-line method over their respective estimated useful lives. Furniture, fixtures and equipment is depreciated over three to ten years, buildings and leasehold improvements over ten to forty years, and capitalized software over three years based upon estimated lives or lease obligation periods.

State Tax Credits Held for Sale

The Company has purchased the rights to receive 10-year streams of state tax credits at agreed upon discount rates and sells such tax credits to its clients and others. State tax credits are accounted for at cost.

Cash Surrender Value of Life Insurance

The Company has purchased bank-owned life insurance policies on certain bank officers. Bank-owned life insurance is recorded at its cash surrender value. Changes in the cash surrender values, including death benefits in excess of the carrying amount, are included in noninterest income.

Federal Home Loan Bank Stock

The Bank, as a member of the FHLB, is required to maintain an investment in the capital stock of the FHLB. The stock is redeemable at par by the FHLB, and is, therefore, carried at cost and periodically evaluated for impairment. The Company records FHLB dividends in interest income.

Goodwill and Other Intangible Assets

The Company tests goodwill for impairment on an annual basis and whenever events or changes in circumstances indicate that the Company may not be able to recover the respective asset’s carrying amount. The Company’s annual test for impairment was performed in the fourth quarter of December 31, 2020. Such tests involve the use of estimates and assumptions. Core deposit intangibles are amortized using an accelerated method over an estimated useful life of approximately 10 years.

Potential impairments to goodwill must first be identified by performing a qualitative assessment which evaluates relevant events or circumstances to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If this test indicates it is more likely than not that goodwill has been impaired, then a quantitative impairment test is completed. The quantitative impairment test calculates the fair value of the reporting unit and compares it with its carrying amount, including goodwill. If the carrying amount of goodwill exceeds its implied fair market value, an impairment loss is recognized. That loss is equal to the carrying amount of goodwill that is in excess of its implied fair market value.

Impairment of Long-Lived Assets

Long-lived assets, such as fixed assets and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposal group classified as held-for-sale are presented separately in the appropriate asset and liability sections of the balance sheet.

Derivative Financial Instruments and Hedging Activities

The Company uses derivative financial instruments to assist in the management of interest rate sensitivity and to modify the repricing, maturity and option characteristics of certain assets and liabilities. In addition, the Company also offers an interest rate hedge program that includes interest rate swaps to assist its customers in managing their interest rate risk profile. In order to eliminate the interest rate risk associated with offering these products, the Company enters into derivative contracts with third parties to offset the customer contracts. 

Derivative instruments are required to be measured at fair value and recognized as either assets or liabilities in the consolidated financial statements. Fair value represents the payment the Company would receive or pay if the item were sold or bought in a current transaction. The accounting for changes in fair value (gains or losses) of a hedged item is dependent on whether the related derivative is designated and qualifies for “hedge accounting.” The Company assigns derivatives to one of these categories at the purchase date: cash flow hedge, fair value hedge, or non-designated derivatives. An assessment of the expected and ongoing hedge effectiveness of any derivative designated a fair value hedge or cash flow hedge is performed as required by the accounting standards. Derivatives are included in other assets and other liabilities in the consolidated balance sheets. The fair value amounts recognized for derivative instruments and the fair value amounts recognized for the right to reclaim or obligation to return cash collateral are not offset when represented under a master netting arrangement. Generally, the only derivative instruments used by the Company have been interest rate swaps, forward currency contracts, and interest rate caps.

Certain derivative financial instruments are not designated as cash flow or as fair value hedges for accounting purposes. These non-designated derivatives are intended to provide interest rate protection on net interest income or noninterest income but do not meet hedge accounting treatment. Customer accommodation interest rate swap contracts are not designated as hedging instruments. Changes in the fair value of these instruments are recorded in interest income or noninterest income in the consolidated statements of income depending on the underlying hedged item.

Income Taxes

The Company and its subsidiaries file a consolidated federal income tax return. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. We evaluate the need for deferred tax asset valuation allowances based on a more-likely-than-not standard. The ability to realize deferred tax assets depends on the ability to generate sufficient positive taxable income within the carryback or carryforward periods provided for in the laws for each applicable taxing jurisdiction. We consider the following possible sources of taxable income: future reversal patterns of existing taxable temporary differences, future taxable income exclusive of reversing temporary differences, taxable income in prior carryback years and the availability of qualified tax planning strategies. The assessment regarding whether a valuation allowance is required or should be adjusted depends on all available positive and negative factors including, but not limited to, nature, frequency, and severity of recent losses, duration of available carryforward periods, experience with tax attributes expiring unused and near and medium term financial outlook. Because of the complexity of tax laws and regulations, interpretation can be difficult and subject to legal judgment given specific facts and circumstances. It is possible that others, given the same information, may at any point in time reach different reasonable conclusions regarding the estimated amounts of accrued taxes.

Stock-Based Compensation

Stock-based compensation is recognized as an expense for stock options, restricted stock awards, performance stock units, and restricted stock units granted to employees, directors, and advisors in return for service. Equity classified awards are measured at the grant date fair value using either an observable market value or a valuation methodology, and recognized over the requisite service period on a straight-line basis. Forfeitures are recorded as they occur. A description of the Company’s stock-based employee compensation plan is described in “Note 16 - Stockholders’ Equity and Compensation Plans.”

Acquisitions and Divestitures

Acquisitions and business combinations are accounted for using the acquisition method of accounting. The assets and liabilities of the acquired entities have been recorded at their estimated fair values at the date of acquisition. Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets.

The purchase price allocation process requires an estimation of the fair values of the assets acquired and the liabilities assumed. When a business combination agreement provides for an adjustment to the cost of the combination contingent on future events, the Company includes an estimate of the acquisition-date fair value as part of the cost of the combination. To determine the fair values, the Company relies on third party valuations, such as appraisals, or internal valuations based on discounted cash flow analyses or other valuation techniques. The results of operations of the acquired business are included in the Company’s consolidated financial statements from the date of acquisition.  Merger-related expenses include costs directly related to merger or acquisition activity and include legal and professional fees, system consolidation and conversion costs, and compensation costs such as severance and retention incentives for employees impacted by acquisition activity. The Company accounts for merger-related expenses in the periods in which the costs are incurred and the services are received.

For divestitures, the Company measures an asset (disposal group) classified as held-for-sale at the lower of its carrying value at the date the asset is initially classified as held-for-sale or its fair value less costs to sell. The Company reports the results of operations of an entity or group of components that either has been disposed of or held-for-sale as discontinued operations only if the disposal of that component represents a strategic shift that has or will have a major effect on an entity’s operations and financial results.

Any incremental direct costs incurred to transact the sale are allocated against the gain or loss on the sale. These costs would include items like legal fees, title transfer fees, broker fees, etc. Any goodwill and intangible assets associated with the portion of the reporting unit to be disposed of is included in the carrying amount of the business in determining the gain or loss on the sale.

Basic and Diluted Earnings Per Common Share

Basic earnings per common share data is calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Common shares outstanding include common stock and restricted stock awards where recipients have satisfied the vesting terms. Diluted earnings per common share gives effect to all dilutive potential common shares outstanding during the period using the treasury stock method.

Consolidated Statement of Comprehensive Income

The Consolidated Statement of Comprehensive Income includes the amount and the related tax impact that have been reclassified from accumulated other comprehensive income to net income. The classification adjustment for unrealized loss/gain on sale of securities included in net income has been recorded through the gain on sale of investment securities line item, within noninterest income, in the Company’s Consolidated Statements of Operations.

Available-for-sale Securities

The unrealized losses at both December 31, 2020, and 2019, were primarily attributable to changes in market interest rates since the securities were purchased. At December 31, 2020, the Company had not recorded an ACL on

available-for-sale securities. At December 31, 2019, the Company had not recognized an other-than-temporary impairment.

Accrued interest receivable on held-to-maturity debt securities totaled $3.6 million at December 31, 2020 and is excluded from the estimate of expected credit losses. The estimate of expected credit losses considers historical credit loss information adjusted for current conditions and reasonable and supportable forecasts. At December 31, 2020, the ACL on held-to-maturity securities was $0.4 million.

Reclassification, Policy [Policy Text Block]

Certain amounts reported in prior periods have been reclassified to conform to the current presentation. The reclassifications had no effect on net income or shareholders’ equity.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

New Authoritative Accounting Guidance

The following table illustrates the impact of adoption:

($ in thousands)	December 31, 2019		Impact of Adoption		January 1, 2020
Assets:
Loans	$	5,314,337	$	7,091	$	5,321,428
Allowance for credit losses on loans	43,288		28,387		71,675
Allowance for credit losses on held-to-maturity debt securities	—		303		303
Deferred tax asset	14,851		5,898		20,749
Liabilities:
Reserve for unfunded commitments	430		2,413		2,843
Shareholders’ Equity
Retained Earnings	380,737		(18,114)		362,623

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Acquisitions & Divestitures Acquisitions & Divestitures (Tables)

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

($ in thousands)	As Recorded by Seacoast		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	63,744	$	—		$	63,744
Loans	1,160,602		29,839		(a)	1,190,441
Other investments	12,100		—			12,100
Fixed assets	925		(275)		(b)	650
Accrued interest receivable	4,511		—			4,511
Goodwill	35,395		(35,395)		(c)	—
Intangible assets	1,513		1,168		(d)	2,681
Deferred tax assets	12,009		(8,687)		(e)	3,322
Other assets	35,025		(437)		(f)	34,588
Total assets acquired	$	1,325,824	$	(13,787)		$	1,312,037
Liabilities assumed:
Deposits	$	1,081,034	$	(28)	(f)	$	1,081,006
PPPLF advances	86,096		—			86,096
Accrued interest payable	185		—			185
Other liabilities	25,211		1,097		(f)	26,308
Total liabilities assumed	$	1,192,526	$	1,069		$	1,193,595
Net assets acquired	$	133,298	$	(14,856)		$	118,442
Consideration paid:
Cash						$	1,630
Common stock						167,035
Total consideration paid						$	168,665
Goodwill						$	50,223

(a)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Seacoast.

(b)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(c)Adjustment to eliminate goodwill.

(d)Eliminate acquired intangibles and record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(e)Adjustment for deferred taxes.

(f)Other miscellaneous fair value adjustments.

The following table presents the assets acquired and liabilities assumed of Trinity as of March 8, 2019.

($ in thousands)	As Recorded by Trinity		Adjustments			As Recorded by EFSC
Assets acquired:
Cash and cash equivalents	$	13,899	$	—		$	13,899
Interest-earning deposits greater than 90 days	100		—			100
Securities	428,715		(619)		(a)	428,096
Loans	705,057		(20,743)		(b)	684,314
Other real estate	5,284		(2,059)		(c)	3,225
Other investments	6,673		—			6,673
Fixed assets	27,586		(300)		(d)	27,286
Accrued interest receivable	3,997		—			3,997
Intangible assets	—		23,066		(e)	23,066
Deferred tax assets	10,708		(2,386)		(f)	8,322
Other assets	35,045		(1,484)		(g)	33,561
Total assets acquired	$	1,237,064	$	(4,525)		$	1,232,539
Liabilities assumed:
Deposits	$	1,081,151	$	36	(g)	$	1,081,187
Subordinated debentures	26,806		(3,972)		(g)	22,834
FHLB advances	6,800		171		(g)	6,971
Accrued interest payable	370		—			370
Other liabilities	5,842		(827)		(g)	5,015
Total liabilities assumed	$	1,120,969	$	(4,592)		$	1,116,377
Net assets acquired	$	116,095	$	67		$	116,162
Consideration paid:
Cash						$	37,275
Common stock						171,885
Total consideration paid						$	209,160
Goodwill						$	92,998

(a)Fair value adjustments of the securities portfolio.

(b)Fair value adjustments based on the Company’s evaluation of the acquired loan portfolio, write-off of net deferred loan costs and elimination of the allowance for loan losses recorded by Trinity.

(c)Fair value adjustment based on the Company’s evaluation of the acquired other real estate portfolio.

(d)Fair value adjustments based on the Company’s evaluation of the acquired premises and equipment.

(e)Record the core deposit intangible asset on the acquired core deposit accounts. Amount to be amortized using a sum-of-years digits method over a useful life of 10 years.

(f)Adjustment for deferred taxes.

(g)Other miscellaneous fair value adjustments.

Business Acquisition, Pro Forma Information [Table Text Block]

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2020 and 2019, as if the acquisition had occurred on January 1, 2019. The pro forma results combine the historical results of Seacoast with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including amortization and accretion of fair value adjustments. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2019. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2020 are included in net income in the table below. 

	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2020		2019
Total revenue (net interest income plus noninterest income)	$	381,914	$	355,500
Net income	93,918		86,888
Diluted earnings per common share	3.00		2.79

The following table provides the unaudited pro forma information for the results of operations for the twelve months ended December 31, 2019 and 2018, as if the acquisition had occurred on January 1, 2018. The pro forma results combine the historical results of Trinity with the Company’s Consolidated Statements of Income, adjusted for the impact of the application of the acquisition method of accounting including loan discount accretion, intangible assets amortization, and deposit and trust preferred securities premium accretion, net of taxes. The pro forma results have been prepared for comparative purposes only and are not necessarily indicative of the results that would have been obtained had the acquisition actually occurred on January 1, 2018. No assumptions have been applied to the pro forma results of operations regarding possible revenue enhancements, expense efficiencies or

asset dispositions. Only the acquisition-related expenses that have been incurred as of December 31, 2019 are included in net income in the table below. 

	Pro Forma
	Twelve months ended December 31,
($ in thousands, except per share data)	2019		2018
Total revenue (net interest income plus noninterest income)	$	296,677	$	286,076
Net income	107,626		85,579
Diluted earnings per common share	4.11		3.14

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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Summary of Per Common Share Data and Amounts

The following table presents a summary of earnings per common share data and amounts for the periods indicated.

	Year ended December 31,
($ in thousands, except per share data)	2020		2019		2018
Net income	$	74,384	$	92,739	$	89,217
Weighted average common shares outstanding	26,954		26,045		23,100
Additional dilutive common stock equivalents	35		114		189
Weighted average diluted common shares outstanding	26,989		26,159		23,289
Basic earnings per common share:	$	2.76	$	3.56	$	3.86
Diluted earnings per common share:	$	2.76	$	3.55	$	3.83

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Investments (Tables)

12 Months Ended

Dec. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation

The following table presents the amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity: 

	December 31, 2020
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	14,978	$	186	$	(3)	$	15,161
Obligations of states and political subdivisions	335,271		8,994		(33)		344,232
Agency mortgage-backed securities	506,703		20,190		(321)		526,572
Corporate debt securities	14,750		248		—		14,998
U.S. Treasury Bills	10,980		486		—		11,466
Total securities available-for-sale	$	882,682	$	30,104	$	(357)	$	912,429
Held-to-maturity securities:
Obligations of states and political subdivisions	$	248,324	$	2,814	$	—	$	251,138
Agency mortgage-backed securities	112,742		2,295		(496)		114,541
Corporate debt securities	126,993		8,851		—		135,844
Total securities held-to-maturity	$	488,059	$	13,960	$	(496)	$	501,523
Less: Allowance for credit losses	449
Total securities held-to-maturity, net	$487,610
	December 31, 2019
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	9,954	$	92	$	—	$	10,046
Obligations of states and political subdivisions	207,269		6,118		(363)		213,024
Agency mortgage-backed securities	888,129		15,083		(1,191)		902,021
U.S. Treasury Bills	9,971		255		—		10,226
Total securities available-for-sale	$	1,115,323	$	21,548	$	(1,554)	$	1,135,317
Held-to-maturity securities:
Obligations of states and political subdivisions	$	11,704	$	170	$	—	$	11,874
Agency mortgage-backed securities	46,346		675		—		47,021
Corporate debt securities	123,116		128		(200)		123,044
Total securities held-to-maturity	$	181,166	$	973	$	(200)	$	181,939

During 2020 and 2019, the Company transferred securities with a book value of $331.0 million and $116.3 million and fair value of $352.6 million and $123.2 million, respectively, from available-for-sale to held-to-maturity. The Company believes the held-to-maturity category is more consistent with the Company’s intent for these securities. The transfer of securities was made at fair value at the time of transfer. The unamortized portion of the unrealized holding gain at the time of transfer is retained in accumulated other comprehensive income and in the carrying value of held-to-maturity securities. Accordingly, the balance of held-to-maturity securities in the “Amortized cost”

column in the table above includes a net unamortized unrealized gain of $25.6 million and $6.6 million at December 31, 2020 and 2019, respectively. Such amounts are amortized over the remaining life of the securities.

At December 31, 2020, and 2019, there were no holdings of securities of any one issuer in an amount greater than 10% of shareholders’ equity, other than the U.S. Government agencies and sponsored enterprises. The agency mortgage-backed securities are all issued by U.S. Government-sponsored enterprises. Securities having a fair value of $525.8 million and $484.8 million at December 31, 2020, and December 31, 2019, respectively, were pledged as collateral to secure deposits of public institutions and for other purposes as required by law or contract provisions.

Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation

The following table presents the amortized cost, gross unrealized gains and losses and fair value of securities available-for-sale and held-to-maturity: 

	December 31, 2020
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	14,978	$	186	$	(3)	$	15,161
Obligations of states and political subdivisions	335,271		8,994		(33)		344,232
Agency mortgage-backed securities	506,703		20,190		(321)		526,572
Corporate debt securities	14,750		248		—		14,998
U.S. Treasury Bills	10,980		486		—		11,466
Total securities available-for-sale	$	882,682	$	30,104	$	(357)	$	912,429
Held-to-maturity securities:
Obligations of states and political subdivisions	$	248,324	$	2,814	$	—	$	251,138
Agency mortgage-backed securities	112,742		2,295		(496)		114,541
Corporate debt securities	126,993		8,851		—		135,844
Total securities held-to-maturity	$	488,059	$	13,960	$	(496)	$	501,523
Less: Allowance for credit losses	449
Total securities held-to-maturity, net	$487,610
	December 31, 2019
($ in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Obligations of U.S. Government-sponsored enterprises	$	9,954	$	92	$	—	$	10,046
Obligations of states and political subdivisions	207,269		6,118		(363)		213,024
Agency mortgage-backed securities	888,129		15,083		(1,191)		902,021
U.S. Treasury Bills	9,971		255		—		10,226
Total securities available-for-sale	$	1,115,323	$	21,548	$	(1,554)	$	1,135,317
Held-to-maturity securities:
Obligations of states and political subdivisions	$	11,704	$	170	$	—	$	11,874
Agency mortgage-backed securities	46,346		675		—		47,021
Corporate debt securities	123,116		128		(200)		123,044
Total securities held-to-maturity	$	181,166	$	973	$	(200)	$	181,939

During 2020 and 2019, the Company transferred securities with a book value of $331.0 million and $116.3 million and fair value of $352.6 million and $123.2 million, respectively, from available-for-sale to held-to-maturity. The Company believes the held-to-maturity category is more consistent with the Company’s intent for these securities. The transfer of securities was made at fair value at the time of transfer. The unamortized portion of the unrealized holding gain at the time of transfer is retained in accumulated other comprehensive income and in the carrying value of held-to-maturity securities. Accordingly, the balance of held-to-maturity securities in the “Amortized cost”

column in the table above includes a net unamortized unrealized gain of $25.6 million and $6.6 million at December 31, 2020 and 2019, respectively. Such amounts are amortized over the remaining life of the securities.

At December 31, 2020, and 2019, there were no holdings of securities of any one issuer in an amount greater than 10% of shareholders’ equity, other than the U.S. Government agencies and sponsored enterprises. The agency mortgage-backed securities are all issued by U.S. Government-sponsored enterprises. Securities having a fair value of $525.8 million and $484.8 million at December 31, 2020, and December 31, 2019, respectively, were pledged as collateral to secure deposits of public institutions and for other purposes as required by law or contract provisions.

Investments Classified by Contractual Maturity Date

The amortized cost and estimated fair value of debt securities at December 31, 2020, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the agency mortgage-backed securities is approximately 3 years. 

	Available-for-sale				Held-to-maturity
($ in thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	12,048	$	12,240	$	—	$	—
Due after one year through five years	21,977		22,629		11,589		12,040
Due after five years through ten years	19,711		20,105		132,613		141,252
Due after ten years	322,243		330,883		231,115		233,690
Agency mortgage-backed securities	506,703		526,572		112,742		114,541
	$	882,682	$	912,429	$	488,059	$	501,523

Schedule of Unrealized Loss on Investments

There were 30 available-for-sale securities and 73 available-for-sale and held-to-maturity securities in an unrealized loss position as of December 31, 2020 and December 31, 2019, respectively, included in the following tables:

	December 31, 2020
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of U.S. Government-sponsored enterprises	$	4,997	$	3	$	—	$	—	$	4,997	$	3
Obligations of states and political subdivisions	4,079		33		—		—		4,079		33
Agency mortgage-backed securities	65,986		321		—		—		65,986		321
	$	75,062	$	357	$	—	$	—	$	75,062	$	357
The following table presents a summary of available-for-sale and held-to-maturity investment securities in an unrealized loss position:
	December 31, 2019
	Less than 12 months				12 months or more				Total
($ in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Obligations of states and political subdivisions	56,327		363		—		—		56,327		363
Agency mortgage-backed securities	131,693		756		41,491		435		173,184		1,191
Corporate debt securities	67,964		200		—		—		67,964		200
	$	255,984	$	1,319	$	41,491	$	435	$	297,475	$	1,754

Schedule of Realized Gain (Loss)

The gross gains and losses realized from sales of available-for-sale investment securities were as follows:

	December 31,
($ in thousands)	2020		2019		2018
Gross gains realized	$	421	$	400	$	9
Gross losses realized	—		(449)		—
Proceeds from sales	20,221		357,976		1,451

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Portfolio Loans (Tables)

12 Months Ended

Dec. 31, 2020

Non-covered Loans [Line Items]

Summary of Loans to Executive Officers and Directors

Following is a summary of activity for the years ended December 31, 2020 and 2019 of loans to executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director. Such loans were made in the normal course of business on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other customers and did not involve more than the normal risk of collectibility.

($ in thousands)	December 31, 2020		December 31, 2019
Balance at beginning of year	$	5,475	$	17,169
New loans and advances	2,013		1,376
Payments and other reductions	(1,771)		(13,070)
Balance at end of year	$	5,717	$	5,475

Following is a summary of activity for the year ended December 31, 2020, for deposit accounts of executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director.

($ in thousands)	December 31, 2020
Balance at beginning of year	$	9,763
Deposits	2,441
Withdrawals	(4,961)
Balance at end of year	$	7,243

Schedule of Collateral Dependent Loans

The following table presents the amortized cost basis of collateral-dependent nonperforming loans by class of loan at December 31, 2020:

	Type of Collateral
(in thousands)	Commercial Real Estate		Residential Real Estate		Blanket Lien		Other
Commercial and industrial	$	8,316	$	—	$	394	$	—
Real estate:
Commercial - investor owned	9,579		—		—		—
Commercial - owner occupied	2,940		—		—		—
Residential	—		4,135		—		—
Other	—		—		—		17
Total	$	20,835	$	4,135	$	394	$	17

Acquired PCD Loans

The Company has purchased loans, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows:

($ in thousands)	At November 12, 2020
Par value of acquired loans	$	137,693
Allowance for credit losses	(3,524)
Non-credit premium	928
Purchase price of acquired loans	$	135,097

Non-Covered Loans

Non-covered Loans [Line Items]

Summary of Portfolio Loans by Category

Below is a summary of loans by category at December 31, 2020 and 2019:

($ in thousands)	December 31, 2020		December 31, 2019*
Commercial and industrial	$	3,100,299	$	2,361,157
Real estate loans:
Commercial - investor owned	1,589,419		1,299,884
Commercial - owner occupied	1,498,408		697,437
Construction and land development	546,686		457,273
Residential	319,179		366,261
Total real estate loans	3,953,692		2,820,855
Other	187,083		134,941
Loans, before unearned loan fees	7,241,074		5,316,953
Unearned loan fees, net	(16,139)		(2,616)
Loans, including unearned loan fees	$	7,224,935	$	5,314,337

Summary of Allowance for Loan Losses and the Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method

A summary of the activity, by loan category, in the allowance for loan losses for 2018 and 2019, excluding the allowance on PCI loans, and the ACL on loans for 2020 is as follows:

($ in thousands)	Commercial and industrial		CRE - investor owned		CRE - owner occupied		Construction and land development		Residential real estate		Other		Total
Balance at December 31, 2018
Allowance for loan losses:
Balance, beginning of year	$	26,406	$	3,890	$	3,308	$	1,487	$	2,237	$	838	$	38,166
Provision for loan losses	8,394		709		1,216		97		(583)		(20)		9,813
Charge-offs	(6,894)		—		(313)		(56)		(546)		(167)		(7,976)
Recoveries	1,133		84		28		459		508		80		2,292
Balance, end of year	$	29,039	$	4,683	$	4,239	$	1,987	$	1,616	$	731	$	42,295
Balance at December 31, 2019
Allowance for loan losses:
Balance, beginning of year	$	29,039	$	4,683	$	4,239	$	1,987	$	1,616	$	731	$	42,295
Provision for loan losses	4,801		1,708		673		(237)		(330)		67		6,682
Charge-offs	(6,882)		(551)		(58)		(54)		(667)		(382)		(8,594)
Recoveries	338		95		19		776		661		295		2,184
Balance, end of year	$	27,296	$	5,935	$	4,873	$	2,472	$	1,280	$	711	$	42,567
Balance at December 31, 2020
Allowance for credit losses:
Balance at December 31, 2019	$	27,296	$	5,935	$	4,873	$	2,472	$	1,280	$	711	$	42,567
PCI allowance at December 31, 2019	159		—		—		139		—		423		721
CECL adoption	6,494		10,726		2,598		5,183		3,470		(84)		28,387
PCD loans immediately charged off	—		(5)		(57)		(217)		(1,401)		—		(1,680)
Balance, beginning of year	$	33,949	$	16,656	$	7,414	$	7,577	$	3,349	$	1,050	$	69,995
Provision for loan losses	28,373		11,037		7,845		13,438		674		2,012		63,379
Initial allowance on acquired PCD loans	23		2,026		1,427		45		3		—		3,524
Charge-offs	(5,381)		(498)		(30)		(31)		(408)		(391)		(6,739)
Recoveries	1,848		2,841		356		384		967		116		6,512
Balance, end of year	$	58,812	$	32,062	$	17,012	$	21,413	$	4,585	$	2,787	$	136,671

Summary of Portfolio Loans Individually Evaluated for Impairment and Recorded Investment in Impaired Non-Covered Loans by Category

Schedule of Recorded Investment in Impaired Portfolio Loans by Category

The recorded investment in nonperforming loans by category at December 31, 2020 and 2019 is as follows:

	December 31, 2020
($ in thousands)	Non-accrual		Restructured, accruing		Loans over 90 days past due and still accruing interest		Total nonperforming loans		Nonaccrual loans with no allowance
Commercial and industrial	$	18,158	$	3,482	$	130	$	21,770	$	8,316
Real estate:
Commercial - investor owned	9,579		—		—		9,579		716
Commercial - owner occupied	2,940		—		—		2,940		6,024
Residential	4,112		77		—		4,189
Other	29		—		—		29		3,190
Total	$	34,818	$	3,559	$	130	$	38,507	$	18,246

	December 31, 2019
($ in thousands)	Non-accrual		Restructured, accruing		Loans over 90 days past due and still accruing interest		Total nonperforming loans		Nonaccrual loans with no allowance
Commercial and industrial	$	22,328	$	—	$	250	$	22,578	$	7,654
Real estate:
Commercial - investor owned	2,303		—		—		2,303		811
Commercial - owner occupied	213		—		—		213		213
Residential	1,251		79		—		1,330		1,120
Other	1		—		—		1		—
Total	$	26,096	$	79	$	250	$	26,425	$	9,798

Summary of Recorded Investment by for Portfolio Loans Restructured

The recorded investment by category for loans restructured during the years ended December 31, 2020 and 2019 is as follows:

	Year ended December 31, 2020					Year ended December 31, 2019
($ in thousands, except for number of loans)	Number of Loans	Pre-Modification Outstanding Recorded Balance		Post-Modification Outstanding Recorded Balance		Number of Loans	Pre-Modification Outstanding Recorded Balance		Post-Modification Outstanding Recorded Balance
Commercial and industrial	3	$	7,447	$	7,447	—	$	—	$	—
Real estate:
Commercial - owner occupied	—	—		—		1	188		188
Residential	3	372		372		2	332		332
Total	6	$	7,819	$	7,819	3	$	520	$	520

Summary of Recorded Investment by Category for Portfolio Loans Restructured and Subsequently Defaulted

Restructured loans primarily resulted from interest rate concessions. As of December 31, 2020, the Company allocated an immaterial amount in specific reserves to loans that have been restructured.

Loans restructured that subsequently defaulted during the year ended December 31, 2019 are as follows:

	Year ended December 31, 2019
($ in thousands, except for number of loans)	Number of Loans	Recorded Balance
Commercial and industrial	2	$	352
Total	2	$	352

Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category

The aging of the recorded investment in past due loans by class and category at December 31, 2020 and 2019 is shown below:

	December 31, 2020
($ in thousands)	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
Commercial and industrial	$	8,652	$	12,928	$	21,580	$	3,067,415	$	3,088,995
Real estate:
Commercial - investor owned	734		9,301		10,035		1,579,384		1,589,419
Commercial - owner occupied	328		4,647		4,975		1,493,433		1,498,408
Construction and land development	13		—		13		546,673		546,686
Residential	2,071		2,118		4,189		314,990		319,179
Other	1,731		50		1,781		180,467		182,248
Total	$	13,529	$	29,044	$	42,573	$	7,182,362	$	7,224,935

	December 31, 2019
($ in thousands)	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current		Total
Commercial and industrial	$	5,679	$	8,212	$	13,891	$	2,331,932	$	2,345,823
Real estate:
Commercial - investor owned	321		1,492		1,813		1,261,168		1,262,981
Commercial - owner occupied	562		213		775		677,747		678,522
Construction and land development	308		—		308		449,072		449,380
Residential	4,689		595		5,284		349,908		355,192
Other	81		—		81		132,069		132,150
Total	$	11,640	$	10,512	$	22,152	$	5,201,896	$	5,224,048

Summary of Recorded Investment by Risk Category of Portfolio Loans by Portfolio Class and Category

The recorded investment by risk category of the loans by class at December 31, 2020, which is based upon the most recent analysis performed is as follows:

	Term Loans by Origination Year
(in thousands)	2020		2019		2018		2017		2016		Prior		Revolving Loans Converted to Term Loans		Revolving Loans		Total
Commercial and industrial
Pass (1-6)	$	1,402,276	$	454,729	$	262,258	$	132,832	$	25,057	$	58,315	$	14,118	$	527,170	$	2,876,755
Watch (7)	44,922		15,369		9,585		7,509		19,613		110		—		60,448		157,556
Classified (8-9)	6,602		9,219		3,115		3,964		4,490		1,080		1,281		22,432		52,183
Total Commercial and industrial	$	1,453,800	$	479,317	$	274,958	$	144,305	$	49,160	$	59,505	$	15,399	$	610,050	$	3,086,494
Commercial real estate-investor owned
Pass (1-6)	$	481,867	$	338,843	$	189,305	$	131,718	$	138,288	$	161,439	$	6,509	$	32,058	$	1,480,027
Watch (7)	32,308		19,722		6,656		—		9,647		17,370		—		—		85,703
Classified (8-9)	—		5,278		8,716		5,830		1,245		2,620		—		—		23,689
Total Commercial real estate-investor owned	$	514,175	$	363,843	$	204,677	$	137,548	$	149,180	$	181,429	$	6,509	$	32,058	$	1,589,419
Commercial real estate-owner occupied
Pass (1-6)	$	419,142	$	287,001	$	215,181	$	179,382	$	104,470	$	167,456	$	2,672	$	45,323	$	1,420,627
Watch (7)	13,657		5,257		3,113		6,198		4,338		8,460		1,776		941		43,740
Classified (8-9)	2,420		7,427		5,822		6,140		1,309		10,860		—		63		34,041
Total Commercial real estate-owner occupied	$	435,219	$	299,685	$	224,116	$	191,720	$	110,117	$	186,776	$	4,448	$	46,327	$	1,498,408
Construction real estate
Pass (1-6)	$	223,069	$	156,360	$	45,460	$	18,579	$	11,539	$	9,144	$	—	$	28,880	$	493,031
Watch (7)	2,544		86		34,179		11,632		—		2,499		—		—		50,940
Classified (8-9)	56		2,124		503		1		—		31		—		—		2,715
Total Construction real estate	$	225,669	$	158,570	$	80,142	$	30,212	$	11,539	$	11,674	$	—	$	28,880	$	546,686
Residential real estate
Pass (1-6)	$	57,059	$	27,907	$	17,718	$	17,138	$	27,443	$	92,657	$	1,172	$	66,902	$	307,996
Watch (7)	210		840		526		—		514		1,603		287		511		4,491
Classified (8-9)	571		733		121		14		898		3,181		—		253		5,771
Total residential real estate	$	57,840	$	29,480	$	18,365	$	17,152	$	28,855	$	97,441	$	1,459	$	67,666	$	318,258
Other
Pass (1-6)	$	43,526	$	28,195	$	30,074	$	9,646	$	5,641	$	17,027	$	—	$	40,779	$	174,888
Watch (7)	—		1		8		—		—		2,637		—		1		2,647
Classified (8-9)	—		18		19		13		—		17		8		4		79
Total Other	$	43,526	$	28,214	$	30,101	$	9,659	$	5,641	$	19,681	$	8	$	40,784	$	177,614

In the table above, loan originations in 2020 and 2019 with a classification of watch or classified primarily represent renewals or modifications initially underwritten and originated in prior years.

For certain loans, primarily credit cards, the Company evaluates credit quality based on the aging status.

The following table presents the recorded investment on loans based on payment activity:

	December 31, 2020
(in thousands)	Performing		Non Performing		Total
Commercial and industrial	$	2,502	$	—	$	2,502
Real estate:
Residential	921		—		921
Other	4,612		21		4,633
Total	$	8,035	$	21	$	8,056

The recorded investment by risk category of the loans by class and category at December 31, 2019 is as follows:

	December 31, 2019
($ in thousands)	Pass (1-6)		Watch (7)		Classified (8 & 9)		Total*
Commercial and industrial	$	2,151,084	$	124,718	$	70,021	$	2,345,823
Real estate:
Commercial - investor owned	1,242,569		17,572		2,840		1,262,981
Commercial - owner occupied	643,276		28,773		6,473		678,522
Construction and land development	437,134		12,140		106		449,380
Residential	348,246		4,450		2,496		355,192
Other	132,096		3		51		132,150
Total	$	4,954,405	$	187,656	$	81,987	$	5,224,048

*Excludes $90.3 million of loans previously accounted for as PCI

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Purchased Credit Impaired ("PCI") Loans (Tables)	12 Months Ended
	Dec. 31, 2020
Covered Loans [Line Items]
Rollforward of PCI Loans, Net of Allowance for Loan Losses
Covered Loans
Covered Loans [Line Items]
Summary of PCI Loans by Category
Summary of Aging of Recorded Investment in Past Due PCI Loans by Portfolio Class and Category

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Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Derivative [Line Items]

Schedule of Derivative Instruments

Select terms of the hedges are as follows:

$ in thousands
Notional		Fixed Rate		Maturity Date
$	15,465	2.60	%	March 15, 2024
$	14,433	2.60	%	March 30, 2024
$	18,558	2.64	%	March 15, 2026
$	13,506	2.64	%	March 17, 2026

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Balance Sheet as of December 31, 2020 and December 31, 2019.

	Notional Amount				Derivative Assets				Derivative Liabilities
($ in thousands)	December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019		December 31, 2020		December 31, 2019
Derivatives Designated as Hedging Instruments
Interest rate swap	$	61,962	$	61,962	$	—	$	—	$	5,987	$	2,872
Derivatives not Designated as Hedging Instruments
Interest rate swap	$	1,026,016	$	749,819	$	28,703	$	11,055	$	28,980	$	11,875

The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company’s financial instruments that are subject to offsetting as of December 31, 2020 and December 31, 2019. The gross amounts of assets or liabilities can be reconciled to the tabular disclosure of fair value. The tabular disclosure of fair value provides the location that financial assets and liabilities are presented on the Balance Sheet.

As of December 31, 2020
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	28,703	$	—	$	28,703	$	2	$	—	$	28,701
Liabilities:
Interest rate swap	$	34,967	$	—	$	34,967	$	2	$	34,903	$	62
Securities sold under agreements to repurchase	271,081		—		271,081		—		271,081		—
As of December 31, 2019
							Gross Amounts Not Offset in the Statement of Financial Position
($ in thousands)	Gross Amounts Recognized		Gross Amounts Offset in the Statement of Financial Position		Net Amounts of Assets presented in the Statement of Financial Position		Financial Instruments		Fair Value Collateral Posted		Net Amount
Assets:
Interest rate swap	$	11,055	$	—	$	11,055	$	56	$	—	$	10,999
Liabilities:
Interest rate swap	$	14,747	$	—	$	14,747	$	56	$	14,573	$	118
Securities sold under agreements to repurchase	230,886		—		230,886		—		230,886		—

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Fixed Assets (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Summary of Fixed Assets

A summary of fixed assets at December 31, 2020 and 2019, is as follows:

	December 31,
($ in thousands)	2020		2019
Land	$	13,389	$	14,079
Buildings and leasehold improvements	53,007		54,838
Furniture, fixtures and equipment	16,560		15,178
Capitalized software	1,373		1,373
	84,329		85,468
Less accumulated depreciation and amortization	31,160		25,455
Total fixed assets	$	53,169	$	60,013

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Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

The table below presents a summary of intangible assets:

($ in thousands)	Years ended December 31,
	2020		2019
Core deposit intangible, net, beginning of year	$	26,076	$	8,553
Additions from acquisition	2,681		23,066
Amortization	(5,673)		(5,543)
Core deposit intangible, net, end of year	$	23,084	$	26,076

Expected Amortization Schedule for the Core Deposit Intangible

The following table reflects the amortization schedule for the core deposit intangible at December 31, 2020.

Year	Core Deposit Intangible ($ in thousands)
2021	$	5,295
2022	4,517
2023	3,840
2024	3,162
2025	2,485
After 2025	3,785
	$	23,084

Schedule of Goodwill

The table below presents a summary of goodwill:

($ in thousands)	Years ended December 31,
	2020		2019
Goodwill, beginning of year	$	210,344	$	117,345
Additions from acquisition	50,223		92,999
Goodwill, end of year	$	260,567	$	210,344

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Deposits (Tables)

12 Months Ended

Dec. 31, 2020

Maturities of Time Deposits [Abstract]

Schedule of Related Party Deposits [Table Text Block]

Following is a summary of activity for the years ended December 31, 2020 and 2019 of loans to executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director. Such loans were made in the normal course of business on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other customers and did not involve more than the normal risk of collectibility.

($ in thousands)	December 31, 2020		December 31, 2019
Balance at beginning of year	$	5,475	$	17,169
New loans and advances	2,013		1,376
Payments and other reductions	(1,771)		(13,070)
Balance at end of year	$	5,717	$	5,475

Following is a summary of activity for the year ended December 31, 2020, for deposit accounts of executive officers and directors, or to entities in which such individuals had beneficial interests as a shareholder, officer, or director.

($ in thousands)	December 31, 2020
Balance at beginning of year	$	9,763
Deposits	2,441
Withdrawals	(4,961)
Balance at end of year	$	7,243

Summary of Certificates of Deposit Maturities

Following is a summary of certificates of deposit maturities at December 31, 2020:

($ in thousands)	Brokered		Customer		Total
Less than 1 year	$	—	$	384,529	$	384,529
Greater than 1 year and less than 2 years	—		75,484		75,484
Greater than 2 years and less than 3 years	25,069		12,663		37,732
Greater than 3 years and less than 4 years	25,140		17,587		42,727
Greater than 4 years and less than 5 years	—		4,043		4,043
Greater than 5 years	—		5,580		5,580
	$	50,209	$	499,886	$	550,095

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Subordinated Debentures (Tables)

12 Months Ended

Dec. 31, 2020

Subordinated Borrowings [Abstract]

Schedule of Subordinated Debentures

The amounts and terms of each issuance of the Company’s subordinated debentures at December 31, 2020 and 2019 were as follows:

	Amount				Maturity Date	Initial Call Date (1)	Interest Rate
($ in thousands)	2020		2019
EFSC Clayco Statutory Trust I	$	3,196	$	3,196	December 17, 2033	December 17, 2008	Floats @ 3MO LIBOR + 2.85%
EFSC Capital Trust II	5,155		5,155		June 17, 2034	June 17, 2009	Floats @ 3MO LIBOR + 2.65%
EFSC Statutory Trust III	11,341		11,341		December 15, 2034	December 15, 2009	Floats @ 3MO LIBOR + 1.97%
EFSC Clayco Statutory Trust II	4,124		4,124		September 15, 2035	September 15, 2010	Floats @ 3MO LIBOR + 1.83%
EFSC Statutory Trust IV	10,310		10,310		December 15, 2035	December 15, 2010	Floats @ 3MO LIBOR + 1.44%
EFSC Statutory Trust V	4,124		4,124		September 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VI	14,433		14,433		March 30, 2037	March 30, 2012	Floats @ 3MO LIBOR + 1.60%
EFSC Capital Trust VII	4,124		4,124		December 15, 2037	December 15, 2012	Floats @ 3MO LIBOR + 2.25%
JEFFCO Stat Trust I (2)	7,752		7,886		February 22, 2031	February 22, 2011	Fixed @ 10.20%
JEFFCO Stat Trust II (2)	4,443		4,388		March 17, 2034	March 17, 2009	Floats @ 3MO LIBOR + 2.75%
Trinity Capital Trust III (2)	5,272		5,206		September 8, 2034	September 8, 2009	Floats @ 3MO LIBOR + 2.70%
Trinity Capital Trust IV	10,310		10,302		November 23, 2035	August 23, 2010	Fixed @ 6.88%
Trinity Capital Trust V (2)	7,706		7,543		December 15, 2036	September 15, 2011	Floats @ 3MO LIBOR + 1.65%
Total junior subordinated debentures	92,290		92,132
5.75% Fixed-to-floating rate subordinated notes	63,250		—		June 1, 2030	June 1, 2025	Fixed @ 5.75% until June 1, 2025, then floats @ Benchmark rate (3 month term SOFR) + 5.66%
4.75% Fixed-to-floating rate subordinated notes	50,000		50,000		November 1, 2026	November 1, 2021	Fixed @ 4.75% until November 1, 2021, then floats @ 3MO LIBOR + 3.387%
Debt issuance costs	(1,903)		(874)
Total fixed-to-floating rate subordinated notes	111,347		49,126
Total subordinated debentures and notes	$	203,637	$	141,258
(1) Callable each quarter after initial call date.
(2) Purchase accounting adjustments are reflected in the balance and also impact the effective interest rate.

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Federal Home Loan Bank Advances (Tables)

12 Months Ended

Dec. 31, 2020

Federal Home Loan Bank, Advances [Table Text Block]

The following table summarizes the type, maturity, and rate of the Company’s FHLB advances at December 31:

		2020				2019
($ in thousands)	Term	Outstanding Balance		Weighted Rate		Outstanding Balance		Weighted Rate
Non-amortizing fixed advance	Less than 1 year	$	—	—	%	$	170,000	1.73	%
Non-amortizing fixed advance	Greater than 1 year	50,000		1.56	%	52,406		1.62	%
Total FHLB advances		$	50,000	1.56	%	$	222,406	1.70	%

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Other Borrowings and Notes Payable (Tables)

12 Months Ended

Dec. 31, 2020

Debt Instrument [Line Items]

Schedule of Long-term Debt Instruments [Table Text Block]

Term Loan

In February 2019, the Company entered into a five year, $40.0 million unsecured term loan agreement (the “Term Loan”) with another bank with the proceeds primarily used to fund the company’s cash portion of the acquisition of Trinity. The interest rate is the one-month LIBOR plus 125 basis points.

A summary of the Term Loan is as follows:

	December 31,
($ in thousands)	2020			2019
Term Loan	$	30,000		$	34,286
Average balance during the year	32,123			30,810
Maximum balance outstanding at any month-end	34,286			40,000
Weighted average interest rate during the year	1.96		%	3.55		%
Average interest rate at December 31	1.44		%	3.00		%

Schedule of Line of Credit Facilities [Table Text Block]

Revolving Credit Line

In February 2016, the Company entered into a senior unsecured revolving credit agreement (the “Revolving Agreement”) with another bank. The Revolving Agreement has a one-year term, maturing on February 22, 2021. It is in process of renewal and allows for borrowings up to $25 million. The interest rate is the one-month LIBOR plus 125 basis points. The proceeds can be used for general corporate purposes. The Revolving Agreement is subject to ongoing compliance with a number of customary affirmative and negative covenants as well as specified financial covenants. 

A summary of the amounts drawn on the Revolving Agreement is as follows:

	December 31,
($ in thousands)	2019
Outstanding balance	$	—
Average balance during the year	323
Maximum balance outstanding at any month-end	2,000
Weighted average interest rate during the year	4.61		%
Average interest rate at December 31	—

Other Borrowings

Debt Instrument [Line Items]

Summary of Other Borrowings

A summary of securities sold under agreements to repurchase is as follows:

	December 31,
($ in thousands)	2020			2019
Securities sold under agreement to repurchase	$	271,081		$	230,886
Average balance during the year	206,338			169,179
Maximum balance outstanding at any month-end	271,081			230,886
Average interest rate during the year	0.23		%	0.69		%
Average interest rate at December 31	0.07		%	0.91		%

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Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2020

Regulated Operations [Abstract]

Schedule of Actual Capital Amounts and Ratios

The capital ratios are presented in the table below:

	December 31, 2020				December 31, 2019
	EFSC		Bank		EFSC		Bank		To Be Well-Capitalized		Minimum Ratio with CCB
Common Equity Tier 1 Capital to Risk Weighted Assets	10.9	%	12.5	%	9.9	%	11.7	%	6.5	%	7.0	%
Tier 1 Capital to Risk Weighted Assets	12.1	%	12.5	%	11.4	%	11.7	%	8.0	%	8.5	%
Total Capital to Risk Weighted Assets	14.9	%	13.7	%	12.9	%	12.4	%	10.0	%	10.5	%
Leverage Ratio (Tier 1 Capital to Average Assets)	10.0	%	10.3	%	10.1	%	10.3	%	5.0	%	4.0	%

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Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

The following table summarizes share-based compensation expense:

($ in thousands)	2020		2019		2018
Performance stock units	$	1,097	$	1,699	$	2,067
Restricted stock units	2,613		1,969		1,211
Employee stock purchase plan	468		364		174
Total share-based compensation expense	$	4,178	$	4,032	$	3,452

Outstanding Long Term Incentive Awards [Table Text Block]

Information related to the outstanding grants at December 31, 2020 is shown below:

($ in thousands)	2019 - 2021 Cycle		2020 - 2022 Cycle
Shares issuable at target	20,860		26,002
Maximum shares issuable	41,720		52,004
Unrecognized compensation cost	$	366	$	704
Weighted average grant date fair value	47.46		38.09

Schedule of Various Information

At December 31, 2020 and 2019, the Company has reserved the following shares of its authorized but unissued common stock for possible future issuance in connection with the following:

	December 31, 2020	December 31, 2019
Outstanding performance units (maximum issuance)	125,176	73,172
Outstanding RSU’s	157,428	117,369
Outstanding options and appreciation rights	—	28,300
2018 Stock Incentive Plan	339,691	521,573
Non-Management Director Plan	86,616	96,031
2018 Employee Stock Purchase Plan	635,890	694,085
Total	1,344,801	1,530,530

Summary of Employee Stock Option and SSARs Activity

Following is a summary of the SSAR activity for 2020.

($ in thousands, except per share data)	Shares	Weighted Average Exercise Price
Outstanding at December 31, 2019	28,300	$	10.14
Exercised	(28,300)	10.14
Outstanding at December 31, 2020	—	N/A

Summary of Restricted Stock Units Activity

A summary of the status of the Company’s RSU awards as of December 31, 2020 and changes during the year then ended is presented below

	Shares	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	117,369	$	45.86
Granted	88,759	39.63
Vested	(44,351)	45.68
Forfeited	(4,349)	44.24
Outstanding at December 31, 2020	157,428	$	42.44

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the changes in accumulated other comprehensive income (loss) after-tax by component:

($ in thousands)	Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities		Unamortized Gain (Loss) on Held-to-Maturity Securities		Net Unrealized Loss on Cash Flow Hedges		Total
Balance, December 31, 2017	$	(3,622)	$	(196)	$	—	$	(3,818)
Net change	(4,633)		3		—		(4,630)
Adjustment for change in accounting policies	(792)		(42)		—		(834)
Balance, December 31, 2018	(9,047)		(235)		—		(9,282)
Net change	29,226		(33)		(2,162)		27,031
Transfer from available-for-sale to held-to-maturity	(5,202)		5,202		—		—
Balance, December 31, 2019	14,977		4,934		(2,162)		17,749
Net change	23,627		(1,910)		(2,346)		19,371
Transfer from available-for-sale to held-to-maturity	(16,284)		16,284		—		—
Balance, December 31, 2020	$	22,320	$	19,308	$	(4,508)	$	37,120

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

The following table presents the pre-tax and after-tax changes in the components of other comprehensive income:

	2020						2019						2018
($ in thousands)	Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax		Pre-tax		Tax effect		After-tax
Change in unrealized gain (loss) on available-for-sale debt securities	$	31,798	$	7,854	$	23,944	$	38,764	$	9,575	$	29,189	$	(6,143)	$	(1,517)	$	(4,626)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities(a)	(421)		(104)		(317)		49		12		37		(9)		(2)		(7)
Reclassification of (gain) loss on held-to-maturity securities(b)	(2,537)		(627)		(1,910)		(44)		(11)		(33)		4		1		3
Change in unrealized loss on cash flow hedges arising during the period(b)	(7,898)		(1,951)		(5,947)		(3,004)		(742)		(2,262)		—		—		—
Reclassification of loss on cash flow hedges(b)	4,782		1,181		3,601		133		33		100		—		—		—
Total other comprehensive income (loss)	$	25,724	$	6,353	$	19,371	$	35,898	$	8,867	$	27,031	$	(6,148)	$	(1,518)	$	(4,630)

(a)The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations.

(b)The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations, except for a $3.2 million termination fee in 2020 recognized in noninterest expense.

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

Stock Options and SSARs

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Various Information

Various information related to the stock options and SSARs is shown below.

($ in thousands)	2020		2019		2018
Intrinsic value of option/SSAR exercises on date of exercise	$	597	$	407	$	2,469

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Various Information

Various information related to the RSUs is shown below.

($ in thousands)	2020		2019		2018
Total fair value at vesting date	$	1,702	$	1,067	$	1,544
Total unrecognized compensation cost for nonvested stock units	3,899		3,417		2,175
Expected years to recognize unearned compensation	1.9 years		1.9 years		2.0 years

Stock Plan for Non-Management Directors

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Various Information

Various information related to the Director Plan is shown below.

	2020		2019		2018
Shares granted	15,901		11,382		11,750
Weighted average fair value	$	30.28	$	41.63	$	50.74

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The components of income tax expense for the years ended December 31, are as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Current:
Federal	$	25,132	$	15,470	$	9,621
State and local	5,009		2,027		2,432
Total current	30,141		17,497		12,053
Deferred:
Federal	(10,651)		4,262		2,812
State and local	(1,927)		1,538		495
Total deferred	(12,578)		5,800		3,307
Total income tax expense	$	17,563	$	23,297	$	15,360

Schedule of Income Tax Rate Reconciliation

A reconciliation of expected income tax expense, computed by applying the statutory federal income tax rate in 2020, 2019, and 2018 to income before income taxes and the amounts reflected in the consolidated statements of operations is as follows:

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income tax expense at statutory rate	$	19,309	$	24,368	$	21,961
Increase (reduction) in income tax resulting from:
Tax-exempt interest income, net	(2,010)		(962)		(506)
State and local income taxes, net	3,254		2,816		2,423
Bank-owned life insurance, net	(778)		(628)		(452)
Non-deductible expenses	637		749		294
Tax benefit (expense) of LIHTC investments, net	(444)		(278)		(50)
Excess tax benefits	(175)		(526)		(1,631)
Federal tax credits	(1,327)		(913)		(4,627)
Subsidiary dividend timing election	—		—		(2,728)
Non-taxable donation to charitable foundation	—		(420)		—
Other, net	(903)		(909)		676
Total income tax expense	$	17,563	$	23,297	$	15,360

Schedule of Deferred Tax Assets and Deferred Tax Liabilities

The tax effect of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities is as follows:

	Year ended December 31,
($ in thousands)	2020		2019
Deferred tax assets:
Allowance for loan losses	$	34,031	$	10,692
Acquired loans	—		9,722
Loans held-for-sale	8,058		—
Other real estate	896		657
Deferred compensation	2,585		2,462
Accrued compensation	5,391		1,607
Net operating losses and tax credits	6,460		7,066
Other deferred tax assets	3,086		791
Total deferred tax assets	60,507		32,997
Deferred tax liabilities:
Acquired loans	3,413		—
Unrealized gains on securities	12,189		5,847
Intangible assets	7,800		7,432
Other deferred tax liabilities	4,369		2,407
Total deferred tax liabilities	27,771		15,686
Net deferred tax asset before valuation allowance	32,736		17,311
Less: valuation allowance	2,932		2,932
Net deferred tax asset	$	29,804	$	14,379

Schedule of Unrecognized Tax Benefits

The activity in the gross liability for unrecognized tax benefits was as follows:

($ in thousands)	2020		2019		2018
Balance at beginning of year	$	1,497	$	1,301	$	1,244
Additions based on tax positions related to the current year	395		401		367
Additions for tax positions of prior years	1,556		62		50
Settlements or lapse of statute of limitations	(291)		(267)		(360)
Balance at end of year	$	3,157	$	1,497	$	1,301

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Commitments (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Commitments

The contractual amounts of off-balance-sheet financial instruments as of December 31, 2020, and December 31, 2019, are as follows: 

(in thousands)	December 31, 2020		December 31, 2019
Commitments to extend credit	$	1,946,068	$	1,469,413
Letters of credit	50,971		47,969
State tax credits	24,473		28,035
Low-income housing tax credits	—		704
Limited partnership commitments	23,400		20,829

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Summary of Financial Instruments Measured at Fair Value on a Recurring Basis

The following table summarizes financial instruments measured at fair value on a recurring basis as of December 31, 2020 and 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value.

	December 31, 2020
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	15,161	$	—	$	15,161
Obligations of states and political subdivisions	—		344,232		—		344,232
Residential mortgage-backed securities	—		526,572		—		526,572
Corporate debt securities	—		14,998		—		14,998
U.S. Treasury Bills	—		11,466		—		11,466
Total securities available-for-sale	—		912,429		—		912,429
Derivative financial instruments	—		28,703		—		28,703
Total assets	$	—	$	941,132	$	—	$	941,132
Liabilities
Derivative financial instruments	$	—	$	34,967	$	—	$	34,967
Total liabilities	$	—	$	34,967	$	—	$	34,967

	December 31, 2019
($ in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Securities available-for-sale
Obligations of U.S. Government-sponsored enterprises	$	—	$	10,046	$	—	$	10,046
Obligations of states and political subdivisions	—		213,024		—		213,024
Residential mortgage-backed securities	—		902,021		—		902,021
U.S. Treasury Bills	—		10,226		—		10,226
Total securities available-for-sale	—		1,135,317		—		1,135,317
Other investments	—		—		—		—
Derivative financial instruments	—		11,055		—		11,055
Total assets	$	—	$	1,146,372	$	—	$	1,146,372
Liabilities
Derivative financial instruments	$	—	$	14,747	$	—	$	14,747
Total liabilities	$	—	$	14,747	$	—	$	14,747

Summary of Financial Instruments and Non-Financial Assets Measured at Fair Value on a Non-Recurring Basis

The following table presents financial instruments and non-financial assets measured at fair value on a non-recurring basis as of December 31, 2020 and 2019. 

	December 31, 2020
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2020
Impaired loans	$	1,247	$	—	$	—	$	1,247	$	4,486
Other real estate	3,600		—		—		3,600		1,000
Total	$	4,847	$	—	$	—	$	4,847	$	5,486

	December 31, 2019
	(1)		(1)		(1)		(1)
($ in thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total losses for the year ended December 31, 2019
Impaired loans	$	2,506	$	—	$	—	$	2,506	$	2,687
Total	$	7,450	$	—	$	—	$	7,450	$	2,687

(1) The amounts represent balances measured at fair value during the period and still held as of the reporting date.

Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets

Following is a summary of the carrying amounts and fair values of the Company’s financial instruments on the consolidated balance sheets at December 31, 2020 and 2019. This summary excludes certain financial assets and liabilities for which carrying value approximates fair value and financial instruments that are recorded at fair value on a recurring basis disclosed above. Financial instruments for which carrying values approximate fair value include cash and due from banks, federal funds sold, interest bearing deposits, accrued interest receivable/payable, demand, savings and money market deposits.

	December 31, 2020					December 31, 2019
($ in thousands)	Carrying Amount		Estimated fair value		Level	Carrying Amount		Estimated fair value		Level
Balance sheet assets
Securities held-to-maturity	$	487,610	$	501,523	Level 2	$	181,166	$	181,939	Level 2
Other investments	48,764		48,764		Level 2	38,044		38,044		Level 2
Loans held-for-sale	13,564		13,564		Level 2	5,570		5,570		Level 2
Loans, net	7,088,264		7,067,562		Level 3	5,271,049		5,205,651		Level 3
State tax credits, held-for-sale	36,853		39,925		Level 3	36,802		39,046		Level 3
Balance sheet liabilities
Certificates of deposit	$	550,095	$	553,946	Level 3	$	826,447	$	825,203	Level 3
Subordinated debentures and notes	203,637		192,889		Level 2	141,258		130,985		Level 2
FHLB advances	50,000		51,871		Level 2	222,406		221,402		Level 2
Other borrowings	301,081		301,081		Level 2	265,172		265,172		Level 2

Schedule of Estimated Fair Values of Financial Instruments Not Recorded at Fair Value on Balance Sheet

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Parent Company Only Condensed Financial Statements (Tables)

12 Months Ended

Dec. 31, 2020

Condensed Financial Information Disclosure [Abstract]

Condensed Balance Sheets

Condensed Balance Sheets

	December 31,
($ in thousands)	2020		2019
Assets
Cash	$	75,475	$	21,955
Investment in Bank	1,200,689		977,959
Investment in nonbank subsidiaries	9,778		9,795
Other assets	35,108		37,905
Total assets	$	1,321,050	$	1,047,614
Liabilities and Shareholders’ Equity
Subordinated debentures and notes	$	203,637	$	141,258
Notes payable	30,000		34,286
Accounts payable and other liabilities	8,439		4,885
Shareholders' equity	1,078,974		867,185
Total liabilities and shareholders' equity	$	1,321,050	$	1,047,614

Condensed Statements of Operations

Condensed Statements of Operations

	Year ended December 31,
($ in thousands)	2020		2019		2018
Income:
Dividends from Bank	$	37,000	$	60,000	$	30,000
Dividends from nonbank subsidiaries	1,400		1,500		1,200
Other	483		663		1,784
Total income	38,883		62,163		32,984
Expenses:
Interest expense-subordinated debentures and notes	9,885		7,507		5,798
Interest expense-notes payable	705		1,182		62
Other expenses	6,946		6,936		7,087
Total expenses	17,536		15,625		12,947
Income before taxes and equity in undistributed earnings of subsidiaries	21,347		46,538		20,037
Income tax benefit	3,448		3,478		3,482
Net income before equity in undistributed earnings of subsidiaries	24,795		50,016		23,519
Equity in undistributed earnings of subsidiaries	49,589		42,723		65,698
Net income and comprehensive income	$	74,384	$	92,739	$	89,217

Condensed Statements of Cash Flow

Condensed Statements of Cash Flows

	Year ended December 31,
($ in thousands)	2020		2019		2018
Cash flows from operating activities:
Net income	$	74,384	$	92,739	$	89,217
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Share-based compensation	4,178		4,032		3,452
Net income of subsidiaries	(87,989)		(104,223)		(94,898)
Dividends from subsidiaries	38,400		61,500		31,200
Other, net	3,588		(1,063)		(953)
Net cash provided by operating activities	32,561		52,985		28,018
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(1,243)		(36,015)		—
Purchases of other investments	(1,166)		(2,634)		(2,729)
Proceeds from distributions on other investments	765		1,271		1,911
Net cash used in investing activities	(1,644)		(37,378)		(818)
Cash flows from financing activities:
Proceeds from issuance of subordinated notes	61,953		—		—
Proceeds from notes payable	—		1,000		2,000
Repayments of notes payable	—		(3,000)		—
Proceeds from issuance of long-term debt	—		40,000		—
Repayment of long-term debt	(4,286)		(5,714)		—
Cash dividends paid	(19,795)		(16,569)		(10,845)
Payments for the repurchase of common stock	(15,347)		(15,526)		(19,387)
Payments for the issuance of equity instruments, net	78		(212)		(2,576)
Net cash provided by (used in) financing activities	22,603		(21)		(30,808)
Net increase (decrease) in cash and cash equivalents	53,520		15,586		(3,608)
Cash and cash equivalents, beginning of year	21,955		6,369		9,977
Cash and cash equivalents, end of year	$	75,475	$	21,955	$	6,369
Supplemental disclosures of cash flow information:
Noncash transactions:
Common shares issued in connection with acquisitions	$	167,035	$	171,885	$	—

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Quarterly Condensed Financial Information (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The following table presents unaudited quarterly financial information for the periods indicated:

	2020
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	84,113	$	70,787	$	73,191	$	76,688
Interest expense	6,667		7,433		7,358		13,320
Net interest income	77,446		63,354		65,833		63,368
Provision for credit losses	9,463		14,080		19,591		22,264
Net interest income after provision for loan losses	67,983		49,274		46,242		41,104
Noninterest income	18,506		12,629		9,960		13,408
Noninterest expense	51,050		39,524		37,912		38,673
Income before income tax expense	35,439		22,379		18,290		15,839
Income tax expense	6,508		4,428		3,656		2,971
Net income	$	28,931	$	17,951	$	14,634	$	12,868
Earnings per common share:
Basic	$	1.00	$	0.68	$	0.56	$	0.49
Diluted	1.00		0.68		0.56		0.48
	2019
($ in thousands, except per share data)	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter
Interest income	$	77,238	$	81,078	$	79,201	$	67,617
Interest expense	15,625		18,032		17,486		15,274
Net interest income	61,613		63,046		61,715		52,343
Provision for credit losses	1,341		1,833		1,722		1,476
Net interest income after provision for loan losses	60,272		61,213		59,993		50,867
Noninterest income	14,418		13,564		11,964		9,230
Noninterest expense	38,354		38,239		49,054		39,838
Income before income tax expense	36,336		36,538		22,903		20,259
Income tax expense	7,246		7,469		4,479		4,103
Net income	$	29,090	$	29,069	$	18,424	$	16,156
Earnings per common share:
Basic	$	1.10	$	1.09	$	0.69	$	0.68
Diluted	1.09		1.08		0.68		0.67

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Leases Lease Cost (Tables)

12 Months Ended

Dec. 31, 2020

Lessee, Lease, Description [Line Items]

Assets And Liabilities, Lessee [Table Text Block]

Supplemental balance sheet information related to leases was as follows:

	As of
($ in thousands)	December 31, 2020			December 31, 2019
Operating lease right-of-use assets, included in other assets	$	13,636		$	14,843
Operating lease liabilities, included in other liabilities	14,152			15,461
Operating leases
Weighted average remaining lease term	5 years			6 years
Weighted average discount rate	2.5		%	2.7		%

Lease, Cost [Table Text Block]

	For the twelve months ended
($ in thousands)	December 31, 2020		December 31, 2019
Operating lease cost	$	3,207	$	3,301
Short-term lease cost	201		288
Total lease cost	$	3,408	$	3,589

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturities of operating lease liabilities were as follows:

($ in thousands)
Year	Amount
2021	$	4,043
2022	2,988
2023	2,622
2024	2,190
2025	978
Thereafter	2,266
Total operating lease liabilities, payments	15,087
Less: present value adjustment	935
Operating lease liabilities	$	14,152

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Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Operating Lease, Right-of-Use Asset		$ 13,636	$ 14,843
Number of reportable segments | segment		1
Required reserves on deposits maintained			9,700
Operating Lease, Liability		$ 14,152	$ 15,461
sba loans receivable		296,000
Servicing Asset		5,700
Accrued interest receivable		$ 31,100
Furniture, Fixtures and Equipment [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life		3 years
Furniture, Fixtures and Equipment [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life		10 years
Building and Leasehold Improvements [Member] | Minimum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life		10 years
Building and Leasehold Improvements [Member] | Maximum
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life		40 years
Software [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life		3 years
Core Deposits [Member]
Property, Plant and Equipment [Line Items]
Finite-lived intangible assets useful life	10 years	10 years
State and Local Jurisdiction [Member]
Property, Plant and Equipment [Line Items]
Right to receive state tax credit at agreed upon rates		10 years

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Summary of Significant Accounting Policies - Adoption of New Accounting Policies (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		$ 5,314,337
Allowance for credit losses on loans		43,288
Allowance for credit losses on held-to-maturity debt securities		0
Deferred tax asset		14,851
Reserve for unfunded commitments		430
Retained earnings	$ 417,212	$ 380,737
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	7,091
Allowance for credit losses on loans	28,387
Allowance for credit losses on held-to-maturity debt securities	303
Deferred tax asset	5,898
Reserve for unfunded commitments	2,413
Retained earnings	(18,114)
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	5,321,428
Allowance for credit losses on loans	71,675
Allowance for credit losses on held-to-maturity debt securities	303
Deferred tax asset	20,749
Reserve for unfunded commitments	2,843
Retained earnings	$ 362,623

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Acquisitions & Divestitures - Narrative (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Nov. 12, 2020 USD ($) $ / shares shares	Mar. 08, 2019 USD ($) office $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares	Mar. 07, 2019 $ / shares
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Share Price | $ / shares	$ 33.56
Business Acquisition, Transaction Costs			$ 4,200
Cash, Cash Equivalents, and Federal Funds Sold			537,703	$ 167,256
Interest-earning deposits greater than 90 days			7,626	3,730
Securities available-for-sale			912,429	1,135,317
Loans and Leases Receivable, Net Amount			7,088,264	5,271,049
Fixed assets, net			53,169	60,013
Accrued interest receivable			31,100
Intangible assets, net			23,084	26,076
Deposits			7,985,389	5,771,023
Subordinated debentures and notes			203,637	141,258
Other liabilities			132,489	66,747
Goodwill			260,567	210,344	$ 117,345
Merger Related Expenses			4,174	17,969	1,271
As Recorded by Acquiree [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, Cash Equivalents, and Federal Funds Sold		$ 13,899
Interest-earning deposits greater than 90 days		100
Securities available-for-sale		428,715
Loans and Leases Receivable, Net Amount		705,057
Other Real Estate		5,284
Other Investments		6,673
Fixed assets, net		27,586
Accrued interest receivable		3,997
Intangible assets, net		0
Deferred Tax Assets, State Taxes		10,708
Other assets		35,045
Total assets acquired		1,237,064
Deposits		1,081,151
Subordinated debentures and notes		26,806
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances		6,800
Accrued interest payable		370
Other liabilities		5,842
Total Liabilities Assumed		1,120,969
Net assets acquired (assumed)		116,095
Adjustments associated with acquisition [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, Cash Equivalents, and Federal Funds Sold		0
Interest-earning deposits greater than 90 days		0
Securities available-for-sale		(619)
Loans and Leases Receivable, Net Amount		(20,743)
Other Real Estate		(2,059)
Other Investments		0
Fixed assets, net		(300)
Accrued interest receivable		0
Intangible assets, net		23,066
Deferred Tax Assets, State Taxes		(2,386)
Other assets		(1,484)
Total assets acquired		(4,525)
Deposits		36
Subordinated debentures and notes		(3,972)
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances		171
Accrued interest payable		0
Other liabilities		(827)
Total Liabilities Assumed		(4,592)
Net assets acquired (assumed)		$ 67
Trinity Capital Corporation [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Banking Offices | office		6
Business Acquisition, Share Price | $ / shares		$ 1.84
Business Acquisition, Equity Interest Issued or Issuable Per Acquired Share		0.1972
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares		4,000,000.0
Cash		$ 37,275
Share Price | $ / shares						$ 43.07
Total consideration paid		209,160
Business Acquisition, Transaction Costs			18,000		1,300
Cash, Cash Equivalents, and Federal Funds Sold		13,899
Business Acquisition, Pro Forma Revenue				296,677	286,076
Business Acquisition, Pro Forma Net Income (Loss)				$ 107,626	$ 85,579
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares				$ 4.11	$ 3.14
Interest-earning deposits greater than 90 days		100
Securities available-for-sale		428,096
Loans and Leases Receivable, Net Amount		684,314
Other Real Estate		3,225
Other Investments		6,673
Fixed assets, net		27,286
Accrued interest receivable		3,997
Intangible assets, net		23,066
Deferred Tax Assets, State Taxes		8,322
Other assets		33,561
Total assets acquired		1,232,539
Deposits		1,081,187
Subordinated debentures and notes		22,834
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances		6,971
Accrued interest payable		370
Other liabilities		5,015
Total Liabilities Assumed		1,116,377
Net assets acquired (assumed)		116,162
Common stock		171,885
Goodwill		$ 92,998
Seacoast Commerce Banc Holding [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business Acquisition, Equity Interest Issued or Issuable Per Acquired Share	0.5061
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	5,000,000.0
Cash			1,630
Total consideration paid	$ 169,000		168,665
Business Acquisition, Pro Forma Revenue			381,914	$ 355,500
Business Acquisition, Pro Forma Net Income (Loss)			$ 93,918	$ 86,888
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares			$ 3.00	$ 2.79
Common stock			$ 167,035
Goodwill	$ 35,395		$ 50,223
Core Deposits [Member] | Seacoast Commerce Banc Holding [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years

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Acquisitions & Divestitures - Summary of Balance Sheet Amounts Relative to Branches Sold (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 12, 2020	Mar. 08, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, Cash Equivalents, and Federal Funds Sold	$ 537,703				$ 167,256				$ 537,703	$ 167,256
Loans and Leases Receivable, Net Amount	7,088,264				5,271,049				7,088,264	5,271,049
Fixed assets, net	53,169				60,013				53,169	60,013
Accrued interest receivable	31,100								31,100
Goodwill	260,567				210,344				260,567	210,344	$ 117,345
Intangible assets, net	23,084				26,076				23,084	26,076
Deposits	7,985,389				5,771,023				7,985,389	5,771,023
Other borrowings	271,081				230,886				271,081	230,886
Investments trust preferred securities	2,900								2,900
Other liabilities	132,489				66,747				132,489	66,747
Net income	28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	74,384	92,739	$ 89,217
Seacoast Commerce Banc Holding [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill	$ 50,223								50,223			$ 35,395
Business Acquisition, Pro Forma Revenue									381,914	355,500
Business Acquisition, Pro Forma Net Income (Loss)									$ 93,918	$ 86,888
Business Acquisition, Pro Forma Earnings Per Share, Diluted									$ 3.00	$ 2.79
Adjustments associated with acquisition [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash, Cash Equivalents, and Federal Funds Sold													$ 0
Loans and Leases Receivable, Net Amount													(20,743)
Other Real Estate													(2,059)
Other Investments													0
Fixed assets, net													(300)
Accrued interest receivable													0
Intangible assets, net													23,066
Deferred Tax Assets, State Taxes													(2,386)
Other assets													(1,484)
Total assets acquired													(4,525)
Deposits													36
Accrued interest payable													0
Other liabilities													(827)
Total Liabilities Assumed													(4,592)
Net assets acquired (assumed)													$ 67

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Acquisitions & Divestitures - Seacoast Acquisition (Details) - USD ($) $ in Thousands		2 Months Ended	12 Months Ended
	Nov. 12, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Goodwill		$ 260,567	$ 260,567	$ 210,344	$ 117,345
Seacoast Commerce Banc Holding [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Cash and cash equivalents	$ 63,744	63,744	63,744
Adjustments, cash		0
Loans	1,160,602	1,190,441	1,190,441
Adjustments, loans		29,839
Other investments	12,100	12,100	12,100
Adjustments, other investments		0
Fixed assets	925	650	650
Adjustments, fixed assets		(275)
Accrued interest receivable	4,511	4,511	4,511
Adjustments, accrued interest receivable		0
goodwill elimination balance		0	0
Goodwill	35,395	50,223	50,223
Adjustments, goodwill		(35,395)
Intangible assets	1,513	2,681	2,681
Adjustments, intangible assets		1,168
Deferred tax assets	12,009	3,322	3,322
Adjustments, deferred tax assets		(8,687)
Other assets	35,025	34,588	34,588
Adjustments, other assets		(437)
Total assets acquired	1,325,824	1,312,037	1,312,037
Adjustments, assets		(13,787)
Deposits	1,081,034	1,081,006	1,081,006
Adjustments, deposits		(28)
PPPLF advances	86,096	86,096	86,096
Adjustments, FHLB advances		0
Accrued interest payable	185	185	185
Adjustments, accrued interest payable		0
Other liabilities	25,211	26,308	26,308
Adjustments, other liabilities		1,097
Total liabilities assumed	1,192,526	1,193,595	1,193,595
Adjustments, liabilities		1,069
Net assets acquired	133,298	118,442	118,442
Adjustments, net assets acquired		$ (14,856)
Cash			1,630
Common stock			167,035
Total consideration paid	$ 169,000		$ 168,665

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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share
Net income	$ 28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	$ 74,384	$ 92,739	$ 89,217
Impact of assumed conversions
Weighted average common shares outstanding (in shares)									26,954,000	26,045,000	23,100,000
Additional dilutive common stock equivalents (in shares)									35,000	114,000	189,000
Weighted average diluted common shares outstanding (in shares)									26,989,000	26,159,000	23,289,000
Basic earnings per common share (in dollars per share)	$ 1.00	$ 0.68	$ 0.56	$ 0.49	$ 1.10	$ 1.09	$ 0.69	$ 0.68	$ 2.76	$ 3.56	$ 3.86
Diluted earnings per common share (in dollars per share)	$ 1.00	$ 0.68	$ 0.56	$ 0.48	$ 1.09	$ 1.08	$ 0.68	$ 0.67	$ 2.76	$ 3.55	$ 3.83
Common stock equivalents excluded from earnings per share calculations due to anti-dilutive effect (in shares)									156,000	21,000	0
Convertible Debt Securities
Debt Instrument, Interest Rate, Stated Percentage [Abstract]
Convertible trust preferred securities, interest rate, stated percentage	9.00%				9.00%				9.00%	9.00%	9.00%

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Investments - Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 488,059	$ 181,166
Gross Unrealized Gains	13,960	973
Gross Unrealized Losses	(496)	(200)
Fair Value	501,523	181,939
Debt Securities, Held-to-maturity, Allowance for Credit Loss	449
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	882,682	1,115,323
Gross Unrealized Gains	30,104	21,548
Gross Unrealized Losses	(357)	(1,554)
Fair Value	912,429	1,135,317
debt securities, held to maturity, net of alloawance for credit losses	487,610	181,166
Corporate Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	126,993	123,116
Gross Unrealized Gains	8,851	128
Gross Unrealized Losses	0	(200)
Fair Value	135,844	123,044
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,750
Gross Unrealized Gains	248
Gross Unrealized Losses	0
Fair Value	14,998
Obligations of U.S. Government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,978	9,954
Gross Unrealized Gains	186	92
Gross Unrealized Losses	(3)	0
Fair Value	15,161	10,046
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	248,324	11,704
Gross Unrealized Gains	2,814	170
Gross Unrealized Losses	0	0
Fair Value	251,138	11,874
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	335,271	207,269
Gross Unrealized Gains	8,994	6,118
Gross Unrealized Losses	(33)	(363)
Fair Value	344,232	213,024
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	112,742	46,346
Gross Unrealized Gains	2,295	675
Gross Unrealized Losses	(496)	0
Fair Value	114,541	47,021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	506,703	888,129
Gross Unrealized Gains	20,190	15,083
Gross Unrealized Losses	(321)	(1,191)
Fair Value	526,572	902,021
US Treasury Bill Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,980	9,971
Gross Unrealized Gains	486	255
Gross Unrealized Losses	0	0
Fair Value	$ 11,466	$ 10,226

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Investments - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available for sale, Amortized Cost
Due in one year or less	$ 12,048
Due after one year through five years	21,977
Due after five years through ten years	19,711
Due after ten years	322,243
Agency mortgage-backed securities	506,703
Amortized Cost	882,682	$ 1,115,323
Available for sale, Estimated Fair Value
Due in one year or less	12,240
Due after one year through five years	22,629
Due after five years through ten years	20,105
Due after ten years	330,883
Agency mortgage-backed securities	526,572
Securities available-for-sale	912,429	1,135,317
Held to maturity, Amortized Cost
Due in one year or less	0
Due after one year through five years	11,589
Due after five years through ten years	132,613
Due after ten years	231,115
Agency mortgage-backed securities	112,742
Amortized Cost	488,059	181,166
Held to maturity, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	12,040
Due after five years through ten years	141,252
Due after ten years	233,690
Agency mortgage-backed securities	114,541
Held to maturity, fair value	$ 501,523	$ 181,939

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Investments - Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 75,062	$ 255,984
Less than 12 months, unrealized losses	357	(1,319)
12 months or more, fair value	0	41,491
12 months or more, unrealized losses	0	(435)
Total, fair value	75,062	297,475
Total, unrealized losses	357	(1,754)
Obligations of U.S. Government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	4,997
Less than 12 months, unrealized losses	3
12 months or more, fair value	0
12 months or more, unrealized losses	0
Total, fair value	4,997
Total, unrealized losses	3
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	4,079	56,327
Less than 12 months, unrealized losses	33	363
12 months or more, fair value	0	0
12 months or more, unrealized losses	0	0
Total, fair value	4,079	56,327
Total, unrealized losses	33	363
Agency mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	65,986	131,693
Less than 12 months, unrealized losses	321	756
12 months or more, fair value	0	41,491
12 months or more, unrealized losses	0	435
Total, fair value	65,986	173,184
Total, unrealized losses	$ 321	1,191
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		67,964
Less than 12 months, unrealized losses		200
12 months or more, fair value		0
12 months or more, unrealized losses		0
Total, fair value		67,964
Total, unrealized losses		$ 200

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Investments - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Gross gains realized	$ 421	$ 400	$ 9
Gross losses realized	0	(449)	0
Proceeds from sales	$ 20,221	$ 357,976	$ 1,451

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Investments - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) number_of_securities	Dec. 31, 2019 USD ($) number_of_securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 882,682	$ 1,115,323
Other investments	$ 48,764	$ 38,044
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | number_of_securities	30	73
Fair Value	$ 912,429	$ 1,135,317
Gross Unrealized Gains	$ 30,104	21,548
Maximum percentage of shareholders' equity security holdings held of one issuer	10.00%
Available-for-sale securities pledged as collateral, fair value	$ 525,800	484,800
Mortgage-backed securities, weighted average life	3 years
accrued interest receivable, held to maturity securities	$ 3,600
Debt Securities, Held-to-maturity, Allowance for Credit Loss	449
Des Moines
Debt Securities, Available-for-sale [Line Items]
Other investments	10,800	15,700
Reclassified to Held to Maturity [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	331,000	116,300
Fair Value	352,600	123,200
Gross Unrealized Gains	$ 25,600	$ 6,600

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Portfolio Loans - Summary of Portfolio Loans by Category (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		$ 5,314,337
Non-Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 7,241,074	5,316,953
Unearned loan fees, net	(16,139)	(2,616)
Loans, including unearned loan fees	7,224,935	5,314,337
Non-Covered Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	3,100,299	2,345,823
Non-Covered Loans | Commercial - investor owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	1,589,419	1,262,981
Non-Covered Loans | CRE - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	1,498,408	678,522
Non-Covered Loans | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	546,686	449,380
Non-Covered Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	319,179	355,192
Non-Covered Loans | Total real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	3,953,692	2,820,855
Non-Covered Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 187,083	134,941
Non-Covered Loans | Residential Real Estate Financing Receivable, Including Loans Previously Reported as PCI
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		366,261
Non-Covered Loans | Construction and Land Development Financing Receivable, Including Loans Previously Reported as PCI
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		457,273
Non-Covered Loans | Commercial Real Estate Owner Occupied Financing Receivable, Including Loans Previously Reported as PCI
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		697,437
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable, Including Loans Previously Reported as PCI
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		1,299,884
Non-Covered Loans | Commercial and Industrial Portfolio Segment, Including Loans Previously Reported as PCI
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees		$ 2,361,157

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Portfolio Loans - Summary of Loans to Executive Officers and Directors (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 5,475	$ 17,169
New loans and advances	2,013	1,376
Payments and other reductions	(1,771)	(13,070)
Balance at end of year	$ 5,717	$ 5,475

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Portfolio Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 12, 2020
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	$ 43,288	$ 43,288
Balance, end of year			$ 43,288
Non-Covered Loans
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	42,567	42,567	42,295	$ 38,166
CECL adoption	28,387
PCD loans immediately charged off	(1,680)	(63,400)	(6,700)
Provision for loan losses		63,379	6,682	9,813
Initial Allowance on Acquired PCD Loans					$ 3,524
Charge-offs		(6,739)	(8,594)	(7,976)
Recoveries		6,512	2,184	2,292
Balance, end of year	69,995	136,671	42,567	42,295
Financing Receivable, Allowance For Credit Losses, Organic			42,567
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			721
Non-Covered Loans | Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	27,296	27,296	29,039	26,406
CECL adoption	6,494
PCD loans immediately charged off	0
Provision for loan losses		28,373	4,801	8,394
Initial Allowance on Acquired PCD Loans					23
Charge-offs		(5,381)	(6,882)	(6,894)
Recoveries		1,848	338	1,133
Balance, end of year	33,949	58,812	27,296	29,039
Financing Receivable, Allowance For Credit Losses, Organic			27,296
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			159
Non-Covered Loans | Commercial - investor owned
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	5,935	5,935	4,683	3,890
CECL adoption	10,726
PCD loans immediately charged off	(5)
Provision for loan losses		11,037	1,708	709
Initial Allowance on Acquired PCD Loans					2,026
Charge-offs		(498)	(551)	0
Recoveries		2,841	95	84
Balance, end of year	16,656	32,062	5,935	4,683
Financing Receivable, Allowance For Credit Losses, Organic			5,935
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			0
Non-Covered Loans | CRE - owner occupied
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	4,873	4,873	4,239	3,308
CECL adoption	2,598
PCD loans immediately charged off	(57)
Provision for loan losses		7,845	673	1,216
Initial Allowance on Acquired PCD Loans					1,427
Charge-offs		(30)	(58)	(313)
Recoveries		356	19	28
Balance, end of year	7,414	17,012	4,873	4,239
Financing Receivable, Allowance For Credit Losses, Organic			4,873
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			0
Non-Covered Loans | Construction and land development
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	2,472	2,472	1,987	1,487
CECL adoption	5,183
PCD loans immediately charged off	(217)
Provision for loan losses		13,438	(237)	97
Initial Allowance on Acquired PCD Loans					45
Charge-offs		(31)	(54)	(56)
Recoveries		384	776	459
Balance, end of year	7,577	21,413	2,472	1,987
Financing Receivable, Allowance For Credit Losses, Organic			2,472
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			139
Non-Covered Loans | Residential real estate
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	1,280	1,280	1,616	2,237
CECL adoption	3,470
PCD loans immediately charged off	(1,401)
Provision for loan losses		674	(330)	(583)
Initial Allowance on Acquired PCD Loans					3
Charge-offs		(408)	(667)	(546)
Recoveries		967	661	508
Balance, end of year	3,349	4,585	1,280	1,616
Financing Receivable, Allowance For Credit Losses, Organic			1,280
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			0
Non-Covered Loans | Other
Allowance for Loan Losses [Roll Forward]
Balance, beginning of year	711	711	731	838
CECL adoption	(84)
PCD loans immediately charged off	0
Provision for loan losses		2,012	67	(20)
Initial Allowance on Acquired PCD Loans					$ 0
Charge-offs		(391)	(382)	(167)
Recoveries		116	295	80
Balance, end of year	$ 1,050	$ 2,787	711	$ 731
Financing Receivable, Allowance For Credit Losses, Organic			711
Financing Receivable, Allowance For Credit Losses, Purchased Credit Impaired			$ 423

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Portfolio Loans - Collateral Dependent Loans (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 20,835
Commercial Real Estate | Commercial and industrial | Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	8,316
Commercial Real Estate | Residential | Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Commercial Real Estate | Unallocated Financing Receivables | Other
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Commercial Real Estate | Commercial Portfolio Segment | Commercial - investor owned
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	9,579
Commercial Real Estate | Commercial Portfolio Segment | Commercial - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	2,940
Residential
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	4,135
Residential | Commercial and industrial | Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Residential | Residential | Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	4,135
Residential | Unallocated Financing Receivables | Other
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Residential | Commercial Portfolio Segment | Commercial - investor owned
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Residential | Commercial Portfolio Segment | Commercial - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Blanket Lien
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	394
Blanket Lien | Commercial and industrial | Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	394
Blanket Lien | Residential | Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Blanket Lien | Unallocated Financing Receivables | Other
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Blanket Lien | Commercial Portfolio Segment | Commercial - investor owned
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Blanket Lien | Commercial Portfolio Segment | Commercial - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Other Collateral
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	17
Other Collateral | Commercial and industrial | Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Other Collateral | Residential | Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Other Collateral | Unallocated Financing Receivables | Other
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	17
Other Collateral | Commercial Portfolio Segment | Commercial - investor owned
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	0
Other Collateral | Commercial Portfolio Segment | Commercial - owner occupied
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 0

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Portfolio Loans - Summary of Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance December 31, 2020
Total			$ 43,288
Loans - Ending balance:
Loans, including unearned loan fees	$ 7,224,935		5,314,337
Total			5,314,337
Non-Covered Loans
Balance December 31, 2020
Total	136,671	$ 69,995	42,567	$ 42,295	$ 38,166
Loans - Ending balance:
Loans, including unearned loan fees			5,224,048
Total	7,241,074		5,316,953
Non-Covered Loans | Commercial and industrial
Balance December 31, 2020
Total	58,812	33,949	27,296	29,039	26,406
Loans - Ending balance:
Total	3,100,299		2,345,823
Non-Covered Loans | Commercial - investor owned
Balance December 31, 2020
Total	32,062	16,656	5,935	4,683	3,890
Loans - Ending balance:
Total	1,589,419		1,262,981
Non-Covered Loans | CRE - owner occupied
Balance December 31, 2020
Total	17,012	7,414	4,873	4,239	3,308
Loans - Ending balance:
Total	1,498,408		678,522
Non-Covered Loans | Construction and land development
Balance December 31, 2020
Total	21,413	7,577	2,472	1,987	1,487
Loans - Ending balance:
Total	546,686		449,380
Non-Covered Loans | Residential real estate
Balance December 31, 2020
Total	4,585	3,349	1,280	1,616	2,237
Loans - Ending balance:
Total	319,179		355,192
Non-Covered Loans | Other
Balance December 31, 2020
Total	2,787	$ 1,050	711	$ 731	$ 838
Loans - Ending balance:
Loans, including unearned loan fees			132,150
Total	$ 187,083		$ 134,941

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Portfolio Loans - Summary of Portfolio Loans Individually Evaluated for Impairment by Category (Details) - Non-Covered Loans - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Total Recorded Investment	$ 38,507	$ 26,425
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	8,316	7,654
Total Recorded Investment	21,770	22,578
Commercial - investor owned
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	716	811
Total Recorded Investment	9,579	2,303
CRE - owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	6,024	213
Total Recorded Investment	2,940	213
Construction and land development
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance		1,120
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	3,190	0
Total Recorded Investment	4,189	1,330
Other
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	18,246	9,798
Total Recorded Investment	$ 29	$ 1

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Portfolio Loans - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
financing receivable, paycheck protection program		$ 709,900
financing receivable, paycheck protection program, net of deferred fees		698,600
financing recievable, paycheck protection program, unearned fees		11,300
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available		2,500,000
net premium, acquired loans		16,100
net discount, acquired loans		36,000
Allowance for credit losses on loans			$ 43,288
financing receivable, amount eligible for deferred payment		687,800
Financing Receivable, Amount Eligible for Deferral of Both Principal and Interest		340,000
financing receivable, amount eligible for deferral of principal only		347,800
Financing Receivable, Amount Still in Deferral Status		63,000
Loans and Leases Receivable, Deferred Income		4,100
Allowance for Credit Losses, Qualitative Adjustment		24,000
Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans		28,387
enterprise value lending portfolio niche segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Credit Losses, Qualitative Adjustment		11,100
Non-Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	$ 69,995	136,671	42,567	$ 42,295	$ 38,166
CECL adoption	28,387
Financing Receivable, Credit Loss, Expense (Reversal)	1,680	63,400	$ 6,700
financing receivable, allowance for credit loss, threshold of loans written off	$ 100
Non-Covered Loans | Cumulative Effect, Period of Adoption, Adjustment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans		5,900
Non-Covered Loans | enterprise value lending portfolio niche segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans		19,000
Unadvanced Commitment on Impaired Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Estimated losses attributable to unadvanced commitments on impaired loans		$ 5,700

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Portfolio Loans - Summary of Recorded Investment in Impaired Portfolio Loans by Category (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Non-accrual	$ 20,835
Residential
Financing Receivable, Past Due [Line Items]
Non-accrual	4,135
Commercial and industrial | Commercial Real Estate | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non-accrual	8,316
Commercial and industrial | Residential | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non-accrual	0
Non-Covered Loans
Financing Receivable, Past Due [Line Items]
Non-accrual	34,818	$ 26,096
Restructured, accruing	3,559	79
Loans over 90 days past due and still accruing interest	130	250
Total Recorded Investment	38,507	26,425
Non-Covered Loans | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non-accrual	18,158	22,328
Restructured, accruing	3,482	0
Loans over 90 days past due and still accruing interest	130	250
Total Recorded Investment	21,770	22,578
Recorded Investment With No Allowance	8,316	7,654
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Past Due [Line Items]
Non-accrual	9,579	2,303
Restructured, accruing	0	0
Loans over 90 days past due and still accruing interest	0	0
Total Recorded Investment	9,579	2,303
Recorded Investment With No Allowance	716	811
Non-Covered Loans | CRE - owner occupied
Financing Receivable, Past Due [Line Items]
Non-accrual	2,940	213
Restructured, accruing	0	0
Loans over 90 days past due and still accruing interest	0	0
Total Recorded Investment	2,940	213
Recorded Investment With No Allowance	6,024	213
Non-Covered Loans | Construction and land development
Financing Receivable, Past Due [Line Items]
Recorded Investment With No Allowance		1,120
Non-Covered Loans | Residential real estate
Financing Receivable, Past Due [Line Items]
Non-accrual	4,112	1,251
Restructured, accruing	77	79
Loans over 90 days past due and still accruing interest	0	0
Total Recorded Investment	4,189	1,330
Recorded Investment With No Allowance	3,190	0
Non-Covered Loans | Other
Financing Receivable, Past Due [Line Items]
Non-accrual	29	1
Restructured, accruing	0	0
Loans over 90 days past due and still accruing interest	0	0
Total Recorded Investment	29	1
Recorded Investment With No Allowance	$ 18,246	$ 9,798

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Portfolio Loans - Summary of Recorded Investment by Category for Portfolio Loans Restructured (Details) - Non-Covered Loans $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	6	3
Pre-Modification Outstanding Recorded Balance	$ 7,819	$ 520
Post-Modification Outstanding Recorded Balance	$ 7,819	$ 520
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	3	0
Pre-Modification Outstanding Recorded Balance	$ 7,447	$ 0
Post-Modification Outstanding Recorded Balance	$ 7,447	$ 0
CRE - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	0	1
Pre-Modification Outstanding Recorded Balance	$ 0	$ 188
Post-Modification Outstanding Recorded Balance	$ 0	$ 188
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	3	2
Pre-Modification Outstanding Recorded Balance	$ 372	$ 332
Post-Modification Outstanding Recorded Balance	$ 372	$ 332

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Portfolio Loans - Summary of Recorded Investment by Category for Portfolio Loans Restructured and Subsequently Defaulted (Details) - Non-Covered Loans $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) loan
Schedule of Financing Receivables, Troubled Debt Restructurings - Suibsequent Defaults [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | loan	2
Recorded Balance | $	$ 352
Commercial and industrial
Schedule of Financing Receivables, Troubled Debt Restructurings - Suibsequent Defaults [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | loan	2
Recorded Balance | $	$ 352

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Portfolio Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - Non-Covered Loans - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	$ 13,529	$ 11,640
Financing Receivable, Recorded Investment, 90 Days Past Due	29,044	10,512
Total Past Due	42,573	22,152
Current	7,182,362	5,201,896
Financing Receivable, after Deferred Income Offset	7,224,935
Commercial and industrial
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	8,652	5,679
Financing Receivable, Recorded Investment, 90 Days Past Due	12,928	8,212
Total Past Due	21,580	13,891
Current	3,067,415	2,331,932
Financing Receivable, after Deferred Income Offset	3,088,995
Commercial - investor owned
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	734	321
Financing Receivable, Recorded Investment, 90 Days Past Due	9,301	1,492
Total Past Due	10,035	1,813
Current	1,579,384	1,261,168
Financing Receivable, after Deferred Income Offset	1,589,419
CRE - owner occupied
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	328	562
Financing Receivable, Recorded Investment, 90 Days Past Due	4,647	213
Total Past Due	4,975	775
Current	1,493,433	677,747
Financing Receivable, after Deferred Income Offset	1,498,408
Construction and land development
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	13	308
Financing Receivable, Recorded Investment, 90 Days Past Due	0	0
Total Past Due	13	308
Current	546,673	449,072
Financing Receivable, after Deferred Income Offset	546,686
Residential real estate
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	2,071	4,689
Financing Receivable, Recorded Investment, 90 Days Past Due	2,118	595
Total Past Due	4,189	5,284
Current	314,990	349,908
Financing Receivable, after Deferred Income Offset	319,179
Other
Financing Receivable, Past Due [Line Items]
30-89 Days Past Due	1,731	81
Financing Receivable, Recorded Investment, 90 Days Past Due	50	0
Total Past Due	1,781	81
Current	180,467	$ 132,069
Financing Receivable, after Deferred Income Offset	$ 182,248

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Portfolio Loans - Summary of Term Loans by Origination Year (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 5,314,337
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 1,453,800
2019	479,317
2018	274,958
2017	144,305
2016	49,160
Prior	59,505
Financing Receivable, Converted	15,399
Revolving Loans	610,050
Total	3,086,494
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,402,276
2019	454,729
2018	262,258
2017	132,832
2016	25,057
Prior	58,315
Financing Receivable, Converted	14,118
Revolving Loans	527,170
Total	2,876,755
Commercial and industrial | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	44,922
2019	15,369
2018	9,585
2017	7,509
2016	19,613
Prior	110
Financing Receivable, Converted	0
Revolving Loans	60,448
Total	157,556
Commercial and industrial | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	6,602
2019	9,219
2018	3,115
2017	3,964
2016	4,490
Prior	1,080
Financing Receivable, Converted	1,281
Revolving Loans	22,432
Total	52,183
Commercial Real Estate-Investor Owned Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	514,175
2019	363,843
2018	204,677
2017	137,548
2016	149,180
Prior	181,429
Financing Receivable, Converted	6,509
Revolving Loans	32,058
Total	1,589,419
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	481,867
2019	338,843
2018	189,305
2017	131,718
2016	138,288
Prior	161,439
Financing Receivable, Converted	6,509
Revolving Loans	32,058
Total	1,480,027
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	32,308
2019	19,722
2018	6,656
2017	0
2016	9,647
Prior	17,370
Financing Receivable, Converted	0
Revolving Loans	0
Total	85,703
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	5,278
2018	8,716
2017	5,830
2016	1,245
Prior	2,620
Financing Receivable, Converted	0
Revolving Loans	0
Total	23,689
Commercial Real Estate-Owner Occupied Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	435,219
2019	299,685
2018	224,116
2017	191,720
2016	110,117
Prior	186,776
Financing Receivable, Converted	4,448
Revolving Loans	46,327
Total	1,498,408
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	419,142
2019	287,001
2018	215,181
2017	179,382
2016	104,470
Prior	167,456
Financing Receivable, Converted	2,672
Revolving Loans	45,323
Total	1,420,627
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	13,657
2019	5,257
2018	3,113
2017	6,198
2016	4,338
Prior	8,460
Financing Receivable, Converted	1,776
Revolving Loans	941
Total	43,740
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,420
2019	7,427
2018	5,822
2017	6,140
2016	1,309
Prior	10,860
Financing Receivable, Converted	0
Revolving Loans	63
Total	34,041
Construction Real Estate Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	225,669
2019	158,570
2018	80,142
2017	30,212
2016	11,539
Prior	11,674
Financing Receivable, Converted	0
Revolving Loans	28,880
Total	546,686
Construction Real Estate Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	223,069
2019	156,360
2018	45,460
2017	18,579
2016	11,539
Prior	9,144
Financing Receivable, Converted	0
Revolving Loans	28,880
Total	493,031
Construction Real Estate Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,544
2019	86
2018	34,179
2017	11,632
2016	0
Prior	2,499
Financing Receivable, Converted	0
Revolving Loans	0
Total	50,940
Construction Real Estate Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	56
2019	2,124
2018	503
2017	1
2016	0
Prior	31
Financing Receivable, Converted	0
Revolving Loans	0
Total	2,715
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
2020	57,840
2019	29,480
2018	18,365
2017	17,152
2016	28,855
Prior	97,441
Financing Receivable, Converted	1,459
Revolving Loans	67,666
Total	318,258
Residential | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	57,059
2019	27,907
2018	17,718
2017	17,138
2016	27,443
Prior	92,657
Financing Receivable, Converted	1,172
Revolving Loans	66,902
Total	307,996
Residential | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	210
2019	840
2018	526
2017	0
2016	514
Prior	1,603
Financing Receivable, Converted	287
Revolving Loans	511
Total	4,491
Residential | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	571
2019	733
2018	121
2017	14
2016	898
Prior	3,181
Financing Receivable, Converted	0
Revolving Loans	253
Total	5,771
Other
Financing Receivable, Credit Quality Indicator [Line Items]
2020	43,526
2019	28,214
2018	30,101
2017	9,659
2016	5,641
Prior	19,681
Financing Receivable, Converted	8
Revolving Loans	40,784
Total	177,614
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	43,526
2019	28,195
2018	30,074
2017	9,646
2016	5,641
Prior	17,027
Financing Receivable, Converted	0
Revolving Loans	40,779
Total	174,888
Other | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	1
2018	8
2017	0
2016	0
Prior	2,637
Financing Receivable, Converted	0
Revolving Loans	1
Total	2,647
Other | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	18
2018	19
2017	13
2016	0
Prior	17
Financing Receivable, Converted	8
Revolving Loans	4
Total	$ 79

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Portfolio Loans - Credit Quality Based on Aging Status (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	$ 8,056
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	2,502
Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	921
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	4,633
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	8,035
Performing | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	2,502
Performing | Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	921
Performing | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	4,612
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	21
Non Performing | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	0
Non Performing | Residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	0
Non Performing | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, after Allowance for Credit Loss	$ 21

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Portfolio Loans - Summary of Recorded Investment by Risk Category of Portfolio Loans by Portfolio Class and Category (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Total		$ 5,314,337
Loans, including unearned loan fees	$ 7,224,935	5,314,337
Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	7,241,074	5,316,953
Loans, including unearned loan fees		5,224,048
Non-Covered Loans | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,100,299	2,345,823
Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,589,419	1,262,981
Non-Covered Loans | CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,498,408	678,522
Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total	546,686	449,380
Non-Covered Loans | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	319,179	355,192
Non-Covered Loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 187,083	134,941
Loans, including unearned loan fees		132,150
Pass (1-6) | Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		4,954,405
Pass (1-6) | Non-Covered Loans | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total		2,151,084
Pass (1-6) | Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Total		1,242,569
Pass (1-6) | Non-Covered Loans | CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total		643,276
Pass (1-6) | Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total		437,134
Pass (1-6) | Non-Covered Loans | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total		348,246
Pass (1-6) | Non-Covered Loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		132,096
Watch (7) | Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		187,656
Watch (7) | Non-Covered Loans | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total		124,718
Watch (7) | Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Total		17,572
Watch (7) | Non-Covered Loans | CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total		28,773
Watch (7) | Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total		12,140
Watch (7) | Non-Covered Loans | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total		4,450
Watch (7) | Non-Covered Loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		3
Classified (8 & 9) | Non-Covered Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		81,987
Classified (8 & 9) | Non-Covered Loans | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total		70,021
Classified (8 & 9) | Non-Covered Loans | Commercial - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Total		2,840
Classified (8 & 9) | Non-Covered Loans | CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total		6,473
Classified (8 & 9) | Non-Covered Loans | Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total		106
Classified (8 & 9) | Non-Covered Loans | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total		2,496
Classified (8 & 9) | Non-Covered Loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, including unearned loan fees		$ 51

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Acquired PCD Loans $ in Thousands	Nov. 12, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
par value, acquired loans	$ 137,693
allowance pcd loans	(3,524)
noncredit premium	928
purchase price, acquired loans	$ 135,097

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Purchased Credit Impaired ("PCI") Loans - Summary of Aging of Recorded Investment in Past Due PCI Loans by Portfolio Class and Category (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Financing Receivable, Past Due [Line Items]
Total	$ 5,314,337

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Purchased Credit Impaired ("PCI") Loans - Narrative (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses on loans	$ 43,288

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Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative, Net Liability Position, Aggregate Fair Value	$ 35,800		$ 35,800
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, before tax			(7,898)	$ (3,004)	$ 0
Derivative Liability, Notional Amount	0		0
Summary of Derivative Instruments [Abstract]
Securities Sold under Agreements to Repurchase, Gross	271,081		271,081	230,886
Securities Sold under Agreements to Repurchase, Asset	0		0	0
Securities sold under agreement to repurchase	271,081		271,081	230,886
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities	0		0	0
Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Cash	271,081		271,081	230,886
Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral	0		0	0
Collateral Already Posted, Aggregate Fair Value	36,500		36,500
swap termination fee	3,200
repayment of fhlb advances	200,000		200,000
interest rate swaps terminated	200,000		200,000
Interest rate swap contracts
Derivative [Line Items]
Pledged cash as collateral in connection with interest rate swap agreements	34,903		34,903	14,573
Summary of Derivative Instruments [Abstract]
Derivative Asset, Fair Value, Gross Asset	28,703		28,703	11,055
Liability derivatives (other liabilities), fair value	34,967		34,967	14,747
Derivative Asset, Fair Value, Gross Liability	0		0	0
Derivative financial instruments	28,703		28,703	11,055
Derivative, Collateral, Obligation to Return Securities	2		2	56
Derivative, Collateral, Obligation to Return Cash	0		0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	28,701		28,701	10,999
Derivative Liability, Fair Value, Gross Asset	0		0	0
Derivative financial instruments	34,967		34,967	14,747
Derivative, Collateral, Right to Reclaim Securities	2		2	56
Derivative Liability, Fair Value, Amount Offset Against Collateral	62		62	118
Designated as Hedging Instrument [Member] | Other Assets | Interest Rate Contract [Member]
Derivative [Line Items]
Notional	61,962		61,962	61,962
Summary of Derivative Instruments [Abstract]
Derivative Asset, Fair Value, Gross Asset	0		0	0
Designated as Hedging Instrument [Member] | Other Liabilities | Interest Rate Contract [Member]
Summary of Derivative Instruments [Abstract]
Liability derivatives (other liabilities), fair value	5,987		5,987	2,872
Non-designated hedging instruments | Other Assets | Interest Rate Contract [Member]
Derivative [Line Items]
Notional	1,026,016		1,026,016	749,819
Summary of Derivative Instruments [Abstract]
Derivative Asset, Fair Value, Gross Asset	28,703		28,703	11,055
Non-designated hedging instruments | Other Liabilities | Interest Rate Contract [Member]
Summary of Derivative Instruments [Abstract]
Liability derivatives (other liabilities), fair value	28,980		28,980	$ 11,875
Cash Flow Hedging | Subordinated debentures and notes
Derivative [Line Items]
Notional	$ 62,000		$ 62,000
Derivative, Variable Interest Rate	2.62%		2.62%
Cash Flow Hedging | Forecast [Member]
Summary of Derivative Instruments [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		$ 1,500

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Derivative Financial Instruments - Cash Flow Hedges (Details) - Cash Flow Hedging $ in Thousands	Dec. 31, 2020 USD ($)
Cash Flow Hedge Due March 15, 2024
Derivative [Line Items]
Notional	$ 15,465
Fixed Rate	2.60%
Cash Flow Hedge Due March 30, 2024
Derivative [Line Items]
Notional	$ 14,433
Fixed Rate	2.60%
Cash Flow Hedge Due March 15, 2026
Derivative [Line Items]
Notional	$ 18,558
Fixed Rate	2.64%
Cash Flow Hedge Due March 17, 2026
Derivative [Line Items]
Notional	$ 13,506
Fixed Rate	2.64%

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Fixed Assets - Summary of Fixed Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Land	$ 13,389	$ 14,079
Buildings and leasehold improvements	53,007	54,838
Furniture, fixtures and equipment	16,560	15,178
Capitalized software	1,373	1,373
Fixed assets, gross	84,329	85,468
Less accumulated depreciation and amortization	31,160	25,455
Fixed assets, net	$ 53,169	$ 60,013

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Fixed Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation and amortization	$ 6.2	$ 5.7	$ 3.5

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Goodwill and Intangible Assets - Expected Amortization Schedule for the Core Deposit Intangible (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2021	$ 5,295
2022	4,517
2023	3,840
2024	3,162
2025	2,485
After 2025	3,785
Core deposit intangible, net, end of year	$ 23,084

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Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Maturities of Time Deposits [Abstract]
Related Party Deposit Liabilities	$ 7,243	$ 9,763
Related Party Deposits	2,441
Related Party Withdrawals	(4,961)
Brokered
Less than 1 year	0
Greater than 1 year and less than 2 years	0
Greater than 2 years and less than 3 years	25,069
Greater than 3 years and less than 4 years	25,140
Greater than 4 years and less than 5 years	0
Greater than 5 years	0
Brokered	50,209	215,758
Customer
Less than 1 year	384,529
Greater than 1 year and less than 2 years	75,484
Greater than 2 years and less than 3 years	12,663
Greater than 3 years and less than 4 years	17,587
Greater than 4 years and less than 5 years	4,043
Greater than 5 years	5,580
Other	499,886	610,689
Total
Less than 1 year	384,529
Greater than 1 year and less than 2 years	75,484
Greater than 2 years and less than 3 years	37,732
Greater than 3 years and less than 4 years	42,727
Greater than 4 years and less than 5 years	4,043
Greater than 5 years	5,580
Total Time Deposits	550,095
Time Deposits, $250,000 or More	169,500
CDARS Deposits	7,300
ICS Deposits	71,700
Deposit Liabilities Reclassified as Loans Receivable	$ 1,000	$ 2,100

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Subordinated Debentures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 shares	Nov. 01, 2016 USD ($)
Subordinated Borrowing [Line Items]
Number of Unconsolidated Statutory Business Trusts	13
Investments trust preferred securities	$ 2,900
Subordinated debentures and notes	$ 203,637	$ 141,258
Conversion of subordinated debt into common stock (in shares) | shares	0	0	0
5.75%
Subordinated Borrowing [Line Items]
Fixed interest rate	5.75%
Senior Subordinated Notes [Member]
Subordinated Borrowing [Line Items]
Senior Subordinated Notes				$ 50,000
Subordinated Notes, Redemption Price	100.00%
Trust preferred securities [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 92,290	$ 92,132
Trust preferred securities [Member] | EFSC Clayco Statutory Trust I
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 3,196	3,196
Maturity Date	Dec. 17, 2033
Initial Call Date (1)	Dec. 17, 2008
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0285
Trust preferred securities [Member] | EFSC Capital Trust II
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 5,155	5,155
Maturity Date	Jun. 17, 2034
Initial Call Date (1)	Jun. 17, 2009
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0265
Trust preferred securities [Member] | EFSC Statutory Trust III
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 11,341	11,341
Maturity Date	Dec. 15, 2034
Initial Call Date (1)	Dec. 15, 2009
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0197
Trust preferred securities [Member] | EFSC Clayco Statutory Trust II
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 4,124	4,124
Maturity Date	Sep. 15, 2035
Initial Call Date (1)	Sep. 15, 2010
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0183
Trust preferred securities [Member] | EFSC Statutory Trust IV
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 10,310	10,310
Maturity Date	Dec. 15, 2035
Initial Call Date (1)	Dec. 15, 2010
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0144
Trust preferred securities [Member] | EFSC Statutory Trust V
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 4,124	4,124
Maturity Date	Sep. 15, 2036
Initial Call Date (1)	Sep. 15, 2011
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0160
Trust preferred securities [Member] | EFSC Capital Trust VI
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 14,433	14,433
Maturity Date	Mar. 30, 2037
Initial Call Date (1)	Mar. 30, 2012
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0160
Trust preferred securities [Member] | EFSC Capital Trust VII
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 4,124	4,124
Maturity Date	Dec. 15, 2037
Initial Call Date (1)	Dec. 15, 2012
Description of variable rate	3 Month LIBOR
Floating interest rate	0.0225
Trust preferred securities [Member] | JEFFCO Stat Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 7,752	7,886
Maturity Date	Feb. 22, 2031
Initial Call Date (1)	Feb. 22, 2011
Fixed interest rate	10.20%
Trust preferred securities [Member] | EFSC Capital Trust VIII
Subordinated Borrowing [Line Items]
Fixed interest rate	9.00%
Trust preferred securities [Member] | JEFFCO Stat Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 4,443	4,388
Maturity Date	Mar. 17, 2034
Initial Call Date (1)	Mar. 17, 2009
Description of variable rate	3 Month LIBOR
Fixed interest rate	2.75%
Trust preferred securities [Member] | Trinity Capital Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 5,272	5,206
Maturity Date	Sep. 08, 2034
Initial Call Date (1)	Sep. 08, 2009
Description of variable rate	3 Month LIBOR
Fixed interest rate	2.70%
Trust preferred securities [Member] | Trinity Capital Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 10,310	10,302
Maturity Date	Nov. 23, 2035
Initial Call Date (1)	Aug. 23, 2010
Fixed interest rate	6.88%
Trust preferred securities [Member] | Trinity Capital Trust V [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 7,706	7,543
Maturity Date	Dec. 15, 2036
Initial Call Date (1)	Sep. 15, 2011
Description of variable rate	3 Month LIBOR
Fixed interest rate	1.65%
Senior Subordinated Notes [Member]
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 50,000	50,000
Debt issuance costs	(1,903)	(874)
Subordinated notes, net of issuance costs	$ 111,347	49,126
Maturity Date	Nov. 01, 2026
Initial Call Date (1)	Nov. 01, 2021
Floating interest rate	0.03387
Fixed interest rate	4.75%
Senior Subordinated Notes [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Subordinated Borrowing [Line Items]
Floating interest rate	0.0566
Senior Subordinated Notes [Member] | 5.75%
Subordinated Borrowing [Line Items]
Subordinated debentures and notes	$ 63,250	$ 0
Maturity Date	Jun. 01, 2030
Initial Call Date (1)	Jun. 01, 2025

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Federal Home Loan Bank Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020
Federal Home Loan Bank, Advances, Branch of FHLB [Line Items]
Convertible Debt	$ 50,000
Convertible advances weighted average interest rate	1.56%
Carrying value of the loans pledged	$ 222,406	$ 50,000
Short term advances outstanding	$ 170,000	$ 0
Weighted average interest rate on short term advances	1.73%	0.00%
Collateral used to secure confirming letters of credit		$ 6,000
Weighted Rate
Federal Home Loan Bank, Advances, Maturities Summary, One to Five Years	$ 52,406	$ 50,000
Federal Home Loan Bank Advances, Maturities Summary, Average Interest Rate of Amounts Due in One to Five Years of Balance Sheet Date	1.62%	1.56%
Federal Home Loan Bank, Advances, Maturities Summary, Average Interst Rate of Amounts	1.70%	1.56%
Des Moines
Federal Home Loan Bank, Advances, Branch of FHLB [Line Items]
Carrying value of the loans pledged	$ 1,600,000	$ 1,400,000
Availability under the secured line of credit		$ 739,100

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Other Borrowings and Notes Payable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Feb. 23, 2016
Debt Instrument [Line Items]
Loans Payable	$ 30,000,000	$ 34,286,000
Line of Credit, Current			$ 25,000,000
Securities sold under agreement to repurchase	271,081,000	230,886,000
Total	271,081,000	230,886,000
Amount withdrawn		0
Unsecured term loan, face amount	40,000,000.0
paycheck protection program liquidity facility funds	86,100,000
Other Borrowings
Debt Instrument [Line Items]
Maximum balance outstanding at any month-end	271,081,000	230,886,000
Average balance during the year	$ 206,338,000	$ 169,179,000
Average interest rate during the year	0.23%	0.69%
Average interest rate at December 31	0.07%	0.91%
Line of Credit
Debt Instrument [Line Items]
Maximum balance outstanding at any month-end		$ 2,000,000
Average balance during the year		$ 323,000
Average interest rate during the year		4.61%
Average interest rate at December 31		0.00%
Remaining borrowing capacity	$ 900,000,000
Aggregate of pledge secured by certain eligible loans	1,100,000,000
Amount withdrawn	0
Unsecured Term Loan
Debt Instrument [Line Items]
Maximum balance outstanding at any month-end	34,286,000	$ 40,000,000
Average balance during the year	$ 32,123,000	$ 30,810,000
Average interest rate during the year	1.96%	3.55%
Average interest rate at December 31	1.44%	3.00%

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Regulatory Matters (Details)	Dec. 31, 2020	Dec. 31, 2019
Enterprise Financial Services Corp [Member]
Total Capital (to Risk Weighted Assets) [Abstract]
Actual, Ratio	14.90%	12.90%
Tier 1 Capital (to Risk Weighted Assets) [Abstract]
Actual, Ratio	12.10%	11.40%
Tier One Common Equity Capital to Risk Weighted Assets	10.90%	9.90%
Tier 1 Capital (to Average Assets) [Abstract]
Actual, Ratio	10.00%	10.10%
Enterprise Bank and Trust [Member]
Total Capital (to Risk Weighted Assets) [Abstract]
Actual, Ratio	13.70%	12.40%
To Be Well Capitalized Under Applicable Action Provisions, Ratio	10.00%
Capital to Risk Weighted Assets CCB Minimum	10.50%
Tier 1 Capital (to Risk Weighted Assets) [Abstract]
Actual, Ratio	12.50%	11.70%
To Be Well Capitalized Under Applicable Action Provisions, Ratio	8.00%
Tier One Risk Based Capital CCB Minimum	8.50%
Tier One Common Equity Capital to Risk Weighted Assets	12.50%	11.70%
Tier One Common Equity Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%
Tier One Common Equity Capital CCB Minimum	7.00%
Tier 1 Capital (to Average Assets) [Abstract]
Actual, Ratio	10.30%	10.30%
To Be Well Capitalized Under Applicable Action Provisions, Ratio	5.00%
Tier One Leverage Capital to Average Assets CCB Minimum	4.00%

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Compensation Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 01, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased				95,907			2,000,000
Share-based compensation expense				$ 4,178	$ 4,032	$ 3,452
Tax benefit from compensation expense				$ 200	500	1,600
Award vesting period				3 years
Total unrecognized compensation cost for nonvested stock units				$ 5,000
Number of shares issued upon completion of performance cycle		62,649	99,308
Employee minimum age to participate in plan				21 years
Company contributions, amount charged to expense				$ 3,800	$ 3,200	2,800
Preferred stock, shares authorized				5,000,000	5,000,000
Preferred stock, par value				$ 0.01	$ 0.01
Preferred stock, shares outstanding				0	0
Expected years to recognize unearned compensation				2 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term				10 years
Stock Appreciation Rights (SSARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				5 years
Contractual term				10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense				$ 2,613	$ 1,969	1,211
Total unrecognized compensation cost for nonvested stock units				$ 3,899	$ 3,417	$ 2,175
Number of shares issued				88,759
Expected years to recognize unearned compensation				1 year 10 months 24 days	1 year 10 months 24 days	2 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense				$ 1,097	$ 1,699	$ 2,067
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent				85.00%
Share-based compensation expense				$ 468	$ 364	$ 174
Number of shares authorized				750,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period				58,195	41,116	14,799
Minimum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				3 years
Minimum | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				2 years
Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				5 years
Maximum | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				5 years
Stock Plan for Non-Management Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				86,616	96,031
Number of shares authorized				200,000
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant, Excluding Deferred Shares				80,130
Share Based Compensation Arrangement by Shar Based Payment Award Number of Shares Available for Grant, Deferred Shares				6,486
Deferred Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate				25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate, Bonus				100.00%
Deferred Compensation Plan Assets				$ 3,600
Deferred Compensation Liability, Current and Noncurrent				$ 4,900
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued upon completion of performance cycle	23,251

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Compensation Plans - Common Stock (Details) - shares	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	1,344,801	1,530,530
2018 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	339,691	521,573
Stock Plan for Non-Management Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	86,616	96,031
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	635,890	694,085
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	125,176	73,172
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	157,428	117,369
Stock Options and SSARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement By Share-based Payment Award, Outstanding, Number	0	28,300

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Compensation Plans - Changes in OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 867,185	$ 603,804	$ 548,573
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	19,371	27,031	(4,630)
Reclassification for the adoption of ASU 2016-09			(834)
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss)	0	0
Balance	1,078,975	867,185	603,804
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	17,749	(9,282)	(3,818)
Balance	37,120	17,749	(9,282)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	14,977	(9,047)	(3,622)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	23,627	29,226	(4,633)
Reclassification for the adoption of ASU 2016-09			(792)
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss)	(16,284)	(5,202)
Balance	22,320	14,977	(9,047)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(2,162)	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(2,346)	(2,162)	0
Reclassification for the adoption of ASU 2016-09			0
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss)	0	0
Balance	(4,508)	(2,162)	0
AOCI, Accumulated Gain (Loss), Held To Maturity Securities, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	4,934	(235)	(196)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,910)	(33)	3
Reclassification for the adoption of ASU 2016-09			(42)
Debt Securities, Held-to-maturity, Transfer, Derivative Hedge, Gain (Loss)	16,284	5,202
Balance	$ 19,308	$ 4,934	$ (235)

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Compensation Plans - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement [Abstract]
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, before tax	$ 31,798	$ 38,764	$ (6,143)
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, tax	7,854	9,575	(1,517)
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, net of tax	23,944	29,189	(4,626)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, before tax	(421)	49	(9)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, tax	(104)	12	(2)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, net of tax	(317)	37	(7)
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, before of tax	(2,537)	(44)	4
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, tax	(627)	(11)	1
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, net of tax	(1,910)	(33)	3
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, before tax	(7,898)	(3,004)	0
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, tax	(1,951)	(742)	0
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, net of tax	(5,947)	(2,262)	0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, before tax	4,782	133	0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, tax	1,181	33	0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, net of tax	3,601	100	0
Other comprehensive income (loss) before tax	25,724	35,898	(6,148)
Other comprehensive income (loss) tax	6,353	8,867	(1,518)
Other comprehensive income (loss), net	$ 19,371	$ 27,031	$ (4,630)

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Compensation Plans - Reclassifications Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Noninterest income	$ 18,506	$ 12,629	$ 9,960	$ 13,408	$ 14,418	$ 13,564	$ 11,964	$ 9,230	$ 54,503	$ 49,176	$ 38,347
Net interest income	77,446	63,354	65,833	63,368	61,613	63,046	61,715	52,343	270,001	238,717	191,905
Income before income tax expense	35,439	22,379	18,290	15,839	36,336	36,538	22,903	20,259	91,947	116,036	104,577
Income tax expense	6,508	4,428	3,656	2,971	7,246	7,469	4,479	4,103	17,563	23,297	15,360
Net income	$ 28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	$ 74,384	$ 92,739	$ 89,217

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Compensation Plans - Schedule of Various Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 4,178	$ 4,032	$ 3,452
Total unrecognized compensation cost for nonvested stock units	$ 5,000
Expected years to recognize unearned compensation	2 years
Weighted average fair value (usd per share)	$ 38,090.00	$ 47,460
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 468	$ 364	174
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	2,613	1,969	1,211
Total fair value at vesting date	1,702	1,067	1,544
Total unrecognized compensation cost for nonvested stock units	$ 3,899	$ 3,417	$ 2,175
Expected years to recognize unearned compensation	1 year 10 months 24 days	1 year 10 months 24 days	2 years
Stock Options and SSARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of option/SSAR exercises on date of exercise	$ 597	$ 407	$ 2,469
Stock Plan for Non-Management Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued	15,901,000	11,382,000	11,750,000
Weighted average fair value (usd per share)	$ 30.28	$ 41.63	$ 50.74

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Compensation Plans - Schedule of Employee Stock Options and SSARs Activity (Details) - Stock Options and SSARs	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Shares
Outstanding at beginning of period (in shares)	28,300
Exercised (in shares)	(28,300)
Outstanding at end of period (in shares)	0
Weighted Average Exercise Price
Outstanding at beginning of period (usd per share) | $ / shares	$ 10.14
Exercised (usd per share) | $ / shares	$ 10.14

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Compensation Plans - Summary of Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Weighted Average Grant Date Fair Value
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 5,000
Expected years to recognize unearned compensation	2 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 1,702	$ 1,067	$ 1,544
Shares
Outstanding, beginning of period (in shares)	117,369
Granted (in shares)	88,759
Vested (in shares)	44,351
Forfeited (in shares)	4,349
Outstanding, end of period (in shares)	157,428	117,369
Weighted Average Grant Date Fair Value
Outstanding, beginning of period (usd per share)	$ 45.86
Granted (usd per share)	39.63
Vested (usd per share)	45.68
Forfeited (usd per share)	44.24
Outstanding, end of period (usd per share)	$ 42.44	$ 45.86
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 3,899	$ 3,417	$ 2,175
Expected years to recognize unearned compensation	1 year 10 months 24 days	1 year 10 months 24 days	2 years

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Compensation Plans Outstanding Longer Term Incentive Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Outstanding Long Term Incentive Awards [Line Items]
Target Shares Issuable as Long Term Incentive Awards	$ 26,002	$ 20,860
Maximum Shares Issuable as Long Term Incentive Awards	52,004	41,720
Unrecognized Compensation Cost - Long Term Incentives	$ 704,000	$ 366,000
Share-based Compensation Arrangement By Share-based Payment Award, Grants In Period, Weighted Average Grant Date Fair Value	$ 38,090.00	$ 47,460

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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Examination [Line Items]
Federal									$ 25,132	$ 15,470	$ 9,621
State and local									5,009	2,027	2,432
Current Federal, State and Local, Tax Expense (Benefit)									30,141	17,497	12,053
Deferred:									(12,578)	5,800	3,307
Deferred Federal Income Tax Expense (Benefit)									(10,651)	4,262	2,812
Deferred State and Local Income Tax Expense (Benefit)									(1,927)	1,538	495
Deferred Federal, State and Local, Tax Expense (Benefit)									(12,578)	5,800	3,307
Total income tax expense	$ 6,508	$ 4,428	$ 3,656	$ 2,971	$ 7,246	$ 7,469	$ 4,479	$ 4,103	$ 17,563	$ 23,297	$ 15,360

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Income Taxes - Schedule of Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Increase (reduction) in income tax resulting from:
Income tax expense at statutory rate									$ 19,309	$ 24,368	$ 21,961
Tax-exempt interest income, net									(2,010)	(962)	(506)
State and local income taxes, net									3,254	2,816	2,423
Bank-owned life insurance, net									(778)	(628)	(452)
Non-deductible expenses									637	749	294
Tax benefit (expense) of LIHTC investments, net									(444)	(278)	(50)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount									(175)	(526)	(1,631)
Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount									(1,327)	(913)	(4,627)
Non-taxable subsidiary dividend									0	0	(2,728)
Non-taxable donation to charitable foundation									0	(420)	0
Other, net									(903)	(909)	676
Total income tax expense	$ 6,508	$ 4,428	$ 3,656	$ 2,971	$ 7,246	$ 7,469	$ 4,479	$ 4,103	$ 17,563	$ 23,297	$ 15,360

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Income Taxes - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Allowance for loan losses	$ 34,031	$ 10,692
Acquired loans	0	9,722
Deferred Tax Assets, Loans Held for Sale	8,058	0
Other real estate	896	657
Deferred compensation	2,585	2,462
Accrued compensation	5,391	1,607
Deferred Tax Assets, Operating Loss Carryforwards	6,460	7,066
Other deferred tax assets	3,086	791
Total deferred tax assets	60,507	32,997
Deferred Tax Liabilities, Asset Purchase Tax Basis Difference, Net	3,413	0
Deferred Tax Liabilities, Other	4,369	2,407
Deferred tax liabilities:
Unrealized gains on securities	12,189	5,847
Deferred Tax Liabilities, Goodwill and Intangible Assets	7,800	7,432
Total deferred tax liabilities	27,771	15,686
Deferred Tax Assets, Gross	32,736	17,311
Deferred Tax Assets, Net	29,804	14,379
Deferred Tax Assets, Valuation Allowance	2,932	2,932
Other Assets
Deferred tax liabilities:
Deferred Tax Assets, Net	$ 29,800	$ 14,400

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Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 1,497	$ 1,301	$ 1,244
Additions based on tax positions related to the current year	395	401	367
Additions for tax positions of prior years	1,556	62	50
Settlements or lapse of statute of limitations	(291)	(267)	(360)
Balance at end of year	$ 3,157	$ 1,497	$ 1,301

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Income Taxes - Narrative (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) state	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Income Tax Examination [Line Items]
Amount recognized as a component of income tax expense related low-income housing tax credit	$ 400,000	$ 300,000	$ 100,000
Investments related to low-income housing tax credits	4,200,000	4,000,000.0
Impairment losses recognized from forfeiture or ineligibility	0
State valuation allowance	2,932,000	2,932,000
Deferred Tax Assets, Net	$ 29,804,000	14,379,000
Number of states the company files income tax returns in | state	29
Unrecognized tax benefits	$ 3,157,000	1,497,000	1,301,000	$ 1,244,000
Unrecognized tax benefits that would impact effective tax rate	3,100,000	1,100,000	$ 900,000
Reduction in unrecognized tax benefit that is reasonably possible due to a lapse of statute of limitations	$ 300,000
Duration of unrecognized tax benefits	12 months
Income Tax Examination, Penalties and Interest Accrued	$ 900,000
Other Assets
Income Tax Examination [Line Items]
Deferred Tax Assets, Net	$ 29,800,000	$ 14,400,000

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Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Commitments to extend credit
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	$ 1,946,068	$ 1,469,413
Letters of credit
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	$ 50,971	47,969
Letters of credit | Minimum
Schedule of Commitments [Line Items]
Remaining term	1 month
Letters of credit | Maximum
Schedule of Commitments [Line Items]
Remaining term	4 years
State tax credits, held for sale
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	$ 24,473	28,035
Low Income Housing Tax Credits [Domain]
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	0	704
SBIC Capital Commitments [Domain]
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	23,400	20,829
Unadvanced Commitment on Impaired Loan
Schedule of Commitments [Line Items]
Estimated losses attributable to unadvanced commitments on impaired loans	5,700
Fixed Rate Loan Commitment | Commitments to extend credit
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	$ 160,600	$ 144,800

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Fair Value Measurements - Summary of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Securities available-for-sale	$ 912,429	$ 1,135,317
Total Fair Value
Assets
State tax credits held for sale	39,925	39,046
Obligations of U.S. Government-sponsored enterprises
Assets
Securities available-for-sale	15,161	10,046
Obligations of states and political subdivisions
Assets
Securities available-for-sale	344,232	213,024
Residential mortgage-backed securities
Assets
Securities available-for-sale	526,572	902,021
US Treasury Bill Securities [Member]
Assets
Securities available-for-sale	11,466	10,226
Corporate Debt Securities [Member]
Assets
Securities available-for-sale	14,998
Recurring basis | Total Fair Value
Assets
Securities available-for-sale	912,429	1,135,317
Other Investments		0
Derivative financial instruments	28,703	11,055
Assets, Fair Value Disclosure	941,132	1,146,372
Liabilities
Derivative financial instruments	34,967	14,747
Total liabilities	34,967	14,747
Recurring basis |     Obligations of U.S. Government-sponsored enterprises | Total Fair Value
Assets
Securities available-for-sale	15,161	10,046
Recurring basis | Obligations of states and political subdivisions | Total Fair Value
Assets
Securities available-for-sale	344,232	213,024
Recurring basis | Residential mortgage-backed securities | Total Fair Value
Assets
Securities available-for-sale	526,572	902,021
Recurring basis | US Treasury Bill Securities [Member] | Total Fair Value
Assets
Securities available-for-sale	11,466	10,226
Recurring basis | Corporate Debt Securities [Member] | Total Fair Value
Assets
Securities available-for-sale	14,998
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Securities available-for-sale	0	0
Other Investments		0
Derivative financial instruments	0	0
Assets, Fair Value Disclosure	0	0
Liabilities
Derivative financial instruments	0	0
Total liabilities	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) |     Obligations of U.S. Government-sponsored enterprises
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of states and political subdivisions
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential mortgage-backed securities
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | US Treasury Bill Securities [Member]
Assets
Securities available-for-sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Debt Securities [Member]
Assets
Securities available-for-sale	0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets
Securities available-for-sale	912,429	1,135,317
Other Investments		0
Derivative financial instruments	28,703	11,055
Assets, Fair Value Disclosure	941,132	1,146,372
Liabilities
Derivative financial instruments	34,967	14,747
Total liabilities	34,967	14,747
Recurring basis | Significant Other Observable Inputs (Level 2) |     Obligations of U.S. Government-sponsored enterprises
Assets
Securities available-for-sale	15,161	10,046
Recurring basis | Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
Assets
Securities available-for-sale	344,232	213,024
Recurring basis | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities
Assets
Securities available-for-sale	526,572	902,021
Recurring basis | Significant Other Observable Inputs (Level 2) | US Treasury Bill Securities [Member]
Assets
Securities available-for-sale	11,466	10,226
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate Debt Securities [Member]
Assets
Securities available-for-sale	14,998
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets
Securities available-for-sale	0	0
Other Investments		0
Derivative financial instruments	0	0
Assets, Fair Value Disclosure	0	0
Liabilities
Derivative financial instruments	0	0
Total liabilities	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) |     Obligations of U.S. Government-sponsored enterprises
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Obligations of states and political subdivisions
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities
Assets
Securities available-for-sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | US Treasury Bill Securities [Member]
Assets
Securities available-for-sale	0	$ 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate Debt Securities [Member]
Assets
Securities available-for-sale	$ 0

XML

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	$ 48,764	$ 38,044
Estimated fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
State Tax Credits Held For Sale, Fair Value Disclosure	$ 39,925	$ 39,046

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Fair Value Measurements - Schedule of Level 3 Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 912,429	$ 1,135,317
Debt Securities, Held-to-maturity, Fair Value	501,523	181,939
Level 3 | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other Investments		0
Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other Investments		0
Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other Investments		0
Fair Value	912,429	1,135,317
Total Fair Value | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Other Investments		0
Fair Value	912,429	1,135,317
Obligations of U.S. Government-sponsored enterprises
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	15,161	10,046
Obligations of U.S. Government-sponsored enterprises | Level 3 | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Obligations of U.S. Government-sponsored enterprises | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Obligations of U.S. Government-sponsored enterprises | Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	15,161	10,046
Obligations of U.S. Government-sponsored enterprises | Total Fair Value | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	15,161	10,046
Obligations of states and political subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	344,232	213,024
Debt Securities, Held-to-maturity, Fair Value	251,138	11,874
Obligations of states and political subdivisions | Level 3 | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Obligations of states and political subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Obligations of states and political subdivisions | Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	344,232	213,024
Obligations of states and political subdivisions | Total Fair Value | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	344,232	213,024
Residential mortgage-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	526,572	902,021
Debt Securities, Held-to-maturity, Fair Value	114,541	47,021
Residential mortgage-backed securities | Level 3 | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Residential mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
Residential mortgage-backed securities | Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	526,572	902,021
Residential mortgage-backed securities | Total Fair Value | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	526,572	902,021
US Treasury Bill Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	11,466	10,226
US Treasury Bill Securities [Member] | Level 3 | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
US Treasury Bill Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	0	0
US Treasury Bill Securities [Member] | Significant Other Observable Inputs (Level 2) | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	11,466	10,226
US Treasury Bill Securities [Member] | Total Fair Value | Recurring basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value	$ 11,466	$ 10,226

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Fair Value Measurements - Summary of Financial Instruments and Non-Financial Assets Measured at Fair Value on a Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total (losses) gains for the year	$ 5,486	$ 2,687
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total (losses) gains for the year	4,486	2,687
Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total (losses) gains for the year	1,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Significant Other Observable Inputs (Level 2) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Significant Other Observable Inputs (Level 2) | Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	4,847	7,450
Significant Unobservable Inputs (Level 3) | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,247	2,506
Significant Unobservable Inputs (Level 3) | Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	3,600
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	4,847	7,450
Total Fair Value | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,247	$ 2,506
Total Fair Value | Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	$ 3,600

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Fair Value Measurements - Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Balance sheet assets
Securities available-for-sale	$ 912,429	$ 1,135,317
Securities held-to-maturity	488,059	181,166
Carrying Amount
Balance sheet assets
Securities held-to-maturity	487,610	181,166
Other investments	48,764	38,044
Loans held-for-sale	13,564	5,570
Loans, net	7,088,264	5,271,049
State tax credits held for sale	36,853	36,802
Balance sheet liabilities
Certificates of deposit	550,095	826,447
Subordinated debentures and notes	203,637	141,258
FHLB advances	50,000	222,406
Other borrowings	301,081	265,172
Estimated fair value
Balance sheet assets
Securities held-to-maturity	501,523	181,939
Other investments	48,764	38,044
Loans held-for-sale	13,564	5,570
Loans, net	7,067,562	5,205,651
State tax credits held for sale	39,925	39,046
Balance sheet liabilities
Certificates of deposit	553,946	825,203
Subordinated debentures and notes	192,889	130,985
FHLB advances	51,871	221,402
Other borrowings	$ 301,081	$ 265,172

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Parent Company Only Condensed Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Cash	$ 537,703	$ 167,256	$ 196,552	$ 153,323
Total assets	9,751,571	7,333,791
Subordinated debentures and notes	203,637	141,258
Notes payable	30,000	34,286
Shareholders' equity	1,078,975	867,185	603,804	548,573
Total liabilities and shareholders' equity	9,751,571	7,333,791
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	75,475	21,955	$ 6,369	$ 9,977
Other assets	35,108	37,905
Total assets	1,321,050	1,047,614
Subordinated debentures and notes	203,637	141,258
Notes payable	30,000	34,286
Accounts payable and other liabilities	8,439	4,885
Shareholders' equity	1,078,974	867,185
Total liabilities and shareholders' equity	1,321,050	1,047,614
Enterprise Bank and Trust [Member] | Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Investments	1,200,689	977,959
Nonbank Subsidiaries [Member] | Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Investments	$ 9,778	$ 9,795

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Parent Company Only Condensed Financial Statements - Condensed Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Income [Abstract]
Dividends from Bank									$ 895	$ 1,055	$ 906
Dividends from Other Subsidiaries									1,400	1,500	1,200
Expenses:
Interest expense-subordinated debentures and notes									9,885	7,507	5,798
Interest expense-notes payable	$ 6,667	$ 7,433	$ 7,358	$ 13,320	$ 15,625	$ 18,032	$ 17,486	$ 15,274	34,778	66,417	45,897
Income tax benefit	(6,508)	(4,428)	(3,656)	(2,971)	(7,246)	(7,469)	(4,479)	(4,103)	(17,563)	(23,297)	(15,360)
Net income	$ 28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	74,384	92,739	89,217
Total comprehensive income									93,755	119,770	84,587
Parent [Member]
Operating Income [Abstract]
Dividends from Bank									37,000	60,000	30,000
Other									483	663	1,784
Total income									38,883	62,163	32,984
Expenses:
Interest expense-subordinated debentures and notes									9,885	7,507	5,798
Interest expense-notes payable									705	1,182	62
Other expenses									6,946	6,936	7,087
Total expenses									17,536	15,625	12,947
Income before taxes and equity in undistributed earnings of subsidiaries									21,347	46,538	20,037
Income tax benefit									3,448	3,478	3,482
Net income									24,795	50,016	23,519
Equity in undistributed earnings of subsidiaries									49,589	42,723	65,698
Total comprehensive income									$ 74,384	$ 92,739	$ 89,217

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Parent Company Only Condensed Financial Statements - Consolidated Statements of Cash Flow (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	$ 4,178	$ 4,032	$ 3,452
Net cash provided by operating activities	135,514	92,457	108,808
Cash flows from investing activities:
Net cash paid for acquisitions and dispositions	62,114	(23,377)	0
Net cash used in investing activities	(702,829)	(378,520)	(331,618)
Cash flows from financing activities:
Proceeds from the issuance of subordinated notes	61,953	0	0
Proceeds from Notes Payable	0	41,000	2,000
Repayments of Notes Payable	4,286	8,714	0
Cash dividends paid	(19,795)	(16,568)	(10,845)
Payments for Repurchase of Common Stock	15,347	15,526	19,387
Net cash provided by financing activities	937,762	256,767	266,039
Net (decrease) increase in cash and cash equivalents	370,447	(29,296)	43,229
Cash and cash equivalents, beginning of period	167,256	196,552	153,323
Cash and cash equivalents, end of period	$ 537,703	$ 167,256	$ 196,552
Noncash transactions:
Stock Issued During Period, Shares, Acquisitions	167,035	171,885	0
Parent [Member]
Cash flows from operating activities:
Net income available to common shareholders	$ 74,384	$ 92,739	$ 89,217
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	4,178	4,032	3,452
Net income of subsidiaries	(87,989)	(104,223)	(94,898)
Dividends from subsidiaries	38,400	61,500	31,200
Other, net	3,588	(1,063)	(953)
Net cash provided by operating activities	32,561	52,985	28,018
Cash flows from investing activities:
Net cash paid for acquisitions and dispositions	(1,243)	(36,015)	0
Purchases of other investments	(1,166)	(2,634)	(2,729)
Proceeds from distributions on other investments	765	1,271	1,911
Net cash used in investing activities	(1,644)	(37,378)	(818)
Cash flows from financing activities:
Proceeds from the issuance of subordinated notes	61,953	0	0
Proceeds from Notes Payable	0	1,000	2,000
Repayments of Notes Payable	0	3,000	0
Cash dividends paid	(19,795)	(16,569)	(10,845)
Payments for Repurchase of Common Stock	15,347	15,526	19,387
Payments for the repurchase of equity instruments, net	78	(212)	(2,576)
Net cash provided by financing activities	22,603	(21)	(30,808)
Net (decrease) increase in cash and cash equivalents	53,520	15,586	(3,608)
Cash and cash equivalents, beginning of period	21,955	6,369	9,977
Cash and cash equivalents, end of period	$ 75,475	$ 21,955	$ 6,369
Noncash transactions:
Stock Issued During Period, Shares, Acquisitions	167,035	171,885	0
Proceeds from Issuance of Long-term Debt	$ 0	$ 40,000	$ 0
Repayments of Long-term Debt	$ (4,286)	$ (5,714)	$ 0

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Quarterly Condensed Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 84,113	$ 70,787	$ 73,191	$ 76,688	$ 77,238	$ 81,078	$ 79,201	$ 67,617	$ 304,779	$ 305,134	$ 237,802
Interest expense	6,667	7,433	7,358	13,320	15,625	18,032	17,486	15,274	34,778	66,417	45,897
Net interest income	77,446	63,354	65,833	63,368	61,613	63,046	61,715	52,343	270,001	238,717	191,905
Provision for credit losses	9,463	14,080	19,591	22,264	1,341	1,833	1,722	1,476	65,398	6,372	6,644
Net interest income after provision for loan losses	67,983	49,274	46,242	41,104	60,272	61,213	59,993	50,867	204,603	232,345	185,261
Noninterest income	18,506	12,629	9,960	13,408	14,418	13,564	11,964	9,230	54,503	49,176	38,347
Noninterest expense	51,050	39,524	37,912	38,673	38,354	38,239	49,054	39,838	167,159	165,485	119,031
Income before income tax expense	35,439	22,379	18,290	15,839	36,336	36,538	22,903	20,259	91,947	116,036	104,577
Income tax expense	6,508	4,428	3,656	2,971	7,246	7,469	4,479	4,103	17,563	23,297	15,360
Net income	$ 28,931	$ 17,951	$ 14,634	$ 12,868	$ 29,090	$ 29,069	$ 18,424	$ 16,156	$ 74,384	$ 92,739	$ 89,217
Earnings per common share:
Basic (usd per share)	$ 1.00	$ 0.68	$ 0.56	$ 0.49	$ 1.10	$ 1.09	$ 0.69	$ 0.68	$ 2.76	$ 3.56	$ 3.86
Diluted (usd per share)	$ 1.00	$ 0.68	$ 0.56	$ 0.48	$ 1.09	$ 1.08	$ 0.68	$ 0.67	$ 2.76	$ 3.55	$ 3.83

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Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 4,043
Operating Lease, Right-of-Use Asset	13,636	$ 14,843
Operating Lease, Cost	3,207	3,301
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	1,623	5,208	$ 0
Short-term Lease, Cost	201	288
Lease, Cost	3,408	3,589
Operating Lease, Liability	$ 14,152	$ 15,461
Operating Lease, Weighted Average Remaining Lease Term	5 years	6 years
Operating Lease, Weighted Average Discount Rate, Percent	2.50%	2.70%
Lessee, Operating Lease, Liability, Payments, Due Year Two	$ 2,988
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,622
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,190
Lessee, Operating Lease, Liability, Payments, Due Year Five	978
Lessee, Operating Lease, Liability, Payments, Due after Year Five	2,266
Lessee, Operating Lease, Liability, Payments, Due	15,087
Present Value Adjustment	935
Operating Lease, Lease Income, Lease Payments	1,800	$ 900
Operating Lease, Payments	$ 3,300
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Renewal Term	5 years