10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the Quarterly Period Ended March 31, 2021

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: 0-19065

SANDY SPRING BANCORP, INC.

(Exact name of registrant as specified in its charter)

Maryland	52-1532952
(State of incorporation)	(I.R.S. Employer Identification Number)

17801 Georgia Avenue, Olney, Maryland	20832
(Address of principal executive office)	(Zip Code)

301-774-6400

(Registrant’s telephone number, including area code)

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

Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common Stock, par value $1.00 per share	SASR	The NASDAQ Stock Market, LLC

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 filing requirements for the past 90 days.

Yes ☒ 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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Yes ☒ 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act)

Yes ☐ No ☒

The number of outstanding shares of common stock outstanding as of May 5, 2021

Common stock, $1.00 par value – 47,268,656 shares

SANDY SPRING BANCORP, INC.

TABLE OF CONTENTS

	Page
PART I - FINANCIAL INFORMATION
Item 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
Condensed Consolidated Statements of Condition - Unaudited as of March 31, 2021 and December 31, 2020	3
Condensed Consolidated Statements of Income - Unaudited for the Three Months Ended March 31, 2021 and 2020	4
Condensed Consolidated Statements of Comprehensive Income – Unaudited for the Three Months Ended March 31, 2021 and 2020	5
Condensed Consolidated Statements of Changes in Stockholders’ Equity – Unaudited for the Three Ended March 31, 2021 and 2020	6
Condensed Consolidated Statements of Cash Flows – Unaudited for the Three Months Ended March 31, 2021 and 2020	7
Notes to the Condensed Consolidated Financial Statements	8
Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	38
Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	63
Item 4. CONTROLS AND PROCEDURES	63
PART II - OTHER INFORMATION
Item 1. LEGAL PROCEEDINGS	64
Item 1A. RISK FACTORS	64
Item 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	64
Item 3. DEFAULTS UPON SENIOR SECURITIES	64
Item 4. MINE SAFETY DISCLOSURES	64
Item 5. OTHER INFORMATION	64
Item 6. EXHIBITS	64
SIGNATURES	65

2

Part I

Item 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CONDITION – UNAUDITED

	March 31,		December 31,
(Dollars in thousands)	2021		2020
Assets:
Cash and due from banks	$	100,739	$	93,651
Federal funds sold	285		291
Interest-bearing deposits with banks	127,597		203,061
Cash and cash equivalents	228,621		297,003
Residential mortgage loans held for sale (at fair value)	84,930		78,294
Investments available-for-sale (at fair value)	1,427,880		1,348,021
Equity securities	44,847		65,760
Total loans	10,446,866		10,400,509
Less: allowance for credit losses	(130,361)		(165,367)
Net loans	10,316,505		10,235,142
Premises and equipment, net	55,361		57,720
Other real estate owned	1,354		1,455
Accrued interest receivable	44,559		46,431
Goodwill	370,223		370,223
Other intangible assets, net	30,824		32,521
Other assets	268,262		265,859
Total assets	$	12,873,366	$	12,798,429
Liabilities:
Noninterest-bearing deposits	$	3,770,852	$	3,325,547
Interest-bearing deposits	6,906,900		6,707,522
Total deposits	10,677,752		10,033,069
Securities sold under retail repurchase agreements and federal funds purchased	189,318		543,157
Advances from FHLB	100,000		379,075
Subordinated debt	227,044		227,088
Total borrowings	516,362		1,149,320
Accrued interest payable and other liabilities	167,558		146,085
Total liabilities	11,361,672		11,328,474
Stockholders' equity:
Common stock -- par value $1.00 ; shares authorized 100,000,000; shares issued and outstanding
47,187,389 and 47,056,777 at March 31, 2021 and December 31, 2020, respectively	47,187		47,057
Additional paid in capital	849,606		846,922
Retained earnings	617,553		557,271
Accumulated other comprehensive income/ (loss)	(2,652)		18,705
Total stockholders' equity	1,511,694		1,469,955
Total liabilities and stockholders' equity	$	12,873,366	$	12,798,429

The accompanying notes are an integral part of these statements

3

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME – UNAUDITED

	Three Months Ended
	March 31,
(Dollars in thousands, except per share data)	2021		2020
Interest income:
Interest and fees on loans	$	107,428	$	75,882
Interest on loans held for sale	537		291
Interest on deposits with banks	46		180
Interest and dividends on investment securities:
Taxable	3,899		6,132
Tax-advantaged	2,351		1,372
Interest on federal funds sold	—		1
Total interest income	114,261		83,858
Interest expense:
Interest on deposits	4,830		13,518
Interest on retail repurchase agreements and federal funds purchased	53		580
Interest on advances from FHLB	2,276		3,145
Interest on subordinated debt	2,502		2,281
Total interest expense	9,661		19,524
Net interest income	104,600		64,334
Provision/ (credit) for credit losses	(34,708)		24,469
Net interest income after provision/ (credit) for credit losses	139,308		39,865
Non-interest income:
Investment securities gains	58		169
Service charges on deposit accounts	1,852		2,253
Mortgage banking activities	10,169		3,033
Wealth management income	8,730		6,966
Insurance agency commissions	2,153		2,129
Income from bank owned life insurance	680		645
Bank card fees	1,518		1,320
Other income	3,706		1,653
Total non-interest income	28,866		18,168
Non-interest expense:
Salaries and employee benefits	36,652		28,053
Occupancy expense of premises	5,487		4,581
Equipment expense	3,222		2,751
Marketing	1,212		1,189
Outside data services	2,283		1,582
FDIC insurance	1,492		482
Amortization of intangible assets	1,697		600
Merger and acquisition expense	45		1,454
Professional fees and services	1,731		1,826
Other expenses	14,352		5,228
Total non-interest expense	68,173		47,746
Income before income tax expense	100,001		10,287
Income tax expense	24,537		300
Net income	$	75,464	$	9,987
Per share information:
Basic net income per common share	$	1.59	$	0.29
Diluted net income per common share	$	1.58	$	0.28
Dividends declared per share	$	0.32	$	0.30

The accompanying notes are an integral part of these statements

4

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME – UNAUDITED

	Three Months Ended
	March 31,
(In thousands)	2021		2020
Net income	$	75,464	$	9,987
Other comprehensive income/ (loss):
Investments available-for-sale:
Net change in unrealized gains/ (losses) on investments available-for-sale	(28,855)		14,263
Related income tax expense/ (benefit)	7,377		(3,624)
Net investment gains reclassified into earnings	(58)		(169)
Related income tax expense	15		42
Net effect on other comprehensive income/ (loss)	(21,521)		10,512
Defined benefit pension plan:
Net change of unrealized loss	227		219
Related income tax benefit	(63)		(55)
Net effect on other comprehensive income/ (loss)	164		164
Total other comprehensive income/ (loss)	(21,357)		10,676
Comprehensive income	$	54,107	$	20,663

The accompanying notes are an integral part of these statements

5

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY – UNAUDITED

(Dollars in thousands, except per share data)	Common Stock		Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income/ (Loss)		Total Stockholders' Equity
Balances at January 1, 2021	$	47,057	$	846,922	$	557,271	$	18,705	$	1,469,955
Net income	—		—		75,464		—		75,464
Other comprehensive loss, net of tax	—		—		—		(21,357)		(21,357)
Total other comprehensive income									54,107
Common stock dividends - $0.32 per share	—		—		(15,182)		—		(15,182)
Stock compensation expense	—		947		—		—		947
Common stock issued pursuant to:
Stock option plan - 102,365 shares	102		1,429		—		—		1,531
Employee stock purchase plan - 20,417 shares	20		521		—		—		541
Restricted stock vesting, net of withholding - 7,830 shares	8		(213)		—		—		(205)
Balances at March 31, 2021	$	47,187	$	849,606	$	617,553	$	(2,652)	$	1,511,694
Balances at January 1, 2020	$	34,970	$	586,622	$	515,714	$	(4,332)	$	1,132,974
Net income	—		—		9,987		—		9,987
Other comprehensive income, net of tax	—		—		—		10,676		10,676
Total other comprehensive income									20,663
Common stock dividends - $0.30 per share	—		—		(10,544)		—		(10,544)
Stock compensation expense	—		754		—		—		754
Common stock issued pursuant to:
Stock option plan - 6,013 shares	6		116		—		—		122
Employee stock purchase plan - 8,617 shares	9		281		—		—		290
Adoption of ASC 326 - Financial Instruments - Credit Losses	—		—		(2,223)		—		(2,223)
Common stock repurchase - 820,328 shares	(820)		(24,882)		—		—		(25,702)
Balances at March 31, 2020	$	34,165	$	562,891	$	512,934	$	6,344	$	1,116,334

The accompanying notes are an integral part of these statements

6

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS – UNAUDITED

	Three Months Ended March 31,
(Dollars in thousands)	2021		2020
Operating activities:
Net income	$	75,464	$	9,987
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,462		3,427
Provision/ (credit) for credit losses	(34,708)		24,469
Share based compensation expense	947		754
Deferred income tax/ (benefit)	9,125		(5,205)
Origination of loans held for sale	(536,747)		(217,560)
Proceeds from sales of loans held for sale	540,736		208,409
Gains on sales of loans held for sale	(10,625)		(4,262)
Losses on sale of other real estate owned	—		9
Investment securities gains	(58)		(169)
Tax benefit associated with share based compensation	426		28
Net (increase)/ decrease in accrued interest receivable	1,872		(588)
Net increase in other assets	(9,461)		(19,317)
Net increase/ (decrease) accrued expenses and other liabilities	(12,786)		7,976
Other, net	370		5,055
Net cash provided by operating activities	28,017		13,013
Investing activities:
Sales/ (purchases) of equity securities	20,913		(10,582)
Purchases of investments available-for-sale	(280,942)		(241,682)
Proceeds from sales of investment available-for-sale	100,822		13,104
Proceeds from maturities, calls and principal payments of investments available-for-sale	99,668		127,111
Net increase in loans	(37,247)		(17,760)
Proceeds from the sales of other real estate owned	—		27
Cash paid for the acquisition of business activity of RPJ, net of cash acquired	—		(26,925)
Sales of/ (expenditures for) premises and equipment	420		(696)
Net cash used in investing activities	(96,366)		(157,403)
Financing activities:
Net increase in deposits	646,196		153,555
Net decrease in in retail repurchase agreements and federal funds purchased	(353,839)		(88,300)
Proceeds from FHLB advances	—		250,000
Repayment of FHLB advances	(279,075)		(9,716)
Retirement of subordinated debt	—		(10,310)
Proceeds from issuance of common stock	2,072		412
Stock tendered for payment of withholding taxes	(205)		—
Repurchase of common stock	—		(25,702)
Dividends paid	(15,182)		(10,544)
Net cash provided by/ (used in) financing activities	(33)		259,395
Net increase/ (decrease) in cash and cash equivalents	(68,382)		115,005
Cash and cash equivalents at beginning of period	297,003		146,103
Cash and cash equivalents at end of period	$	228,621	$	261,108
Supplemental disclosures:
Interest payments	$	11,533	$	17,055
Income tax payments, net of refunds of $1,834 in 2021	22,276		—

The accompanying notes are an integral part of these statements

7

SANDY SPRING BANCORP, INC. AND SUBSIDIARIES

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED

NOTE 1 – SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations

Sandy Spring Bancorp, Inc. ("Sandy Spring" or, together with its subsidiaries, the "Company"), a Maryland corporation, is the bank holding company for Sandy Spring Bank (the “Bank”). Independent and community-oriented, Sandy Spring Bank offers a broad range of commercial banking, retail banking, mortgage services and trust services throughout central Maryland, Northern Virginia, and the greater Washington, D.C. market. Sandy Spring Bank also offers a comprehensive menu of insurance and wealth management services through its subsidiaries, Sandy Spring Insurance Corporation (“Sandy Spring Insurance”), West Financial Services, Inc. (“West Financial”) and Rembert Pendleton Jackson (“RPJ”).

Basis of Presentation

The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America (“GAAP”), prevailing practices within the financial services industry for interim financial information and Rule 10-01 of Regulation S-X. Accordingly, the interim financial statements do not include all of the information and notes required for complete financial statements. The following summary of significant accounting policies of the Company is presented to assist the reader in understanding the financial and other data presented in this report. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for any future periods or for the year ending December 31, 2021. In the opinion of management, all adjustments necessary for a fair presentation of the results of the interim periods have been included. Certain reclassifications have been made to prior period amounts, as necessary, to conform to the current period presentation. The Company has evaluated subsequent events through the date of the issuance of its financial statements.

These statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s 2020 Annual Report on Form 10-K as filed with the Securities and Exchange Commission (“SEC”) on February 19, 2021. There have been no significant changes to any of the Company’s accounting policies as disclosed in the 2020 Annual Report on Form 10-K.

Principles of Consolidation

The unaudited Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiary, Sandy Spring Bank, and its subsidiaries, Sandy Spring Insurance, West Financial and RPJ. Consolidation has resulted in the elimination of all intercompany accounts and transactions. See Note 18 for more information on the Company’s segments and consolidation.

Use of Estimates

The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, in addition to affecting the reported amounts of revenues earned and expenses incurred during the reporting period. Actual results could differ from those estimates. Estimates that could change significantly relate to the provision for credit losses and the related allowance, potential impairment of goodwill or other intangible assets, valuation of investment securities and the determination of whether available-for-sale debt securities with fair values less than amortized costs are impaired and require an allowance for credit losses, valuation of other real estate owned, valuation of share based compensation, the assessment that a liability should be recognized with respect to any matters under litigation, the calculation of current and deferred income taxes, and the actuarial projections related to pension expense and the related liability.

Cash Flows

For purposes of reporting cash flows, cash and cash equivalents include cash and due from banks, federal funds sold and interest-bearing deposits with banks (items with stated original maturity of three months or less).

Revenue from Contracts with Customers

The Company’s revenue includes net interest income on financial instruments and non-interest income. Specific categories of revenue are presented in the Condensed Consolidated Statements of Income. Most of the Company’s revenue is not within the scope of Accounting Standard Codification (“ASC”) 606 – Revenue from Contracts with Customers. For revenue within the scope of ASC 606, the Company provides services to customers and has related performance obligations. The revenue from such services is recognized upon satisfaction of all contractual performance obligations. The following discusses key revenue streams within the scope of revenue recognition guidance.

8

Wealth Management Income

West Financial and RPJ provide comprehensive investment management and financial planning services. Wealth management income is comprised of income for providing trust, estate and investment management services. Trust services include acting as a trustee for corporate or personal trusts. Investment management services include investment management, record-keeping and reporting of security portfolios. Fees for these services are recognized based on a contractually-agreed fixed percentage applied to net assets under management at the end of each reporting period. The Company does not charge/recognize any performance-based fees.

Insurance Agency Commissions

Sandy Spring Insurance, a subsidiary of the Bank, performs the function of an insurance intermediary by introducing the policyholder and insurer and is compensated by a commission fee for placement of an insurance policy. Sandy Spring Insurance does not provide any captive management services or any claim handling services. Commission fees are set as a percentage of the premium for the insurance policy for which Sandy Spring Insurance is a producer. Sandy Spring Insurance recognizes revenue when the insurance policy has been contractually agreed to by the insurer and policyholder (at transaction date).

Service Charges on Deposit Accounts

Service charges on deposit accounts are earned on depository accounts for consumer and commercial account holders and include fees for account and overdraft services. Account services include fees for event-driven services and periodic account maintenance activities. An obligation for event-driven services is satisfied at the time of the event when service is delivered and revenue recognized as earned. Obligation for maintenance activities is satisfied over the course of each month and revenue is recognized at month end. The overdraft services obligation is satisfied at the time of the overdraft and revenue is recognized as earned.

Loan Financing Receivables

The Company’s financing receivables consist primarily of loans that are stated at their principal balance outstanding, net of any unearned income, acquisition fair value marks and deferred loan origination fees and costs. Interest income on loans is accrued at the contractual rate based on the principal balance outstanding. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.

Loans are considered past due or delinquent when the principal or interest due in accordance with the contractual terms of the loan agreement or any portion thereof remains unpaid after the due date of the scheduled payment. Immaterial shortfalls in payment amounts do not necessarily result in a loan being considered delinquent or past due. If any payments are past due and subsequent payments are resumed without payment of the delinquent amount, the loan shall continue to be considered past due. Whenever any loan is reported delinquent on a principal or interest payment or portion thereof, the amount reported as delinquent is the outstanding principal balance of the loan.

Loans, except for consumer installment loans, are placed into non-accrual status when any portion of the loan principal or interest becomes 90 days past due. Management may determine that certain circumstances warrant earlier discontinuance of interest accruals on specific loans if an evaluation of other relevant factors (such as bankruptcy, interruption of cash flows, etc.) indicates collection of amounts contractually due is unlikely. These loans are considered, collectively, to be non-performing loans. Consumer installment loans that are not secured by real estate are not placed on non-accrual, but are charged down to their net realizable value when they are four months past due. Loans designated as non-accrual have all previously accrued but unpaid interest reversed. Interest income is not recognized on non-accrual loans. All payments received on non-accrual loans are applied using a cost-recovery method to reduce the outstanding principal balance until the loan returns to accrual status. Loans may be returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Loans considered to be TDRs are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured collateral-dependent loans are individually assessed for allowance for credit losses and may either be in accruing or non-accruing status. Non-accruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category if the borrower is no longer experiencing financial difficulty, a re-underwriting event took place, and the revised loan terms of the subsequent restructuring agreement are considered to be consistent with terms that can be obtained in the market for loans with comparable credit risk.

Allowance for Credit Losses

The allowance for credit losses (“allowance” or “ACL”) represents an amount which, in management's judgment, is adequate to absorb the lifetime expected losses that may be sustained on outstanding loans at the balance sheet date based on the evaluation

9

of the size and current risk characteristics of the loan portfolio, past events, current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience. The allowance is measured and recorded upon the initial recognition of a financial asset. The allowance is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision or credit for credit losses, which is recorded as a current period expense.

Determination of the adequacy of the allowance is inherently complex and requires the use of significant and highly subjective estimates. The reasonableness of the allowance is reviewed periodically by the Risk Committee of the Board of Directors and formally approved quarterly by that same committee of the Board.

The Company’s methodology for estimating the allowance includes: (1) a collective quantified reserve that reflects the Company’s historical default and loss experience adjusted for expected economic conditions throughout a reasonable and supportable period and the Company’s prepayment and curtailment rates; (2) collective qualitative factors that consider concentrations of the loan portfolio, expected changes to the economic forecasts, large relationships, early delinquencies, and factors related to credit administration, including, among others, loan-to-value ratios, borrowers’ risk rating and credit score migrations; and (3) individual allowances on collateral-dependent loans where borrowers are experiencing financial difficulty or when the Company determines that the foreclosure is probable. The Company excludes accrued interest from the measurement of the allowance as the Company has a non-accrual policy to reverse any accrued, uncollected interest income as loans are moved to non-accrual status.

Loans are pooled into segments based on the similar risk characteristics of the underlying borrowers, in addition to consideration of collateral type, industry and business purpose of the loans. Portfolio segments used to estimate the allowance are the same as portfolio segments used for general credit risk management purposes. Refer to Note 4 for more details on the Company’s portfolio segments.

The Company applies two calculation methodologies to estimate the collective quantified component of the allowance: discounted cash flows method and weighted average remaining life method. Allowance estimates on commercial acquisition, development and construction (“AD&C”) and residential construction segments are based on the weighted average remaining life method. Allowance estimates on all other portfolio segments are based on the discounted cash flows method. Segments utilizing the discounted cash flows method are further sub-segmented into risk level pools, determined either by risk rating for commercial loans or Beacon Scores ranges for residential and consumer loans. To better manage risk and reasonably determine the sufficiency of reserves, this segregation allows the Company to monitor the allowance component applicable to higher risk loans separate from the remainder of the portfolio. Collective calculation methodologies utilize the Company’s historical default and loss experience adjusted for future economic forecasts. The reasonable and supportable forecast period represents a two-year economic outlook for the applicable economic variables. Following the end of the reasonable and supportable forecast period expected losses revert back to the historical mean over the next two years on a straight-line basis. Economic variables that have the most significant impact on the allowance include: unemployment rate, house price index and number of business bankruptcies. Contractual loan level cash flows within the discounted cash flows methodology are adjusted for the Company’s historical prepayment and curtailment rate experience.

The individual reserve assessment is applied to collateral dependent loans where borrowers are experiencing financial difficulty or when the Company determines that a foreclosure is probable. The determination of the fair value of the collateral depends on whether a repayment of the loan is expected to be from the sale or the operation of the collateral. When a repayment is expected from the operation of the collateral, the Company uses the present value of expected cash flows from the operation of the collateral as the fair value. When the repayment of the loan is expected from the sale of the collateral the fair value of the collateral is based on an observable market price or the collateral’s appraised value, less estimated costs to sell. Third party appraisals used in the individual reserve assessment are conducted at least annually with underlying assumptions that are reviewed by management. Third party appraisals may be obtained on a more frequent basis if deemed necessary. Internal evaluations of collateral value are conducted quarterly to ensure any further deterioration of the collateral value is recognized on a timely basis. During the individual reserve assessment, management also considers the potential future changes in the value of the collateral over the remainder of the loan’s remaining life. The Company may receive updated appraisals which contradict the preliminary determination of fair value used to establish an individual allowance on a loan. In these instances the individual allowance is adjusted to reflect the Company’s evaluation of the updated appraised fair value. In the event a loss was previously confirmed and the loan was charged down to the estimated fair value based on a previous appraisal, the balance of partially charged-off loans are not subsequently increased, but could be further decreased depending on the direction of the change in fair value. Payments on fully or partially charged-off loans are accounted for under the cost-recovery method. Under this method, all payments received are applied on a cash basis to reduce the entire outstanding principal balance, then to recognize a recovery of all previously charged-off amounts before any interest income may be recognized. Based on the individual reserve assessment, if the Company determines that the fair value of the collateral is less than the amortized cost basis of the loan, an individual allowance will be established measured as the difference between the fair value of the collateral

10

(less costs to sell) and the amortized cost basis of the loan. Once a loss has been confirmed, the loan is charged-down to its estimated fair value.

Large groups of smaller non-accrual homogeneous loans are not individually evaluated for allowance and include residential permanent and construction mortgages and consumer installment loans. These portfolios are reserved for on a collective basis using historical loss rates of similar loans over the weighted average life of each pool.

The Company reviews its unfunded commitments to determine if they are unconditionally cancellable by the Company. If the unfunded commitment is determined to not be unconditionally cancellable by the Company, a reserve for unfunded commitments is established. The reserve for unfunded commitments considers both the likelihood that the funding will occur and an estimate of expected credit losses over the life of the commitment.

Management believes it uses relevant information available to make determinations about the allowance and that it has established the existing allowance in accordance with GAAP. However, the determination of the allowance requires significant judgment, and estimates of expected lifetime losses in the loan portfolio can vary significantly from the amounts actually observed. While management uses available information to recognize expected losses, future additions to the allowance may be necessary based on changes in the loans comprising the portfolio, changes in the current and forecasted economic conditions, changes to the interest rate environment which may directly impact prepayment and curtailment rate assumptions, and changes in the financial condition of borrowers.

Acquired Loans

Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value. The allowance for credit losses related to the acquired loan portfolio is not carried over. Acquired loans are classified into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (“PCD”) loans, or loans with no evidence of credit deterioration (“non-PCD”).

PCD loans are defined as a loan or pool of loans that have experienced more-than-insignificant credit deterioration since the origination date. The Company uses a combination of individual and pooled review approaches to determine if acquired loans are PCD. At acquisition, the Company considers a number of factors to determine if an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors include:

•loans classified as non-accrual,

•loans with risk rating of special mention or worse (using the Company's risk rating scale),

•loans with multiple risk rating downgrades since origination,

•loans with evidence of being 60 days or more past due,

•loans previously modified in a troubled debt restructuring,

•loans that received an interest only or payment deferral modification, and

•loans in industries that show evidence of additional risk due to economic conditions.

The initial allowance related to PCD loans that share similar risk characteristics is established using a pooled approach. The Company uses either a discounted cash flow or weighted average remaining life method to determine the required level of the allowance. PCD loans that were classified as non-accrual as of the acquisition date and are collateral dependent are assessed for allowance on an individual basis.

For PCD loans, an initial allowance is established on the acquisition date and added to the fair value of the loan to arrive at acquisition date amortized cost. Accordingly, no provision for credit losses is recognized on PCD loans at the acquisition date. Subsequent to the acquisition date, the initial allowance on PCD loans will increase or decrease based on future evaluations, with changes recognized in the provision for credit losses.

Non-PCD loans are pooled into segments together with originated loans that share similar risk characteristics and have an allowance established on the acquisition date, which is recognized in the current period provision for credit losses.

Determining the fair value of the acquired loans involves estimating the principal and interest payment cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life, interest rate profile, market interest rate environment, payment schedules, risk ratings, probability of default and loss given default, and estimated prepayment rates. For PCD loans, the non-credit discount or premium is allocated to individual loans as determined by the difference between the loan’s unpaid principal balance and amortized cost basis. The non-credit premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan. For non-PCD loans, the fair value discount or premium is

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allocated to individual loans and recognized into interest income on a level yield basis over the remaining expected life of the loan.

Leases

The Company determines if an arrangement is a lease at inception. All of the Company’s leases are currently classified as operating leases and are included in other assets and other liabilities on the Company’s Condensed Consolidated Statements of Condition.

Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease arrangements. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of the expected future lease payments over the remaining lease term. In determining the present value of future lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The operating ROU assets are adjusted for any lease payments made at or before the lease commencement date, initial direct costs, any lease incentives received and, for acquired leases, any favorable or unfavorable fair value adjustments. The present value of the lease liability may include the impact of options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options provided in the lease terms. Lease expense is recognized on a straight-line basis over the expected lease term. Lease agreements that include lease and non-lease components, such as common area maintenance charges, are accounted for separately.

Pending Accounting Pronouncements

In March 2020, FASB released Accounting Standards Update (“ASU”) 2020-04 - Reference Rate Reform (Topic 848), which provides optional guidance to ease the accounting burden in accounting for, or recognizing the effects from, reference rate reform on financial reporting. The new standard is a result of LIBOR likely being discontinued as an available benchmark rate. The standard is elective and provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, or other transactions that reference LIBOR, or another reference rate expected to be discontinued. The amendments in the update are effective for all entities between March 12, 2020 and December 31, 2022. The Company has established a cross-functional working group to guide the Company’s transition from LIBOR and has begun efforts to transition to alternative rates consistent with industry timelines. The Company has identified its products that utilize LIBOR and has implemented enhanced fallback language to facilitate the transition to alternative reference rates. The Company is evaluating existing platforms and systems and preparing to offer new rates.

NOTE 2 – ACQUISITION OF REVERE BANK

On April 1, 2020 (“Acquisition Date”), the Company completed the acquisition of Revere Bank (“Revere”), a Maryland chartered commercial bank, in accordance with the definitive agreement that was entered on September 23, 2019 by and among the Company, the Bank and Revere. In connection with the completion of the merger, former Revere shareholders received 1.05 shares of Sandy Spring common stock for each share of Revere common stock they held. Based on the $22.64 per share closing price of Sandy Spring common stock on March 31, 2020, and including the fair value of options converted or cashed-out, the total transaction value was approximately $293.0 million. Upon completion of the acquisition, Sandy Spring shareholders owned approximately 74 percent of the combined company, and former Revere shareholders owned approximately 26 percent.

As of March 31, 2020, Revere, headquartered in Rockville, MD, had more than $2.8 billion in assets and operated 11 full-service community banking offices throughout the Washington D.C. metropolitan region.

The acquisition of Revere was accounted for as a business combination using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration paid were recorded at estimated fair values on the Acquisition Date. The amount of goodwill recognized as of the Acquisition Date was approximately $0.8 million. After immaterial adjustments recorded during the fourth quarter of 2020, the amount of goodwill recognized as of December 31, 2021 was $0.5 million. Management's final review of assets acquired and liabilities assumed did not result in additional adjustments during the first quarter of 2021, and goodwill was determined to be final as of March 31, 2021. The goodwill is not deductible for tax purposes.

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The consideration paid for Revere’s common equity and outstanding stock options and the provisional fair values of acquired identifiable assets and assumed identifiable liabilities as of March 31, 2021 were as follows:

(Dollars in thousands, except per share data)	March 31, 2021
Purchase price:
Fair value of common shares issued (12,768,949 shares) based on Sandy Spring's share price of $22.64	$	289,089
Fair value of Revere stock options converted to Sandy Spring stock options	3,611
Cash paid for cashed-out Revere stock options	291
Cash for fractional shares	11
Total purchase price	$	293,002
Identifiable assets:
Cash and cash equivalents	$	80,744
Investments available-for-sale	180,752
Loans	2,502,244
Premises and equipment	3,443
Accrued interest receivable	7,651
Core deposit intangible asset	18,360
Other assets	53,162
Total identifiable assets	$	2,846,356
Identifiable liabilities:
Deposits	$	2,322,422
Borrowings	205,514
Other liabilities	25,933
Total identifiable liabilities	$	2,553,869
Fair value of net assets acquired including identifiable intangible assets	292,487
Goodwill	$	515

NOTE 3 – INVESTMENTS

Investments available-for-sale

The amortized cost and estimated fair values of investments available-for-sale at the dates indicated are presented in the following table:

	March 31, 2021								December 31, 2020
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. treasuries and government agencies	$	47,641	$	447	$	(2)	$	48,086	$	42,750	$	549	$	(2)	$	43,297
State and municipal	362,815		7,926		(4,709)		366,032		377,108		13,470		(211)		390,367
Mortgage-backed and asset-backed	1,001,475		15,222		(10,518)		1,006,179		881,201		24,078		(847)		904,432
Corporate debt	7,000		583		—		7,583		9,100		825		—		9,925
Total investments available-for-sale	$	1,418,931	$	24,178	$	(15,229)	$	1,427,880	$	1,310,159	$	38,922	$	(1,060)	$	1,348,021

Any unrealized losses in the U.S. treasuries and government agencies, state and municipal, mortgage-backed and asset-backed investment securities at March 31, 2021 are due to changes in interest rates and not credit-related events. As such, no allowance for credit losses is required at March 31, 2021. Unrealized losses on investment securities are expected to recover over time as these securities approach maturity. The Company does not intend to sell, nor is it more likely than not it will be required to sell, these securities and has sufficient liquidity to hold these securities for an adequate period of time, which may be maturity, to allow for any anticipated recovery in fair value.

The mortgage-backed securities portfolio at March 31, 2021 is composed entirely of either the most senior tranches of GNMA, FNMA or FHLMC collateralized mortgage obligations ($318.5 million), GNMA, FNMA or FHLMC mortgage-backed securities ($626.0 million) or SBA asset-backed securities ($61.7 million).

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Gross unrealized losses and fair value by length of time that the individual available-for-sale securities have been in an unrealized loss position at the dates indicated are presented in the following tables:

	March 31, 2021
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	1	$	4,972	$	2	$	—	$	—	$	4,972	$	2
State and municipal	43	115,530		4,709		—		—		115,530		4,709
Mortgage-backed and asset-backed	46	373,235		10,509		4,968		9		378,203		10,518
Total	90	$	493,737	$	15,220	$	4,968	$	9	$	498,705	$	15,229

	December 31, 2020
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	2	$	25,369	$	2	$	—	$	—	$	25,369	$	2
State and municipal	8	22,753		211		—		—		22,753		211
Mortgage-backed and asset-backed	24	44,746		154		76,879		693		121,625		847
Total	34	$	92,868	$	367	$	76,879	$	693	$	169,747	$	1,060

The estimated fair values and amortized costs of debt securities available-for-sale by contractual maturity at the dates indicated are provided in the following table. The Company has allocated mortgage-backed securities into the four maturity groupings reflected in the following tables using the expected average life of the individual securities based on statistics provided by independent third party industry sources. Expected maturities will differ from contractual maturities as borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2021				December 31, 2020
(In thousands)	Fair Value		Amortized Cost		Fair Value		Amortized Cost
U.S. treasuries and government agencies:
One year or less	$	36,904	$	36,744	$	33,963	$	33,833
One to five years	11,182		10,897		9,334		8,917
Five to ten years	—		—		—		—
After ten years	—		—		—		—
State and municipal:
One year or less	13,175		13,098		16,581		16,458
One to five years	38,077		36,965		44,910		43,857
Five to ten years	49,417		47,569		59,059		56,130
After ten years	265,363		265,183		269,817		260,663
Mortgage-backed and asset-backed:
One year or less	1,923		1,905		1		1
One to five years	20,180		19,822		21,637		21,229
Five to ten years	67,401		66,718		74,142		72,481
After ten years	916,675		913,030		808,652		787,490
Corporate debt:
One year or less	—		—		—		—
One to five years	—		—		2,318		2,100
Five to ten years	7,583		7,000		7,607		7,000
After ten years	—		—		—		—
Total available-for-sale debt securities	$	1,427,880	$	1,418,931	$	1,348,021	$	1,310,159

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At March 31, 2021 and December 31, 2020, investments available-for-sale with a book value of $454.0 million and $465.7 million, respectively, were pledged as collateral for certain government deposits and for other purposes as required or permitted by law. The outstanding balance of no single issuer, except for U.S. Agencies securities, exceeded ten percent of stockholders' equity at March 31, 2021 and December 31, 2020.

Equity securities

Other equity securities at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Federal Reserve Bank stock	$	34,028	$	38,650
Federal Home Loan Bank of Atlanta stock	10,142		26,433
Marketable equity securities	677		677
Total equity securities	$	44,847	$	65,760

NOTE 4 – LOANS

Outstanding loan balances at March 31, 2021 and December 31, 2020, are net of unearned income, including net deferred loan fees of $30.3 million and $24.5 million, respectively. Net deferred loan fees at March 31, 2021 and December 31, 2020, includes $27.0 million and $21.2 million, respectively, related to the loans originated under the Paycheck Protection Program (“PPP”).

The loan portfolio segment balances at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Commercial real estate:
Commercial investor real estate	$	3,652,418	$	3,634,720
Commercial owner-occupied real estate	1,644,848		1,642,216
Commercial AD&C	1,051,013		1,050,973
Commercial business	2,411,109		2,267,548
Total commercial loans	8,759,388		8,595,457
Residential real estate:
Residential mortgage	1,022,546		1,105,179
Residential construction	171,028		182,619
Consumer	493,904		517,254
Total residential and consumer loans	1,687,478		1,805,052
Total loans	$	10,446,866	$	10,400,509

Portfolio Segments

The Company currently manages its credit products and the respective exposure to credit losses (credit risk) by the following specific portfolio segments (classes) which are levels at which the Company develops and documents its systematic methodology to determine the allowance for credit losses attributable to each respective portfolio segment. These segments are:

•Commercial investor real estate loans - Commercial investor real estate loans consist of loans secured by nonowner-occupied properties where an established banking relationship exists and involves investment properties for warehouse, retail, and office space with a history of occupancy and cash flow. This commercial investor real estate category contains mortgage loans to the developers and owners of commercial real estate where the borrower intends to operate or sell the property at a profit and use the income stream or proceeds from the sale(s) to repay the loan.

•Commercial owner-occupied real estate loans - Commercial owner-occupied real estate loans consist of commercial mortgage loans secured by owner occupied properties where an established banking relationship exists and involves a variety of property types to conduct the borrower’s operations. The decision to extend a loan is based upon the borrower’s financial health and the ability of the borrower and the business to repay. The primary source of repayment for this type of loan is the cash flow from the operations of the business.

•Commercial acquisition, development and construction loans - Commercial acquisition, development and construction loans are intended to finance the construction of commercial properties and include loans for the

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acquisition and development of land. Construction loans represent a higher degree of risk than permanent real estate loans and may be affected by a variety of additional factors such as the borrower’s ability to control costs and adhere to time schedules and the risk that constructed units may not be absorbed by the market within the anticipated time frame or at the anticipated price. The loan commitment on these loans often includes an interest reserve that allows the lender to periodically advance loan funds to pay interest charges on the outstanding balance of the loan.

•Commercial business loans - Commercial loans are made to provide funds for equipment and general corporate needs. Repayment of a loan primarily comes from the funds obtained from the operation of the borrower’s business. Commercial loans also include lines of credit that are utilized to finance a borrower’s short-term credit needs and/or to finance a percentage of eligible receivables and inventory. Loans issued under the PPP are also included in this category, a substantial portion of which are expected to be forgiven by the Small Business Administration pursuant to the CARES Act.

•Residential mortgage loans - The residential mortgage loans category contains permanent mortgage loans principally to consumers secured by residential real estate. Residential real estate loans are evaluated for the adequacy of repayment sources at the time of approval, based upon measures including credit scores, debt-to-income ratios, and collateral values. Loans may be either conforming or non-conforming.

•Residential construction loans - The Company makes residential construction loans generally to provide interim financing on residential property during the construction period. Borrowers are typically individuals who will ultimately occupy the single-family dwelling. Loan funds are disbursed periodically as pre-specified stages of completion are attained based upon site inspections.

•Consumer loans - This category of loans includes primarily home equity loans and lines, installment loans, personal lines of credit, and other loans. The home equity category consists mainly of revolving lines of credit to consumers which are secured by residential real estate. These loans are typically secured with second mortgages on the homes. Other consumer loans include installment loans used by customers to purchase automobiles, boats and recreational vehicles.

NOTE 5 – CREDIT QUALITY ASSESSMENT

Allowance for Credit Losses

Summary information on the allowance for credit loss activity for the period indicated is provided in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Balance at beginning of period	$	165,367	$	56,132
Initial allowance on PCD loans at adoption of ASC 326	—		2,762
Transition impact of adopting ASC 326	—		2,983
Provision for credit losses	(34,708)		24,469
Loan charge-offs	(743)		(654)
Loan recoveries	445		108
Net charge-offs	(298)		(546)
Balance at period end	$	130,361	$	85,800

The following table provides summary information regarding collateral dependent loans individually evaluated for credit loss at the dates indicated:

(In thousands)	March 31, 2021		December 31, 2020
Collateral dependent loans individually evaluated for credit loss with an allowance	$	32,241	$	20,717
Collateral dependent loans individually evaluated for credit loss without an allowance	49,757		77,001
Total individually evaluated collateral dependent loans	$	81,998	$	97,718
Allowance for credit losses related to loans evaluated individually	$	13,101	$	11,405
Allowance for credit losses related to loans evaluated collectively	117,260		153,962
Total allowance for credit losses	$	130,361	$	165,367

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The following tables provide information on the activity in the allowance for credit losses by the respective loan portfolio segment for the period indicated:

 

	For the Three Months Ended March 31, 2021
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Provision for credit losses	(8,981)			(5,594)			760			(14,343)			(4,018)			(849)			(1,683)			(34,708)
Charge-offs	—			—			—			(650)			—			—			(93)			(743)
Recoveries	27			—			—			16			270			—			132			445
Net recoveries (charge-offs)	27			—			—			(634)			270			—			39			(298)
Balance at end of period	$	48,450		$	14,467		$	22,917		$	31,829		$	7,547		$	653		$	4,498		$	130,361
Total loans	$	3,652,418		$	1,644,848		$	1,051,013		$	2,411,109		$	1,022,546		$	171,028		$	493,904		$	10,446,866
Allowance for credit losses to total loans ratio	1.33		%	0.88		%	2.18		%	1.32		%	0.74		%	0.38		%	0.91		%	1.25		%
Balance of loans individually evaluated for credit loss	$	42,776		$	8,316		$	14,975		$	13,831		$	1,737		$	—		$	363		$	81,998
Allowance related to loans evaluated individually	$	2,988		$	—		$	603		$	9,510		$	—		$	—		$	—		$	13,101
Individual allowance to loans evaluated individually ratio	6.99		%	—		%	4.03		%	68.76		%	—		%	—		%	—		%	15.98		%
Balance of loans collectively evaluated for credit loss	$	3,609,642		$	1,636,532		$	1,036,038		$	2,397,278		$	1,020,809		$	171,028		$	493,541		$	10,364,868
Allowance related to loans evaluated collectively	$	45,462		$	14,467		$	22,314		$	22,319		$	7,547		$	653		$	4,498		$	117,260
Collective allowance to loans evaluated collectively ratio	1.26		%	0.88		%	2.15		%	0.93		%	0.74		%	0.38		%	0.91		%	1.13		%

	For the Year Ended December 31, 2020
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	18,407		$	6,884		$	7,590		$	11,395		$	8,803		$	967		$	2,086		$	56,132
Initial allowance on PCD loans at adoption of ASC 326	1,114			—			—			1,549			—			—			99			2,762
Transition impact of adopting ASC 326	(3,125)			387			2,576			2,988			(388)			(275)			820			2,983
Initial allowance on acquired Revere PCD loans	7,973			2,782			1,248			6,289			243			6			87			18,628
Provision for credit losses	33,431			10,008			10,743			24,374			3,016			798			3,299			85,669
Charge-offs	(411)			—			—			(491)			(484)			—			(433)			(1,819)
Recoveries	15			—			—			702			105			6			184			1,012
Net recoveries (charge-offs)	(396)			—			—			211			(379)			6			(249)			(807)
Balance at end of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Total loans	$	3,634,720		$	1,642,216		$	1,050,973		$	2,267,548		$	1,105,179		$	182,619		$	517,254		$	10,400,509
Allowance for credit losses to total loans ratio	1.58		%	1.22		%	2.11		%	2.06		%	1.02		%	0.82		%	1.19		%	1.59		%
Balance of loans individually evaluated for credit loss	$	45,227		$	11,561		$	15,044		$	23,648		$	1,874		$	—		$	364		$	97,718
Allowance related to loans evaluated individually	$	1,273		$	—		$	603		$	9,529		$	—		$	—		$	—		$	11,405
Individual allowance to loans evaluated individually ratio	2.81		%	—		%	4.01		%	40.30		%	—		%	—		%	—		%	11.67		%
Balance of loans collectively evaluated for credit loss	$	3,589,493		$	1,630,655		$	1,035,929		$	2,243,900		$	1,103,305		$	182,619		$	516,890		$	10,302,791
Allowance related to loans evaluated collectively	$	56,131		$	20,061		$	21,554		$	37,277		$	11,295		$	1,502		$	6,142		$	153,962
Collective allowance to loans evaluated collectively ratio	1.56		%	1.23		%	2.08		%	1.66		%	1.02		%	0.82		%	1.19		%	1.49		%

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The following tables present collateral dependent loans individually evaluated for credit loss with the associated allowances for credit losses by the applicable portfolio segment and for the periods indicated:

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	17,686	$	—	$	1,446	$	9,730	$	—	$	—	$	—	$	28,862
Restructured accruing	—		—		—		573		—		—		—		573
Restructured non-accruing	336		—		—		2,470		—		—		—		2,806
Balance	$	18,022	$	—	$	1,446	$	12,773	$	—	$	—	$	—	$	32,241
Allowance	$	2,988	$	—	$	603	$	9,510	$	—	$	—	$	—	$	13,101
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	24,754	$	6,125	$	13,529	$	318	$	—	$	—	$	—	$	44,726
Restructured accruing	—		—		—		111		1,587		—		—		1,698
Restructured non-accruing	—		2,191		—		629		150		—		363		3,333
Balance	$	24,754	$	8,316	$	13,529	$	1,058	$	1,737	$	—	$	363	$	49,757
Total individually evaluated loans:
Non-accruing	$	42,440	$	6,125	$	14,975	$	10,048	$	—	$	—	$	—	$	73,588
Restructured accruing	—		—		—		684		1,587		—		—		2,271
Restructured non-accruing	336		2,191		—		3,099		150		—		363		6,139
Balance	$	42,776	$	8,316	$	14,975	$	13,831	$	1,737	$	—	$	363	$	81,998
Total unpaid contractual principal balance	$	47,547	$	10,306	$	16,157	$	16,088	$	2,814	$	—	$	364	$	93,276

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	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	4,913	$	—	$	1,328	$	11,178	$	—	$	—	$	—	$	17,419
Restructured accruing	—		—		—		589		—		—		—		589
Restructured non-accruing	699		—		—		2,010		—		—		—		2,709
Balance	$	5,612	$	—	$	1,328	$	13,777	$	—	$	—	$	—	$	20,717
Allowance	$	1,273	$	—	$	603	$	9,529	$	—	$	—	$	—	$	11,405
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	39,615	$	9,315	$	13,716	$	9,118	$	—	$	—	$	—	$	71,764
Restructured accruing	—		—		—		126		1,602		—		—		1,728
Restructured non-accruing	—		2,246		—		627		272		—		364		3,509
Balance	$	39,615	$	11,561	$	13,716	$	9,871	$	1,874	$	—	$	364	$	77,001
Total individually evaluated loans:
Non-accruing	$	44,528	$	9,315	$	15,044	$	20,296	$	—	$	—	$	—	$	89,183
Restructured accruing	—		—		—		715		1,602		—		—		2,317
Restructured non-accruing	699		2,246		—		2,637		272		—		364		6,218
Balance	$	45,227	$	11,561	$	15,044	$	23,648	$	1,874	$	—	$	364	$	97,718
Total unpaid contractual principal balance	$	49,920	$	15,309	$	16,040	$	30,958	$	3,225	$	—	$	364	$	115,816

The following tables present average principal balance of total non-accrual loans and contractual interest due on non-accrual loans for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	44,002	$	9,939	$	15,010	$	18,040	$	9,903	$	—	$	7,289	$	104,183
Contractual interest income due on non- accrual loans during the period	$	649	$	185	$	256	$	428	$	110	$	—	$	104	$	1,732

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	26,849	$	6,605	$	4,267	$	16,532	$	11,634	$	—	$	6,675	$	72,562
Contractual interest income due on non- accrual loans during the period	$	6,547	$	2,741	$	4,505	$	2,858	$	918	$	—	$	732	$	18,301

There was no interest income recognized on non-accrual loans during the three months ended March 31, 2021. See Note 1 for additional information on the Company's policies for non-accrual loans. Loans designated as non-accrual have all previously accrued but unpaid interest reversed from interest income. During the three months ended March 31, 2021 new loans placed on non-accrual status totaled $0.4 million and the related amount of reversed uncollected accrued interest was insignificant.

19

Credit Quality

The following section provides information on the credit quality of the loan portfolio for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361
Loans placed on non-accrual	—		—		—		84		140		—		197		421
Non-accrual balances transferred to OREO	—		—		—		—		—		—		—		—
Non-accrual balances charged-off	—		—		—		(650)		—		—		(49)		(699)
Net payments or draws	(2,451)		(3,245)		(69)		(9,220)		(759)		—		(284)		(16,028)
Non-accrual loans brought current	—		—		—		—		—		—		(55)		(55)
Balance at end of period	$	42,776	$	8,316	$	14,975	$	13,147	$	9,593	$	—	$	7,193	$	96,000

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	8,437	$	4,148	$	829	$	8,450	$	12,661	$	—	$	4,107	$	38,632
PCD loans designated as non-accrual (1)	9,544		—		—		2,539		8		—		993		13,084
Loans placed on non-accrual	37,882		8,572		15,844		17,442		1,485		—		4,061		85,286
Non-accrual balances transferred to OREO	—		—		—		—		(70)		—		—		(70)
Non-accrual balances charged-off	(411)		—		—		(446)		(416)		—		(121)		(1,394)
Net payments or draws	(10,225)		(1,059)		(1,629)		(4,169)		(2,598)		—		(1,521)		(21,201)
Non-accrual loans brought current	—		(100)		—		(883)		(858)		—		(135)		(1,976)
Balance at end of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361

(1)Upon the adoption of the CECL standard, the Company transitioned from closed pool level accounting for PCI loans during the first quarter of 2020. Non-accrual loans are determined based on the individual loan level and aggregated for reporting.

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,587,859	$	1,633,446	$	1,031,055	$	2,392,818	$	997,837	$	170,365	$	483,280	$	10,296,660
30-59 days	17,870		3,086		4,983		3,983		9,593		601		1,809		41,925
60-89 days	3,913		—		—		446		3,538		62		1,622		9,581
Total performing loans	3,609,642		1,636,532		1,036,038		2,397,247		1,010,968		171,028		486,711		10,348,166
Non-performing loans:
Non-accrual loans	42,776		8,316		14,975		13,147		9,593		—		7,193		96,000
Loans greater than 90 days past due	—		—		—		31		398		—		—		429
Restructured loans	—		—		—		684		1,587		—		—		2,271
Total non-performing loans	42,776		8,316		14,975		13,862		11,578		—		7,193		98,700
Total loans	$	3,652,418	$	1,644,848	$	1,051,013	$	2,411,109	$	1,022,546	$	171,028	$	493,904	$	10,446,866

20

	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,571,184	$	1,624,265	$	1,033,057	$	2,238,617	$	1,073,963	$	182,557	$	502,548	$	10,226,191
30-59 days	14,046		6,390		29		4,859		16,213		—		5,275		46,812
60-89 days	4,130		—		2,843		263		2,709		62		2,047		12,054
Total performing loans	3,589,360		1,630,655		1,035,929		2,243,739		1,092,885		182,619		509,870		10,285,057
Non-performing loans:
Non-accrual loans	45,227		11,561		15,044		22,933		10,212		—		7,384		112,361
Loans greater than 90 days past due	133		—		—		161		480		—		—		774
Restructured loans	—		—		—		715		1,602		—		—		2,317
Total non-performing loans	45,360		11,561		15,044		23,809		12,294		—		7,384		115,452
Total loans	$	3,634,720	$	1,642,216	$	1,050,973	$	2,267,548	$	1,105,179	$	182,619	$	517,254	$	10,400,509

The credit quality indicators for commercial loans are developed through review of individual borrowers on an ongoing basis. Each borrower is evaluated at least annually with more frequent evaluation of more severely criticized loans. The indicators represent the rating for loans as of the date presented is based on the most recent credit review performed. These credit quality indicators are defined as follows:

Pass - A pass rated credit is not adversely classified because it does not display any of the characteristics for adverse classification.

Special mention – A special mention credit has potential weaknesses that deserve management’s close attention. If uncorrected, such weaknesses may result in deterioration of the repayment prospects or collateral position at some future date. Special mention assets are not adversely classified and do not warrant adverse classification.

Substandard – A substandard loan is inadequately protected by the current net worth and payment capacity of the obligor or of the collateral pledged, if any. Loans classified as substandard generally have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. These loans are characterized by the distinct possibility of loss if the deficiencies are not corrected.

Doubtful – A loan that is classified as doubtful has all the weaknesses inherent in a loan classified as substandard with added characteristics that the weaknesses make collection or liquidation in full highly questionable and improbable, on the basis of currently existing facts, conditions and values.

Loss – Loans classified as a loss are considered uncollectible and of such little value that their continuing to be carried as a loan is not warranted. This classification is not necessarily equivalent to no potential for recovery or salvage value, but rather that it is not appropriate to defer a full write-off even though partial recovery may be effected in the future.

21

The following table provides information about credit quality indicators by the year of origination as of March 31, 2021:

	March 31, 2021
	Term Loans by Origination Year												Revolving
(In thousands)	2021		2020		2019		2018		2017		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	194,465	$	881,973	$	707,450	$	452,909	$	429,839	$	876,375	$	28,844	$	3,571,855
Special Mention	10,000		527		1,993		2,640		701		2,646		—		18,507
Substandard	279		437		6,175		13,555		28,149		13,461		—		62,056
Doubtful	—		—		—		—		—		—		—		—
Total	$	204,744	$	882,937	$	715,618	$	469,104	$	458,689	$	892,482	$	28,844	$	3,652,418
Commercial Owner-Occupied R/E:
Pass	$	47,661	$	287,070	$	375,951	$	222,539	$	188,795	$	485,151	$	4,793	$	1,611,960
Special Mention	—		1,871		4,327		3,586		4,698		5,279		—		19,761
Substandard	—		1,269		4,316		2,031		447		5,064		—		13,127
Doubtful	—		—		—		—		—		—		—		—
Total	$	47,661	$	290,210	$	384,594	$	228,156	$	193,940	$	495,494	$	4,793	$	1,644,848
Commercial AD&C:
Pass	$	174,120	$	373,158	$	244,751	$	110,557	$	47,150	$	—	$	80,645	$	1,030,381
Special Mention	639		1,073		—		—		—		—		—		1,712
Substandard	1,102		455		891		—		13,629		2,843		—		18,920
Doubtful	—		—		—		—		—		—		—		—
Total	$	175,861	$	374,686	$	245,642	$	110,557	$	60,779	$	2,843	$	80,645	$	1,051,013
Commercial Business:
Pass	$	459,815	$	1,059,494	$	179,214	$	129,096	$	77,302	$	71,681	$	396,258	$	2,372,860
Special Mention	—		2,043		8,793		1,063		1,214		845		3,792		17,750
Substandard	225		4,785		3,494		3,338		857		6,019		1,781		20,499
Doubtful	—		—		—		—		—		—		—		—
Total	$	460,040	$	1,066,322	$	191,501	$	133,497	$	79,373	$	78,545	$	401,831	$	2,411,109
Residential Mortgage:
Beacon score:
660-850	$	43,362	$	209,544	$	66,700	$	113,850	$	153,972	$	336,256	$	—	$	923,684
600-659	745		4,962		9,539		8,498		8,044		25,851		—		57,639
540-599	—		1,445		1,181		5,063		1,930		14,187		—		23,806
less than 540	497		2,318		1,545		3,182		1,118		8,757		—		17,417
Total	$	44,604	$	218,269	$	78,965	$	130,593	$	165,064	$	385,051	$	—	$	1,022,546
Residential Construction:
Beacon score:
660-850	$	27,097	$	101,290	$	21,059	$	14,166	$	1,248	$	1,738	$	364	$	166,962
600-659	—		—		2,743		—		—		369		—		3,112
540-599	—		—		—		—		—		—		—		—
less than 540	—		954		—		—		—		—		—		954
Total	$	27,097	$	102,244	$	23,802	$	14,166	$	1,248	$	2,107	$	364	$	171,028
Consumer:
Beacon score:
660-850	$	1,054	$	2,200	$	4,263	$	4,213	$	1,567	$	27,406	$	400,050	$	440,753
600-659	247		265		1,138		484		259		6,092		17,590		26,075
540-599	—		105		564		272		270		3,425		6,938		11,574
less than 540	103		729		151		569		765		3,277		9,908		15,502
Total	$	1,404	$	3,299	$	6,116	$	5,538	$	2,861	$	40,200	$	434,486	$	493,904
Total loans	$	961,411	$	2,937,967	$	1,646,238	$	1,091,611	$	961,954	$	1,896,722	$	950,963	$	10,446,866

22

 The following table provides information about credit quality indicators by the year of origination as of December 31, 2020:

	December 31, 2020
	Term Loans by Origination Year												Revolving
(In thousands)	2020		2019		2018		2017		2016		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	910,426	$	763,214	$	448,406	$	448,698	$	469,077	$	498,384	$	33,531	$	3,571,736
Special Mention	11,044		—		4,879		833		269		27		—		17,052
Substandard	589		4,245		13,649		20,619		673		6,157		—		45,932
Doubtful	—		—		—		—		—		—		—		—
Total	$	922,059	$	767,459	$	466,934	$	470,150	$	470,019	$	504,568	$	33,531	$	3,634,720
Commercial Owner-Occupied R/E:
Pass	$	285,310	$	385,058	$	234,578	$	192,634	$	204,925	$	306,840	$	1,664	$	1,611,009
Special Mention	2,290		—		3,027		4,742		134		4,079		—		14,272
Substandard	1,610		4,335		2,065		465		219		8,009		—		16,703
Doubtful	—		—		—		—		—		232		—		232
Total	$	289,210	$	389,393	$	239,670	$	197,841	$	205,278	$	319,160	$	1,664	$	1,642,216
Commercial AD&C:
Pass	$	485,631	$	261,537	$	149,703	$	50,192	$	89	$	2,357	$	80,764	$	1,030,273
Special Mention	1,711		—		—		—		—		—		—		1,711
Substandard	1,439		891		—		13,816		2,843		—		—		18,989
Doubtful	—		—		—		—		—		—		—		—
Total	$	488,781	$	262,428	$	149,703	$	64,008	$	2,932	$	2,357	$	80,764	$	1,050,973
Commercial Business:
Pass	$	1,244,822	$	208,682	$	138,861	$	86,830	$	34,498	$	81,760	$	433,016	$	2,228,469
Special Mention	1,929		1,382		1,119		708		309		621		4,319		10,387
Substandard	2,914		4,564		3,519		1,631		2,745		3,456		1,829		20,658
Doubtful	106		995		849		36		1,284		1,852		2,912		8,034
Total	$	1,249,771	$	215,623	$	144,348	$	89,205	$	38,836	$	87,689	$	442,076	$	2,267,548
Residential Mortgage:
Beacon score:
660-850	$	229,033	$	74,054	$	138,824	$	172,493	$	129,701	$	251,065	$	—	$	995,170
600-659	4,824		7,706		10,763		11,719		8,173		21,424		—		64,609
540-599	350		1,238		5,219		2,608		4,791		10,167		—		24,373
less than 540	2,702		2,108		3,576		2,150		892		9,599		—		21,027
Total	$	236,909	$	85,106	$	158,382	$	188,970	$	143,557	$	292,255	$	—	$	1,105,179
Residential Construction:
Beacon score:
660-850	$	112,604	$	44,647	$	14,543	$	2,805	$	1,693	$	—	$	172	$	176,464
600-659	1,743		3,189		—		—		—		—		—		4,932
540-599	—		—		—		—		369		—		—		369
less than 540	854		—		—		—		—		—		—		854
Total	$	115,201	$	47,836	$	14,543	$	2,805	$	2,062	$	—	$	172	$	182,619
Consumer:
Beacon score:
660-850	$	2,575	$	4,609	$	5,112	$	2,110	$	2,614	$	24,444	$	417,737	$	459,201
600-659	374		445		334		428		467		5,401		21,052		28,501
540-599	89		1,216		294		339		601		3,926		6,153		12,618
less than 540	751		160		525		785		532		2,826		11,355		16,934
Total	$	3,789	$	6,430	$	6,265	$	3,662	$	4,214	$	36,597	$	456,297	$	517,254
Total loans	$	3,305,720	$	1,774,275	$	1,179,845	$	1,016,641	$	866,898	$	1,242,626	$	1,014,504	$	10,400,509

23

The following table provides the amounts of the restructured loans at the date of restructuring for specific segments of the loan portfolio during the period indicated:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	—	$	—	$	—
Restructured non-accruing	—		—		—		512		—		512
Balance	$	—	$	—	$	—	$	512	$	—	$	512
Individual allowance	$	—	$	—	$	—	$	332	$	—	$	332
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

	For the Year Ended December 31, 2020
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	380	$	549	$	929
Restructured non-accruing	723		930		—		1,951		—		3,604
Balance	$	723	$	930	$	—	$	2,331	$	549	$	4,533
Individual allowance	$	65	$	—	$	—	$	955	$	—	$	1,020
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

During the three months ended March 31, 2021, the Company restructured $0.5 million in loans that were designated as TDRs. TDR loans are subject to periodic credit reviews to determine the necessity and appropriateness of an individual credit loss allowance based on the collectability of the recorded investment in the TDR loan. Loans restructured as TDRs during the three months ended March 31, 2021 had individual reserves of $0.3 million. For the year ended December 31, 2020, the Company restructured $4.5 million in loans. Loans restructured as TDRs during 2020 had individual reserves of $1.0 million at December 31, 2020. During both the three months ended March 31, 2021 and for the year ended December 31, 2020 TDR modifications consisted principally of interest rate concessions, and did not result in the reduction of the recorded investment in the associated loan balances. The commitments to lend additional funds on loans that have been restructured at March 31, 2021 and December 31, 2020 were not significant.

Other Real Estate Owned

Other real estate owned ("OREO") totaled $1.4 million and $1.5 million at March 31, 2021 and December 31, 2020, respectively. There were no consumer mortgage loans secured by residential real estate property for which formal foreclosure proceedings were in process as of March 31, 2021.

24

NOTE 6 – GOODWILL AND OTHER INTANGIBLE ASSETS

The gross carrying amounts and accumulated amortization of intangible assets and goodwill are presented at the dates indicated in the following table:

	March 31, 2021						Weighted Average Remaining Life	December 31, 2020						Weighted Average Remaining Life
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	29,038	$	(9,169)	$	19,869	8.2 years	$	29,038	$	(7,969)	$	21,069	8.4 years
Other identifiable intangibles	13,906		(2,951)		10,955		10.5 years	13,906		(2,454)		11,452		10.7 years
Total amortizing intangible assets	$	42,944	$	(12,120)	$	30,824		$	42,944	$	(10,423)	$	32,521
Goodwill	$	370,223			$	370,223		$	370,223			$	370,223

The amount of goodwill by reportable segment is presented in the following table:

(In thousands)	Community Banking		Insurance		Investment Management		Total
Balances at December 31, 2020	$	331,688	$	6,788	$	31,747	$	370,223
No Activity	—		—		—		—
Balances at March 31, 2021	$	331,688	$	6,788	$	31,747	$	370,223

The following table presents the estimated future amortization expense for amortizing intangible assets within the years ending December 31:

(In thousands)	Amount
Remaining 2021	$	4,903
2022	5,844
2023	5,089
2024	4,333
2025	3,567
Thereafter	7,088
Total amortizing intangible assets	$	30,824

NOTE 7 – DEPOSITS

The following table presents the composition of deposits at the dates indicated:

(In thousands)	March 31, 2021		December 31, 2020
Noninterest-bearing deposits	$	3,770,852	$	3,325,547
Interest-bearing deposits:
Demand	1,395,209		1,292,164
Money market savings	3,371,400		3,339,645
Regular savings	465,125		418,051
Time deposits of less than $100,000	474,684		509,919
Time deposits greater than $100,000 and less than $250,000	774,668		670,717
Time deposits of $250,000 or more	425,814		477,026
Total interest-bearing deposits	6,906,900		6,707,522
Total deposits	$	10,677,752	$	10,033,069

NOTE 8 – BORROWINGS

Subordinated Debt

On November 5, 2019, the Company completed an offering of $175.0 million aggregate principal amount Fixed to Floating Rate Subordinated Notes due in 2029. The notes bear a fixed interest rate of 4.25% per year through November 14, 2024. Beginning November 15, 2024, the interest rate will become a floating rate equal to three month LIBOR, or an alternative benchmark rate as determined pursuant to the terms of the indenture for the notes in the event LIBOR has been discontinued by

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November 15, 2024, plus 262 basis points through the remaining maturity or early redemption date of the notes. The interest will be paid in arrears semi-annually during the fixed rate period and quarterly during the floating rate period. The Company incurred $2.9 million of debt issuance costs which are being amortized through the contractual life of the debt. The entire amount of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

In conjunction with the acquisition of WashingtonFirst Bankshares, Inc. ("WashingtonFirst"), the Company assumed $25.0 million in subordinated debt with an associated purchase premium at acquisition of $2.2 million. The premium is amortized over the contractual life of the obligation. The subordinated debt has a maturity of 10 years, maturing on October 15, 2025, and was non-callable through October 15, 2020. The subordinated debt held a fixed interest rate of 6.00% per annum through October 5, 2020 at which point the rate became variable at the three-month LIBOR plus 457 basis points payable quarterly. As of March 31, 2021, the effective variable rate was 4.81%. Under regulatory capital guidelines subordinated debt begins to phase out of Tier 2 capital qualification, on an annual straight-line basis, when there are five years remaining until the subordinated debt matures. The WashingtonFirst subordinated debt has less than five years but more than four years remaining until it matures, and therefore, as of March 31, 2021, $20.0 million of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

In conjunction with the acquisition of Revere, the Company assumed $31.0 million in subordinated debt with an associated purchase premium at acquisition of $0.2 million, which will be amortized through the call date. The subordinated debt has a 10 year term, maturing on September 30, 2026, is non-callable until September 30, 2021, and currently bears a fixed interest rate of 5.625% per annum, payable semi-annually. Beginning on October 1, 2021, the interest rate resets quarterly to an amount equal to 3 month LIBOR plus 441 basis points. The entire amount of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

The following table provides information on subordinated debt as of the date indicated:

(In thousands)	March 31, 2021		December 31, 2020
Fixed to floating rate sub debt, 4.25%	$	175,000	$	175,000
WashingtonFirst sub debt, 4.81%	25,000		25,000
Revere fixed to floating rate sub debt, 5.625%	31,000		31,000
Total Sub debt	231,000		231,000
Less: Debt held as investments by Sandy Spring	(3,000)		(3,000)
Add: Purchase accounting premium	1,552		1,669
Less: Debt issuance costs	(2,508)		(2,581)
Long-term borrowings	$	227,044	$	227,088

Other Borrowings

At March 31, 2021 and December 31, 2020, the Company had $129.3 million and $153.2 million, respectively, of outstanding retail repurchase agreements. The Company had $60.0 million and $390.0 million of outstanding federal funds purchased at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021, the Company did not have any borrowings outstanding of the $1.3 billion available to borrow under the Paycheck Protection Program Liquidity Facility ("PPPLF"). Amounts borrowed under the PPPLF are required to be repaid as PPP loans are repaid or forgiven.

At March 31, 2021, the Company had an available line of credit with the FHLB under which its borrowings are limited to $3.0 billion based on pledged collateral at prevailing market interest rates, with $100.0 million borrowed against it at March 31, 2021. At December 31, 2020, lines of credit with the FHLB totaled $3.0 billion based on pledged collateral with $379.1 million borrowed against the line. During the three months ended March 31, 2021, the Company repaid $279.0 million of FHLB advances, resulting in a prepayment penalty of $9.1 million, which was recorded to other expense in the Condensed Consolidated Statements of Income.

Under a blanket lien, the Company has pledged qualifying residential mortgage loans amounting to $897.8 million, commercial real estate loans amounting to $2.8 billion, home equity lines of credit (“HELOC”) amounting to $230.5 million, and multifamily loans amounting to $259.4 million at March 31, 2021, as collateral under the borrowing agreement with the FHLB. At December 31, 2020, the Company had pledged collateral of qualifying mortgage loans of $1.0 billion, commercial real estate loans of $2.8 billion, HELOC loans of $226.2 million, and multifamily loans of $237.6 million under the FHLB borrowing agreement. The Company also had secured lines of credit available from the Federal Reserve Bank and correspondent banks of $420.4 million and $276.2 million at March 31, 2021 and December 31, 2020, respectively, collateralized by loans, with no borrowings outstanding at the end of either period. In addition, the Company had unsecured lines of credit with correspondent

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banks of $1.1 billion at both March 31, 2021 and December 31, 2020. Of the unsecured lines available at March 31, 2021 and December 31, 2020, there was $60.0 million and $390.0 million outstanding, respectively.

NOTE 9 – STOCKHOLDERS' EQUITY

In December 2020, the Company's board of directors authorized a stock repurchase plan that permits the repurchase of up to 2,350,000 shares of common stock. No shares of common stock have been repurchased under this plan. Under the previous stock repurchase plan that was approved in 2018 and expired in December 2020, the Company was authorized to repurchase up to 1,800,000 shares. During the first quarter of 2020, the Company repurchased and retired 820,328 common shares for the total cost of $25.7 million. Cumulatively under the previous plan, as of December 31, 2020, the Company repurchased and retired 1,488,519 shares of its common stock at an average price of $33.58 per share for a total cumulative cost of $50.0 million.

NOTE 10 – SHARE BASED COMPENSATION

At March 31, 2021, the Company had two share based compensation plans in existence, the 2005 Omnibus Stock Plan (“Omnibus Stock Plan”) and the 2015 Omnibus Incentive Plan (“Omnibus Incentive Plan”). The Omnibus Stock Plan expired during the second quarter of 2015 but has outstanding options that may still be exercised. The Omnibus Incentive Plan is described in the following paragraph.

The Company’s Omnibus Incentive Plan was approved on May 6, 2015 and provides for the granting of incentive stock options, non-qualifying stock options, stock appreciation rights, restricted stock grants, restricted stock units and performance share units to selected directors and employees on a periodic basis at the discretion of the Company’s Board of Directors. The Omnibus Incentive Plan authorizes the issuance of up to 1,500,000 shares of common stock, of which 797,157 are available for issuance at March 31, 2021, has a term of 10 years, and is administered by a committee of at least three directors appointed by the Board of Directors. Options granted under the plan have an exercise price which may not be less than 100% of the fair market value of the common stock on the date of the grant and must be exercised within seven years or 10 years from the date of grant depending on the terms of the grant agreement. The exercise price of stock options must be paid for in full in cash or shares of common stock, or a combination of both. The board committee has the discretion when making a grant of stock options to impose restrictions on the shares to be purchased upon the exercise of such options. The Company generally issues authorized but previously unissued shares to satisfy option exercises.

The dividend yield is based on estimated future dividend yields. The risk-free rate for periods within the contractual term of the share option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected volatilities are generally based on historical volatilities. The expected term of share options granted is generally derived from historical experience.

Compensation expense is recognized on a straight-line basis over the vesting period of the respective stock option, restricted stock, restricted stock unit grant or performance share units. The Company recognized compensation expense of $0.9 million and $0.8 million, for the three months ended March 31, 2021 and 2020, respectively, related to the awards of stock options, restricted stock grants, restricted stock unit grants and performance share unit grants. There was no unrecognized compensation cost related to stock options as of March 31, 2021. The total of unrecognized compensation cost related to restricted stock awards, restricted stock unit grants, and performance share unit grants was approximately $11.8 million as of March 31, 2021. That cost is expected to be recognized over a weighted average period of approximately 2.70 years.

During the three months ended March 31, 2021, the Company granted 119,329 restricted shares, restricted stock units and performance share units, of which 32,728 units are subject to achievement of certain performance conditions measured over a three-year performance period and 86,601 restricted shares or units are subject to a three year vesting schedule. The Company did not grant any stock options under the Omnibus Incentive Plan during the three months ended March 31, 2021.

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A summary of share option activity for the period indicated is reflected in the following table:

	Number of Common Shares	Weighted Average Exercise Share Price		Weighted Average Contractual Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Balance at January 1, 2021	430,038	$	14.97	3.0 years	$	6,828
Granted	—	$	—
Exercised	(102,365)	$	14.96		$	2,381
Forfeited	—	$	—
Expired	—	$	—
Balance at March 31, 2021	327,673	$	14.98	2.6 years	$	9,045
Exercisable at March 31, 2021	322,908	$	14.63	2.6 years	$	9,017

A summary of the activity for the Company’s restricted stock, restricted stock units and performance share units for the period indicated is presented in the following table:

	Number of Common Shares/Units	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2021	391,683	$	29.50
Granted	119,329	$	40.70
Vested	(13,669)	$	37.64
Forfeited/ cancelled	(3,988)	$	34.86
Non-vested at March 31, 2021	493,355	$	31.94

NOTE 11 – PENSION PLAN

Defined Benefit Pension Plan

The Company has a qualified, noncontributory, defined benefit pension plan (the “Plan”). Benefits after January 1, 2005, are based on the benefit earned as of December 31, 2004, plus benefits earned in future years of service based on the employee’s compensation during each such year. All benefit accruals for employees were frozen as of December 31, 2007 based on past service and thus salary increases and additional years of service after such date no longer affect the defined benefit provided by the Plan, although additional vesting may continue to occur.

The Company's funding policy is to contribute amounts to the Plan sufficient to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended. In addition, the Company contributes additional amounts as it deems appropriate based on benefits attributed to service prior to the date of the Plan freeze. The Plan invests primarily in a diversified portfolio of managed fixed income and equity funds.

The components of net periodic benefit cost for the periods indicated are presented in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Interest cost on projected benefit obligation	$	318	$	359
Expected return on plan assets	(312)		(456)
Recognized net actuarial loss	227		219
Net periodic benefit cost	$	233	$	122

The decision as to whether or not to make a plan contribution and the amount of any such contribution is dependent on a number of factors. Such factors include the investment performance of Plan assets in the current economy and, since the Plan is currently frozen, the remaining investment horizon of the Plan. After consideration of these factors, the Company has not made a contribution during the three months ended March 31, 2021. Management continues to monitor the funding level of the Plan and may make additional contributions as necessary during 2021.

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NOTE 12 – NET INCOME PER COMMON SHARE

The calculation of net income per common share for the periods indicated is presented in the following table:

	Three Months Ended March 31,
(Dollars and amounts in thousands, except per share data)	2021		2020
Net income	$	75,464	$	9,987
Distributed and undistributed earnings allocated to         participating securities	(640)		(68)
Net income attributable to common shareholders	$	74,824	$	9,919
Total weighted average outstanding shares	47,530		34,979
Less: Weighted average participating securities	(411)		(314)
Basic weighted average common shares	47,119		34,665
Dilutive weighted average common stock equivalents	296		78
Diluted weighted average common shares	47,415		34,743
Basic net income per common share	$	1.59	$	0.29
Diluted net income per common share	$	1.58	$	0.28
Anti-dilutive shares	3		9

NOTE 13 – ACCUMULATED OTHER COMPREHENSIVE INCOME/ (LOSS)

Comprehensive income/ (loss) is defined as net income/ (loss) plus transactions and other occurrences that are the result of non-owner changes in equity. For Condensed Consolidated Financial Statements presented for the Company, non-owner changes in equity are comprised of unrealized gains or losses on investments available-for-sale and any minimum pension liability adjustments.

The following table presents the activity in net accumulated other comprehensive income/ (loss) and the components of the activity for the periods indicated:

(In thousands)	Unrealized Gains on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2021	$	28,175	$	(9,470)	$	18,705
Other comprehensive loss before reclassification, net of tax	(21,478)		—		(21,478)
Reclassifications from accumulated other comprehensive income, net of tax	(43)		164		121
Current period change in other comprehensive income, net of tax	(21,521)		164		(21,357)
Balance at March 31, 2021	$	6,654	$	(9,306)	$	(2,652)

(In thousands)	Unrealized Gains/ (Losses) on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2020	$	4,000	$	(8,332)	$	(4,332)
Other comprehensive income before reclassification, net of tax	10,639		—		10,639
Reclassifications from accumulated other comprehensive income, net of tax	(127)		164		37
Current period change in other comprehensive income, net of tax	10,512		164		10,676
Balance at March 31, 2020	$	14,512	$	(8,168)	$	6,344

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The following table provides the information on the reclassification adjustments out of accumulated other comprehensive income/ (loss) for the periods indicated:

	Three Months Ended March 31,
(In thousands)	2021		2020
Unrealized gains on investments available-for-sale:
Affected line item in the Statements of Income:
Investment securities gains	$	58	$	169
Income before taxes	58		169
Tax expense	(15)		(42)
Net income	$	43	$	127
Amortization of defined benefit pension plan items:
Affected line item in the Statements of Income:
Recognized actuarial loss (1)	$	(227)	$	(219)
Loss before taxes	(227)		(219)
Tax benefit	63		55
Net loss	$	(164)	$	(164)

(1)This amount is included in the computation of net periodic benefit cost. See Note 11 for additional information on the pension plan.

NOTE 14 – LEASES

The Company leases real estate properties for its network of bank branches, financial centers and corporate offices. All of the Company’s leases are currently classified as operating. Most lease agreements include one or more options to renew, with renewal terms that can extend the original lease term from one to twenty years or more. The Company does not sublease any of its leased real estate properties.

The following table provides information regarding the Company's leases as of the dates indicated:

	Three Months Ended March 31,
	2021		2020
Components of lease expense:
Operating lease cost (resulting from lease payments)	$	3,151	$	2,730
Supplemental cash flow information related to leases:
Operating cash flows from operating leases	$	3,280	$	2,082
ROU assets obtained in the exchange for lease liabilities due to:
New leases	$	803	$	—
Acquisitions	$	—	$	311
	March 31, 2021		December 31, 2020
Supplemental balance sheet information related to leases:
Operating lease ROU assets	$	64,455	$	65,215
Operating lease liabilities	$	74,219	$	74,982
Other information related to leases:
Weighted average remaining lease term of operating leases	9.4 years		9.5 years
Weighted average discount rate of operating leases	2.97%		3.04%

 

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At March 31, 2021, the maturities of the Company’s operating lease liabilities were as follows:

 

(In thousands)	Amount
Maturity:
Remaining 2021	$	9,346
2022	11,068
2023	11,054
2024	9,251
2025	7,537
Thereafter	38,522
Total undiscounted lease payments	86,778
Less: Present value discount	(12,559)
Lease liability	$	74,219

The Company recognized lease liabilities of $1.9 million and ROU assets of $1.6 million for two operating leases that have not yet commenced operations at March 31, 2021. One lease is expected to commence operations during the second quarter of 2021 and one is expected to commence operations during the fourth quarter of 2021. The associated ROU assets include approximately $0.2 million of tenant allowances for improvements to the spaces. The Company does not have any lease arrangements with any of its related parties as of March 31, 2021.

NOTE 15 – DERIVATIVES

The Company has entered into interest rate swaps (“swaps”) to facilitate customer transactions and meet their financing needs. These swaps qualify as derivatives, but are not designated as hedging instruments. Interest rate swap contracts involve the risk of dealing with counterparties and their ability to meet contractual terms. When the fair value of a derivative instrument contract is positive, this generally indicates that the counterparty or customer owes the Company and results in credit risk to the Company. When the fair value of a derivative instrument contract is negative, the Company owes the customer or counterparty and, therefore, has no credit risk. The notional value of the swaps outstanding was $374.7 million as of March 31, 2021 compared to $320.5 million as of December 31, 2020. The fair values of swap positions net to zero to minimize the potential impact on the Company’s Condensed Consolidated Financial Statements. Fair values of the swaps are carried as both gross assets and gross liabilities in other assets and other liabilities, respectively, in the Condensed Consolidated Statements of Condition. The associated net gains and losses on the swaps are recorded in Other income in the Condensed Consolidated Statements of Income.

NOTE 16 – LITIGATION

The Company and its subsidiaries are subject in the ordinary course of business to various pending or threatened legal proceedings in which claims for monetary damages are asserted. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these legal matters will have a material adverse effect on the Company's financial condition, operating results or liquidity.

NOTE 17 – FAIR VALUE

GAAP provides entities the option to measure eligible financial assets, financial liabilities and commitments at fair value (i.e. the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value under other accounting standards. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a commitment. Subsequent changes in fair value must be recorded in earnings. The Company applies the fair value option on residential mortgage loans held for sale. The fair value option on residential mortgage loans held for sale allows the recognition of gains on the sale of mortgage loans to more accurately reflect the timing and economics of the transaction.

The standard for fair value measurement establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below.

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Basis of Fair Value Measurement:

Level 1- Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2- Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability;

Level 3- Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported by little or no market activity).

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

Changes to interest rates may result in changes in the cash flows due to prepayments or extinguishments. Accordingly, changes to interest rates could result in higher or lower measurements of the fair values.

Assets and Liabilities

Residential mortgage loans held for sale

Residential mortgage loans held for sale are valued based on quotations from the secondary market for similar instruments and are classified as Level 2 in the fair value hierarchy.

Investments available-for-sale

U.S. treasuries and government agencies securities and mortgage-backed and asset-backed securities

Valuations are based on active market data and use of evaluated broker pricing models that vary based by asset class and includes available trade, bid, and other market information. Generally, the methodology includes broker quotes, proprietary models, descriptive terms, and databases coupled with extensive quality control programs. Quality control evaluation processes use available market, credit and deal level information to support the evaluation of the security. Additionally, proprietary models and pricing systems, mathematical tools, actual transacted prices, integration of market developments and experienced evaluators are used to determine the value of a security based on a hierarchy of market information regarding a security or securities with similar characteristics. The Company does not adjust the quoted price for such securities. Such instruments are classified within Level 2 in the fair value hierarchy.

State and municipal securities

The Company primarily uses prices obtained from third-party pricing services to determine the fair value of securities. The Company independently evaluates and corroborates the fair value received from pricing services through various methods and techniques, including references to dealer or other market quotes, by reviewing valuations of comparable instruments, and by comparing the prices realized on the sale of similar securities. Such securities are classified within Level 2 in the fair value hierarchy.

Corporate debt

The fair value of corporate debt is determined by utilizing a discounted cash flow valuation technique employed by a third-party valuation specialist. The third-party specialist uses assumptions related to yield, prepayment speed, conditional default rates and loss severity based on certain factors such as, credit worthiness of the counterparty, prevailing market rates, and analysis of similar securities. The Company evaluates the fair values provided by the third-party specialist for reasonableness and classifies them as level 3 in the fair value hierarchy.

Interest rate swap agreements

Interest rate swap agreements are measured by alternative pricing sources using a discounted cash flow method that incorporates current market interest rates. Based on the complex nature of interest rate swap agreements, the markets these instruments trade in are not as efficient and are less liquid than that of the more mature Level 1 markets. These characteristics classify interest rate swap agreements as Level 2 in the fair value hierarchy.

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Assets Measured at Fair Value on a Recurring Basis

The following tables set forth the Company’s financial assets and liabilities at the dates indicated that were accounted for or disclosed at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	84,930	$	—	$	84,930
Investments available-for-sale:
U.S. treasuries and government agencies	—		48,086		—		48,086
State and municipal	—		366,032		—		366,032
Mortgage-backed and asset-backed	—		1,006,179		—		1,006,179
Corporate debt	—		—		7,583		7,583
Total investments available-for-sale	—		1,420,297		7,583		1,427,880
Interest rate swap agreements	—		6,402		—		6,402
Total assets	$	—	$	1,511,629	$	7,583	$	1,519,212
Liabilities:
Interest rate swap agreements	$	—	$	(6,402)	$	—	$	(6,402)
Total liabilities	$	—	$	(6,402)	$	—	$	(6,402)

 (1) The outstanding principal balance for residential loans held for sale as of March 31, 2021 was $83.3 million.

	December 31, 2020
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	78,294	$	—	$	78,294
Investments available-for-sale:
U.S. treasuries and government agencies	—		43,297		—		43,297
State and municipal	—		390,367		—		390,367
Mortgage-backed and asset-backed	—		904,432		—		904,432
Corporate debt	—		—		9,925		9,925
Total investments available-for-sale	—		1,338,096		9,925		1,348,021
Interest rate swap agreements	—		9,183		—		9,183
Total assets	$	—	$	1,425,573	$	9,925	$	1,435,498
Liabilities:
Interest rate swap agreements	$	—	$	(9,183)	$	—	$	(9,183)
Total liabilities	$	—	$	(9,183)	$	—	$	(9,183)

 (1) The outstanding principal balance for residential loans held for sale as of December 31, 2020 was $75.5 million.

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The following table provides a change in the fair value of assets measured in the Condensed Consolidated Statements of Condition at fair value with significant unobservable inputs (Level 3) on a recurring basis for the period indicated:

	Significant Unobservable Inputs
(In thousands)	(Level 3)
Investments available-for-sale:
Balance at January 1, 2021	$	9,925
Additions of Level 3 assets	—
Sales of Level 3 assets	(2,102)
Total unrealized loss included in other comprehensive income/ (loss)	(240)
Balance at March 31, 2021	$	7,583

Assets Measured at Fair Value on a Nonrecurring Basis

The following tables set forth the Company’s financial assets subject to fair value adjustments on a nonrecurring basis at the date indicated that are valued at the lower of cost or market. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
(In thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Total Losses
Loans (1)	$	—	$	—	$	5,513	$	5,513	$	(5,780)
Other real estate owned	—		—		1,354		1,354		(387)
Total	$	—	$	—	$	6,867	$	6,867	$	(6,167)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

	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		Total Losses
Loans (1)	$	—	$	—	$	13,901	$	13,901	$	(11,326)
Other real estate owned	—		—		1,455		1,455		(286)
Total	$	—	$	—	$	15,356	$	15,356	$	(11,612)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

At March 31, 2021, loans totaling $82.0 million were written down to fair value of $68.9 million as a result of individual credit loss allowances of $13.1 million associated with the collateral dependent loans. Loans totaling $97.7 million were written down to fair value of $86.3 million at December 31, 2020 as a result of individual credit loss allowances of $11.4 million associated with the collateral dependent loans.

Fair value of the collateral dependent loans is measured based on the loan’s observable market price or the fair value of the collateral (less estimated selling costs). Collateral may be real estate and/or business assets such as equipment, inventory and/or accounts receivable. The value of business equipment, inventory and accounts receivable collateral is based on net book value on the business’ financial statements and, if necessary, discounted based on management’s review and analysis. Appraised and reported values may be discounted based on management’s historical experience, changes in market conditions from the time of valuation, and/or management’s expertise and knowledge of the client and client’s business. Collateral dependent loans are reviewed and evaluated on at least a quarterly basis for additional individual reserve and adjusted accordingly, based on the factors identified above.

OREO is adjusted to fair value upon acquisition of the real estate collateral. Subsequently, OREO is carried at the lower of carrying value or fair value. The estimated fair value for OREO included in Level 3 is determined by independent market based appraisals and other available market information, less costs to sell, that may be reduced further based on market expectations

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or an executed sales agreement. If the fair value of the collateral deteriorates subsequent to initial recognition, the Company records the OREO as a nonrecurring Level 3 adjustment. Valuation techniques are consistent with those techniques applied in prior periods.

Fair Value of Financial Instruments

The Company discloses fair value information, based on the exit price notion, of financial instruments that are not measured at fair value in the financial statements. Fair value is the amount at which a financial instrument could be exchanged in a current transaction between willing parties, other than in a forced sale or liquidation, and is best evidenced by a quoted market price, if one exists.

Quoted market prices, where available, are shown as estimates of fair market values. Because no quoted market prices are available for a significant portion of the Company's financial instruments, the fair value of such instruments has been derived based on the amount and timing of future cash flows and estimated discount rates based on observable inputs (“Level 2”) or unobservable inputs (“Level 3”).

Present value techniques used in estimating the fair value of many of the Company's financial instruments are significantly affected by the assumptions used. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate cash settlement of the instrument. Additionally, the accompanying estimates of fair values are only representative of the fair values of the individual financial assets and liabilities, and should not be considered an indication of the fair value of the Company. Management utilizes internal models used in asset liability management to determine the fair values disclosed below.

The carrying amounts and fair values of the Company’s financial instruments at the dates indicated are presented in the following tables:

					Fair Value Measurements
	March 31, 2021				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	228,621	$	228,621	$	228,621	$	—	$	—
Residential mortgage loans held for sale	84,930		84,930		—		84,930		—
Investments available-for-sale	1,427,880		1,427,880		—		1,420,297		7,583
Equity securities	44,847		44,847		44,847		—		—
Loans, net of allowance	10,316,505		10,339,985		—		—		10,339,985
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest receivable	44,559		44,559		44,559		—		—
Bank owned life insurance	127,567		127,567		—		127,567		—
Financial liabilities:
Time deposits	$	1,675,166	$	1,687,100	$	—	$	1,687,100	$	—
Other deposits	9,002,586		9,002,586		9,002,586		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	189,318		189,318		—		189,318		—
Advances from FHLB	100,000		100,327		—		100,327		—
Subordinated debt	227,044		217,942		—		—		217,942
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest payable	4,019		4,019		4,019		—		—

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					Fair Value Measurements
	December 31, 2020				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	297,003	$	297,003	$	297,003	$	—	$	—
Residential mortgage loans held for sale	78,294		78,294		—		78,294		—
Investments available-for-sale	1,348,021		1,348,021		—		1,338,096		9,925
Equity securities	65,760		65,760		65,760		—		—
Loans, net of allowance	10,235,142		10,336,355		—		—		10,336,355
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest receivable	46,431		46,431		46,431		—		—
Bank owned life insurance	126,887		126,887		—		126,887		—
Financial liabilities:
Time deposits	$	1,657,662	$	1,674,112	$	—	$	1,674,112	$	—
Other deposits	8,375,407		8,375,407		8,375,407		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	543,157		543,157		—		543,157		—
Advances from FHLB	379,075		390,593		—		390,593		—
Subordinated debt	227,088		227,512		—		—		227,512
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest payable	3,254		3,254		3,254		—		—

NOTE 18 - SEGMENT REPORTING

Currently, the Company conducts business in three operating segments - Community Banking, Insurance, and Investment Management. Each of the operating segments is a strategic business unit that offers different products and services. The Insurance and Investment Management segments were businesses that were acquired in separate transactions where management of the acquired business was retained. The accounting policies of the segments are the same as those of the Company. However, the segment data reflects inter-segment transactions and balances.

The Community Banking segment is conducted through Sandy Spring Bank and involves delivering a broad range of financial products and services, including various loan and deposit products, to both individuals and businesses. Parent company income and assets are included in the Community Banking segment, as the majority of parent company functions are related to this segment. Major revenue sources include net interest income, gains on sales of mortgage loans, trust income fees, and service charges on deposit accounts. Expenses include personnel, occupancy, marketing, equipment, and other expenses. Non-cash charges associated with amortization of intangibles were $1.2 million and $0.4 million for the three months ended March 31, 2021 and 2020, respectively.

The Insurance segment is conducted through Sandy Spring Insurance, a subsidiary of the Bank. Sandy Spring Insurance operates Sandy Spring Insurance, a general insurance agency located in Annapolis, Maryland, and Neff and Associates, located in Ocean City, Maryland. Major sources of revenue are insurance commissions from commercial lines, personal lines, and medical liability lines. Expenses include personnel, occupancy, support charges, and other expenses. Non-cash charges associated with amortization of intangibles were immaterial for the three months ended March 31, 2021 and 2020.

The Investment Management segment is conducted through West Financial and RPJ, subsidiaries of the Bank. These asset management and financial planning firms, located in McLean, Virginia and Falls Church, Virginia, respectively, provide comprehensive investment management and financial planning to individuals, families, small businesses and associations, including cash flow analysis, investment review, tax planning, retirement planning, insurance analysis and estate planning. West Financial and RPJ had approximately $3.6 billion in combined assets under management as of March 31, 2021. Major revenue sources include non-interest income earned on the above services. Expenses include personnel, occupancy, support charges, and other expenses. Non-cash charges associated with amortization of intangibles for the three months ended March 31, 2021 and 2020 were $0.5 million and $0.2 million, respectively.

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Information for the operating segments and reconciliation of the information to the Condensed Consolidated Financial Statements for the periods indicated are presented in the following tables:

	Three Months Ended March 31, 2021
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	114,261	$	1	$	2	$	(3)	$	114,261
Interest expense	9,664		—		—		(3)		9,661
Provision for credit losses	(34,708)		—		—		—		(34,708)
Non-interest income	21,725		2,151		5,207		(217)		28,866
Non-interest expense	63,695		1,487		3,208		(217)		68,173
Income before income taxes	97,335		665		2,001		—		100,001
Income tax expense	23,838		183		516		—		24,537
Net income	$	73,497	$	482	$	1,485	$	—	$	75,464
Assets	$	12,878,311	$	11,504	$	56,688	$	(73,137)	$	12,873,366

	Three Months Ended March 31, 2020
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	83,857	$	3	$	2	$	(4)	$	83,858
Interest expense	19,528		—		—		(4)		19,524
Provision for credit losses	24,469		—		—		—		24,469
Non-interest income	13,977		2,129		2,266		(204)		18,168
Non-interest expense	44,655		1,464		1,831		(204)		47,746
Income before income taxes	9,182		668		437		—		10,287
Income tax expense	1		185		114		—		300
Net income	$	9,181	$	483	$	323	$	—	$	9,987
Assets	$	8,917,849	$	10,887	$	55,657	$	(54,791)	$	8,929,602

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Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

This report, as well as other periodic reports filed with the Securities and Exchange Commission, and written or oral communications made from time to time by or on behalf of Sandy Spring Bancorp, Inc. and its subsidiaries (the “Company”), may contain statements relating to future events or future results of the Company that are considered “forward-looking statements” under the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by the use of words such as “believe,” “expect,” “anticipate,” “plan,” “estimate,” “intend” and “potential,” or words of similar meaning, or future or conditional verbs such as “should,” “could,” or “may.” Forward-looking statements include statements of our goals, intentions and expectations; statements regarding our business plans, prospects, growth and operating strategies; statements regarding the quality of our loan and investment portfolios; and estimates of our risks and future costs and benefits.

Forward-looking statements reflect our expectation or prediction of future conditions, events or results based on information currently available. These forward-looking statements are subject to significant risks and uncertainties that may cause actual results to differ materially from those in such statements. These principal risks and uncertainties include, but are not limited to, the risks identified in Item 1A of the Company’s 2020 Annual Report on Form 10-K, Item 1A of Part II of this report and the following:

•risks, uncertainties and other factors relating to the COVID-19 pandemic, including the length of time that the pandemic continues, the effectiveness of vaccination programs, the imposition of any shelter in place orders and restrictions on travel; the effect of the pandemic on the general economy and on the businesses of our borrowers and their ability to make payments on their obligations; the remedial actions and stimulus measures adopted by federal, state and local governments, and the inability of employees to work due to illness, quarantine, or government mandates;

•general business and economic conditions nationally or in the markets that the Company serves could adversely affect, among other things, real estate prices, unemployment levels, the ability of businesses to remain viable and consumer and business confidence, which could lead to decreases in the demand for loans, deposits and other financial services that we provide and increases in loan delinquencies and defaults;

•changes or volatility in the capital markets and interest rates may adversely impact the value of securities, loans, deposits and other financial instruments and the interest rate sensitivity of our balance sheet as well as our liquidity;

•our liquidity requirements could be adversely affected by changes in our assets and liabilities;

•our investment securities portfolio is subject to credit risk, market risk, and liquidity risk as well as changes in the estimates we use to value certain of the securities in our portfolio;

•the effect of legislative or regulatory developments including changes in laws concerning taxes, banking, securities, insurance and other aspects of the financial services industry;

•acquisition risks, including potential deposit attrition, higher than expected costs, customer loss, business disruption and the inability to realize benefits and costs savings from, and limit any unexpected liabilities associated with, any business combinations;

•competitive factors among financial services companies, including product and pricing pressures and our ability to attract, develop and retain qualified banking professionals;

•the effect of changes in accounting policies and practices, as may be adopted by the Financial Accounting Standards Board, the Securities and Exchange Commission, the Public Company Accounting Oversight Board and other regulatory agencies; and

•the effect of fiscal and governmental policies of the United States federal government.

Forward-looking statements speak only as of the date of this report. The Company does not undertake to update forward-looking statements to reflect circumstances or events that occur after the date of this report or to reflect the occurrence of unanticipated events except as required by federal securities laws.

The Company

Sandy Spring Bancorp, Inc. is the bank holding company for Sandy Spring Bank (the “Bank”). The Company is a community banking organization that focuses its lending and other services on businesses and consumers in the local market area. At March 31, 2021, the Company had $12.9 billion in assets, a $0.1 billion increase from total assets at December 31, 2020. The Company is registered as a bank holding company pursuant to the Bank Holding Company Act of 1956, as amended and is subject to supervision and regulation by the Board of Governors of the Federal Reserve System (the “Federal Reserve”).

Sandy Spring Bank is an independent and community-oriented bank that offers a broad range of commercial banking, retail banking, mortgage and trust services throughout central Maryland, Northern Virginia, and the greater Washington, D.C. market. Through its subsidiaries, Sandy Spring Insurance Corporation ("SSIC"), West Financial Services, Inc. ("West") and SSB

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Wealth Management, Inc. (d/b/a Rembert Pendleton and Jackson, "RPJ”), the Bank also offers a variety of comprehensive insurance and wealth management services. The Bank is a state chartered bank subject to supervision and regulation by the Federal Reserve and the State of Maryland. Deposit accounts of the Bank are insured by the Deposit Insurance Fund administered by the Federal Deposit Insurance Corporation (the “FDIC”) to the maximum amount permitted by law. The Bank is a member of the Federal Reserve System and is an Equal Housing Lender. The Company, the Bank, and its other subsidiaries are Affirmative Action/Equal Opportunity Employers.  

On April 1, 2020 (“Acquisition Date”), the Company completed the acquisition of Revere Bank ("Revere"), headquartered in Rockville, Maryland, resulting in the addition of more than $2.8 billion in assets. At the Acquisition Date, Revere had loans of $2.5 billion and deposits of $2.3 billion. The all-stock transaction resulted in the issuance of 12.8 million common shares and with total consideration valued at approximately $293 million. In addition, on February 1, 2020 the Company acquired RPJ, a wealth advisory firm located in Falls Church, Virginia with approximately $1.5 billion in assets under management on the date the acquisition closed. The results of operations from the Revere and RPJ acquisitions have been included in the consolidated results of operations from the date of the acquisitions. As a result of the growth, the statement of condition, interest and non-interest income and expense increased from the prior year’s quarter.

Current State and Response

The Company's business, financial condition, and results of operations have been affected by the outbreak of the novel coronavirus ("COVID-19" or “pandemic”), which may have adverse effects on its future performance. Both globally and within the United States, the pandemic has resulted in negative impacts and a significant disruption to economic and commercial activity and financial markets. Area jurisdictions continue to monitor and modify their respective pandemic guidelines on a periodic basis. Businesses continue to observe and modify their activities and behaviors to remain in compliance with the jurisdictional directives while concurrently providing consumers with goods and services. These directives have resulted in business and operational disruptions, including business closures, operational reorganizations, supply chain disruptions, and layoffs and furloughs. Certain actions taken by U.S. or other governmental authorities, including the Federal Reserve, that are intended to ameliorate the macroeconomic effects of COVID-19 may cause additional harm to our business. Decreased short-term interest rates, such as those announced by the Federal Reserve during the prior year has resulted in a negative impact on our results, as we have certain assets and liabilities that are sensitive to changes in interest rates. Management continually monitors developments, evaluates strategic and tactical initiatives and solutions and allocates the necessary resources to mitigate the negative impact of this significant market disruption caused by the pandemic. For a description of the potential impacts of COVID-19 on the Company, see “Item 1A-Risk Factors” in the Company’s 2020 Annual Report on Form 10-K.

The Company implemented business continuity plans and continues to provide financial services to clients. In response to COVID-19, the Company implemented numerous actions to address the health and safety of employees and clients and to assist clients that have been impacted by the pandemic. A substantial majority of non-branch employees continue to work remotely and clients are served at branches primarily through drive-thru facilities and limited lobby access. As area jurisdictions begin to relax their restrictions, the Company is cautiously executing the first phase of its return to work plan and is preparing to move to the next phase in which it will provide open access to branch lobbies and increase occupancy at its offices..

Current Quarter Financial Overview

The Company recorded net income of $75.5 million ($1.58 per diluted common share) in the current quarter compared to net income of $10.0 million ($0.28 per diluted common share) for the first quarter of 2020 and net income of $56.7 million ($1.19 per diluted common share) for the fourth quarter of 2020.

Core earnings for the current quarter, which exclude the impact of the provision for credit losses, the provision on unfunded loan commitments, merger and acquisition expense, loss on FHLB redemptions, amortization of intangibles and investment securities gains, each on an after-tax basis, were $56.9 million ($1.20 per diluted common share), compared to $29.6 million ($0.85 per diluted common share) for the quarter ended March 31, 2020 and $55.7 million ($1.18 per diluted common share) for the quarter ended December 31, 2020.

The current quarter's provision for credit losses was a credit of $34.7 million as compared to a credit of $4.5 million for the fourth quarter of 2020. The current quarter's large credit for the provision for credit losses compared to the prior quarter is principally the result of a decline in the forecasted unemployment rate and, to a lesser degree, improvements in other forecasted macroeconomic indicators.

The first quarter’s results reflect the following events:

•Total assets at March 31, 2021, grew 44% to $12.9 billion compared to March 31, 2020, primarily due to the Revere acquisition in the second quarter of 2020. During this period, the participation in the Paycheck Protection Program

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("PPP" or "PPP Program") resulted in the addition of $1.3 billion in outstanding commercial business loans. As a result of these strategic initiatives, loans and deposits grew by 55% and 62%, respectively.

•The net interest margin was 3.56% for the first quarter of 2021, compared to 3.29% for the same quarter of 2020, and 3.38% for the fourth quarter of 2020. Excluding the impact of the amortization of the fair value marks derived from acquisitions, the current quarter’s net interest margin would have been 3.46%, compared to 3.27% for first quarter of 2020, and 3.31% for the fourth quarter of 2020.

•The provision for credit losses was a credit of $34.7 million for the current quarter compared to the prior quarter’s credit to the provision of $4.5 million. The significant credit to the provision was primarily the result of the improvement in the forecasted unemployment rate.

•Non-interest income for the current quarter increased by 59% or $10.7 million compared to the prior year quarter, as a result of a 235% increase in income from mortgage banking activities and 25% growth in wealth management income as a result of the acquisition of RPJ in the first quarter of the prior year.

•Non-interest expense increased $20.4 million or 43% for the first quarter of 2021, compared to the prior year quarter. This increase was driven primarily by two factors: the impact of the acquisitions of Revere and RPJ, which increased compensation and operational costs, in addition to intangible asset amortization, and $9.1 million in prepayment penalties incurred on the early redemption of FHLB advances in the first quarter of the current year.

•Return on average assets (“ROA”) for the quarter ended March 31, 2021 was 2.39% and return on average tangible common equity (“ROTCE”) was 28.47%. This compares to ROA of 1.78% and ROTCE of 21.89% for the prior quarter. Non-GAAP core ROA for the current quarter was 1.80% compared to 1.37% for the prior year quarter. The non-GAAP core ROTCE was 21.48% for the quarter ended March 31, 2021 compared to 15.85% for the first quarter of 2020.

•GAAP efficiency ratio for the first quarter of 2021 decreased to 51.08% compared to 57.87% for the first quarter of the prior year. The non-GAAP efficiency ratio for the first quarter of 2021 was 42.65% compared to 54.76% for the first quarter of the prior year and 45.09% for the fourth quarter of 2020.

•During the quarter, the dividend was increased to $0.32 from $0.30 per common share.

Summary of First Quarter Results

Balance Sheet and Credit Quality

Total assets at March 31, 2021 were $12.9 billion, as compared to $8.9 billion at March 31, 2020, primarily as a result of the acquisition of Revere during the second quarter of 2020 and, to a lesser degree, participation in the PPP Program. During this period, total loans grew by 55% to $10.4 billion at March 31, 2021, compared to $6.7 billion at March 31, 2020. Excluding PPP loans, total loans grew 36% to $9.1 billion at March 31, 2021. Commercial loans, excluding PPP loans, grew 49% or $2.5 billion. The residential mortgage loan portfolio decreased 8% year-over-year as the significant majority of loan originations during the past year were sold in the secondary market. Consumer loan growth during the year was 9%, primarily the result of the acquisition. Deposit growth was 62% during the past twelve months, as noninterest-bearing deposits experienced growth of 94% and interest-bearing deposits grew 48%. This growth was driven mainly by the Revere acquisition and, to a lesser extent, the PPP program.

During the current quarter the Company originated $446.0 million in first and second draw loans under the reinitiated PPP program. During the quarter, the Company recognized $7.9 million of fees into interest income from the total fees received under the program. In addition to processing applications for new loans under the reinitiated PPP program, the Company began accepting digital PPP forgiveness applications. As of April 22, 2021, $282.0 million of the Company's PPP loans have been granted forgiveness by the SBA.

During the first quarter of 2021, total loans, excluding PPP, declined $194.7 million as compared to December 31, 2020. This decline was a reflection of the high level of early pay-offs coupled with lower seasonally affected loan production. It is believed that this trend is temporary, and that due to the current credit resiliency of the portfolio and significant availability of liquidity, the Company is well positioned for future loan growth.

At the end of the current quarter, 176 loans with an aggregate balance of $233.0 million remain in deferral status. Currently, the vast majority of loans that had been granted modifications/deferrals due to pandemic related financial stress have returned to

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their original payment plans. Non-accrual loans comprised $56.7 million of loans that remain in deferral status at current quarter end.

At March 31, 2021, stockholders’ equity grew 35% to $1.5 billion compared to March 31, 2020 as a result of the equity issuance associated with the Revere acquisition in addition to net earnings over the preceding twelve months. As a result, tangible common equity increased to $1.1 billion or 8.90% of tangible assets at March 31, 2021, compared to $726.8 or 8.51% at March 31, 2020. The year-over-year change in tangible common equity includes the effects of the increase in tangible assets and goodwill associated with the Revere acquisition. Excluding the impact of the PPP program from tangible assets at March 31, 2021, the tangible common equity ratio would be 9.94%. At March 31, 2021, the Company had a total risk-based capital ratio of 15.49%, a common equity Tier 1 risk-based capital ratio of 12.09%, a Tier 1 risk-based capital ratio of 12.09% and a Tier 1 leverage ratio of 9.14%.

The level of non-performing loans to total loans increased to 0.94% at March 31, 2021, compared to 0.80% at March 31, 2020, and decreased from 1.11% at December 31, 2020. At March 31, 2021, non-performing loans totaled $98.7 million, compared to $54.0 million at March 31, 2020, and $115.5 million at December 31, 2020. During the current quarter, the Company realized the full settlement of $16.0 million in non-accrual loans and recognized $1.3 million in interest income. Non-performing loans include non-accrual loans, accruing loans 90 days or more past due and restructured loans. Loans placed on non-accrual during the current quarter amounted to $0.4 million compared to $2.4 million for the prior year quarter and $54.7 million in the fourth quarter of 2020. Loans in non-accrual status at quarter end included a small number of large borrowing relationships within the hospitality sector with an aggregate balance of $43.8 million. These large relationships are collateral dependent and required no individual reserves due to sufficient values of the underlying collateral.

The Company recorded net charge-offs of $0.3 million for the first quarter of 2021 as compared to net charge-offs of $0.5 million for both the first quarter of 2020 and fourth quarter of 2020.

The allowance for credit losses was $130.4 million or 1.25% of outstanding loans and 132% of non-performing loans at March 31, 2021, compared to $165.4 million or 1.59% of outstanding loans and 143% of non-performing loans at December 31, 2020. Excluding PPP loans, the allowance for credit losses to outstanding loans was 1.43% and 1.77%, at March 31, 2021 and December 31, 2020, respectively.

Quarterly Results of Operations

Net interest income for the first quarter of 2021 increased 63% compared to the first quarter of 2020, driven by the Revere acquisition. The PPP program contributed a net of $10.9 million to net interest income for the quarter, of which $7.9 million represented PPP fees. The net interest margin for the first quarter of 2021 was 3.56% as compared to 3.29% for the first quarter of 2020. Excluding the net $2.9 million impact of the amortization of the fair value marks derived from acquisitions, the net interest margin for the current quarter would have been 3.46% compared to the adjusted net interest margin of 3.27% for the first quarter of the prior year.

The provision for credit losses was a credit of $34.7 million for the first quarter of 2021, compared to a provision of $24.5 million for the first quarter of 2020 and a credit of $4.5 million for the fourth quarter of 2020. The significant credit in the current quarter’s provision for credit losses, compared to the prior quarter's credit to the provision, reflects the impact of the improvement in the most recent forecasted unemployment rate for the metropolitan statistical area of the Bank. Other economic metrics and factors also contributed to growth in the current quarter's credit to the provision, which were partially offset by qualitative factors applied in the determination of the allowance.

Non-interest income increased $10.7 or 59% during the current quarter compared to the same quarter of the prior year. Income from mortgage banking activities increased by $7.1 million during the current quarter compared to the prior year quarter. Mortgage banking income declined to $10.2 million for the three months ended March 31, 2021 compared to $14.5 million for the previous quarter as a result of decreasing margins on the volume of mortgages sold during the quarter. Additionally, wealth management income increased $1.8 million as a result of the first quarter 2020 acquisition of RPJ. During the quarter, other non-interest income increased $2.1 million compared to the same quarter of last year due to income from loan pay-off activity. The growth of these three categories of non-interest income more than compensated for the decline in service fee income from the prior year quarter.

Non-interest expense grew 43% or $20.4 million compared to the prior year quarter. The current quarter's results contained prepayment penalties of $9.1 million from the early redemption of $279.0 million of FHLB advances with an average rate of 2.63%. Excluding the impact of the prepayment penalties and merger and acquisition expense, non-interest expense grew 27% year-over-year primarily as a result of the compensation and operational costs relating to the 2020 Revere and RPJ acquisitions, in addition to the increase in FDIC insurance and the amortization of intangible assets.

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The GAAP efficiency ratio for the first quarter of 2021 improved to 51.08% compared to 57.87% for the first quarter of 2020 as revenue increased at a faster rate than non-interest expense. The erosion in the current quarter's ratio compared to the previous quarter's ratio of 46.69% was due to the increase in the current quarter in non-interest expense as a result of the loss on the redemption of the FHLB advances. The non-GAAP efficiency ratio was 42.65% for the current quarter as compared to 54.76% for the first quarter of 2020 and 45.09% for the fourth quarter of 2020. The improvement in the efficiency ratio from the first quarter of last year and the prior quarter to the current year quarter was the result of the rate of growth in non-GAAP revenue outpacing the non-GAAP non-interest expense growth rate.

Results of Operations

For the Three Months Ended March 31, 2021 Compared to the Three Months Ended March 31, 2020

For the first quarter of 2021 the Company realized net income of $75.5 million ($1.58 per diluted common share) compared to net income of $10.0 million ($0.28 per diluted common share) for the first quarter of 2020 and net income of $56.7 million ($1.19 per diluted common share) for the previous quarter.

The current year's quarterly results compared to the prior year quarter includes the impact of the second quarter 2020 acquisition of Revere. In addition, the current quarter included a credit to the provision for credit losses of $34.7 million as compared to the prior year's quarter. On a linked quarter basis, the provision for credit losses was a credit of $4.5 million. The significant credit for the provision for credit losses in the current quarter, compared to the prior quarter, was principally driven by the decline in the forecasted unemployment rate and, to a lesser degree, improvements in other forecasted macroeconomic indicators.

For the current quarter, core earnings, which excludes the impact of the provision for credit losses, provision on unfunded loan commitments, merger and acquisition expense, loss on FHLB redemptions, amortization of intangibles and investment securities gains, each on an after-tax basis, were $56.9 million ($1.20 per diluted common share), compared to $29.6 million ($0.85 per diluted common share) for the quarter ended March 31, 2020 and $55.7 million ($1.18 per diluted common share) for the quarter ended December 31, 2020.

Net Interest Income

Net interest income for the first quarter of 2021 increased 63% to $104.6 million compared to $64.3 million for the first quarter of 2020. On a tax-equivalent basis, net interest income for the first quarter of 2021 was $105.6 million compared to $65.4 million for the first quarter of 2020. The increase in net interest income was primarily the result of the Revere acquisition. Additionally, the PPP program generated pre-tax interest income of $10.9 million during the current quarter, of which $7.9 million represented recognized PPP fees. Overall, year-to-date, interest income increased 36% while interest expense decreased 51% as compared to the same period in the prior year.

The net interest margin for the current quarter was 3.56%, compared to the net interest margin for the first quarter of 2020 of 3.29%. Compared to the prior year’s quarter, the yield on $12.0 billion of average interest-earning assets was 3.88% compared to 4.27% on average interest-earning assets of $8.0 billion for the prior year quarter. The average rate paid on interest-bearing liabilities for the current quarter declined to 0.50% compared to 1.40% for the prior year quarter. Excluding the $2.9 million impact from the amortization of the fair value marks derived from acquisitions, the net interest margin would have been 3.46% compared to the adjusted net interest margin of 3.27% for the first quarter of 2020.

Average interest-earning assets increased by 50% and average interest-bearing liabilities increased by 38% in the first quarter of 2021 compared to the first quarter of 2020. Average noninterest-bearing deposits increased 89% in the first quarter of 2021 as compared to the same quarter of the prior year. The percentage of average noninterest-bearing deposits to total average deposits increased to 33% in the current quarter compared to 28% in the first quarter of 2020. The primary cause of these increases was the acquisition of Revere during the second quarter of 2020 and, to a lesser extent, the PPP program and its impact on commercial loans and noninterest-bearing deposits. At March 31, 2021 and 2020, average total loans comprised 86% and 84% of average interest-earning assets with an average yield of 4.22% and 4.57%, respectively. The average yield on investment securities decreased to 1.92% for the quarter ended March 31, 2021, from 2.73% at March 31, 2020. The decline in the overall average yield on interest-earning assets from 4.27% at March 31, 2020 to 3.88% at March 31, 2021, was driven by downward movement of market interest rates. The impact of the decline in the yield on average interest-earning assets was partially mitigated by the 90 basis point decline in the average rate paid on average interest-bearing liabilities, as the rate paid decreased from 1.40% for the first quarter of 2020 to 0.50% for the first quarter of 2021. During this period, the 89 basis point decline in the average rate paid on interest-bearing deposits was the result of the reduction in rates paid on money market savings and time deposits. While the general market rate decline affected deposit rates, the average rate paid on time deposits declined further as

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a result of amortization of the fair value mark associated with the Revere acquisition. Excluding the amortization of all the fair value marks, the average rate paid on total average interest-bearing liabilities was 0.59%.

Consolidated Average Balances, Yields and Rates
	Three Months Ended March 31,
	2021						2020
(Dollars in thousands and tax-equivalent)	Average Balances		Interest (1)		Annualized Average Yield/Rate		Average Balances		Interest (1)		Annualized Average Yield/Rate
Assets:
Commercial investor real estate loans	$	3,634,174	$	38,354	4.28	%	$	2,202,461	$	25,265	4.61	%
Commercial owner-occupied real estate loans	1,638,885		18,680		4.62		1,285,257		15,206		4.76
Commercial AD&C loans	1,049,597		10,396		4.02		659,494		8,329		5.08
Commercial business loans	2,291,097		24,794		4.39		819,133		10,177		5.00
Total commercial loans	8,613,753		92,224		4.34		4,966,345		58,977		4.78
Residential mortgage loans	1,066,714		9,544		3.58		1,139,786		10,741		3.77
Residential construction loans	179,925		1,606		3.62		145,266		1,561		4.32
Consumer loans	496,578		4,545		3.71		465,314		5,156		4.46
Total residential and consumer loans	1,743,217		15,695		3.62		1,750,366		17,458		4.01
Total loans (2)	10,356,970		107,919		4.22		6,716,711		76,435		4.57
Loans held for sale	82,263		537		2.61		35,030		291		3.32
Taxable securities	915,625		3,899		1.70		972,609		6,322		2.60
Tax-advantaged securities	491,830		2,840		2.31		206,475		1,737		3.37
Total investment securities (3)	1,407,455		6,739		1.92		1,179,084		8,059		2.73
Interest-bearing deposits with banks	182,095		46		0.10		63,533		180		1.14
Federal funds sold	641		—		0.09		260		1		1.23
Total interest-earning assets	12,029,424		115,241		3.88		7,994,618		84,966		4.27
Less: allowance for credit losses	(163,229)						(61,962)
Cash and due from banks	106,259						69,618
Premises and equipment, net	56,369						58,346
Other assets	772,716						638,722
Total assets	$	12,801,539					$	8,699,342
Liabilities and Stockholders' Equity:
Interest-bearing demand deposits	$	1,365,652	236		0.07	%	$	840,415	697		0.33	%
Regular savings deposits	444,296		56		0.05		331,119		73		0.09
Money market savings deposits	3,410,589		1,463		0.17		1,848,290		4,650		1.01
Time deposits	1,728,543		3,075		0.72		1,616,643		8,098		2.01
Total interest-bearing deposits	6,949,080		4,830		0.28		4,636,467		13,518		1.17
Other borrowings	189,851		53		0.11		236,806		580		0.99
Advances from FHLB	376,984		2,276		2.45		531,989		3,145		2.38
Subordinated debentures	227,072		2,502		4.41		206,794		2,281		4.41
Total borrowings	793,907		4,831		2.47		975,589		6,006		2.48
Total interest-bearing liabilities	7,742,987		9,661		0.50		5,612,056		19,524		1.40
Noninterest-bearing demand deposits	3,394,110						1,797,227
Other liabilities	187,292						160,008
Stockholders' equity	1,477,150						1,130,051
Total liabilities and stockholders' equity	$	12,801,539					$	8,699,342
Tax-equivalent net interest income and spread			105,580		3.38	%			65,442		2.87	%
Less: tax-equivalent adjustment			980						1,108
Net interest income			$	104,600					$	64,334
Interest income/earning assets					3.88	%					4.27	%
Interest expense/earning assets					0.32	%					0.98
Net interest margin					3.56	%					3.29	%

(1)Tax-equivalent income has been adjusted using the combined marginal federal and state rate of 25.50% and 25.45% for 2021 and 2020, respectively. The annualized taxable-equivalent adjustments utilized in the above table to compute yields aggregated to $1.0 million and $1.1 million in 2021 and 2020, respectively.

(2)Non-accrual loans are included in the average balances.

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(3)Investments available-for-sale are presented at amortized cost.

Effect of Volume and Rate Changes on Tax-Equivalent Net Interest Income

The following table analyzes the reasons for the changes from year-to-year in the principal elements that comprise tax-equivalent net interest income:

	2021 vs. 2020						2020 vs. 2019
	Increase Or (Decrease)		Due to Change In Average*:				Increase Or (Decrease)		Due to Change In Average*:
(Dollars in thousands and tax equivalent)			Volume		Rate				Volume		Rate
Interest income from earning assets:
Commercial investor real estate loans	$	13,089	$	15,019	$	(1,930)	$	(464)	$	3,051	$	(3,515)
Commercial owner-occupied real estate loans	3,474		3,940		(466)		820		1,012		(192)
Commercial AD&C loans	2,067		4,076		(2,009)		(1,551)		(228)		(1,323)
Commercial business loans	14,617		15,995		(1,378)		(631)		552		(1,183)
Residential mortgage loans	(1,197)		(670)		(527)		(1,047)		(863)		(184)
Residential construction loans	45		325		(280)		(402)		(459)		57
Consumer loans	(611)		317		(928)		(1,174)		(567)		(607)
Loans held for sale	246		318		(72)		99		151		(52)
Taxable securities	(2,423)		(351)		(2,072)		346		1,419		(1,073)
Tax-advantaged securities	1,103		1,778		(675)		(436)		(308)		(128)
Interest-bearing deposits with banks	(134)		129		(263)		(14)		121		(135)
Federal funds sold	(1)		—		(1)		(4)		(2)		(2)
Total tax-equivalent interest income	30,275		40,876		(10,601)		(4,458)		3,879		(8,337)
Interest expense on funding of earning assets:
Interest-bearing demand deposits	(461)		273		(734)		397		68		329
Regular savings deposits	(17)		21		(38)		(20)		—		(20)
Money market savings deposits	(3,187)		2,253		(5,440)		(1,657)		677		(2,334)
Time deposits	(5,023)		512		(5,535)		318		318		—
Other borrowings	(527)		(99)		(428)		182		164		18
Advances from FHLB	(869)		(956)		87		(2,919)		(2,340)		(579)
Subordinated debentures	221		221		—		1,790		1,880		(90)
Total interest expense	(9,863)		2,225		(12,088)		(1,909)		767		(2,676)
Tax-equivalent net interest income	$	40,138	$	38,651	$	1,487	$	(2,549)	$	3,112	$	(5,661)

*Variances that are the combined effect of volume and rate, but cannot be separately identified, are allocated to the volume and rate variances based on their respective relative amounts.

Interest Income

The Company's total tax-equivalent interest income increased 36% for the first quarter of 2021 compared to the prior year quarter. The previous table reflects the growth in average interest-earning assets over the prior year quarter as average total loans grew 54% and average investment securities grew 19%. Increases occurred in most categories of interest-earning assets from the Revere acquisition and, to a lesser extent, the PPP program. Mortgage loans decreased as a result of sales in the secondary market of the majority of the new money and refinance loan originations during the past twelve months.

The average yield on interest-earning assets declined to 3.88% for the current quarter compared to 4.27% for the same period of the prior year. The average yields on loans and investment securities for the current quarter decreased by 35 and 81 basis points, respectively, compared to the prior year quarter as market rates declined during the period. The amortization of the fair value premiums positively impacted the current quarter’s yield on average loans by five basis points while the impact of PPP loans provided a negative impact of six basis points. The decrease in the yield on investments was driven by the decline in yields during the year as proceeds from maturities and calls were reinvested in securities at the lower available rates. The combined decrease in the yield on loans and the investment portfolio resulted in the 39 basis point decline in the yield on interest-earning assets from period to period. Excluding the PPP program and the amortization of fair value marks, the yield on interest-earning assets would have been 3.84%.

Interest Expense

Interest expense decreased 51% in the first quarter of 2021 compared to the first quarter of 2020. The decrease from period to period was attributable to two factors: the decline in general market rates that occurred over the previous twelve months and the

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impact of the amortization of the acquisition fair value marks. The combined impact of the general decline in market rates and amortization of fair value marks resulted in the 0.28% average rate paid on interest-bearing deposits for the current quarter compared to 1.17% for the same period of the prior year. The main driver in the 89 basis point decline in the average rate paid on interest-bearing deposits in the current quarter versus in the prior year quarter were the notable decreases in the rates paid on money market savings and time deposits. Contributing to the decline in the average rate paid on deposits was the $1.5 million in amortization of fair value marks on time deposits for the current quarter. Excluding the amortization of the fair value marks, the average rate paid on interest-bearing deposits would have been 0.37%.

As a result of the general decline in market interest rates, the average rate on interest-bearing liabilities for the current quarter, driven by the decline in deposit rates, declined to 0.50% from 1.40% as compared to the prior year quarter. After excluding the fair value amortization, the average rate paid on interest-bearing liabilities would have been 0.59%. The average rate paid also benefited from the growth in average noninterest-bearing deposits that increased to 33% of average deposits in the current quarter compared to 28% in the prior year’s first quarter.

Non-interest Income

Non-interest income amounts and trends are presented in the following table for the periods indicated:

	Three Months Ended March 31,				2021/2020		2021/2020
(Dollars in thousands)	2021		2020		$ Change		% Change
Securities gains	$	58	$	169	$	(111)	(65.7	%)
Service charges on deposit accounts	1,852		2,253		(401)		(17.8)
Mortgage banking activities	10,169		3,033		7,136		235.3
Wealth management income	8,730		6,966		1,764		25.3
Insurance agency commissions	2,153		2,129		24		1.1
Income from bank owned life insurance	680		645		35		5.4
Bank card fees	1,518		1,320		198		15.0
Other income	3,706		1,653		2,053		124.2
Total non-interest income	$	28,866	$	18,168	$	10,698	58.9

Total non-interest income increased 59% to $28.9 million for the first quarter of 2021 compared to $18.2 million for the first quarter of 2020. This $10.7 million increase was driven predominantly by a $7.1 million increase in income from mortgage banking activities, a $1.8 million increase in wealth management income and the $2.1 million increase in other non-interest income. The growth in these categories more than compensated for the $0.4 million decline in service fees during the period.

Further detail by type of non-interest income follows:

•Service charges on deposit accounts decreased 18% in the first quarter of 2021, compared to the first quarter of 2020, as net returned check charges have declined during the period.

•Income from mortgage banking activities increased by $7.1 million or 235% in the first quarter of 2021 as compared to the first quarter of 2020. The increased income from mortgage banking activities was attributable to increased refinancing activity. The Company sells the majority of its mortgage loan production for gains versus retaining them in the loan portfolio.

•Wealth management income increased 25% for the first quarter of 2021, as compared to the first quarter of 2020. This increase reflects the impact of the acquisition of RPJ, which was acquired in the first quarter of 2020. Trust service fees increased 4% compared to the first quarter of 2020. Overall total assets under management increased to $5.4 billion at March 31, 2021 compared to $4.0 billion at March 31, 2020.

•Income from bank owned life insurance increased by 5% in the first quarter of 2021, compared to the first quarter of 2020, as a result of the additional policies from the Revere acquisition.

•Bank card income increased 15% in the first quarter of 2021, compared to the first quarter of 2020, due to a rise in consumer transaction volume.

•Other non-interest income increased $2.1 million or 124% in the first quarter of 2021, compared to the first quarter of 2020, due to income from loan pay-off activity.

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Non-interest Expense

Non-interest expense amounts and trends are presented in the following table for the periods indicated:

	Three Months Ended March 31,				2021/2020		2021/2020
(Dollars in thousands)	2021		2020		$ Change		% Change
Salaries and employee benefits	$	36,652	$	28,053	$	8,599	30.7	%
Occupancy expense of premises	5,487		4,581		906		19.8
Equipment expense	3,222		2,751		471		17.1
Marketing	1,212		1,189		23		1.9
Outside data services	2,283		1,582		701		44.3
FDIC insurance	1,492		482		1,010		209.5
Amortization of intangible assets	1,697		600		1,097		182.8
Merger and acquisition expense	45		1,454		(1,409)		(96.9)
Professional fees and services	1,731		1,826		(95)		(5.2)
Other expenses	14,352		5,228		9,124		174.5
Total non-interest expense	$	68,173	$	47,746	$	20,427	42.8

Non-interest expense increased 43% to $68.2 million in the first quarter of 2021 compared to $47.7 million in the first quarter of 2020. The year-over-year $20.4 million growth was driven by two factors: the impact of the acquisitions of Revere and RPJ, which increased operational and compensation costs, in addition to the associated increase in intangible asset amortization, and the prepayment penalties incurred on the early redemption of FHLB advances. Further detail by category of non-interest expense follows:

•Salaries and employee benefits, the largest component of non-interest expenses, increased 31% in the first quarter of 2021 compared to the same period of the prior year, as a result of staffing increases from the 2020 acquisitions. The remainder of the increase was due to incentives earned from mortgage loan production and commission compensation. The average number of full-time equivalent employees rose as a result of acquisition to 1,139 in the first quarter of 2021 compared to 943 in the first quarter of 2020.

•Occupancy and equipment expenses for the quarter increased a combined 19% compared to the prior year quarter as a result of the cost associated with the additional branches and business offices.

•Marketing expense increased 2% compared to the prior year as a result of increased advertising initiatives.

•FDIC insurance expense increased by $1.0 million, due to the combined result of the asset growth from the Revere acquisition coupled with the impact that the pandemic had on credit metrics applied in determining the Company's deposit insurance assessment rate.

•Outside data service expense grew 44% driven by the contractual data services with volume-based components.

•Professional fees and services decreased 5% from the prior year quarter due to decreased costs associated with credit management.

•Amortization of intangible assets increased primarily as a result of the amortization expense from the core deposit intangible asset recognized in the Revere transaction, and to a lesser degree, the amortization of intangibles acquired from the RPJ acquisition.

Income Taxes

The Company had income tax expense of $24.5 million in the first quarter of 2021, compared to income tax expense of $0.3 million in the first quarter of 2020. The resulting effective tax rate was 24.5% for the first quarter of 2021 compared to an effective tax rate of 2.9% for the first quarter of 2020. The increase in the effective tax rate for the current quarter compared to the prior year quarter was the result of the impact of a tax provision contained in the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") legislation passed in the first quarter of 2020 that expanded the time permitted to utilize previous net operating losses. The Company applied this change in conjunction with the 2018 acquisition of WashingtonFirst Bankshares, Inc. to realize a tax benefit of $1.8 million in the prior year quarter.

Operating Expense Performance

Management views the GAAP efficiency ratio as an important financial measure of expense performance and cost management. The ratio expresses the level of non-interest expense as a percentage of total revenue (net interest income plus total non-interest income). Lower ratios may indicate improved productivity as the growth rate in revenue streams exceeds the growth in operating expenses.

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Non-GAAP Financial Measures

The Company uses a traditional efficiency ratio that is a non-GAAP financial measure of operating expense control and efficiency of operations. Management believes that its traditional efficiency ratio better focuses attention on the operating performance of the Company over time than does a GAAP efficiency ratio and is highly useful in comparing period-to-period operating performance of the Company’s core business operations. It is used by management as part of its assessment of its performance in managing non-interest expense. However, this measure is supplemental, and is not a substitute for an analysis of performance based on GAAP measures. The reader is cautioned that the non-GAAP efficiency ratio used by the Company may not be comparable to GAAP or non-GAAP efficiency ratios reported by other financial institutions.

In general, the efficiency ratio is non-interest expense as a percentage of net interest income plus non-interest income. Non-interest expense used in the calculation of the non-GAAP efficiency ratio excludes merger and acquisition expense, the amortization of intangibles, and other non-recurring expenses, such as early prepayment penalties on FHLB advances. Income for the non-GAAP efficiency ratio includes the favorable effect of tax-exempt income, and excludes securities gains and losses, which may vary widely from period to period without appreciably affecting operating expenses, and other non-recurring gains (if any). The measure is different from the GAAP efficiency ratio, which also is presented in this report. The GAAP measure is calculated using non-interest expense and income amounts as shown on the face of the Condensed Consolidated Statements of Income. The GAAP efficiency ratio in the first quarter of 2021 was 51.08% compared to 57.87% for the first quarter of 2020, as revenue growth of 62% outpaced the 43% growth in non-interest expense during the period. The GAAP and non-GAAP efficiency ratios are reconciled and provided in the following table. The non-GAAP efficiency ratio was 42.65% in the first quarter of 2021 compared to 54.76% in the first quarter of 2020. The improvement in the current year’s non-GAAP efficiency ratio compared to the prior year, was the result of the 61% rate of growth in non-GAAP revenue which outpaced the 25% growth in the non-GAAP non-interest expense.

In addition, the Company uses pre-tax, pre-provision income adjusted for merger and acquisition expense as a measure of the level of recurring income before taxes. Management believes this provides financial statement users with a useful metric of the run-rate of revenues and expenses that is readily comparable to other financial institutions. This measure is calculated by adjusting the provision for credit losses, merger and acquisition expense and the provision for income taxes from net income. Pre-tax, pre-provision income, excluding merger and acquisition expense, increased for the first quarter of 2021 compared to the first quarter of 2020, driven by the positive net impact that the 2020 acquisitions had on net revenues.

The Company has presented core earnings, core earnings per share, core return on average assets and core return on average tangible common equity in order to present metrics that are more comparable to prior periods to provide an indication of the core performance of the Company year over year. Core earnings reflect net income exclusive of the provision for credit losses, provision for unfunded loan commitments, merger and acquisition expense, loss on FHLB redemptions, and investment securities gains, in each case net of tax. At March 31, 2021, core earnings were $56.9 million ($1.20 per diluted common share), compared to $29.6 million ($0.85 per diluted common share) for the quarter ended March 31, 2020. Average tangible assets and average tangible common equity represents average assets and average stockholders’ equity, respectively, adjusted for average goodwill and average intangible assets, net. For the three months ended March 31, 2021, the non-GAAP core ROA was 1.80% compared to 1.37% for the prior year quarter. The non-GAAP core ROTCE was 21.48% for the quarter ended March 31, 2021 compared to 15.85% for the first quarter of 2020.

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GAAP and Non-GAAP Efficiency Ratios and Measures

	Three Months Ended March 31,
(Dollars in thousands)	2021			2020
Pre-tax pre-provision pre-merger income:
Net income (GAAP)	$	75,464		$	9,987
Plus non-GAAP adjustments:
Merger and acquisition expense	45			1,454
Income tax expense	24,537			300
Provision/ (credit) for credit losses	(34,708)			24,469
Pre-tax pre-provision pre-merger income	$	65,338		$	36,210
Efficiency ratio (GAAP):
Non-interest expense	$	68,173		$	47,746
Net interest income plus non-interest income	$	133,466		$	82,502
Efficiency ratio (GAAP)	51.08		%	57.87		%
Efficiency ratio (non-GAAP):
Non-interest expense	$	68,173		$	47,746
Less non-GAAP adjustments:
Amortization of intangible assets	1,697			600
Loss on FHLB redemption	9,117			—
Merger and acquisition expense	45			1,454
Non-interest expense - as adjusted	$	57,314		$	45,692
Net interest income plus non-interest income	$	133,466		$	82,502
Plus non-GAAP adjustment:
Tax-equivalent income	980			1,108
Less non-GAAP adjustment:
Securities gains	58			169
Net interest income plus non-interest income - as adjusted	$	134,388		$	83,441
Efficiency ratio (non-GAAP)	42.65		%	54.76		%

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GAAP and Non-GAAP Performance Ratios

	Three Months Ended March 31,
(Dollars in thousands)	2021			2020
Core earnings (non-GAAP):
Net income (GAAP)	$	75,464		$	9,987
Plus/ (less) non-GAAP adjustments (net of tax):
Provision/ (credit) for credit losses	(25,857)			18,242
Provision/ (credit) for credit losses on unfunded loan commitments	(705)			—
Merger and acquisition expense	34			1,084
Amortization of intangible assets	1,264			447
Loss on FHLB redemption	6,792			—
Investment securities gains	(43)			(126)
Core earnings (non-GAAP)	$	56,949		$	29,634
Core earnings per common share (non-GAAP):
Weighted-average shares outstanding - diluted (GAAP)	47,415,060			34,743,623
Earnings per diluted common share (GAAP)	$	1.58		$	0.28
Core earnings per diluted common share (non-GAAP)	$	1.20		$	0.85
Core return on average assets (non-GAAP):
Average assets (GAAP)	$	12,801,539		$	8,699,342
Return on average assets (GAAP)	2.39		%	0.46		%
Core return on average assets (non-GAAP)	1.80		%	1.37		%
Core return on average tangible common equity (non-GAAP):
Average total stockholders' equity (GAAP)	$	1,477,150		$	1,130,051
Average goodwill	(370,223)			(366,044)
Average other intangible assets, net	(31,896)			(11,810)
Average tangible common equity (non-GAAP)	$	1,075,031		$	752,197
Return on average tangible common equity (GAAP)	28.47		%	5.34		%
Core return on average tangible common equity (non-GAAP)	21.48		%	15.85		%

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FINANCIAL CONDITION

The Company’s total assets were $12.9 billion at March 31, 2021, as compared to $12.8 billion at December 31, 2020. During this period, total loans remained level at $10.4 billion at March 31, 2021, compared to December 31, 2020. Deposit growth was 6% from December 31, 2020 to March 31, 2021, as noninterest-bearing deposits experienced growth of 13% and interest-bearing deposits grew 3%. Deposit growth was also positively affected by the influx of funds from the second round of the PPP program, as loan funds were placed in existing deposit accounts at the Bank. The growth in deposits resulted in the loan to deposit ratio declining to 97.8% at March 31, 2021 from 103.7% at December 31, 2020.

Loans

Excluding PPP loans, total loans declined 2% to $9.1 billion at March 31, 2021 from $9.3 billion at year-end 2020, a decline of $194.7 million. This decline was a reflection of the high level of early pay-offs coupled with lower seasonally affected loan production. It is believed that this trend is temporary and that due to the current credit resiliency of the portfolio and significant availability of liquidity the Company is well positioned for future loan growth. Commercial loans, excluding PPP loans, declined $77.1 million or 1% from December 31, 2020. The remainder of the loan portfolio also declined 7% in the first quarter of 2021, principally in the residential real estate portfolio as the majority of the purchase money and refinance loan originations have been sold in the secondary market.

Analysis of Loans

A comparison of the loan portfolio at the dates indicated is presented in the following table:

	March 31, 2021				December 31, 2020				Period-to-Period Change
(Dollars in thousands)	Amount		%		Amount		%		Amount		%
Commercial real estate:
Commercial owner-occupied real estate	$	3,652,418	35.0	%	$	3,634,720	34.9	%	$	17,698	0.5	%
Commercial investor real estate	1,644,848		15.7		1,642,216		15.8		2,632		0.2
Commercial AD&C	1,051,013		10.1		1,050,973		10.1		40		—
Commercial business	2,411,109		23.1		2,267,548		21.8		143,561		6.3
Total commercial loans	8,759,388		83.9		8,595,457		82.6		163,931		1.9
Residential real estate:
Residential mortgage	1,022,546		9.8		1,105,179		10.6		(82,633)		(7.5)
Residential construction	171,028		1.6		182,619		1.8		(11,591)		(6.3)
Consumer	493,904		4.7		517,254		5.0		(23,350)		(4.5)
Total residential and consumer loans	1,687,478		16.1		1,805,052		17.4		(117,574)		(6.5)
Total loans	$	10,446,866	100.0	%	$	10,400,509	100.0	%	$	46,357	0.4

During the current quarter the Company originated $446.0 million in first and second draw loans under the reinitiated PPP program. During the quarter, the Company recognized $7.9 million of fees into interest income from the total fees received under the program. In addition to processing applications for new loans under the reinitiated PPP program, the Company began accepting digital PPP forgiveness applications. As of April 22, 2021, $282.0 million of the Company's PPP loans have been granted forgiveness by the SBA. Overall, the Company has originated approximately 8,400 PPP loans amounting to $1.6 billion of which $1.3 billion are outstanding at March 31, 2021.

From March 2020 through March 31, 2021, the Company granted payment modifications or deferrals to clients who have suffered financial hardship due to the COVID-19 pandemic. At the end of the current quarter, 176 loans with an aggregate balance of $233.0 million remain in deferral status, of which non-accrual loans comprised $56.7 million. Currently, the vast majority of loans that had been granted modifications/deferrals due to pandemic related financial stress have returned to their original payment plans.

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Analysis of Investment Securities

The composition of investment securities at the periods indicated is presented in the following table:

	March 31, 2021				December 31, 2020				Period-to-Period Change
(Dollars in thousands)	Amount		%		Amount		%		Amount		%
Investments available-for-sale:
U.S. treasuries and government agencies	$	48,086	3.3	%	$	43,297	3.1	%	$	4,789	11.1	%
State and municipal	366,032		24.9		390,367		27.6		(24,335)		(6.2)	%
Mortgage-backed and asset-backed	1,006,179		68.3		904,432		64.0		101,747		11.2	%
Corporate debt	7,583		0.5		9,925		0.7		(2,342)		(23.6)	%
Total available-for-sale securities	1,427,880		97.0		1,348,021		95.4		79,859		5.9	%
Other equity:
Federal Reserve Bank stock	34,028		2.3		38,650		2.7		(4,622)		(12.0)	%
Federal Home Loan Bank of Atlanta stock	10,142		0.7		26,433		1.9		(16,291)		(61.6)	%
Other equity securities	677		—		677		—		—		—	%
Total other equity securities	44,847		3.0		65,760		4.6		(20,913)		(31.8)	%
Total securities(3)	$	1,472,727	100.0	%	$	1,413,781	100.0	%	$	58,946	4.2	%

The investment portfolio consists primarily of U.S. Treasuries, U.S. Agency securities, U.S. Agency mortgage-backed securities, U.S. Agency collateralized mortgage obligations, asset-backed securities and state and municipal securities. The portfolio is monitored on a continuing basis with consideration given to interest rate trends and the structure of the yield curve and with a frequent assessment of economic projections and analysis. At March 31, 2021, 95% of the investment portfolio was invested in Aaa/AAA or Aa/AA-rated securities. The duration of the portfolio is monitored to ensure the adequacy and ability to meet liquidity demands. At March 31, 2021 the duration of the portfolio increased to 5.3 years compared to 4.2 years at December 31, 2020, as a result of the re-investment of cash flows from the portfolio at lower rates due to maturities in the current year. The portfolio possesses low credit risk and provides a source of liquidity necessary to meet loan and operational demands.

Other Earning Assets

Residential mortgage loans held for sale increased to $84.9 million at March 31, 2021, compared to $78.3 million at December 31, 2020, as a result of the timing of sales of mortgages. The Company continues to sell the majority of its mortgage loan production in the secondary market. The aggregate of interest-bearing deposits with banks and federal funds sold decreased by $75.5 million at March 31, 2021 compared to December 31, 2020 due to the timing of certain funding requirements.

Deposits

The composition of deposits at the periods indicated is presented in the following table:

	March 31, 2021				December 31, 2020				Period-to-Period Change
(Dollars in thousands)	Amount		%		Amount		%		Amount		%
Noninterest-bearing deposits	$	3,770,852	35.3	%	$	3,325,547	33.1	%	$	445,305	13.4	%
Interest-bearing deposits:
Demand	1,395,209		13.1		1,292,164		12.9		103,045		8.0
Money market savings	3,371,400		31.6		3,339,645		33.3		31,755		1.0
Regular savings	465,125		4.3		418,051		4.2		47,074		11.3
Time deposits of less than $100,000	474,684		4.4		509,919		5.1		(35,235)		(6.9)
Time deposits greater than $100,000 and less than $250,000	774,668		7.3		670,717		6.7		103,951		15.5
Time deposits of $250,000 or more	425,814		4.0		477,026		4.7		(51,212)		(10.7)
Total interest-bearing deposits	6,906,900		64.7		6,707,522		66.9		199,378		3.0
Total deposits	$	10,677,752	100.0	%	$	10,033,069	100.0	%	$	644,683	6.4

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Deposits and Borrowings

Total deposits increased by 6% to $10.7 billion at March 31, 2021 from $10.0 billion at December 31, 2020. This increase was positively affected by the influx of funds from the re-initiated PPP program in the first quarter of 2021, as a portion of the $446.0 million in PPP loan fundings were placed in existing deposit accounts at the Bank until utilized by the respective borrowers. This resulted in noninterest-bearing deposits increasing 13% and interest-bearing deposits increasing 3%. At March 31, 2021, interest-bearing deposits represented 65% of deposits with the remaining 35% in noninterest-bearing balances, compared to 67% and 33%, respectively, at December 31, 2020. Growth of interest-bearing deposits from December 31, 2020 through March 31, 2021 occurred in demand deposit, money market and regular savings accounts, the result of PPP fundings deposited principally in commercial deposit accounts. Total time deposits remained relatively stable during this period.

Capital Management

Management monitors historical and projected earnings, dividends, and asset growth, as well as risks associated with the various types of on and off-balance sheet assets and liabilities, in order to determine appropriate capital levels. Total stockholders' equity remained stable and was $1.5 billion at March 31, 2021 compared to December 31, 2020. The ratio of average equity to average assets was 11.54% for the three months ended March 31, 2021, as compared to 11.34% for the three months ended December 31, 2020. This ratio was 12.99% for the first quarter of 2020 and declined compared to the current quarter due to the increase in average assets as compared to the increase in average equity as a result of the Revere acquisition.

Risk-Based Capital Ratios

Bank holding companies and banks are required to maintain capital ratios in accordance with guidelines adopted by the federal bank regulators. These guidelines are commonly known as risk-based capital guidelines. The actual regulatory ratios and required ratios for capital adequacy are summarized for the Company in the following table.

	Ratios at		Minimum Regulatory Requirements
	March 31, 2021	December 31, 2020
Tier 1 leverage	9.14%	8.92%	4.00%
Common equity tier 1 capital to risk-weighted assets	12.09%	10.58%	4.50%
Tier 1 capital to risk-weighted assets	12.09%	10.58%	6.00%
Total capital to risk-weighted assets	15.49%	13.93%	8.00%

As of March 31, 2021, the most recent notification from the Bank’s primary regulator categorized the Bank as a "well-capitalized" institution under the prompt corrective action rules of the Federal Deposit Insurance Act. Designation as a well-capitalized institution under these regulations is not a recommendation or endorsement of the Company or the Bank by federal bank regulators.

The minimum capital level requirements applicable to the Company and the Bank are: (1) a common equity Tier 1 capital ratio of 4.5%; (2) a Tier 1 capital ratio of 6%; (3) a total capital ratio of 8%; and (4) a Tier 1 leverage ratio of 4%. The rules also establish a “capital conservation buffer” of 2.5% above the regulatory minimum capital requirements, which must consist entirely of common equity Tier 1 capital. An institution would be subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses to executive officers if its capital level falls below the buffer amount. These limitations establish a maximum percentage of eligible retained income that could be utilized for such actions.

The increases in the ratios at March 31, 2021 from December 31, 2020 were driven by the first quarter's net income coupled with a decline in risk-based assets during the period. During 2020, the Company elected to apply the provisions of the CECL deferral transition in the determination of its risk-based capital ratios. At March 31, 2021, the impact of the application of this deferral transition provided an additional $15.3 million in Tier 1 capital and resulted in raising the common equity Tier 1 ratio by 17 basis points.

Tangible Common Equity

Tangible common equity, tangible assets, and tangible book value per share are non-GAAP financial measures calculated using GAAP amounts. Tangible common equity and tangible assets exclude the balances of goodwill and other intangible assets. Management believes that this non-GAAP financial measure provides information to investors that may be useful in

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understanding our financial condition. Because not all companies use the same calculation of tangible common equity and tangible assets, this presentation may not be comparable to other similarly titled measures calculated by other companies.

Tangible common equity at March 31, 2021, compared to December 31, 2020 remained at $1.1 billion. At March 31, 2021, the ratio of tangible common equity to tangible assets has increased to 8.90% compared to 8.61% at December 31, 2020. The increase in the tangible common equity ratio ("TCE ratio") was caused primarily by the growth of tangible common equity, which grew at 4% versus the 1% in tangible assets.

A reconciliation of total stockholders’ equity to tangible common equity and total assets to tangible assets along with tangible book value per share, book value per share and related non-GAAP tangible common equity ratio are provided in the following table:

Tangible Common Equity Ratio – Non-GAAP

(Dollars in thousands, except per share data)	March 31, 2021			December 31, 2020
Tangible common equity ratio:
Total stockholders' equity	$	1,511,694		$	1,469,955
Goodwill	(370,223)			(370,223)
Other intangible assets, net	(30,824)			(32,521)
Tangible common equity	$	1,110,647		$	1,067,211
Total assets	$	12,873,366		$	12,798,429
Goodwill	(370,223)			(370,223)
Other intangible assets, net	(30,824)			(32,521)
Tangible assets	$	12,472,319		$	12,395,685
Tangible common equity ratio	8.90		%	8.61		%
Outstanding common shares	47,187,389			47,056,777
Tangible book value per common share	$	23.54		$	22.68
Book value per common share	$	32.04		$	31.24

Credit Risk

The fundamental lending business of the Company is based on understanding, measuring and controlling the credit risk inherent in the loan portfolio. The Company’s loan portfolio is subject to varying degrees of credit risk. Credit risk entails both general risks, which are inherent in the process of lending, and risk specific to individual borrowers. The Company’s credit risk is mitigated through portfolio diversification, which limits exposure to any single customer, industry or collateral type. Typically, each consumer and residential lending product has a generally predictable level of credit losses based on historical loss experience. Residential mortgage and home equity loans and lines generally have the lowest credit loss experience. Loans secured by personal property, such as auto loans, generally experience medium credit losses. Unsecured loan products, such as personal revolving credit, have the highest credit loss experience and, for that reason, the Company has chosen not to engage in a significant amount of this type of lending. Credit risk in commercial lending can vary significantly, as losses as a percentage of outstanding loans can shift widely during economic cycles and are particularly sensitive to changing economic conditions. Generally, improving economic conditions result in improved operating results on the part of commercial customers, enhancing their ability to meet their particular debt service requirements. Improvements, if any, in operating cash flows can be offset by the impact of rising interest rates that may occur during improved economic times. Inconsistent economic conditions may have an adverse effect on the operating results of commercial customers, reducing their ability to meet debt service obligations.

Loans acquired as a part of an acquisition transaction with evidence of more-than-insignificant credit deterioration since their origination as of the date of the acquisition are considered “purchased credit deteriorated” or “PCD” loans and are recorded at their initial fair values. The identification of loans that have experienced a more-than-insignificant deterioration in credit quality since their origination requires judgment and an assessment of a number of factors. For further discussion regarding the

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acquired loans, including PCD loans, refer to that section of Note 1 - Significant Accounting Policies in the Notes to the Condensed Consolidated Financial Statements.

To control and manage credit risk, management has a credit process in place to reasonably ensure that credit standards are maintained along with an in-house loan administration, accompanied by oversight and review procedures. The primary purpose of loan underwriting is the evaluation of specific lending risks and involves the analysis of the borrower’s ability to service the debt as well as the assessment of the value of the underlying collateral. Oversight and review procedures include monitoring the credit quality of the portfolio, providing early identification of potential problem credits and proactive management of problem credits.

The Company recognizes a lending relationship as non-performing when either the loan becomes 90 days delinquent or as a result of factors, such as bankruptcy, interruption of cash flows, etc., considered at the monthly credit committee meeting. Classification as a non-accrual loan is based on a determination that the Company may not collect all principal and/or interest payments according to contractual terms. When a loan is placed on non-accrual status all accrued but unpaid interest is reversed from interest income. Typically, all payments received on non-accrual loans are first applied to the remaining principal balance of the loans. Any additional recoveries are credited to the allowance up to the amount of all previous charge-offs.

The level of non-performing loans to total loans was 0.94% at March 31, 2021, compared to 0.80% at March 31, 2020, and 1.11% at December 31, 2020. At March 31, 2021, non-performing loans totaled $98.7 million, compared to $54.0 million at March 31, 2020, and $115.5 million at December 31, 2020. During the current quarter, the Company realized the full settlement of $16.0 million in non-accrual loans and recognized $1.3 million in interest income. Non-performing loans include non-accrual loans, accruing loans 90 days or more past due and restructured loans. The year-over-year growth in non-performing loans was driven by two major components: loans placed on non-accrual status and acquired Revere non-accrual loans. Loans placed on non-accrual during the current quarter amounted to $0.4 million compared to $2.4 million for the prior year quarter and $54.7 million for the fourth quarter of 2020. Loans in non-accrual status at quarter end included a small number of large borrowing relationships within the hospitality sector with an aggregate balance of $43.8 million. These large relationships are collateral dependent and required no individual reserves due to sufficient values of the underlying collateral.

While the diversification of the lending portfolio among different commercial, residential and consumer product lines along with different market conditions of the D.C. suburbs, Northern Virginia and Baltimore metropolitan area has mitigated some of the risks in the portfolio, local economic conditions and levels of non-performing loans may continue to be influenced by the conditions being experienced in various business sectors of the economy on both a regional and national level. As noted, risks, uncertainties and various other factors related to the COVID-19 pandemic includes the impact on the economy and the businesses of our borrowers and their ability to remit contractual payments on their obligations to the Company in a timely manner. The current ability to predict the outcome or impact of the remedial actions and stimulus measures adopted by the government on the economic well-being of our borrowers and the manifestations of all these factors including the future performance aspect of the credit portfolio remains uncertain.

The Company’s methodology for evaluating whether a loan shall be placed on non-accrual status begins with risk-rating credits on an individual basis and includes consideration of the borrower’s overall financial condition, payment record and available cash resources that may include the sufficiency of collateral value and, in a select few cases, verifiable support from financial guarantors. In measuring a specific allowance, the Company looks primarily to the value of the collateral (adjusted for estimated costs to sell) or projected cash flows generated by the operation of the collateral as the primary sources of repayment of the loan. The Company may consider the existence of guarantees and the financial strength and wherewithal of the guarantors involved in any loan relationship. Guarantees may be considered as a source of repayment based on the guarantor’s financial condition and payment capacity. Accordingly, absent a verifiable payment capacity, a guarantee alone would not be sufficient to avoid classifying the loan as non-accrual.

Management has established a credit process that dictates that structured procedures be performed to monitor these loans between the receipt of an original appraisal and the updated appraisal. These procedures include the following:

•An internal evaluation is updated periodically to include borrower financial statements and/or cash flow projections.

•The borrower may be contacted for a meeting to discuss an updated or revised action plan which may include a request for additional collateral.

•Re-verification of the documentation supporting the Company’s position with respect to the collateral securing the loan.

•At the monthly credit committee meeting the loan may be downgraded and a specific allowance may be decided upon in advance of the receipt of the appraisal.

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•Upon receipt of the updated appraisal (or based on an updated internal financial evaluation) the loan balance is compared to the appraisal and a specific allowance is decided upon for the particular loan, typically for the amount of the difference between the appraised value (adjusted for estimated costs to sell) and the loan balance.

•Evaluation of whether adverse changes in the value of the collateral are expected over the remainder of the loan’s expected life.

•The Company will individually assess the allowance for credit losses based on the fair value of the collateral for any collateral dependent loans where the borrower is experiencing financial difficulty or when the Company determines that the foreclosure is probable. The Company will charge-off the excess of the loan amount over the fair value of the collateral adjusted for the estimated selling costs.

Loans considered to be troubled debt restructurings (“TDRs”) are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured collateral-dependent loans are individually assessed for allowance for credit losses and may either be in accruing or non-accruing status. Non-accruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category if the borrower is no longer experiencing financial difficulty, a re-underwriting event took place and the revised loan terms of the subsequent restructuring agreement are considered to be consistent with terms that can be obtained in the credit market for loans with comparable risk.

The CARES Act provided financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. Federal regulatory agencies issued a joint statement that provided further guidance on loan modifications related to COVID-19. The CARES Act provided for extensions of up to 180 days in the delay of loan principal and/or interest payments for customers who are affected by the COVID-19 pandemic. These customers must meet certain criteria, such as they were in good standing and not more than 30 days past due prior to the pandemic, as well as other requirements noted in the regulatory agencies’ revised statement. In some cases, customers received a second and third accommodation. The initial period to request payment accommodation expired on December 31, 2020. However, recently passed legislation has extended this request period to December 31, 2021. Based on the guidance noted above, the Company does not classify the COVID-19 loan modifications as TDRs, nor are the customers considered past due with regards to their delayed payments. Upon exiting the loan modification deferral program, the measurement of loan delinquency will resume where it left off upon entry into the program.

In an effort to provide for relief to borrowers that have suffered financial hardship due to the COVID-19 pandemic, the Company granted accommodations in the form of payment deferrals on over 2,600 loans with an aggregate balance of $2.1 billion. At March 31, 2021, loans with payment accommodation amounted to $233 million or 3% of the total loan portfolio, excluding PPP loans. Accommodations on commercial loans comprised $221 million or 95% of the total accommodations at March 31, 2021. Applying the stipulated criteria for both rounds of the PPP program, at March 31, 2021, the Company had approved and funded over 8,400 loans for a total of $1.6 billion in PPP loans to businesses. The Company has ceased taking applications for PPP Loans. Loans originated under the program are 100% guaranteed by the Small Business Administration.

The Company may extend the maturity of a performing or current loan that may have some inherent weakness associated with the loan. However, the Company generally follows a policy of not extending maturities on non-performing loans under existing terms. Maturity date extensions only occur under revised terms that clearly place the Company in a position to increase the likelihood of or assure full collection of the loan under the contractual terms and/or terms at the time of the extension that may eliminate or mitigate the inherent weakness in the loan. These terms may incorporate, but are not limited to additional assignment of collateral, significant balance curtailments/liquidations and assignments of additional project cash flows. Guarantees may be a consideration in the extension of loan maturities. As a general matter, the Company does not view the extension of a loan to be a satisfactory approach to resolving non-performing credits. On an exception basis, certain performing loans that have displayed some inherent weakness in the underlying collateral values, an inability to comply with certain loan covenants which are not affecting the performance of the credit or other identified weakness may be extended.

The Company typically sells a substantial portion of its fixed-rate residential mortgage originations in the secondary mortgage market. Concurrent with such sales, the Company is required to make customary representations and warranties to the purchasers about the mortgage loans and the manner in which they were originated. The related sale agreements grant the purchasers recourse back to the Company, which could require the Company to repurchase loans or to share in any losses incurred by the purchasers. This recourse exposure typically extends for a period of six to twelve months after the sale of the loan although the time frame for repurchase requests can extend for an indefinite period. Such transactions could be due to a number of causes including borrower fraud or early payment default. The Company has seen a very limited number of

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repurchase and indemnity demands from purchasers for such events and routinely monitors its exposure in this regard. The Company maintains a liability of $0.6 million for possible losses due to repurchases.

The Company periodically engages in whole loan sale transactions of its residential mortgage loans as a part its interest rate risk management strategy. There were no whole loan sales of mortgage loans from the portfolio during the current year.

Mortgage loan servicing rights are accounted for at amortized cost and are monitored for impairment on an ongoing basis. The amortized cost of the Company's mortgage loan servicing rights was $0.5 million at March 31, 2021 compared to $0.6 million at December 31, 2020.

Analysis of Credit Risk

The following table presents information with respect to non-performing assets and 90-day delinquencies as of the periods indicated:

(Dollars in thousands)	March 31, 2021			December 31, 2020
Non-accrual loans:
Commercial real estate:
Commercial investor real estate	$	42,776		$	45,227
Commercial owner-occupied real estate	8,316			11,561
Commercial AD&C	14,975			15,044
Commercial business	13,147			22,933
Residential real estate:
Residential mortgage	9,593			10,212
Residential construction	—			—
Consumer	7,193			7,384
Total non-accrual loans	96,000			112,361
Loans 90 days past due:
Commercial real estate:
Commercial investor real estate	—			133
Commercial owner-occupied real estate	—			—
Commercial AD&C	—			—
Commercial business	31			161
Residential real estate:
Residential mortgage	398			480
Residential construction	—			—
Consumer	—			—
Total 90 days past due loans	429			774
Restructured loans (accruing)	2,271			2,317
Total non-performing loans	98,700			115,452
Other real estate owned, net	1,354			1,455
Total non-performing assets	$	100,054		$	116,907
Non-performing loans to total loans	0.94		%	1.11		%
Non-performing assets to total assets	0.78		%	0.91		%
Allowance for credit losses to non-performing loans	132.08		%	143.23		%

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The following table discloses information on the credit quality of originated loans, acquired Revere loans and total loans:

	March 31, 2021
(Dollars in thousands)	Originated  Loans			Revere Acquired  Loans			Total  Loans
Performing loans:
Current	$	8,257,381		$	2,039,279		$	10,296,660
30-59 days	28,308			13,617			41,925
60-89 days	5,056			4,525			9,581
Total performing loans	8,290,745			2,057,421			10,348,166
Non-performing loans:
Non-accrual loans	57,077			38,923			96,000
Loans greater than 90 days past due	398			31			429
Restructured loans	2,271			—			2,271
Total non-performing loans	59,746			38,954			98,700
Total loans	$	8,350,491		$	2,096,375		$	10,446,866
Non-performing loans to total loans	0.72		%	1.86		%	0.94		%
Allowance for credit losses to non-performing loans	160.64		%	88.27		%	132.08		%

Allowance for Credit Losses

The allowance for credit losses represents management’s estimate of the portion of the Company’s loans’ amortized cost basis not expected to be collected over the loans’ contractual life. As a part of the credit oversight and review process, the Company maintains an allowance for credit losses (the “allowance”). The following allowance section should be read in conjunction with “Allowance for Credit Losses” section in Note 1 – Significant Accounting Policies in the Notes to the Condensed Consolidated Financial Statements. The Company excludes accrued interest from the measurement of the allowance as the Company has a non-accrual policy to reverse any accrued, uncollected interest income when loans are placed on non-accrual status.

The adequacy of the allowance is determined through ongoing evaluation of the credit portfolio, and involves consideration of a number of factors. Determination of the allowance is inherently subjective and requires significant estimates, including consideration of current conditions and future economic forecasts, which may be susceptible to significant volatility. The amount of expected losses can vary significantly from the amounts actually observed. Loans deemed uncollectible are charged off against the allowance, while recoveries are credited to the allowance when received. Management adjusts the level of the allowance through the provision for credit losses in the Condensed Consolidated Statement of Income.

The credit to the provision for credit losses totaled $34.7 million for the three months ended March 31, 2021 compared to a provision charge of $24.5 million for the same period in the prior year. During the prior year, the provision for credit losses was significantly impacted by the negative projected impact of COVID-19 on specific forecasted economic metrics used in the Company’s CECL model. During 2021, however, the projected impact that existed in the prior year reversed itself as the overall economic outlook significantly improved. The forecasted economic metrics with the greatest impact in the CECL model, in order of magnitude were, the expected future unemployment rate, the expected level of business bankruptcies and, to a lesser degree, the house price index. These metric expectations were based on the assessment of the impact on the Company’s market area caused by the economic disruption. The portion of the $34.7 million credit to provision directly attributable to the significant improvement in the economic forecast amounted to a credit of approximately $41.9 million. The remainder of the changes to the provision reflected the impact of changes in interest rates, existing terms, qualitative factors, portfolio composition and portfolio maturities.

At March 31, 2021, the allowance for credit losses was $130.4 million as compared to $165.4 million at December 31, 2020. The allowance for credit losses as a percent of total loans was 1.25% and 1.59% at March 31, 2021 and December 31, 2020, respectively. The allowance for credit losses represented 132% of non-performing loans at March 31, 2021 as compared to 143% at December 31, 2020. The allowance attributable to the commercial portfolio represented 1.34% of total commercial loans while the portion attributable to total combined consumer and mortgage loans was 0.75%. With respect to the total commercial portion of the allowance, 27% of this portion is allocated to the commercial business loan portfolio, resulting in the ratio of the allowance for commercial business loans to total commercial business loans of 1.32%. The ratio of the allowance attributable to ADC loans was 2.18% at the end of the current quarter. Excluding the PPP loans, which do not have an

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associated allowance, the allowance for credit losses as percentage of total loans outstanding would be 1.43% and associated allowance to the commercial business portfolio would be 2.86%.

The current methodology for assessing the appropriate allowance includes: (1) a collective quantified reserve that reflects the Company’s historical default and loss experience adjusted for expected economic conditions over a reasonable and supportable forecast period and the Company’s prepayment and curtailment rates, (2) collective qualitative factors that consider concentrations of the loan portfolio, expected changes to the economic forecasts, large lending relationships, early delinquencies, and factors related to credit administration, including, among others, loan-to-value ratios, borrowers’ risk rating and credit score migrations, and (3) individual allowances on collateral-dependent loans where borrowers are experiencing financial difficulty or where the Company determined that foreclosure is probable. Under the current methodology, the impact of the utilization of the historical default and loss experience results in 73% of the total allowance being attributable to the historical performance of the portfolio while 27% of the allowance is attributable to the collective qualitative factors applied to determine the allowance.

The quantified collective portion of the allowance is determined by pooling loans into segments based on the similar risk characteristics of the underlying borrowers, in addition to consideration of collateral type, industry and business purpose of the loans. The Company selected two collective methodologies, the discounted cash flows and weighted average remaining life methodologies. Segments utilizing the discounted cash flow method are further sub-segmented based on the risk level (determined either by risk ratings or Beacon Scores). Collective calculation methodologies use the Company’s historical default and loss experience adjusted for future economic forecasts. The reasonable and supportable forecast period represents a two year economic outlook for the applicable economic variables. Following the end of the reasonable and supportable forecast period expected losses revert back to the historical mean over the next two years on a straight-line basis.

Economic variables which have the most significant impact on the allowance include:

•unemployment rate;

•number of business bankruptcies; and

•house price index.

The collective quantified component of the allowance is supplemented by a qualitative component to address various risk characteristics of the Company’s loan portfolio including:

•trends in early delinquencies;

•changes in the risk profile related to large loans in the portfolio;

•concentrations of loans to specific industry segments;

•expected changes in economic conditions;

•changes in the Company’s credit administration and loan portfolio management processes; and

•the quality of the Company’s credit risk identification processes.

The individual reserve assessment is applied to collateral dependent loans where borrowers are experiencing financial difficulty or when the Company determined that foreclosure is probable. The determination of the fair value of the collateral depends on whether a repayment of the loan is expected to be from the sale or the operation of the collateral. When repayment is expected from the operation of the collateral, the Company uses the present value of expected cash flows from the operation of the collateral as the fair value. When repayment of the loan is expected from the sale of the collateral the fair value of the collateral is based on an observable market price or the appraised value less estimated cost to sell. During the individual reserve assessment, management also considers the potential future changes in the value of the collateral over the remainder of the loan’s life. The balance of collateral-dependent loans individually assessed for the allowance was $82.0 million, with individual allowances of $13.1 million against those loans at March 31, 2021.

If an updated appraisal is received subsequent to the preliminary determination of an individual allowance or partial charge-off, and it is less than the initial appraisal used in the initial assessment, an additional individual allowance or charge-off is taken on the related credit. Partially charged-off loans are not written back up based on updated appraisals and always remain on non-accrual with any and all subsequent payments first applied to the remaining balance of the loan as principal reductions. No interest income is recognized on loans that have been partially charged-off.

A current appraisal on large loans is usually obtained if the appraisal on file is more than 12 months old and there has been a material change in market conditions, zoning, physical use or the adequacy of the collateral based on an internal evaluation. The Company’s policy is to strictly adhere to regulatory appraisal standards. If an appraisal is ordered, no more than a 30 day turnaround is requested from the appraiser, who is selected by Credit Administration from an approved appraiser list. After receipt of the updated appraisal, the assigned credit officer will recommend to the Chief Credit Officer whether an individual allowance or a charge-off should be taken. The Chief Credit Officer has the authority to approve an individual allowance or

58

charge-off between monthly credit committee meetings to ensure that there are no significant time lapses during this process. The Company's borrowers are concentrated in nine counties in Maryland, three counties in Virginia and in Washington D.C. Excluding the PPP loans, commercial and residential mortgages, including home equity loans and lines, represented 87% of total loans at both March 31, 2021 and December 31, 2020. Certain loan terms may create concentrations of credit risk and increase the Company’s exposure to loss. These include terms that permit the deferral of principal payments or payments that are smaller than normal interest accruals (negative amortization); loans with high loan-to-value ratios; loans, such as option adjustable-rate mortgages, that may expose the borrower to future increases in repayments that are in excess of increases that would result solely from increases in market interest rates; and interest-only loans. The Company does not make loans that provide for negative amortization or option adjustable-rate mortgages.

Summary of Loan Credit Loss Experience

The following table presents the activity in the allowance for credit losses for the periods indicated:

	Three Months Ended			Year Ended
(Dollars in thousands)	March 31, 2021			December 31, 2020
Balance, January 1	$	165,367		$	56,132
Initial allowance on PCD loans at adoption of ASC 326	—			2,762
Transition impact of adopting ASC 326	—			2,983
Initial allowance on acquired Revere PCD loans	—			18,628
Provision for credit losses	(34,708)			85,669
Loan charge-offs:
Commercial real estate:
Commercial investor real estate	—			(411)
Commercial owner-occupied real estate	—			—
Commercial AD&C	—			—
Commercial business	(650)			(491)
Residential real estate:
Residential mortgage	—			(484)
Residential construction	—			—
Consumer	(93)			(433)
Total charge-offs	(743)			(1,819)
Loan recoveries:
Commercial real estate:
Commercial investor real estate	27			15
Commercial owner-occupied real estate	—			—
Commercial AD&C	—			—
Commercial business	16			702
Residential real estate:
Residential mortgage	270			105
Residential construction	—			6
Consumer	132			184
Total recoveries	445			1,012
Net charge-offs	(298)			(807)
Balance, period end	$	130,361		$	165,367
Annualized net charge-offs to average loans	0.01		%	0.01		%
Allowance for credit losses to loans	1.25		%	1.59		%

 

Market Risk Management

The Company's net income is largely dependent on its net interest income. Net interest income is susceptible to interest rate risk to the extent that interest-bearing liabilities mature or re-price on a different basis than interest-earning assets. When interest-bearing liabilities mature or re-price more quickly than interest-earning assets in a given period, a significant increase in market rates of interest could adversely affect net interest income. Similarly, when interest-earning assets mature or re-price more quickly than interest-bearing liabilities, falling interest rates could result in a decrease in net interest income. Net interest

59

income is also affected by changes in the portion of interest-earning assets that are funded by interest-bearing liabilities rather than by other sources of funds, such as noninterest-bearing deposits and stockholders' equity.

The Company’s interest rate risk management goals are (1) to increase net interest income at a growth rate consistent with the growth rate of total assets, and (2) to minimize fluctuations in net interest income as a percentage of interest-earning assets. Management attempts to achieve these goals by balancing, within policy limits, the volume of floating-rate liabilities with a similar volume of floating-rate assets; by keeping the average maturity of fixed-rate asset and liability contracts reasonably matched; by maintaining a pool of administered core deposits; and by adjusting pricing rates to market conditions on a continuing basis.

The Company’s board of directors has established a comprehensive interest rate risk management policy, which is administered by management’s Asset Liability Management Committee (“ALCO”). The policy establishes limits on risk, which are quantitative measures of the percentage change in net interest income (a measure of net interest income or “NII” at risk) and the fair value of equity capital (a measure of economic value of equity or “EVE” at risk) resulting from a hypothetical change in U.S. Treasury interest rates for maturities from one day to thirty years. The Company measures the potential adverse impacts that changing interest rates may have on its short-term earnings, long-term value, and liquidity by employing simulation analysis through the use of computer modeling. The simulation model captures optionality factors such as call features and interest rate caps and floors embedded in investment and loan portfolio contracts. As with any method of gauging interest rate risk, there are certain shortcomings inherent in the interest rate modeling methodology used by the Company. When interest rates change, actual movements in different categories of interest-earning assets and interest-bearing liabilities, loan prepayments, and withdrawals of time and other deposits, may deviate significantly from assumptions used in the model. As an example, certain types of money market deposit accounts are assumed to reprice at 40 to 100% of the interest rate change in each of the up rate shock scenarios even though this is not a contractual requirement. As a practical matter, management would likely lag the impact of any upward movement in market rates on these accounts as a mechanism to manage the Company's net interest margin. Finally, the methodology does not measure or reflect the impact that higher rates may have on adjustable-rate loan customers’ ability to service their debts, or the impact of rate changes on demand for loan and deposit products.

The Company prepares a current base case and multiple alternative simulations at least once per quarter and reports the analysis to the board of directors. In addition, more frequent forecasts are produced when interest rates are particularly uncertain or when other business conditions so dictate.

The statement of condition is subject to quarterly testing for eight alternative interest rate shock possibilities to indicate the inherent interest rate risk. Average interest rates are shocked by +/- 100, 200, 300, and 400 basis points (“bp”), although the Company may elect not to use particular scenarios that it determines are impractical in a current rate environment. It is management’s goal to structure the statement of condition so that net interest income at risk over a twelve-month period and the economic value of equity at risk do not exceed policy guidelines at the various interest rate shock levels.

The Company augments its quarterly interest rate shock analysis with alternative external interest rate scenarios on a monthly basis. These alternative interest rate scenarios may include non-parallel rate ramps and non-parallel yield curve twists. If a measure of risk produced by the alternative simulations of the entire statement of condition violates policy guidelines, ALCO is required to develop a plan to restore the measure of risk to a level that complies with policy limits within two quarters.

Measures of net interest income at risk produced by simulation analysis are indicators of an institution’s short-term performance in alternative rate environments. These measures are typically based upon a relatively brief period, usually one year. They do not necessarily indicate the long-term prospects or economic value of the institution.

Estimated Changes in Net Interest Income
Change in Interest Rates:	+ 400 bp	+ 300 bp	+ 200 bp	+ 100 bp	- 100 bp	- 200 bp	-300 bp	-400 bp
Policy Limit	23.50%	17.50%	15.00%	10.00%	10.00%	15.00%	17.50%	23.50%
March 31, 2021	2.59%	1.90%	1.67%	0.55%	N/A	N/A	N/A	N/A
December 31, 2020	3.94%	2.90%	2.14%	0.85%	N/A	N/A	N/A	N/A

As reflected in the table above, the measures of net interest income at risk at March 31, 2021 declined in every rising interest rate change scenario from December 31, 2020. All measures remained well within prescribed policy limits. At March 31, 2021, further interest rate declines are improbable due to the low level of existing market rates. As the table indicates, in a rising interest rate environment, net interest income sensitivity decreased compared to December 31, 2020. The change in the net interest income at risk is the result of decreased asset sensitivity due to a shift in the composition and duration of the investment

60

portfolio coupled with increases in interest-bearing checking and short-term time deposits. The interest rate risk was partially offset by a significant reduction of the fed funds purchased balance that existed at December 31, 2020.

The measures of equity value at risk indicate the ongoing economic value of the Company by considering the effects of changes in interest rates on all of the Company’s cash flows, and by discounting the cash flows to estimate the present value of assets and liabilities. The difference between these discounted values of the assets and liabilities is the economic value of equity, which, in theory, approximates the fair value of the Company’s net assets.

Estimated Changes in Economic Value of Equity
Change in Interest Rates:	+ 400 bp	+ 300 bp	+ 200 bp	+ 100 bp	- 100 bp	- 200 bp	-300 bp	-400 bp
Policy Limit	35.00%	25.00%	20.00%	10.00%	10.00%	20.00%	25.00%	35.00%
March 31, 2021	(15.71%)	(10.45%)	(5.29%)	(1.64%)	N/A	N/A	N/A	N/A
December 31, 2020	(10.98%)	(6.27%)	(1.90%)	0.33%	N/A	N/A	N/A	N/A

Overall, the measure of the economic value of equity ("EVE") at risk increased in all rising rate scenarios from December 31, 2020 to March 31, 2021. Lower market values on loans and investments as a result of higher interest rates and increased durations increased EVE at risk. The impact of the lower market values were partially offset by the liquidation of a significant portion of the FHLB advances.

Liquidity Management

Liquidity is measured by a financial institution's ability to raise funds through loan repayments, maturing investments, deposit growth, borrowed funds, capital and the sale of highly marketable assets such as investment securities and residential mortgage loans. In assessing liquidity, management considers operating requirements, the seasonality of deposit flows, investment, loan and deposit maturities and calls, expected funding of loans and deposit withdrawals, and the market values of available-for-sale investments, so that sufficient funds are available on short notice to meet obligations as they arise and to ensure that the Company is able to pursue new business opportunities. The Company's liquidity position, considering both internal and external sources available, exceeded anticipated short-term and long-term needs at March 31, 2021.

Liquidity is measured using an approach designed to take into account core deposits, in addition to factors already discussed above. Management considers core deposits, defined to include all deposits other than brokered and outsourced deposits and certain time deposits of $250 thousand or more, to be a relatively stable funding source. Core deposits equaled 85% of total interest-earning assets at March 31, 2021. The Company’s growth and mortgage banking activities are also additional considerations when evaluating liquidity requirements. Also considered are changes in the liquidity of the investment portfolio due to fluctuations in interest rates. Under this approach, implemented by the Funding and Liquidity Subcommittee of ALCO under formal policy guidelines, the Company’s liquidity position is measured weekly, looking forward at thirty day intervals from thirty (30) to three hundred sixty (360) days. The measurement is based upon the projection of funds sold or purchased position, along with ratios and trends developed to measure dependence on purchased funds and core growth. At March 31, 2021, the Company’s liquidity and funds availability provides it with flexibility in funding loan demand and other liquidity demands.

The Company also has external sources of funds available that can be drawn upon when required. The main sources of external liquidity are available lines of credit with the FHLB and the Federal Reserve Bank. The line of credit with the FHLB totaled $3.0 billion, all of which was available for borrowing based on pledged collateral, with $100.0 million borrowed against it as of March 31, 2021. The secured lines of credit at the Federal Reserve Bank and correspondent banks totaled $420.4 million, all of which was available for borrowing based on pledged collateral, with no borrowings against it as of March 31, 2021. In addition, the Company had unsecured lines of credit with correspondent banks of $1.1 billion at March 31, 2021. At March 31, 2021, there was $60.0 million outstanding borrowings against these lines of credit. At March 31, 2021 the Company had $1.3 billion available under the PPPLF program. Any borrowing under the program would be secured by guaranteed loans originated under the PPP program. There were no outstanding borrowings under the PPPLF program at March 31, 2021. Based upon its liquidity analysis, including external sources of liquidity available, management believes the liquidity position was appropriate at March 31, 2021.

The parent company (“Bancorp”) is a separate legal entity from the Bank and must provide for its own liquidity. In addition to its operating expenses, Bancorp is responsible for paying any dividends declared to its common shareholders and interest and principal on outstanding debt. Bancorp’s primary source of income is dividends received from the Bank. The amount of dividends that the Bank may declare and pay to Bancorp in any calendar year, without the receipt of prior approval from the Federal Reserve Bank, cannot exceed net income for that year to date period plus retained net income (as defined) for the

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preceding two calendar years. Based on this requirement, as of March 31, 2021, the Bank could have declared a dividend of up to $107 million to Bancorp. At March 31, 2021, Bancorp had liquid assets of $70.0 million.

Arrangements to fund credit products or guarantee financing take the form of loan commitments (including lines of credit on revolving credit structures) and letters of credit. Approvals for these arrangements are obtained in the same manner as loans. Generally, cash flows, collateral value and risk assessment are considered when determining the amount and structure of credit arrangements.

Commitments to extend credit in the form of consumer, commercial real estate and business at the dates indicated were as follows:

(In thousands)	March 31, 2021		December 31, 2020
Commercial real estate development and construction	$	551,384	$	871,290
Residential real estate-development and construction	633,076		94,096
Real estate-residential mortgage	287,728		335,288
Lines of credit, principally home equity and business lines	2,367,669		1,947,706
Standby letters of credit	69,382		71,777
Total commitments to extend credit and available credit lines	$	3,909,239	$	3,320,157

Commitments to extend credit are agreements to provide financing to a customer with the provision that there are no violations of any condition established in the agreement. Commitments generally have interest rates determined by current market rates, expiration dates or other termination clauses and may require payment of a fee. Lines of credit typically represent unused portions of lines of credit that were provided and remain available as long as customers comply with the requisite contractual conditions. Commitments to extend credit are evaluated, processed and/or renewed regularly on a case by case basis, as part of the credit management process. The total commitment amount or line of credit amounts do not necessarily represent future cash requirements, as it is highly unlikely that all customers would draw on their lines of credit in full at one time.

As of March 31, 2021, the total reserve for unfunded commitments was $0.6 million and is accounted for in other liabilities in the Consolidated Statements of Financial Condition. See Note 1 – Significant Accounting Policies in the Notes to the Condensed Consolidated Financial Statements for more information on the accounting policy for the allowance for unfunded commitments.

62

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See “Financial Condition - Market Risk Management” in Management’s Discussion and Analysis of Financial Condition and Results of Operations, above, which is incorporated herein by reference.

Item 4. CONTROLS AND PROCEDURES

The Company’s management, under the supervision and with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, evaluated as of the last day of the period covered by this report, the effectiveness of the design and operation of the Company’s disclosure controls and procedures, as defined in Rule 13a-15 under the Securities Exchange Act of 1934. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective. There were no changes in the Company’s internal controls over financial reporting (as defined in Rule 13a-15 under the Securities Act of 1934) during the three months ended March 31, 2021 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

63

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

In the normal course of business, the Company becomes involved in litigation arising from the banking, financial and other activities it conducts. Management, after consultation with legal counsel, does not anticipate that the ultimate liability, if any, arising from these matters will have a material effect on the Company’s financial condition, operating results or liquidity.

Item 1A. Risk Factors

There have been no material changes in the risk factors as discussed in the Company's Annual Report on Form 10-K for the year ended December 31, 2020.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

In December 2020, the Company’s Board of Directors authorized the repurchase of up to 2,350,000 shares of common stock. The Company did not repurchase any shares during the three months ended March 31, 2021.

Item 3. Defaults Upon Senior Securities – None

Item 4. Mine Safety Disclosures – Not applicable

Item 5. Other Information - None

Item 6. Exhibits

Exhibit 31(a)	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a)
Exhibit 31(b)	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a)
Exhibit 32(a)	Certification of Chief Executive Officer pursuant to 18 U.S. Section 1350
Exhibit 32(b)	Certification of Chief Financial Officer pursuant to 18 U.S. Section 1350
Exhibit 101.SCH	XBRL Taxonomy Extension Schema Document
Exhibit 101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
Exhibit 101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
Exhibit 101.LAB	XBRL Taxonomy Extension Label Linkbase Document
Exhibit 101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
Exhibit 104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

64

Signatures

Pursuant to the requirements of Section 13 of the Securities Exchange Act of 1934, the Registrant has duly caused this quarterly report to be signed on its behalf by the undersigned, thereunto duly authorized.

SANDY SPRING BANCORP, INC.

(Registrant)

By: /s/ Daniel J. Schrider

Daniel J. Schrider

President and Chief Executive Officer

Date: May 7, 2021

By: /s/ Philip J. Mantua

Philip J. Mantua

Executive Vice President and Chief Financial Officer

Date: May 7, 2021

65

EX-31.A

Exhibit 31 (a)

CERTIFICATION

Rule 13a-14(a) / 15d-14(a) Certifications

I, Daniel J. Schrider, Chief Executive Officer of Sandy Spring Bancorp, Inc. (“Bancorp”), certify that:

1.I have reviewed this quarterly report on Form 10-Q of Sandy Spring Bancorp, Inc.

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 upon 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 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.

Date: May 7, 2021	/s/ Daniel J. Schrider
	Daniel J. Schrider
	President and
	Chief Executive Officer

EX-31.B

Exhibit 31 (b)

CERTIFICATION

I, Philip J. Mantua, Executive Vice President and Chief Financial Officer of Sandy Spring Bancorp, Inc. (“Bancorp”), certify that:

1.I have reviewed this quarterly report on Form 10-Q of Sandy Spring Bancorp, Inc.

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 upon 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 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.

Date: May 7, 2021	/s/ Philip J. Mantua
	Philip J. Mantua
	Executive Vice President and
	Chief Financial Officer

EX-32.A

Exhibit 32 (a)

18 U.S.C. Section 1350 Certification

I hereby certify pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that the accompanying Form 10-Q of Sandy Spring Bancorp, Inc. (“Bancorp”) for the quarterly period ended March 31, 2021, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and that the information contained in this Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Bancorp.

By:	/s/ Daniel J. Schrider
	Daniel J. Schrider
	President and Chief Executive Officer
	Date: May 7, 2021

EX-32.B

Exhibit 32 (b)

18 U.S.C. Section 1350 Certification

I hereby certify pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that the accompanying Form 10-Q of Sandy Spring Bancorp, Inc. (“Bancorp”) for the quarterly period ended March 31, 2021, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and that the information contained in this Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of Bancorp.

By:	/s/ Philip J. Mantua
	Philip J. Mantua
	Executive Vice President and Chief Financial Officer
	Date: May 7, 2021

XML

Cover - shares	3 Months Ended
	Mar. 31, 2021	May 05, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	0-19065
Entity Registrant Name	SANDY SPRING BANCORP, INC.
Entity Incorporation State Country Code	MD
Entity Tax Identification Number	52-1532952
Entity Address Address Line1	17801 Georgia Avenue
Entity Address City Or Town	Olney
Entity Address State Or Province	MD
Entity Address Postal Zip Code	20832
City Area Code	301
Local Phone Number	774-6400
Security 12b Title	Common Stock, par value $1.00 per share
Trading Symbol	SASR
Security Exchange Name	NASDAQ
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 Common Stock Shares Outstanding (in shares)		47,268,656
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
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Current Fiscal Year End Date	--12-31

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CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - UNAUDITED - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 100,739	$ 93,651
Federal funds sold	285	291
Interest-bearing deposits with banks	127,597	203,061
Cash and cash equivalents	228,621	297,003
Residential mortgage loans held for sale (at fair value)	84,930	78,294
Proceeds from sales of investment available-for-sale	1,427,880	1,348,021
Equity securities	44,847	65,760
Total loans	10,446,866	10,400,509
Less: allowance for credit losses	(130,361)	(165,367)
Net loans	10,316,505	10,235,142
Premises and equipment, net	55,361	57,720
Other real estate owned	1,354	1,455
Accrued interest receivable	44,559	46,431
Goodwill	370,223	370,223
Other intangible assets, net	30,824	32,521
Other assets	268,262	265,859
Total assets	12,873,366	12,798,429
Liabilities:
Noninterest-bearing deposits	3,770,852	3,325,547
Interest-bearing deposits	6,906,900	6,707,522
Total deposits	10,677,752	10,033,069
Securities sold under retail repurchase agreements and federal funds purchased	189,318	543,157
Advances from FHLB	100,000	379,075
Subordinated debt	227,044	227,088
Total borrowings	516,362	1,149,320
Accrued interest payable and other liabilities	167,558	146,085
Total liabilities	11,361,672	11,328,474
Stockholders' equity:
Common stock	47,187	47,057
Additional paid in capital	849,606	846,922
Retained earnings	617,553	557,271
Accumulated other comprehensive income/ (loss)	(2,652)	18,705
Total stockholders' equity	1,511,694	1,469,955
Total liabilities and stockholders' equity	$ 12,873,366	$ 12,798,429

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CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - UNAUDITED - (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	47,187,389	47,056,777
Common stock, shares outstanding (in shares)	47,187,389	47,056,777

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Interest and fees on loans	$ 107,428	$ 75,882
Interest on loans held for sale	537	291
Interest on deposits with banks	46	180
Interest and dividends on investment securities:
Taxable	3,899	6,132
Tax-advantaged	2,351	1,372
Interest on federal funds sold	0	1
Total interest income	114,261	83,858
Interest expense:
Interest on deposits	4,830	13,518
Interest on retail repurchase agreements and federal funds purchased	53	580
Interest on advances from FHLB	2,276	3,145
Interest on subordinated debt	2,502	2,281
Total interest expense	9,661	19,524
Net interest income	104,600	64,334
Provision/ (credit) for credit losses	(34,708)	24,469
Net interest income after provision/ (credit) for credit losses	139,308	39,865
Non-interest income:
Investment securities gains	58	169
Insurance agency commissions	2,153	2,129
Income from bank owned life insurance	680	645
Other income	3,706	1,653
Total non-interest income	28,866	18,168
Non-interest expense:
Salaries and employee benefits	36,652	28,053
Occupancy expense of premises	5,487	4,581
Equipment expense	3,222	2,751
Marketing	1,212	1,189
Outside data services	2,283	1,582
FDIC insurance	1,492	482
Amortization of intangible assets	1,697	600
Merger and acquisition expense	45	1,454
Professional fees and services	1,731	1,826
Other expenses	14,352	5,228
Total non-interest expense	68,173	47,746
Income before income tax expense	100,001	10,287
Income tax expense	24,537	300
Net income	$ 75,464	$ 9,987
Per share information:
Basic net income per common share (in dollars per share)	$ 1.59	$ 0.29
Diluted net income per common share (in dollars per share)	1.58	0.28
Dividends declared per share (in dollars per share)	$ 0.32	$ 0.30
Service charges on deposit accounts
Non-interest income:
Fees and commissions, mortgage banking and servicing	$ 1,852	$ 2,253
Mortgage banking activities
Non-interest income:
Fees and commissions, mortgage banking and servicing	10,169	3,033
Wealth management income
Non-interest income:
Fees and commissions, mortgage banking and servicing	8,730	6,966
Bank card fees
Non-interest income:
Fees and commissions, mortgage banking and servicing	$ 1,518	$ 1,320

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 75,464	$ 9,987
Investments available-for-sale:
Net change in unrealized gains/ (losses) on investments available-for-sale	(28,855)	14,263
Related income tax expense/ (benefit)	7,377	(3,624)
Net investment gains reclassified into earnings	(58)	(169)
Related income tax expense	15	42
Net effect on other comprehensive income/ (loss)	(21,521)	10,512
Defined benefit pension plan:
Net change of unrealized loss	227	219
Related income tax benefit	(63)	(55)
Net effect on other comprehensive income/ (loss)	164	164
Total other comprehensive income/ (loss)	(21,357)	10,676
Comprehensive income	$ 54,107	$ 20,663

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - USD ($) $ in Thousands	Total	Revision of Prior Period, Accounting Standards Update, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Revision of Prior Period, Accounting Standards Update, Adjustment	Accumulated Other Comprehensive Income/ (Loss)
Balance at beginning of period at Dec. 31, 2019	$ 1,132,974	$ (2,223)	$ 34,970	$ 586,622	$ 515,714	$ (2,223)	$ (4,332)
Net income	9,987				9,987
Other comprehensive loss, net of tax	10,676						10,676
Total other comprehensive income	20,663
Common stock dividends	(10,544)				(10,544)
Stock compensation expense	754			754
Stock option plan	122		6	116
Employee stock purchase plan	290		9	281
Common stock repurchase	(25,702)		(820)	(24,882)
Balance at end of period at Mar. 31, 2020	1,116,334		34,165	562,891	512,934		6,344
Balance at beginning of period at Dec. 31, 2020	1,469,955		47,057	846,922	557,271		18,705
Net income	75,464				75,464
Other comprehensive loss, net of tax	(21,357)						(21,357)
Total other comprehensive income	54,107
Common stock dividends	(15,182)				(15,182)
Stock compensation expense	947			947
Stock option plan	1,531		102	1,429
Employee stock purchase plan	541		20	521
Restricted stock, net	(205)		8	(213)
Balance at end of period at Mar. 31, 2021	$ 1,511,694		$ 47,187	$ 849,606	$ 617,553		$ (2,652)

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common stock dividends (in dollars per share)	$ 0.32	$ 0.30
Stock option plan (in shares)	102,365	6,013
Employee stock purchase plan (in shares)	20,417	8,617
Restricted stock (in shares)	7,830
Stock repurchased and retired (in shares)		820,328

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating activities:
Net income	$ 75,464	$ 9,987
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,462	3,427
Provision/ (credit) for credit losses	(34,708)	24,469
Share based compensation expense	947	754
Deferred income tax/ (benefit)	9,125	(5,205)
Origination of loans held for sale	(536,747)	(217,560)
Proceeds from sales of loans held for sale	540,736	208,409
Gains on sales of loans held for sale	(10,625)	(4,262)
Losses on sale of other real estate owned	0	9
Investment securities gains	(58)	(169)
Tax benefit associated with share based compensation	426	28
Net (increase)/ decrease in accrued interest receivable	1,872	(588)
Net increase in other assets	(9,461)	(19,317)
Net increase/ (decrease) accrued expenses and other liabilities	(12,786)	7,976
Other, net	370	5,055
Net cash provided by operating activities	28,017	13,013
Investing activities:
Sales/ (purchases) of equity securities	20,913
Sales/ (purchases) of equity securities		(10,582)
Purchases of investments available-for-sale	(280,942)	(241,682)
Proceeds from sales of investment available-for-sale	100,822	13,104
Proceeds from maturities, calls and principal payments of investments available-for-sale	99,668	127,111
Net increase in loans	(37,247)	(17,760)
Proceeds from the sales of other real estate owned	0	27
Cash paid for the acquisition of business activity of RPJ, net of cash acquired	0	(26,925)
Sales of/ (expenditures for) premises and equipment	420
Sales of/ (expenditures for) premises and equipment		(696)
Net cash used in investing activities	(96,366)	(157,403)
Financing activities:
Net increase in deposits	646,196	153,555
Net decrease in in retail repurchase agreements and federal funds purchased	(353,839)	(88,300)
Proceeds from FHLB advances	0	250,000
Repayment of FHLB advances	(279,075)	(9,716)
Retirement of subordinated debt	0	(10,310)
Proceeds from issuance of common stock	2,072	412
Stock tendered for payment of withholding taxes	(205)	0
Repurchase of common stock	0	(25,702)
Dividends paid	(15,182)	(10,544)
Net cash provided by/ (used in) financing activities	(33)	259,395
Net increase/ (decrease) in cash and cash equivalents	(68,382)	115,005
Cash and cash equivalents at beginning of period	297,003	146,103
Cash and cash equivalents at end of period	228,621	261,108
Supplemental disclosures:
Interest payments	11,533	17,055
Income tax payments, net of refunds of $1,834 in 2021	$ 22,276	$ 0

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Parenthetical $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Statement of Cash Flows [Abstract]
Income tax refunds	$ 1,834

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SIGNIFICANT ACCOUNTING POLICIES

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations

Sandy Spring Bancorp, Inc. ("Sandy Spring" or, together with its subsidiaries, the "Company"), a Maryland corporation, is the bank holding company for Sandy Spring Bank (the “Bank”). Independent and community-oriented, Sandy Spring Bank offers a broad range of commercial banking, retail banking, mortgage services and trust services throughout central Maryland, Northern Virginia, and the greater Washington, D.C. market. Sandy Spring Bank also offers a comprehensive menu of insurance and wealth management services through its subsidiaries, Sandy Spring Insurance Corporation (“Sandy Spring Insurance”), West Financial Services, Inc. (“West Financial”) and Rembert Pendleton Jackson (“RPJ”).

Basis of Presentation

The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America (“GAAP”), prevailing practices within the financial services industry for interim financial information and Rule 10-01 of Regulation S-X. Accordingly, the interim financial statements do not include all of the information and notes required for complete financial statements. The following summary of significant accounting policies of the Company is presented to assist the reader in understanding the financial and other data presented in this report. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for any future periods or for the year ending December 31, 2021. In the opinion of management, all adjustments necessary for a fair presentation of the results of the interim periods have been included. Certain reclassifications have been made to prior period amounts, as necessary, to conform to the current period presentation. The Company has evaluated subsequent events through the date of the issuance of its financial statements.

These statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s 2020 Annual Report on Form 10-K as filed with the Securities and Exchange Commission (“SEC”) on February 19, 2021. There have been no significant changes to any of the Company’s accounting policies as disclosed in the 2020 Annual Report on Form 10-K.

Principles of Consolidation

The unaudited Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiary, Sandy Spring Bank, and its subsidiaries, Sandy Spring Insurance, West Financial and RPJ. Consolidation has resulted in the elimination of all intercompany accounts and transactions. See Note 18 for more information on the Company’s segments and consolidation.

Use of Estimates

The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, in addition to affecting the reported amounts of revenues earned and expenses incurred during the reporting period. Actual results could differ from those estimates. Estimates that could change significantly relate to the provision for credit losses and the related allowance, potential impairment of goodwill or other intangible assets, valuation of investment securities and the determination of whether available-for-sale debt securities with fair values less than amortized costs are impaired and require an allowance for credit losses, valuation of other real estate owned, valuation of share based compensation, the assessment that a liability should be recognized with respect to any matters under litigation, the calculation of current and deferred income taxes, and the actuarial projections related to pension expense and the related liability.

Cash Flows

For purposes of reporting cash flows, cash and cash equivalents include cash and due from banks, federal funds sold and interest-bearing deposits with banks (items with stated original maturity of three months or less).

Revenue from Contracts with Customers

The Company’s revenue includes net interest income on financial instruments and non-interest income. Specific categories of revenue are presented in the Condensed Consolidated Statements of Income. Most of the Company’s revenue is not within the scope of Accounting Standard Codification (“ASC”) 606 – Revenue from Contracts with Customers. For revenue within the scope of ASC 606, the Company provides services to customers and has related performance obligations. The revenue from such services is recognized upon satisfaction of all contractual performance obligations. The following discusses key revenue streams within the scope of revenue recognition guidance.

Wealth Management Income

West Financial and RPJ provide comprehensive investment management and financial planning services. Wealth management income is comprised of income for providing trust, estate and investment management services. Trust services include acting as a trustee for corporate or personal trusts. Investment management services include investment management, record-keeping and reporting of security portfolios. Fees for these services are recognized based on a contractually-agreed fixed percentage applied to net assets under management at the end of each reporting period. The Company does not charge/recognize any performance-based fees.

Insurance Agency Commissions

Sandy Spring Insurance, a subsidiary of the Bank, performs the function of an insurance intermediary by introducing the policyholder and insurer and is compensated by a commission fee for placement of an insurance policy. Sandy Spring Insurance does not provide any captive management services or any claim handling services. Commission fees are set as a percentage of the premium for the insurance policy for which Sandy Spring Insurance is a producer. Sandy Spring Insurance recognizes revenue when the insurance policy has been contractually agreed to by the insurer and policyholder (at transaction date).

Service Charges on Deposit Accounts

Service charges on deposit accounts are earned on depository accounts for consumer and commercial account holders and include fees for account and overdraft services. Account services include fees for event-driven services and periodic account maintenance activities. An obligation for event-driven services is satisfied at the time of the event when service is delivered and revenue recognized as earned. Obligation for maintenance activities is satisfied over the course of each month and revenue is recognized at month end. The overdraft services obligation is satisfied at the time of the overdraft and revenue is recognized as earned.

Loan Financing Receivables

The Company’s financing receivables consist primarily of loans that are stated at their principal balance outstanding, net of any unearned income, acquisition fair value marks and deferred loan origination fees and costs. Interest income on loans is accrued at the contractual rate based on the principal balance outstanding. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.

Loans are considered past due or delinquent when the principal or interest due in accordance with the contractual terms of the loan agreement or any portion thereof remains unpaid after the due date of the scheduled payment. Immaterial shortfalls in payment amounts do not necessarily result in a loan being considered delinquent or past due. If any payments are past due and subsequent payments are resumed without payment of the delinquent amount, the loan shall continue to be considered past due. Whenever any loan is reported delinquent on a principal or interest payment or portion thereof, the amount reported as delinquent is the outstanding principal balance of the loan.

Loans, except for consumer installment loans, are placed into non-accrual status when any portion of the loan principal or interest becomes 90 days past due. Management may determine that certain circumstances warrant earlier discontinuance of interest accruals on specific loans if an evaluation of other relevant factors (such as bankruptcy, interruption of cash flows, etc.) indicates collection of amounts contractually due is unlikely. These loans are considered, collectively, to be non-performing loans. Consumer installment loans that are not secured by real estate are not placed on non-accrual, but are charged down to their net realizable value when they are four months past due. Loans designated as non-accrual have all previously accrued but unpaid interest reversed. Interest income is not recognized on non-accrual loans. All payments received on non-accrual loans are applied using a cost-recovery method to reduce the outstanding principal balance until the loan returns to accrual status. Loans may be returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Loans considered to be TDRs are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured collateral-dependent loans are individually assessed for allowance for credit losses and may either be in accruing or non-accruing status. Non-accruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category if the borrower is no longer experiencing financial difficulty, a re-underwriting event took place, and the revised loan terms of the subsequent restructuring agreement are considered to be consistent with terms that can be obtained in the market for loans with comparable credit risk.

Allowance for Credit Losses

The allowance for credit losses (“allowance” or “ACL”) represents an amount which, in management's judgment, is adequate to absorb the lifetime expected losses that may be sustained on outstanding loans at the balance sheet date based on the evaluation

of the size and current risk characteristics of the loan portfolio, past events, current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience. The allowance is measured and recorded upon the initial recognition of a financial asset. The allowance is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision or credit for credit losses, which is recorded as a current period expense.

Determination of the adequacy of the allowance is inherently complex and requires the use of significant and highly subjective estimates. The reasonableness of the allowance is reviewed periodically by the Risk Committee of the Board of Directors and formally approved quarterly by that same committee of the Board.

The Company’s methodology for estimating the allowance includes: (1) a collective quantified reserve that reflects the Company’s historical default and loss experience adjusted for expected economic conditions throughout a reasonable and supportable period and the Company’s prepayment and curtailment rates; (2) collective qualitative factors that consider concentrations of the loan portfolio, expected changes to the economic forecasts, large relationships, early delinquencies, and factors related to credit administration, including, among others, loan-to-value ratios, borrowers’ risk rating and credit score migrations; and (3) individual allowances on collateral-dependent loans where borrowers are experiencing financial difficulty or when the Company determines that the foreclosure is probable. The Company excludes accrued interest from the measurement of the allowance as the Company has a non-accrual policy to reverse any accrued, uncollected interest income as loans are moved to non-accrual status.

Loans are pooled into segments based on the similar risk characteristics of the underlying borrowers, in addition to consideration of collateral type, industry and business purpose of the loans. Portfolio segments used to estimate the allowance are the same as portfolio segments used for general credit risk management purposes. Refer to Note 4 for more details on the Company’s portfolio segments.

The Company applies two calculation methodologies to estimate the collective quantified component of the allowance: discounted cash flows method and weighted average remaining life method. Allowance estimates on commercial acquisition, development and construction (“AD&C”) and residential construction segments are based on the weighted average remaining life method. Allowance estimates on all other portfolio segments are based on the discounted cash flows method. Segments utilizing the discounted cash flows method are further sub-segmented into risk level pools, determined either by risk rating for commercial loans or Beacon Scores ranges for residential and consumer loans. To better manage risk and reasonably determine the sufficiency of reserves, this segregation allows the Company to monitor the allowance component applicable to higher risk loans separate from the remainder of the portfolio. Collective calculation methodologies utilize the Company’s historical default and loss experience adjusted for future economic forecasts. The reasonable and supportable forecast period represents a two-year economic outlook for the applicable economic variables. Following the end of the reasonable and supportable forecast period expected losses revert back to the historical mean over the next two years on a straight-line basis. Economic variables that have the most significant impact on the allowance include: unemployment rate, house price index and number of business bankruptcies. Contractual loan level cash flows within the discounted cash flows methodology are adjusted for the Company’s historical prepayment and curtailment rate experience.

The individual reserve assessment is applied to collateral dependent loans where borrowers are experiencing financial difficulty or when the Company determines that a foreclosure is probable. The determination of the fair value of the collateral depends on whether a repayment of the loan is expected to be from the sale or the operation of the collateral. When a repayment is expected from the operation of the collateral, the Company uses the present value of expected cash flows from the operation of the collateral as the fair value. When the repayment of the loan is expected from the sale of the collateral the fair value of the collateral is based on an observable market price or the collateral’s appraised value, less estimated costs to sell. Third party appraisals used in the individual reserve assessment are conducted at least annually with underlying assumptions that are reviewed by management. Third party appraisals may be obtained on a more frequent basis if deemed necessary. Internal evaluations of collateral value are conducted quarterly to ensure any further deterioration of the collateral value is recognized on a timely basis. During the individual reserve assessment, management also considers the potential future changes in the value of the collateral over the remainder of the loan’s remaining life. The Company may receive updated appraisals which contradict the preliminary determination of fair value used to establish an individual allowance on a loan. In these instances the individual allowance is adjusted to reflect the Company’s evaluation of the updated appraised fair value. In the event a loss was previously confirmed and the loan was charged down to the estimated fair value based on a previous appraisal, the balance of partially charged-off loans are not subsequently increased, but could be further decreased depending on the direction of the change in fair value. Payments on fully or partially charged-off loans are accounted for under the cost-recovery method. Under this method, all payments received are applied on a cash basis to reduce the entire outstanding principal balance, then to recognize a recovery of all previously charged-off amounts before any interest income may be recognized. Based on the individual reserve assessment, if the Company determines that the fair value of the collateral is less than the amortized cost basis of the loan, an individual allowance will be established measured as the difference between the fair value of the collateral

(less costs to sell) and the amortized cost basis of the loan. Once a loss has been confirmed, the loan is charged-down to its estimated fair value.

Large groups of smaller non-accrual homogeneous loans are not individually evaluated for allowance and include residential permanent and construction mortgages and consumer installment loans. These portfolios are reserved for on a collective basis using historical loss rates of similar loans over the weighted average life of each pool.

The Company reviews its unfunded commitments to determine if they are unconditionally cancellable by the Company. If the unfunded commitment is determined to not be unconditionally cancellable by the Company, a reserve for unfunded commitments is established. The reserve for unfunded commitments considers both the likelihood that the funding will occur and an estimate of expected credit losses over the life of the commitment.

Management believes it uses relevant information available to make determinations about the allowance and that it has established the existing allowance in accordance with GAAP. However, the determination of the allowance requires significant judgment, and estimates of expected lifetime losses in the loan portfolio can vary significantly from the amounts actually observed. While management uses available information to recognize expected losses, future additions to the allowance may be necessary based on changes in the loans comprising the portfolio, changes in the current and forecasted economic conditions, changes to the interest rate environment which may directly impact prepayment and curtailment rate assumptions, and changes in the financial condition of borrowers.

Acquired Loans

Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value. The allowance for credit losses related to the acquired loan portfolio is not carried over. Acquired loans are classified into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (“PCD”) loans, or loans with no evidence of credit deterioration (“non-PCD”).

PCD loans are defined as a loan or pool of loans that have experienced more-than-insignificant credit deterioration since the origination date. The Company uses a combination of individual and pooled review approaches to determine if acquired loans are PCD. At acquisition, the Company considers a number of factors to determine if an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors include:

•loans classified as non-accrual,

•loans with risk rating of special mention or worse (using the Company's risk rating scale),

•loans with multiple risk rating downgrades since origination,

•loans with evidence of being 60 days or more past due,

•loans previously modified in a troubled debt restructuring,

•loans that received an interest only or payment deferral modification, and

•loans in industries that show evidence of additional risk due to economic conditions.

The initial allowance related to PCD loans that share similar risk characteristics is established using a pooled approach. The Company uses either a discounted cash flow or weighted average remaining life method to determine the required level of the allowance. PCD loans that were classified as non-accrual as of the acquisition date and are collateral dependent are assessed for allowance on an individual basis.

For PCD loans, an initial allowance is established on the acquisition date and added to the fair value of the loan to arrive at acquisition date amortized cost. Accordingly, no provision for credit losses is recognized on PCD loans at the acquisition date. Subsequent to the acquisition date, the initial allowance on PCD loans will increase or decrease based on future evaluations, with changes recognized in the provision for credit losses.

Non-PCD loans are pooled into segments together with originated loans that share similar risk characteristics and have an allowance established on the acquisition date, which is recognized in the current period provision for credit losses.

Determining the fair value of the acquired loans involves estimating the principal and interest payment cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life, interest rate profile, market interest rate environment, payment schedules, risk ratings, probability of default and loss given default, and estimated prepayment rates. For PCD loans, the non-credit discount or premium is allocated to individual loans as determined by the difference between the loan’s unpaid principal balance and amortized cost basis. The non-credit premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan. For non-PCD loans, the fair value discount or premium is

allocated to individual loans and recognized into interest income on a level yield basis over the remaining expected life of the loan.

Leases

The Company determines if an arrangement is a lease at inception. All of the Company’s leases are currently classified as operating leases and are included in other assets and other liabilities on the Company’s Condensed Consolidated Statements of Condition.

Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease arrangements. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of the expected future lease payments over the remaining lease term. In determining the present value of future lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The operating ROU assets are adjusted for any lease payments made at or before the lease commencement date, initial direct costs, any lease incentives received and, for acquired leases, any favorable or unfavorable fair value adjustments. The present value of the lease liability may include the impact of options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options provided in the lease terms. Lease expense is recognized on a straight-line basis over the expected lease term. Lease agreements that include lease and non-lease components, such as common area maintenance charges, are accounted for separately.

Pending Accounting Pronouncements

In March 2020, FASB released Accounting Standards Update (“ASU”) 2020-04 - Reference Rate Reform (Topic 848), which provides optional guidance to ease the accounting burden in accounting for, or recognizing the effects from, reference rate reform on financial reporting. The new standard is a result of LIBOR likely being discontinued as an available benchmark rate. The standard is elective and provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, or other transactions that reference LIBOR, or another reference rate expected to be discontinued. The amendments in the update are effective for all entities between March 12, 2020 and December 31, 2022. The Company has established a cross-functional working group to guide the Company’s transition from LIBOR and has begun efforts to transition to alternative rates consistent with industry timelines. The Company has identified its products that utilize LIBOR and has implemented enhanced fallback language to facilitate the transition to alternative reference rates. The Company is evaluating existing platforms and systems and preparing to offer new rates.

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ACQUISITION OF REVERE BANK

3 Months Ended

Mar. 31, 2021

Business Combinations [Abstract]

ACQUISITION OF REVERE BANK

ACQUISITION OF REVERE BANK

On April 1, 2020 (“Acquisition Date”), the Company completed the acquisition of Revere Bank (“Revere”), a Maryland chartered commercial bank, in accordance with the definitive agreement that was entered on September 23, 2019 by and among the Company, the Bank and Revere. In connection with the completion of the merger, former Revere shareholders received 1.05 shares of Sandy Spring common stock for each share of Revere common stock they held. Based on the $22.64 per share closing price of Sandy Spring common stock on March 31, 2020, and including the fair value of options converted or cashed-out, the total transaction value was approximately $293.0 million. Upon completion of the acquisition, Sandy Spring shareholders owned approximately 74 percent of the combined company, and former Revere shareholders owned approximately 26 percent.

As of March 31, 2020, Revere, headquartered in Rockville, MD, had more than $2.8 billion in assets and operated 11 full-service community banking offices throughout the Washington D.C. metropolitan region.

The acquisition of Revere was accounted for as a business combination using the acquisition method of accounting and, accordingly, assets acquired, liabilities assumed, and consideration paid were recorded at estimated fair values on the Acquisition Date. The amount of goodwill recognized as of the Acquisition Date was approximately $0.8 million. After immaterial adjustments recorded during the fourth quarter of 2020, the amount of goodwill recognized as of December 31, 2021 was $0.5 million. Management's final review of assets acquired and liabilities assumed did not result in additional adjustments during the first quarter of 2021, and goodwill was determined to be final as of March 31, 2021. The goodwill is not deductible for tax purposes.

The consideration paid for Revere’s common equity and outstanding stock options and the provisional fair values of acquired identifiable assets and assumed identifiable liabilities as of March 31, 2021 were as follows:

(Dollars in thousands, except per share data)	March 31, 2021
Purchase price:
Fair value of common shares issued (12,768,949 shares) based on Sandy Spring's share price of $22.64	$	289,089
Fair value of Revere stock options converted to Sandy Spring stock options	3,611
Cash paid for cashed-out Revere stock options	291
Cash for fractional shares	11
Total purchase price	$	293,002
Identifiable assets:
Cash and cash equivalents	$	80,744
Investments available-for-sale	180,752
Loans	2,502,244
Premises and equipment	3,443
Accrued interest receivable	7,651
Core deposit intangible asset	18,360
Other assets	53,162
Total identifiable assets	$	2,846,356
Identifiable liabilities:
Deposits	$	2,322,422
Borrowings	205,514
Other liabilities	25,933
Total identifiable liabilities	$	2,553,869
Fair value of net assets acquired including identifiable intangible assets	292,487
Goodwill	$	515

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INVESTMENTS

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

INVESTMENTS

INVESTMENTS

Investments available-for-sale

The amortized cost and estimated fair values of investments available-for-sale at the dates indicated are presented in the following table:

	March 31, 2021								December 31, 2020
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. treasuries and government agencies	$	47,641	$	447	$	(2)	$	48,086	$	42,750	$	549	$	(2)	$	43,297
State and municipal	362,815		7,926		(4,709)		366,032		377,108		13,470		(211)		390,367
Mortgage-backed and asset-backed	1,001,475		15,222		(10,518)		1,006,179		881,201		24,078		(847)		904,432
Corporate debt	7,000		583		—		7,583		9,100		825		—		9,925
Total investments available-for-sale	$	1,418,931	$	24,178	$	(15,229)	$	1,427,880	$	1,310,159	$	38,922	$	(1,060)	$	1,348,021

Any unrealized losses in the U.S. treasuries and government agencies, state and municipal, mortgage-backed and asset-backed investment securities at March 31, 2021 are due to changes in interest rates and not credit-related events. As such, no allowance for credit losses is required at March 31, 2021. Unrealized losses on investment securities are expected to recover over time as these securities approach maturity. The Company does not intend to sell, nor is it more likely than not it will be required to sell, these securities and has sufficient liquidity to hold these securities for an adequate period of time, which may be maturity, to allow for any anticipated recovery in fair value.

The mortgage-backed securities portfolio at March 31, 2021 is composed entirely of either the most senior tranches of GNMA, FNMA or FHLMC collateralized mortgage obligations ($318.5 million), GNMA, FNMA or FHLMC mortgage-backed securities ($626.0 million) or SBA asset-backed securities ($61.7 million).

Gross unrealized losses and fair value by length of time that the individual available-for-sale securities have been in an unrealized loss position at the dates indicated are presented in the following tables:

	March 31, 2021
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	1	$	4,972	$	2	$	—	$	—	$	4,972	$	2
State and municipal	43	115,530		4,709		—		—		115,530		4,709
Mortgage-backed and asset-backed	46	373,235		10,509		4,968		9		378,203		10,518
Total	90	$	493,737	$	15,220	$	4,968	$	9	$	498,705	$	15,229

	December 31, 2020
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	2	$	25,369	$	2	$	—	$	—	$	25,369	$	2
State and municipal	8	22,753		211		—		—		22,753		211
Mortgage-backed and asset-backed	24	44,746		154		76,879		693		121,625		847
Total	34	$	92,868	$	367	$	76,879	$	693	$	169,747	$	1,060

The estimated fair values and amortized costs of debt securities available-for-sale by contractual maturity at the dates indicated are provided in the following table. The Company has allocated mortgage-backed securities into the four maturity groupings reflected in the following tables using the expected average life of the individual securities based on statistics provided by independent third party industry sources. Expected maturities will differ from contractual maturities as borrowers may have the right to prepay obligations with or without prepayment penalties.

	March 31, 2021				December 31, 2020
(In thousands)	Fair Value		Amortized Cost		Fair Value		Amortized Cost
U.S. treasuries and government agencies:
One year or less	$	36,904	$	36,744	$	33,963	$	33,833
One to five years	11,182		10,897		9,334		8,917
Five to ten years	—		—		—		—
After ten years	—		—		—		—
State and municipal:
One year or less	13,175		13,098		16,581		16,458
One to five years	38,077		36,965		44,910		43,857
Five to ten years	49,417		47,569		59,059		56,130
After ten years	265,363		265,183		269,817		260,663
Mortgage-backed and asset-backed:
One year or less	1,923		1,905		1		1
One to five years	20,180		19,822		21,637		21,229
Five to ten years	67,401		66,718		74,142		72,481
After ten years	916,675		913,030		808,652		787,490
Corporate debt:
One year or less	—		—		—		—
One to five years	—		—		2,318		2,100
Five to ten years	7,583		7,000		7,607		7,000
After ten years	—		—		—		—
Total available-for-sale debt securities	$	1,427,880	$	1,418,931	$	1,348,021	$	1,310,159

At March 31, 2021 and December 31, 2020, investments available-for-sale with a book value of $454.0 million and $465.7 million, respectively, were pledged as collateral for certain government deposits and for other purposes as required or permitted by law. The outstanding balance of no single issuer, except for U.S. Agencies securities, exceeded ten percent of stockholders' equity at March 31, 2021 and December 31, 2020.

Equity securities

Other equity securities at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Federal Reserve Bank stock	$	34,028	$	38,650
Federal Home Loan Bank of Atlanta stock	10,142		26,433
Marketable equity securities	677		677
Total equity securities	$	44,847	$	65,760

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LOANS

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

LOANS

LOANS

Outstanding loan balances at March 31, 2021 and December 31, 2020, are net of unearned income, including net deferred loan fees of $30.3 million and $24.5 million, respectively. Net deferred loan fees at March 31, 2021 and December 31, 2020, includes $27.0 million and $21.2 million, respectively, related to the loans originated under the Paycheck Protection Program (“PPP”).

The loan portfolio segment balances at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Commercial real estate:
Commercial investor real estate	$	3,652,418	$	3,634,720
Commercial owner-occupied real estate	1,644,848		1,642,216
Commercial AD&C	1,051,013		1,050,973
Commercial business	2,411,109		2,267,548
Total commercial loans	8,759,388		8,595,457
Residential real estate:
Residential mortgage	1,022,546		1,105,179
Residential construction	171,028		182,619
Consumer	493,904		517,254
Total residential and consumer loans	1,687,478		1,805,052
Total loans	$	10,446,866	$	10,400,509

Portfolio Segments

The Company currently manages its credit products and the respective exposure to credit losses (credit risk) by the following specific portfolio segments (classes) which are levels at which the Company develops and documents its systematic methodology to determine the allowance for credit losses attributable to each respective portfolio segment. These segments are:

•Commercial investor real estate loans - Commercial investor real estate loans consist of loans secured by nonowner-occupied properties where an established banking relationship exists and involves investment properties for warehouse, retail, and office space with a history of occupancy and cash flow. This commercial investor real estate category contains mortgage loans to the developers and owners of commercial real estate where the borrower intends to operate or sell the property at a profit and use the income stream or proceeds from the sale(s) to repay the loan.

•Commercial owner-occupied real estate loans - Commercial owner-occupied real estate loans consist of commercial mortgage loans secured by owner occupied properties where an established banking relationship exists and involves a variety of property types to conduct the borrower’s operations. The decision to extend a loan is based upon the borrower’s financial health and the ability of the borrower and the business to repay. The primary source of repayment for this type of loan is the cash flow from the operations of the business.

•Commercial acquisition, development and construction loans - Commercial acquisition, development and construction loans are intended to finance the construction of commercial properties and include loans for the

acquisition and development of land. Construction loans represent a higher degree of risk than permanent real estate loans and may be affected by a variety of additional factors such as the borrower’s ability to control costs and adhere to time schedules and the risk that constructed units may not be absorbed by the market within the anticipated time frame or at the anticipated price. The loan commitment on these loans often includes an interest reserve that allows the lender to periodically advance loan funds to pay interest charges on the outstanding balance of the loan.

•Commercial business loans - Commercial loans are made to provide funds for equipment and general corporate needs. Repayment of a loan primarily comes from the funds obtained from the operation of the borrower’s business. Commercial loans also include lines of credit that are utilized to finance a borrower’s short-term credit needs and/or to finance a percentage of eligible receivables and inventory. Loans issued under the PPP are also included in this category, a substantial portion of which are expected to be forgiven by the Small Business Administration pursuant to the CARES Act.

•Residential mortgage loans - The residential mortgage loans category contains permanent mortgage loans principally to consumers secured by residential real estate. Residential real estate loans are evaluated for the adequacy of repayment sources at the time of approval, based upon measures including credit scores, debt-to-income ratios, and collateral values. Loans may be either conforming or non-conforming.

•Residential construction loans - The Company makes residential construction loans generally to provide interim financing on residential property during the construction period. Borrowers are typically individuals who will ultimately occupy the single-family dwelling. Loan funds are disbursed periodically as pre-specified stages of completion are attained based upon site inspections.

•Consumer loans - This category of loans includes primarily home equity loans and lines, installment loans, personal lines of credit, and other loans. The home equity category consists mainly of revolving lines of credit to consumers which are secured by residential real estate. These loans are typically secured with second mortgages on the homes. Other consumer loans include installment loans used by customers to purchase automobiles, boats and recreational vehicles.

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CREDIT QUALITY ASSESSMENT

3 Months Ended

Mar. 31, 2021

Credit Loss [Abstract]

CREDIT QUALITY ASSESSMENT

CREDIT QUALITY ASSESSMENT

Allowance for Credit Losses

Summary information on the allowance for credit loss activity for the period indicated is provided in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Balance at beginning of period	$	165,367	$	56,132
Initial allowance on PCD loans at adoption of ASC 326	—		2,762
Transition impact of adopting ASC 326	—		2,983
Provision for credit losses	(34,708)		24,469
Loan charge-offs	(743)		(654)
Loan recoveries	445		108
Net charge-offs	(298)		(546)
Balance at period end	$	130,361	$	85,800

The following table provides summary information regarding collateral dependent loans individually evaluated for credit loss at the dates indicated:

(In thousands)	March 31, 2021		December 31, 2020
Collateral dependent loans individually evaluated for credit loss with an allowance	$	32,241	$	20,717
Collateral dependent loans individually evaluated for credit loss without an allowance	49,757		77,001
Total individually evaluated collateral dependent loans	$	81,998	$	97,718
Allowance for credit losses related to loans evaluated individually	$	13,101	$	11,405
Allowance for credit losses related to loans evaluated collectively	117,260		153,962
Total allowance for credit losses	$	130,361	$	165,367

The following tables provide information on the activity in the allowance for credit losses by the respective loan portfolio segment for the period indicated:

 

	For the Three Months Ended March 31, 2021
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Provision for credit losses	(8,981)			(5,594)			760			(14,343)			(4,018)			(849)			(1,683)			(34,708)
Charge-offs	—			—			—			(650)			—			—			(93)			(743)
Recoveries	27			—			—			16			270			—			132			445
Net recoveries (charge-offs)	27			—			—			(634)			270			—			39			(298)
Balance at end of period	$	48,450		$	14,467		$	22,917		$	31,829		$	7,547		$	653		$	4,498		$	130,361
Total loans	$	3,652,418		$	1,644,848		$	1,051,013		$	2,411,109		$	1,022,546		$	171,028		$	493,904		$	10,446,866
Allowance for credit losses to total loans ratio	1.33		%	0.88		%	2.18		%	1.32		%	0.74		%	0.38		%	0.91		%	1.25		%
Balance of loans individually evaluated for credit loss	$	42,776		$	8,316		$	14,975		$	13,831		$	1,737		$	—		$	363		$	81,998
Allowance related to loans evaluated individually	$	2,988		$	—		$	603		$	9,510		$	—		$	—		$	—		$	13,101
Individual allowance to loans evaluated individually ratio	6.99		%	—		%	4.03		%	68.76		%	—		%	—		%	—		%	15.98		%
Balance of loans collectively evaluated for credit loss	$	3,609,642		$	1,636,532		$	1,036,038		$	2,397,278		$	1,020,809		$	171,028		$	493,541		$	10,364,868
Allowance related to loans evaluated collectively	$	45,462		$	14,467		$	22,314		$	22,319		$	7,547		$	653		$	4,498		$	117,260
Collective allowance to loans evaluated collectively ratio	1.26		%	0.88		%	2.15		%	0.93		%	0.74		%	0.38		%	0.91		%	1.13		%

	For the Year Ended December 31, 2020
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	18,407		$	6,884		$	7,590		$	11,395		$	8,803		$	967		$	2,086		$	56,132
Initial allowance on PCD loans at adoption of ASC 326	1,114			—			—			1,549			—			—			99			2,762
Transition impact of adopting ASC 326	(3,125)			387			2,576			2,988			(388)			(275)			820			2,983
Initial allowance on acquired Revere PCD loans	7,973			2,782			1,248			6,289			243			6			87			18,628
Provision for credit losses	33,431			10,008			10,743			24,374			3,016			798			3,299			85,669
Charge-offs	(411)			—			—			(491)			(484)			—			(433)			(1,819)
Recoveries	15			—			—			702			105			6			184			1,012
Net recoveries (charge-offs)	(396)			—			—			211			(379)			6			(249)			(807)
Balance at end of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Total loans	$	3,634,720		$	1,642,216		$	1,050,973		$	2,267,548		$	1,105,179		$	182,619		$	517,254		$	10,400,509
Allowance for credit losses to total loans ratio	1.58		%	1.22		%	2.11		%	2.06		%	1.02		%	0.82		%	1.19		%	1.59		%
Balance of loans individually evaluated for credit loss	$	45,227		$	11,561		$	15,044		$	23,648		$	1,874		$	—		$	364		$	97,718
Allowance related to loans evaluated individually	$	1,273		$	—		$	603		$	9,529		$	—		$	—		$	—		$	11,405
Individual allowance to loans evaluated individually ratio	2.81		%	—		%	4.01		%	40.30		%	—		%	—		%	—		%	11.67		%
Balance of loans collectively evaluated for credit loss	$	3,589,493		$	1,630,655		$	1,035,929		$	2,243,900		$	1,103,305		$	182,619		$	516,890		$	10,302,791
Allowance related to loans evaluated collectively	$	56,131		$	20,061		$	21,554		$	37,277		$	11,295		$	1,502		$	6,142		$	153,962
Collective allowance to loans evaluated collectively ratio	1.56		%	1.23		%	2.08		%	1.66		%	1.02		%	0.82		%	1.19		%	1.49		%

The following tables present collateral dependent loans individually evaluated for credit loss with the associated allowances for credit losses by the applicable portfolio segment and for the periods indicated:

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	17,686	$	—	$	1,446	$	9,730	$	—	$	—	$	—	$	28,862
Restructured accruing	—		—		—		573		—		—		—		573
Restructured non-accruing	336		—		—		2,470		—		—		—		2,806
Balance	$	18,022	$	—	$	1,446	$	12,773	$	—	$	—	$	—	$	32,241
Allowance	$	2,988	$	—	$	603	$	9,510	$	—	$	—	$	—	$	13,101
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	24,754	$	6,125	$	13,529	$	318	$	—	$	—	$	—	$	44,726
Restructured accruing	—		—		—		111		1,587		—		—		1,698
Restructured non-accruing	—		2,191		—		629		150		—		363		3,333
Balance	$	24,754	$	8,316	$	13,529	$	1,058	$	1,737	$	—	$	363	$	49,757
Total individually evaluated loans:
Non-accruing	$	42,440	$	6,125	$	14,975	$	10,048	$	—	$	—	$	—	$	73,588
Restructured accruing	—		—		—		684		1,587		—		—		2,271
Restructured non-accruing	336		2,191		—		3,099		150		—		363		6,139
Balance	$	42,776	$	8,316	$	14,975	$	13,831	$	1,737	$	—	$	363	$	81,998
Total unpaid contractual principal balance	$	47,547	$	10,306	$	16,157	$	16,088	$	2,814	$	—	$	364	$	93,276

	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	4,913	$	—	$	1,328	$	11,178	$	—	$	—	$	—	$	17,419
Restructured accruing	—		—		—		589		—		—		—		589
Restructured non-accruing	699		—		—		2,010		—		—		—		2,709
Balance	$	5,612	$	—	$	1,328	$	13,777	$	—	$	—	$	—	$	20,717
Allowance	$	1,273	$	—	$	603	$	9,529	$	—	$	—	$	—	$	11,405
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	39,615	$	9,315	$	13,716	$	9,118	$	—	$	—	$	—	$	71,764
Restructured accruing	—		—		—		126		1,602		—		—		1,728
Restructured non-accruing	—		2,246		—		627		272		—		364		3,509
Balance	$	39,615	$	11,561	$	13,716	$	9,871	$	1,874	$	—	$	364	$	77,001
Total individually evaluated loans:
Non-accruing	$	44,528	$	9,315	$	15,044	$	20,296	$	—	$	—	$	—	$	89,183
Restructured accruing	—		—		—		715		1,602		—		—		2,317
Restructured non-accruing	699		2,246		—		2,637		272		—		364		6,218
Balance	$	45,227	$	11,561	$	15,044	$	23,648	$	1,874	$	—	$	364	$	97,718
Total unpaid contractual principal balance	$	49,920	$	15,309	$	16,040	$	30,958	$	3,225	$	—	$	364	$	115,816

The following tables present average principal balance of total non-accrual loans and contractual interest due on non-accrual loans for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	44,002	$	9,939	$	15,010	$	18,040	$	9,903	$	—	$	7,289	$	104,183
Contractual interest income due on non- accrual loans during the period	$	649	$	185	$	256	$	428	$	110	$	—	$	104	$	1,732

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	26,849	$	6,605	$	4,267	$	16,532	$	11,634	$	—	$	6,675	$	72,562
Contractual interest income due on non- accrual loans during the period	$	6,547	$	2,741	$	4,505	$	2,858	$	918	$	—	$	732	$	18,301

There was no interest income recognized on non-accrual loans during the three months ended March 31, 2021. See Note 1 for additional information on the Company's policies for non-accrual loans. Loans designated as non-accrual have all previously accrued but unpaid interest reversed from interest income. During the three months ended March 31, 2021 new loans placed on non-accrual status totaled $0.4 million and the related amount of reversed uncollected accrued interest was insignificant.

Credit Quality

The following section provides information on the credit quality of the loan portfolio for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361
Loans placed on non-accrual	—		—		—		84		140		—		197		421
Non-accrual balances transferred to OREO	—		—		—		—		—		—		—		—
Non-accrual balances charged-off	—		—		—		(650)		—		—		(49)		(699)
Net payments or draws	(2,451)		(3,245)		(69)		(9,220)		(759)		—		(284)		(16,028)
Non-accrual loans brought current	—		—		—		—		—		—		(55)		(55)
Balance at end of period	$	42,776	$	8,316	$	14,975	$	13,147	$	9,593	$	—	$	7,193	$	96,000

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	8,437	$	4,148	$	829	$	8,450	$	12,661	$	—	$	4,107	$	38,632
PCD loans designated as non-accrual (1)	9,544		—		—		2,539		8		—		993		13,084
Loans placed on non-accrual	37,882		8,572		15,844		17,442		1,485		—		4,061		85,286
Non-accrual balances transferred to OREO	—		—		—		—		(70)		—		—		(70)
Non-accrual balances charged-off	(411)		—		—		(446)		(416)		—		(121)		(1,394)
Net payments or draws	(10,225)		(1,059)		(1,629)		(4,169)		(2,598)		—		(1,521)		(21,201)
Non-accrual loans brought current	—		(100)		—		(883)		(858)		—		(135)		(1,976)
Balance at end of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361

(1)Upon the adoption of the CECL standard, the Company transitioned from closed pool level accounting for PCI loans during the first quarter of 2020. Non-accrual loans are determined based on the individual loan level and aggregated for reporting.

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,587,859	$	1,633,446	$	1,031,055	$	2,392,818	$	997,837	$	170,365	$	483,280	$	10,296,660
30-59 days	17,870		3,086		4,983		3,983		9,593		601		1,809		41,925
60-89 days	3,913		—		—		446		3,538		62		1,622		9,581
Total performing loans	3,609,642		1,636,532		1,036,038		2,397,247		1,010,968		171,028		486,711		10,348,166
Non-performing loans:
Non-accrual loans	42,776		8,316		14,975		13,147		9,593		—		7,193		96,000
Loans greater than 90 days past due	—		—		—		31		398		—		—		429
Restructured loans	—		—		—		684		1,587		—		—		2,271
Total non-performing loans	42,776		8,316		14,975		13,862		11,578		—		7,193		98,700
Total loans	$	3,652,418	$	1,644,848	$	1,051,013	$	2,411,109	$	1,022,546	$	171,028	$	493,904	$	10,446,866

	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,571,184	$	1,624,265	$	1,033,057	$	2,238,617	$	1,073,963	$	182,557	$	502,548	$	10,226,191
30-59 days	14,046		6,390		29		4,859		16,213		—		5,275		46,812
60-89 days	4,130		—		2,843		263		2,709		62		2,047		12,054
Total performing loans	3,589,360		1,630,655		1,035,929		2,243,739		1,092,885		182,619		509,870		10,285,057
Non-performing loans:
Non-accrual loans	45,227		11,561		15,044		22,933		10,212		—		7,384		112,361
Loans greater than 90 days past due	133		—		—		161		480		—		—		774
Restructured loans	—		—		—		715		1,602		—		—		2,317
Total non-performing loans	45,360		11,561		15,044		23,809		12,294		—		7,384		115,452
Total loans	$	3,634,720	$	1,642,216	$	1,050,973	$	2,267,548	$	1,105,179	$	182,619	$	517,254	$	10,400,509

The credit quality indicators for commercial loans are developed through review of individual borrowers on an ongoing basis. Each borrower is evaluated at least annually with more frequent evaluation of more severely criticized loans. The indicators represent the rating for loans as of the date presented is based on the most recent credit review performed. These credit quality indicators are defined as follows:

Pass - A pass rated credit is not adversely classified because it does not display any of the characteristics for adverse classification.

Special mention – A special mention credit has potential weaknesses that deserve management’s close attention. If uncorrected, such weaknesses may result in deterioration of the repayment prospects or collateral position at some future date. Special mention assets are not adversely classified and do not warrant adverse classification.

Substandard – A substandard loan is inadequately protected by the current net worth and payment capacity of the obligor or of the collateral pledged, if any. Loans classified as substandard generally have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. These loans are characterized by the distinct possibility of loss if the deficiencies are not corrected.

Doubtful – A loan that is classified as doubtful has all the weaknesses inherent in a loan classified as substandard with added characteristics that the weaknesses make collection or liquidation in full highly questionable and improbable, on the basis of currently existing facts, conditions and values.

Loss – Loans classified as a loss are considered uncollectible and of such little value that their continuing to be carried as a loan is not warranted. This classification is not necessarily equivalent to no potential for recovery or salvage value, but rather that it is not appropriate to defer a full write-off even though partial recovery may be effected in the future.

The following table provides information about credit quality indicators by the year of origination as of March 31, 2021:

	March 31, 2021
	Term Loans by Origination Year												Revolving
(In thousands)	2021		2020		2019		2018		2017		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	194,465	$	881,973	$	707,450	$	452,909	$	429,839	$	876,375	$	28,844	$	3,571,855
Special Mention	10,000		527		1,993		2,640		701		2,646		—		18,507
Substandard	279		437		6,175		13,555		28,149		13,461		—		62,056
Doubtful	—		—		—		—		—		—		—		—
Total	$	204,744	$	882,937	$	715,618	$	469,104	$	458,689	$	892,482	$	28,844	$	3,652,418
Commercial Owner-Occupied R/E:
Pass	$	47,661	$	287,070	$	375,951	$	222,539	$	188,795	$	485,151	$	4,793	$	1,611,960
Special Mention	—		1,871		4,327		3,586		4,698		5,279		—		19,761
Substandard	—		1,269		4,316		2,031		447		5,064		—		13,127
Doubtful	—		—		—		—		—		—		—		—
Total	$	47,661	$	290,210	$	384,594	$	228,156	$	193,940	$	495,494	$	4,793	$	1,644,848
Commercial AD&C:
Pass	$	174,120	$	373,158	$	244,751	$	110,557	$	47,150	$	—	$	80,645	$	1,030,381
Special Mention	639		1,073		—		—		—		—		—		1,712
Substandard	1,102		455		891		—		13,629		2,843		—		18,920
Doubtful	—		—		—		—		—		—		—		—
Total	$	175,861	$	374,686	$	245,642	$	110,557	$	60,779	$	2,843	$	80,645	$	1,051,013
Commercial Business:
Pass	$	459,815	$	1,059,494	$	179,214	$	129,096	$	77,302	$	71,681	$	396,258	$	2,372,860
Special Mention	—		2,043		8,793		1,063		1,214		845		3,792		17,750
Substandard	225		4,785		3,494		3,338		857		6,019		1,781		20,499
Doubtful	—		—		—		—		—		—		—		—
Total	$	460,040	$	1,066,322	$	191,501	$	133,497	$	79,373	$	78,545	$	401,831	$	2,411,109
Residential Mortgage:
Beacon score:
660-850	$	43,362	$	209,544	$	66,700	$	113,850	$	153,972	$	336,256	$	—	$	923,684
600-659	745		4,962		9,539		8,498		8,044		25,851		—		57,639
540-599	—		1,445		1,181		5,063		1,930		14,187		—		23,806
less than 540	497		2,318		1,545		3,182		1,118		8,757		—		17,417
Total	$	44,604	$	218,269	$	78,965	$	130,593	$	165,064	$	385,051	$	—	$	1,022,546
Residential Construction:
Beacon score:
660-850	$	27,097	$	101,290	$	21,059	$	14,166	$	1,248	$	1,738	$	364	$	166,962
600-659	—		—		2,743		—		—		369		—		3,112
540-599	—		—		—		—		—		—		—		—
less than 540	—		954		—		—		—		—		—		954
Total	$	27,097	$	102,244	$	23,802	$	14,166	$	1,248	$	2,107	$	364	$	171,028
Consumer:
Beacon score:
660-850	$	1,054	$	2,200	$	4,263	$	4,213	$	1,567	$	27,406	$	400,050	$	440,753
600-659	247		265		1,138		484		259		6,092		17,590		26,075
540-599	—		105		564		272		270		3,425		6,938		11,574
less than 540	103		729		151		569		765		3,277		9,908		15,502
Total	$	1,404	$	3,299	$	6,116	$	5,538	$	2,861	$	40,200	$	434,486	$	493,904
Total loans	$	961,411	$	2,937,967	$	1,646,238	$	1,091,611	$	961,954	$	1,896,722	$	950,963	$	10,446,866

 The following table provides information about credit quality indicators by the year of origination as of December 31, 2020:

	December 31, 2020
	Term Loans by Origination Year												Revolving
(In thousands)	2020		2019		2018		2017		2016		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	910,426	$	763,214	$	448,406	$	448,698	$	469,077	$	498,384	$	33,531	$	3,571,736
Special Mention	11,044		—		4,879		833		269		27		—		17,052
Substandard	589		4,245		13,649		20,619		673		6,157		—		45,932
Doubtful	—		—		—		—		—		—		—		—
Total	$	922,059	$	767,459	$	466,934	$	470,150	$	470,019	$	504,568	$	33,531	$	3,634,720
Commercial Owner-Occupied R/E:
Pass	$	285,310	$	385,058	$	234,578	$	192,634	$	204,925	$	306,840	$	1,664	$	1,611,009
Special Mention	2,290		—		3,027		4,742		134		4,079		—		14,272
Substandard	1,610		4,335		2,065		465		219		8,009		—		16,703
Doubtful	—		—		—		—		—		232		—		232
Total	$	289,210	$	389,393	$	239,670	$	197,841	$	205,278	$	319,160	$	1,664	$	1,642,216
Commercial AD&C:
Pass	$	485,631	$	261,537	$	149,703	$	50,192	$	89	$	2,357	$	80,764	$	1,030,273
Special Mention	1,711		—		—		—		—		—		—		1,711
Substandard	1,439		891		—		13,816		2,843		—		—		18,989
Doubtful	—		—		—		—		—		—		—		—
Total	$	488,781	$	262,428	$	149,703	$	64,008	$	2,932	$	2,357	$	80,764	$	1,050,973
Commercial Business:
Pass	$	1,244,822	$	208,682	$	138,861	$	86,830	$	34,498	$	81,760	$	433,016	$	2,228,469
Special Mention	1,929		1,382		1,119		708		309		621		4,319		10,387
Substandard	2,914		4,564		3,519		1,631		2,745		3,456		1,829		20,658
Doubtful	106		995		849		36		1,284		1,852		2,912		8,034
Total	$	1,249,771	$	215,623	$	144,348	$	89,205	$	38,836	$	87,689	$	442,076	$	2,267,548
Residential Mortgage:
Beacon score:
660-850	$	229,033	$	74,054	$	138,824	$	172,493	$	129,701	$	251,065	$	—	$	995,170
600-659	4,824		7,706		10,763		11,719		8,173		21,424		—		64,609
540-599	350		1,238		5,219		2,608		4,791		10,167		—		24,373
less than 540	2,702		2,108		3,576		2,150		892		9,599		—		21,027
Total	$	236,909	$	85,106	$	158,382	$	188,970	$	143,557	$	292,255	$	—	$	1,105,179
Residential Construction:
Beacon score:
660-850	$	112,604	$	44,647	$	14,543	$	2,805	$	1,693	$	—	$	172	$	176,464
600-659	1,743		3,189		—		—		—		—		—		4,932
540-599	—		—		—		—		369		—		—		369
less than 540	854		—		—		—		—		—		—		854
Total	$	115,201	$	47,836	$	14,543	$	2,805	$	2,062	$	—	$	172	$	182,619
Consumer:
Beacon score:
660-850	$	2,575	$	4,609	$	5,112	$	2,110	$	2,614	$	24,444	$	417,737	$	459,201
600-659	374		445		334		428		467		5,401		21,052		28,501
540-599	89		1,216		294		339		601		3,926		6,153		12,618
less than 540	751		160		525		785		532		2,826		11,355		16,934
Total	$	3,789	$	6,430	$	6,265	$	3,662	$	4,214	$	36,597	$	456,297	$	517,254
Total loans	$	3,305,720	$	1,774,275	$	1,179,845	$	1,016,641	$	866,898	$	1,242,626	$	1,014,504	$	10,400,509

The following table provides the amounts of the restructured loans at the date of restructuring for specific segments of the loan portfolio during the period indicated:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	—	$	—	$	—
Restructured non-accruing	—		—		—		512		—		512
Balance	$	—	$	—	$	—	$	512	$	—	$	512
Individual allowance	$	—	$	—	$	—	$	332	$	—	$	332
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

	For the Year Ended December 31, 2020
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	380	$	549	$	929
Restructured non-accruing	723		930		—		1,951		—		3,604
Balance	$	723	$	930	$	—	$	2,331	$	549	$	4,533
Individual allowance	$	65	$	—	$	—	$	955	$	—	$	1,020
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

During the three months ended March 31, 2021, the Company restructured $0.5 million in loans that were designated as TDRs. TDR loans are subject to periodic credit reviews to determine the necessity and appropriateness of an individual credit loss allowance based on the collectability of the recorded investment in the TDR loan. Loans restructured as TDRs during the three months ended March 31, 2021 had individual reserves of $0.3 million. For the year ended December 31, 2020, the Company restructured $4.5 million in loans. Loans restructured as TDRs during 2020 had individual reserves of $1.0 million at December 31, 2020. During both the three months ended March 31, 2021 and for the year ended December 31, 2020 TDR modifications consisted principally of interest rate concessions, and did not result in the reduction of the recorded investment in the associated loan balances. The commitments to lend additional funds on loans that have been restructured at March 31, 2021 and December 31, 2020 were not significant.

Other Real Estate Owned

Other real estate owned ("OREO") totaled $1.4 million and $1.5 million at March 31, 2021 and December 31, 2020, respectively. There were no consumer mortgage loans secured by residential real estate property for which formal foreclosure proceedings were in process as of March 31, 2021.

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GOODWILL AND OTHER INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

GOODWILL AND OTHER INTANGIBLE ASSETS

The gross carrying amounts and accumulated amortization of intangible assets and goodwill are presented at the dates indicated in the following table:

	March 31, 2021						Weighted Average Remaining Life	December 31, 2020						Weighted Average Remaining Life
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	29,038	$	(9,169)	$	19,869	8.2 years	$	29,038	$	(7,969)	$	21,069	8.4 years
Other identifiable intangibles	13,906		(2,951)		10,955		10.5 years	13,906		(2,454)		11,452		10.7 years
Total amortizing intangible assets	$	42,944	$	(12,120)	$	30,824		$	42,944	$	(10,423)	$	32,521
Goodwill	$	370,223			$	370,223		$	370,223			$	370,223

The amount of goodwill by reportable segment is presented in the following table:

(In thousands)	Community Banking		Insurance		Investment Management		Total
Balances at December 31, 2020	$	331,688	$	6,788	$	31,747	$	370,223
No Activity	—		—		—		—
Balances at March 31, 2021	$	331,688	$	6,788	$	31,747	$	370,223

The following table presents the estimated future amortization expense for amortizing intangible assets within the years ending December 31:

(In thousands)	Amount
Remaining 2021	$	4,903
2022	5,844
2023	5,089
2024	4,333
2025	3,567
Thereafter	7,088
Total amortizing intangible assets	$	30,824

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DEPOSITS

3 Months Ended

Mar. 31, 2021

Deposits [Abstract]

DEPOSITS

DEPOSITS

The following table presents the composition of deposits at the dates indicated:

(In thousands)	March 31, 2021		December 31, 2020
Noninterest-bearing deposits	$	3,770,852	$	3,325,547
Interest-bearing deposits:
Demand	1,395,209		1,292,164
Money market savings	3,371,400		3,339,645
Regular savings	465,125		418,051
Time deposits of less than $100,000	474,684		509,919
Time deposits greater than $100,000 and less than $250,000	774,668		670,717
Time deposits of $250,000 or more	425,814		477,026
Total interest-bearing deposits	6,906,900		6,707,522
Total deposits	$	10,677,752	$	10,033,069

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BORROWINGS

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

BORROWINGS

BORROWINGS

Subordinated Debt

On November 5, 2019, the Company completed an offering of $175.0 million aggregate principal amount Fixed to Floating Rate Subordinated Notes due in 2029. The notes bear a fixed interest rate of 4.25% per year through November 14, 2024. Beginning November 15, 2024, the interest rate will become a floating rate equal to three month LIBOR, or an alternative benchmark rate as determined pursuant to the terms of the indenture for the notes in the event LIBOR has been discontinued by

November 15, 2024, plus 262 basis points through the remaining maturity or early redemption date of the notes. The interest will be paid in arrears semi-annually during the fixed rate period and quarterly during the floating rate period. The Company incurred $2.9 million of debt issuance costs which are being amortized through the contractual life of the debt. The entire amount of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

In conjunction with the acquisition of WashingtonFirst Bankshares, Inc. ("WashingtonFirst"), the Company assumed $25.0 million in subordinated debt with an associated purchase premium at acquisition of $2.2 million. The premium is amortized over the contractual life of the obligation. The subordinated debt has a maturity of 10 years, maturing on October 15, 2025, and was non-callable through October 15, 2020. The subordinated debt held a fixed interest rate of 6.00% per annum through October 5, 2020 at which point the rate became variable at the three-month LIBOR plus 457 basis points payable quarterly. As of March 31, 2021, the effective variable rate was 4.81%. Under regulatory capital guidelines subordinated debt begins to phase out of Tier 2 capital qualification, on an annual straight-line basis, when there are five years remaining until the subordinated debt matures. The WashingtonFirst subordinated debt has less than five years but more than four years remaining until it matures, and therefore, as of March 31, 2021, $20.0 million of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

In conjunction with the acquisition of Revere, the Company assumed $31.0 million in subordinated debt with an associated purchase premium at acquisition of $0.2 million, which will be amortized through the call date. The subordinated debt has a 10 year term, maturing on September 30, 2026, is non-callable until September 30, 2021, and currently bears a fixed interest rate of 5.625% per annum, payable semi-annually. Beginning on October 1, 2021, the interest rate resets quarterly to an amount equal to 3 month LIBOR plus 441 basis points. The entire amount of the subordinated debt is considered Tier 2 capital under current regulatory guidelines.

The following table provides information on subordinated debt as of the date indicated:

(In thousands)	March 31, 2021		December 31, 2020
Fixed to floating rate sub debt, 4.25%	$	175,000	$	175,000
WashingtonFirst sub debt, 4.81%	25,000		25,000
Revere fixed to floating rate sub debt, 5.625%	31,000		31,000
Total Sub debt	231,000		231,000
Less: Debt held as investments by Sandy Spring	(3,000)		(3,000)
Add: Purchase accounting premium	1,552		1,669
Less: Debt issuance costs	(2,508)		(2,581)
Long-term borrowings	$	227,044	$	227,088

Other Borrowings

At March 31, 2021 and December 31, 2020, the Company had $129.3 million and $153.2 million, respectively, of outstanding retail repurchase agreements. The Company had $60.0 million and $390.0 million of outstanding federal funds purchased at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021, the Company did not have any borrowings outstanding of the $1.3 billion available to borrow under the Paycheck Protection Program Liquidity Facility ("PPPLF"). Amounts borrowed under the PPPLF are required to be repaid as PPP loans are repaid or forgiven.

At March 31, 2021, the Company had an available line of credit with the FHLB under which its borrowings are limited to $3.0 billion based on pledged collateral at prevailing market interest rates, with $100.0 million borrowed against it at March 31, 2021. At December 31, 2020, lines of credit with the FHLB totaled $3.0 billion based on pledged collateral with $379.1 million borrowed against the line. During the three months ended March 31, 2021, the Company repaid $279.0 million of FHLB advances, resulting in a prepayment penalty of $9.1 million, which was recorded to other expense in the Condensed Consolidated Statements of Income.

Under a blanket lien, the Company has pledged qualifying residential mortgage loans amounting to $897.8 million, commercial real estate loans amounting to $2.8 billion, home equity lines of credit (“HELOC”) amounting to $230.5 million, and multifamily loans amounting to $259.4 million at March 31, 2021, as collateral under the borrowing agreement with the FHLB. At December 31, 2020, the Company had pledged collateral of qualifying mortgage loans of $1.0 billion, commercial real estate loans of $2.8 billion, HELOC loans of $226.2 million, and multifamily loans of $237.6 million under the FHLB borrowing agreement. The Company also had secured lines of credit available from the Federal Reserve Bank and correspondent banks of $420.4 million and $276.2 million at March 31, 2021 and December 31, 2020, respectively, collateralized by loans, with no borrowings outstanding at the end of either period. In addition, the Company had unsecured lines of credit with correspondent

banks of $1.1 billion at both March 31, 2021 and December 31, 2020. Of the unsecured lines available at March 31, 2021 and December 31, 2020, there was $60.0 million and $390.0 million outstanding, respectively.

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STOCKHOLDERS' EQUITY	3 Months Ended
	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS' EQUITYIn December 2020, the Company's board of directors authorized a stock repurchase plan that permits the repurchase of up to 2,350,000 shares of common stock. No shares of common stock have been repurchased under this plan. Under the previous stock repurchase plan that was approved in 2018 and expired in December 2020, the Company was authorized to repurchase up to 1,800,000 shares. During the first quarter of 2020, the Company repurchased and retired 820,328 common shares for the total cost of $25.7 million. Cumulatively under the previous plan, as of December 31, 2020, the Company repurchased and retired 1,488,519 shares of its common stock at an average price of $33.58 per share for a total cumulative cost of $50.0 million.

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SHARE BASED COMPENSATION

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

SHARE BASED COMPENSATION

SHARE BASED COMPENSATION

At March 31, 2021, the Company had two share based compensation plans in existence, the 2005 Omnibus Stock Plan (“Omnibus Stock Plan”) and the 2015 Omnibus Incentive Plan (“Omnibus Incentive Plan”). The Omnibus Stock Plan expired during the second quarter of 2015 but has outstanding options that may still be exercised. The Omnibus Incentive Plan is described in the following paragraph.

The Company’s Omnibus Incentive Plan was approved on May 6, 2015 and provides for the granting of incentive stock options, non-qualifying stock options, stock appreciation rights, restricted stock grants, restricted stock units and performance share units to selected directors and employees on a periodic basis at the discretion of the Company’s Board of Directors. The Omnibus Incentive Plan authorizes the issuance of up to 1,500,000 shares of common stock, of which 797,157 are available for issuance at March 31, 2021, has a term of 10 years, and is administered by a committee of at least three directors appointed by the Board of Directors. Options granted under the plan have an exercise price which may not be less than 100% of the fair market value of the common stock on the date of the grant and must be exercised within seven years or 10 years from the date of grant depending on the terms of the grant agreement. The exercise price of stock options must be paid for in full in cash or shares of common stock, or a combination of both. The board committee has the discretion when making a grant of stock options to impose restrictions on the shares to be purchased upon the exercise of such options. The Company generally issues authorized but previously unissued shares to satisfy option exercises.

The dividend yield is based on estimated future dividend yields. The risk-free rate for periods within the contractual term of the share option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected volatilities are generally based on historical volatilities. The expected term of share options granted is generally derived from historical experience.

Compensation expense is recognized on a straight-line basis over the vesting period of the respective stock option, restricted stock, restricted stock unit grant or performance share units. The Company recognized compensation expense of $0.9 million and $0.8 million, for the three months ended March 31, 2021 and 2020, respectively, related to the awards of stock options, restricted stock grants, restricted stock unit grants and performance share unit grants. There was no unrecognized compensation cost related to stock options as of March 31, 2021. The total of unrecognized compensation cost related to restricted stock awards, restricted stock unit grants, and performance share unit grants was approximately $11.8 million as of March 31, 2021. That cost is expected to be recognized over a weighted average period of approximately 2.70 years.

During the three months ended March 31, 2021, the Company granted 119,329 restricted shares, restricted stock units and performance share units, of which 32,728 units are subject to achievement of certain performance conditions measured over a three-year performance period and 86,601 restricted shares or units are subject to a three year vesting schedule. The Company did not grant any stock options under the Omnibus Incentive Plan during the three months ended March 31, 2021.

A summary of share option activity for the period indicated is reflected in the following table:

	Number of Common Shares	Weighted Average Exercise Share Price		Weighted Average Contractual Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Balance at January 1, 2021	430,038	$	14.97	3.0 years	$	6,828
Granted	—	$	—
Exercised	(102,365)	$	14.96		$	2,381
Forfeited	—	$	—
Expired	—	$	—
Balance at March 31, 2021	327,673	$	14.98	2.6 years	$	9,045
Exercisable at March 31, 2021	322,908	$	14.63	2.6 years	$	9,017

A summary of the activity for the Company’s restricted stock, restricted stock units and performance share units for the period indicated is presented in the following table:

	Number of Common Shares/Units	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2021	391,683	$	29.50
Granted	119,329	$	40.70
Vested	(13,669)	$	37.64
Forfeited/ cancelled	(3,988)	$	34.86
Non-vested at March 31, 2021	493,355	$	31.94

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PENSION PLAN

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

PENSION PLAN

PENSION PLAN

Defined Benefit Pension Plan

The Company has a qualified, noncontributory, defined benefit pension plan (the “Plan”). Benefits after January 1, 2005, are based on the benefit earned as of December 31, 2004, plus benefits earned in future years of service based on the employee’s compensation during each such year. All benefit accruals for employees were frozen as of December 31, 2007 based on past service and thus salary increases and additional years of service after such date no longer affect the defined benefit provided by the Plan, although additional vesting may continue to occur.

The Company's funding policy is to contribute amounts to the Plan sufficient to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended. In addition, the Company contributes additional amounts as it deems appropriate based on benefits attributed to service prior to the date of the Plan freeze. The Plan invests primarily in a diversified portfolio of managed fixed income and equity funds.

The components of net periodic benefit cost for the periods indicated are presented in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Interest cost on projected benefit obligation	$	318	$	359
Expected return on plan assets	(312)		(456)
Recognized net actuarial loss	227		219
Net periodic benefit cost	$	233	$	122

The decision as to whether or not to make a plan contribution and the amount of any such contribution is dependent on a number of factors. Such factors include the investment performance of Plan assets in the current economy and, since the Plan is currently frozen, the remaining investment horizon of the Plan. After consideration of these factors, the Company has not made a contribution during the three months ended March 31, 2021. Management continues to monitor the funding level of the Plan and may make additional contributions as necessary during 2021.

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NET INCOME PER COMMON SHARE

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

NET INCOME PER COMMON SHARE

NET INCOME PER COMMON SHARE

The calculation of net income per common share for the periods indicated is presented in the following table:

	Three Months Ended March 31,
(Dollars and amounts in thousands, except per share data)	2021		2020
Net income	$	75,464	$	9,987
Distributed and undistributed earnings allocated to         participating securities	(640)		(68)
Net income attributable to common shareholders	$	74,824	$	9,919
Total weighted average outstanding shares	47,530		34,979
Less: Weighted average participating securities	(411)		(314)
Basic weighted average common shares	47,119		34,665
Dilutive weighted average common stock equivalents	296		78
Diluted weighted average common shares	47,415		34,743
Basic net income per common share	$	1.59	$	0.29
Diluted net income per common share	$	1.58	$	0.28
Anti-dilutive shares	3		9

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ACCUMULATED OTHER COMPREHENSIVE INCOME/ (LOSS)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME/ (LOSS)

ACCUMULATED OTHER COMPREHENSIVE INCOME/ (LOSS)

Comprehensive income/ (loss) is defined as net income/ (loss) plus transactions and other occurrences that are the result of non-owner changes in equity. For Condensed Consolidated Financial Statements presented for the Company, non-owner changes in equity are comprised of unrealized gains or losses on investments available-for-sale and any minimum pension liability adjustments.

The following table presents the activity in net accumulated other comprehensive income/ (loss) and the components of the activity for the periods indicated:

(In thousands)	Unrealized Gains on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2021	$	28,175	$	(9,470)	$	18,705
Other comprehensive loss before reclassification, net of tax	(21,478)		—		(21,478)
Reclassifications from accumulated other comprehensive income, net of tax	(43)		164		121
Current period change in other comprehensive income, net of tax	(21,521)		164		(21,357)
Balance at March 31, 2021	$	6,654	$	(9,306)	$	(2,652)

(In thousands)	Unrealized Gains/ (Losses) on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2020	$	4,000	$	(8,332)	$	(4,332)
Other comprehensive income before reclassification, net of tax	10,639		—		10,639
Reclassifications from accumulated other comprehensive income, net of tax	(127)		164		37
Current period change in other comprehensive income, net of tax	10,512		164		10,676
Balance at March 31, 2020	$	14,512	$	(8,168)	$	6,344

The following table provides the information on the reclassification adjustments out of accumulated other comprehensive income/ (loss) for the periods indicated:

	Three Months Ended March 31,
(In thousands)	2021		2020
Unrealized gains on investments available-for-sale:
Affected line item in the Statements of Income:
Investment securities gains	$	58	$	169
Income before taxes	58		169
Tax expense	(15)		(42)
Net income	$	43	$	127
Amortization of defined benefit pension plan items:
Affected line item in the Statements of Income:
Recognized actuarial loss (1)	$	(227)	$	(219)
Loss before taxes	(227)		(219)
Tax benefit	63		55
Net loss	$	(164)	$	(164)

(1)This amount is included in the computation of net periodic benefit cost. See Note 11 for additional information on the pension plan.

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LEASES

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Leases

LEASES

The Company leases real estate properties for its network of bank branches, financial centers and corporate offices. All of the Company’s leases are currently classified as operating. Most lease agreements include one or more options to renew, with renewal terms that can extend the original lease term from one to twenty years or more. The Company does not sublease any of its leased real estate properties.

The following table provides information regarding the Company's leases as of the dates indicated:

	Three Months Ended March 31,
	2021		2020
Components of lease expense:
Operating lease cost (resulting from lease payments)	$	3,151	$	2,730
Supplemental cash flow information related to leases:
Operating cash flows from operating leases	$	3,280	$	2,082
ROU assets obtained in the exchange for lease liabilities due to:
New leases	$	803	$	—
Acquisitions	$	—	$	311
	March 31, 2021		December 31, 2020
Supplemental balance sheet information related to leases:
Operating lease ROU assets	$	64,455	$	65,215
Operating lease liabilities	$	74,219	$	74,982
Other information related to leases:
Weighted average remaining lease term of operating leases	9.4 years		9.5 years
Weighted average discount rate of operating leases	2.97%		3.04%

 

At March 31, 2021, the maturities of the Company’s operating lease liabilities were as follows:

 

(In thousands)	Amount
Maturity:
Remaining 2021	$	9,346
2022	11,068
2023	11,054
2024	9,251
2025	7,537
Thereafter	38,522
Total undiscounted lease payments	86,778
Less: Present value discount	(12,559)
Lease liability	$	74,219

The Company recognized lease liabilities of $1.9 million and ROU assets of $1.6 million for two operating leases that have not yet commenced operations at March 31, 2021. One lease is expected to commence operations during the second quarter of 2021 and one is expected to commence operations during the fourth quarter of 2021. The associated ROU assets include approximately $0.2 million of tenant allowances for improvements to the spaces. The Company does not have any lease arrangements with any of its related parties as of March 31, 2021.

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DERIVATIVES	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVESThe Company has entered into interest rate swaps (“swaps”) to facilitate customer transactions and meet their financing needs. These swaps qualify as derivatives, but are not designated as hedging instruments. Interest rate swap contracts involve the risk of dealing with counterparties and their ability to meet contractual terms. When the fair value of a derivative instrument contract is positive, this generally indicates that the counterparty or customer owes the Company and results in credit risk to the Company. When the fair value of a derivative instrument contract is negative, the Company owes the customer or counterparty and, therefore, has no credit risk. The notional value of the swaps outstanding was $374.7 million as of March 31, 2021 compared to $320.5 million as of December 31, 2020. The fair values of swap positions net to zero to minimize the potential impact on the Company’s Condensed Consolidated Financial Statements. Fair values of the swaps are carried as both gross assets and gross liabilities in other assets and other liabilities, respectively, in the Condensed Consolidated Statements of Condition. The associated net gains and losses on the swaps are recorded in Other income in the Condensed Consolidated Statements of Income.

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LITIGATION	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
LITIGATION	LITIGATIONThe Company and its subsidiaries are subject in the ordinary course of business to various pending or threatened legal proceedings in which claims for monetary damages are asserted. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these legal matters will have a material adverse effect on the Company's financial condition, operating results or liquidity.

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FAIR VALUE

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE

FAIR VALUE

GAAP provides entities the option to measure eligible financial assets, financial liabilities and commitments at fair value (i.e. the fair value option), on an instrument-by-instrument basis, that are otherwise not permitted to be accounted for at fair value under other accounting standards. The election to use the fair value option is available when an entity first recognizes a financial asset or financial liability or upon entering into a commitment. Subsequent changes in fair value must be recorded in earnings. The Company applies the fair value option on residential mortgage loans held for sale. The fair value option on residential mortgage loans held for sale allows the recognition of gains on the sale of mortgage loans to more accurately reflect the timing and economics of the transaction.

The standard for fair value measurement establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below.

Basis of Fair Value Measurement:

Level 1- Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2- Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability;

Level 3- Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported by little or no market activity).

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

Changes to interest rates may result in changes in the cash flows due to prepayments or extinguishments. Accordingly, changes to interest rates could result in higher or lower measurements of the fair values.

Assets and Liabilities

Residential mortgage loans held for sale

Residential mortgage loans held for sale are valued based on quotations from the secondary market for similar instruments and are classified as Level 2 in the fair value hierarchy.

Investments available-for-sale

U.S. treasuries and government agencies securities and mortgage-backed and asset-backed securities

Valuations are based on active market data and use of evaluated broker pricing models that vary based by asset class and includes available trade, bid, and other market information. Generally, the methodology includes broker quotes, proprietary models, descriptive terms, and databases coupled with extensive quality control programs. Quality control evaluation processes use available market, credit and deal level information to support the evaluation of the security. Additionally, proprietary models and pricing systems, mathematical tools, actual transacted prices, integration of market developments and experienced evaluators are used to determine the value of a security based on a hierarchy of market information regarding a security or securities with similar characteristics. The Company does not adjust the quoted price for such securities. Such instruments are classified within Level 2 in the fair value hierarchy.

State and municipal securities

The Company primarily uses prices obtained from third-party pricing services to determine the fair value of securities. The Company independently evaluates and corroborates the fair value received from pricing services through various methods and techniques, including references to dealer or other market quotes, by reviewing valuations of comparable instruments, and by comparing the prices realized on the sale of similar securities. Such securities are classified within Level 2 in the fair value hierarchy.

Corporate debt

The fair value of corporate debt is determined by utilizing a discounted cash flow valuation technique employed by a third-party valuation specialist. The third-party specialist uses assumptions related to yield, prepayment speed, conditional default rates and loss severity based on certain factors such as, credit worthiness of the counterparty, prevailing market rates, and analysis of similar securities. The Company evaluates the fair values provided by the third-party specialist for reasonableness and classifies them as level 3 in the fair value hierarchy.

Interest rate swap agreements

Interest rate swap agreements are measured by alternative pricing sources using a discounted cash flow method that incorporates current market interest rates. Based on the complex nature of interest rate swap agreements, the markets these instruments trade in are not as efficient and are less liquid than that of the more mature Level 1 markets. These characteristics classify interest rate swap agreements as Level 2 in the fair value hierarchy.

Assets Measured at Fair Value on a Recurring Basis

The following tables set forth the Company’s financial assets and liabilities at the dates indicated that were accounted for or disclosed at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	84,930	$	—	$	84,930
Investments available-for-sale:
U.S. treasuries and government agencies	—		48,086		—		48,086
State and municipal	—		366,032		—		366,032
Mortgage-backed and asset-backed	—		1,006,179		—		1,006,179
Corporate debt	—		—		7,583		7,583
Total investments available-for-sale	—		1,420,297		7,583		1,427,880
Interest rate swap agreements	—		6,402		—		6,402
Total assets	$	—	$	1,511,629	$	7,583	$	1,519,212
Liabilities:
Interest rate swap agreements	$	—	$	(6,402)	$	—	$	(6,402)
Total liabilities	$	—	$	(6,402)	$	—	$	(6,402)

 (1) The outstanding principal balance for residential loans held for sale as of March 31, 2021 was $83.3 million.

	December 31, 2020
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	78,294	$	—	$	78,294
Investments available-for-sale:
U.S. treasuries and government agencies	—		43,297		—		43,297
State and municipal	—		390,367		—		390,367
Mortgage-backed and asset-backed	—		904,432		—		904,432
Corporate debt	—		—		9,925		9,925
Total investments available-for-sale	—		1,338,096		9,925		1,348,021
Interest rate swap agreements	—		9,183		—		9,183
Total assets	$	—	$	1,425,573	$	9,925	$	1,435,498
Liabilities:
Interest rate swap agreements	$	—	$	(9,183)	$	—	$	(9,183)
Total liabilities	$	—	$	(9,183)	$	—	$	(9,183)

 (1) The outstanding principal balance for residential loans held for sale as of December 31, 2020 was $75.5 million.

The following table provides a change in the fair value of assets measured in the Condensed Consolidated Statements of Condition at fair value with significant unobservable inputs (Level 3) on a recurring basis for the period indicated:

	Significant Unobservable Inputs
(In thousands)	(Level 3)
Investments available-for-sale:
Balance at January 1, 2021	$	9,925
Additions of Level 3 assets	—
Sales of Level 3 assets	(2,102)
Total unrealized loss included in other comprehensive income/ (loss)	(240)
Balance at March 31, 2021	$	7,583

Assets Measured at Fair Value on a Nonrecurring Basis

The following tables set forth the Company’s financial assets subject to fair value adjustments on a nonrecurring basis at the date indicated that are valued at the lower of cost or market. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
(In thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Total Losses
Loans (1)	$	—	$	—	$	5,513	$	5,513	$	(5,780)
Other real estate owned	—		—		1,354		1,354		(387)
Total	$	—	$	—	$	6,867	$	6,867	$	(6,167)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

	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		Total Losses
Loans (1)	$	—	$	—	$	13,901	$	13,901	$	(11,326)
Other real estate owned	—		—		1,455		1,455		(286)
Total	$	—	$	—	$	15,356	$	15,356	$	(11,612)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

At March 31, 2021, loans totaling $82.0 million were written down to fair value of $68.9 million as a result of individual credit loss allowances of $13.1 million associated with the collateral dependent loans. Loans totaling $97.7 million were written down to fair value of $86.3 million at December 31, 2020 as a result of individual credit loss allowances of $11.4 million associated with the collateral dependent loans.

Fair value of the collateral dependent loans is measured based on the loan’s observable market price or the fair value of the collateral (less estimated selling costs). Collateral may be real estate and/or business assets such as equipment, inventory and/or accounts receivable. The value of business equipment, inventory and accounts receivable collateral is based on net book value on the business’ financial statements and, if necessary, discounted based on management’s review and analysis. Appraised and reported values may be discounted based on management’s historical experience, changes in market conditions from the time of valuation, and/or management’s expertise and knowledge of the client and client’s business. Collateral dependent loans are reviewed and evaluated on at least a quarterly basis for additional individual reserve and adjusted accordingly, based on the factors identified above.

OREO is adjusted to fair value upon acquisition of the real estate collateral. Subsequently, OREO is carried at the lower of carrying value or fair value. The estimated fair value for OREO included in Level 3 is determined by independent market based appraisals and other available market information, less costs to sell, that may be reduced further based on market expectations

or an executed sales agreement. If the fair value of the collateral deteriorates subsequent to initial recognition, the Company records the OREO as a nonrecurring Level 3 adjustment. Valuation techniques are consistent with those techniques applied in prior periods.

Fair Value of Financial Instruments

The Company discloses fair value information, based on the exit price notion, of financial instruments that are not measured at fair value in the financial statements. Fair value is the amount at which a financial instrument could be exchanged in a current transaction between willing parties, other than in a forced sale or liquidation, and is best evidenced by a quoted market price, if one exists.

Quoted market prices, where available, are shown as estimates of fair market values. Because no quoted market prices are available for a significant portion of the Company's financial instruments, the fair value of such instruments has been derived based on the amount and timing of future cash flows and estimated discount rates based on observable inputs (“Level 2”) or unobservable inputs (“Level 3”).

Present value techniques used in estimating the fair value of many of the Company's financial instruments are significantly affected by the assumptions used. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate cash settlement of the instrument. Additionally, the accompanying estimates of fair values are only representative of the fair values of the individual financial assets and liabilities, and should not be considered an indication of the fair value of the Company. Management utilizes internal models used in asset liability management to determine the fair values disclosed below.

The carrying amounts and fair values of the Company’s financial instruments at the dates indicated are presented in the following tables:

					Fair Value Measurements
	March 31, 2021				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	228,621	$	228,621	$	228,621	$	—	$	—
Residential mortgage loans held for sale	84,930		84,930		—		84,930		—
Investments available-for-sale	1,427,880		1,427,880		—		1,420,297		7,583
Equity securities	44,847		44,847		44,847		—		—
Loans, net of allowance	10,316,505		10,339,985		—		—		10,339,985
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest receivable	44,559		44,559		44,559		—		—
Bank owned life insurance	127,567		127,567		—		127,567		—
Financial liabilities:
Time deposits	$	1,675,166	$	1,687,100	$	—	$	1,687,100	$	—
Other deposits	9,002,586		9,002,586		9,002,586		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	189,318		189,318		—		189,318		—
Advances from FHLB	100,000		100,327		—		100,327		—
Subordinated debt	227,044		217,942		—		—		217,942
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest payable	4,019		4,019		4,019		—		—

					Fair Value Measurements
	December 31, 2020				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	297,003	$	297,003	$	297,003	$	—	$	—
Residential mortgage loans held for sale	78,294		78,294		—		78,294		—
Investments available-for-sale	1,348,021		1,348,021		—		1,338,096		9,925
Equity securities	65,760		65,760		65,760		—		—
Loans, net of allowance	10,235,142		10,336,355		—		—		10,336,355
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest receivable	46,431		46,431		46,431		—		—
Bank owned life insurance	126,887		126,887		—		126,887		—
Financial liabilities:
Time deposits	$	1,657,662	$	1,674,112	$	—	$	1,674,112	$	—
Other deposits	8,375,407		8,375,407		8,375,407		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	543,157		543,157		—		543,157		—
Advances from FHLB	379,075		390,593		—		390,593		—
Subordinated debt	227,088		227,512		—		—		227,512
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest payable	3,254		3,254		3,254		—		—

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SEGMENT REPORTING

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

SEGMENT REPORTING

SEGMENT REPORTING

Currently, the Company conducts business in three operating segments - Community Banking, Insurance, and Investment Management. Each of the operating segments is a strategic business unit that offers different products and services. The Insurance and Investment Management segments were businesses that were acquired in separate transactions where management of the acquired business was retained. The accounting policies of the segments are the same as those of the Company. However, the segment data reflects inter-segment transactions and balances.

The Community Banking segment is conducted through Sandy Spring Bank and involves delivering a broad range of financial products and services, including various loan and deposit products, to both individuals and businesses. Parent company income and assets are included in the Community Banking segment, as the majority of parent company functions are related to this segment. Major revenue sources include net interest income, gains on sales of mortgage loans, trust income fees, and service charges on deposit accounts. Expenses include personnel, occupancy, marketing, equipment, and other expenses. Non-cash charges associated with amortization of intangibles were $1.2 million and $0.4 million for the three months ended March 31, 2021 and 2020, respectively.

The Insurance segment is conducted through Sandy Spring Insurance, a subsidiary of the Bank. Sandy Spring Insurance operates Sandy Spring Insurance, a general insurance agency located in Annapolis, Maryland, and Neff and Associates, located in Ocean City, Maryland. Major sources of revenue are insurance commissions from commercial lines, personal lines, and medical liability lines. Expenses include personnel, occupancy, support charges, and other expenses. Non-cash charges associated with amortization of intangibles were immaterial for the three months ended March 31, 2021 and 2020.

The Investment Management segment is conducted through West Financial and RPJ, subsidiaries of the Bank. These asset management and financial planning firms, located in McLean, Virginia and Falls Church, Virginia, respectively, provide comprehensive investment management and financial planning to individuals, families, small businesses and associations, including cash flow analysis, investment review, tax planning, retirement planning, insurance analysis and estate planning. West Financial and RPJ had approximately $3.6 billion in combined assets under management as of March 31, 2021. Major revenue sources include non-interest income earned on the above services. Expenses include personnel, occupancy, support charges, and other expenses. Non-cash charges associated with amortization of intangibles for the three months ended March 31, 2021 and 2020 were $0.5 million and $0.2 million, respectively.

Information for the operating segments and reconciliation of the information to the Condensed Consolidated Financial Statements for the periods indicated are presented in the following tables:

	Three Months Ended March 31, 2021
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	114,261	$	1	$	2	$	(3)	$	114,261
Interest expense	9,664		—		—		(3)		9,661
Provision for credit losses	(34,708)		—		—		—		(34,708)
Non-interest income	21,725		2,151		5,207		(217)		28,866
Non-interest expense	63,695		1,487		3,208		(217)		68,173
Income before income taxes	97,335		665		2,001		—		100,001
Income tax expense	23,838		183		516		—		24,537
Net income	$	73,497	$	482	$	1,485	$	—	$	75,464
Assets	$	12,878,311	$	11,504	$	56,688	$	(73,137)	$	12,873,366

	Three Months Ended March 31, 2020
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	83,857	$	3	$	2	$	(4)	$	83,858
Interest expense	19,528		—		—		(4)		19,524
Provision for credit losses	24,469		—		—		—		24,469
Non-interest income	13,977		2,129		2,266		(204)		18,168
Non-interest expense	44,655		1,464		1,831		(204)		47,746
Income before income taxes	9,182		668		437		—		10,287
Income tax expense	1		185		114		—		300
Net income	$	9,181	$	483	$	323	$	—	$	9,987
Assets	$	8,917,849	$	10,887	$	55,657	$	(54,791)	$	8,929,602

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SIGNIFICANT ACCOUNTING POLICIES (Policies)

3 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

Nature of Operations

Nature of Operations

Sandy Spring Bancorp, Inc. ("Sandy Spring" or, together with its subsidiaries, the "Company"), a Maryland corporation, is the bank holding company for Sandy Spring Bank (the “Bank”). Independent and community-oriented, Sandy Spring Bank offers a broad range of commercial banking, retail banking, mortgage services and trust services throughout central Maryland, Northern Virginia, and the greater Washington, D.C. market. Sandy Spring Bank also offers a comprehensive menu of insurance and wealth management services through its subsidiaries, Sandy Spring Insurance Corporation (“Sandy Spring Insurance”), West Financial Services, Inc. (“West Financial”) and Rembert Pendleton Jackson (“RPJ”).

Basis of Presentation

Basis of Presentation

The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America (“GAAP”), prevailing practices within the financial services industry for interim financial information and Rule 10-01 of Regulation S-X. Accordingly, the interim financial statements do not include all of the information and notes required for complete financial statements. The following summary of significant accounting policies of the Company is presented to assist the reader in understanding the financial and other data presented in this report. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for any future periods or for the year ending December 31, 2021. In the opinion of management, all adjustments necessary for a fair presentation of the results of the interim periods have been included. Certain reclassifications have been made to prior period amounts, as necessary, to conform to the current period presentation. The Company has evaluated subsequent events through the date of the issuance of its financial statements.

These statements should be read in conjunction with the financial statements and accompanying notes included in the Company’s 2020 Annual Report on Form 10-K as filed with the Securities and Exchange Commission (“SEC”) on February 19, 2021. There have been no significant changes to any of the Company’s accounting policies as disclosed in the 2020 Annual Report on Form 10-K.

Principles of Consolidation

Principles of Consolidation

The unaudited Condensed Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiary, Sandy Spring Bank, and its subsidiaries, Sandy Spring Insurance, West Financial and RPJ. Consolidation has resulted in the elimination of all intercompany accounts and transactions. See Note 18 for more information on the Company’s segments and consolidation.

Use of Estimates

Use of Estimates

The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, in addition to affecting the reported amounts of revenues earned and expenses incurred during the reporting period. Actual results could differ from those estimates. Estimates that could change significantly relate to the provision for credit losses and the related allowance, potential impairment of goodwill or other intangible assets, valuation of investment securities and the determination of whether available-for-sale debt securities with fair values less than amortized costs are impaired and require an allowance for credit losses, valuation of other real estate owned, valuation of share based compensation, the assessment that a liability should be recognized with respect to any matters under litigation, the calculation of current and deferred income taxes, and the actuarial projections related to pension expense and the related liability.

Cash Flows

Cash Flows

For purposes of reporting cash flows, cash and cash equivalents include cash and due from banks, federal funds sold and interest-bearing deposits with banks (items with stated original maturity of three months or less).

Revenue from Contracts with Customers

Revenue from Contracts with Customers

The Company’s revenue includes net interest income on financial instruments and non-interest income. Specific categories of revenue are presented in the Condensed Consolidated Statements of Income. Most of the Company’s revenue is not within the scope of Accounting Standard Codification (“ASC”) 606 – Revenue from Contracts with Customers. For revenue within the scope of ASC 606, the Company provides services to customers and has related performance obligations. The revenue from such services is recognized upon satisfaction of all contractual performance obligations. The following discusses key revenue streams within the scope of revenue recognition guidance.

Wealth Management Income

West Financial and RPJ provide comprehensive investment management and financial planning services. Wealth management income is comprised of income for providing trust, estate and investment management services. Trust services include acting as a trustee for corporate or personal trusts. Investment management services include investment management, record-keeping and reporting of security portfolios. Fees for these services are recognized based on a contractually-agreed fixed percentage applied to net assets under management at the end of each reporting period. The Company does not charge/recognize any performance-based fees.

Insurance Agency Commissions

Sandy Spring Insurance, a subsidiary of the Bank, performs the function of an insurance intermediary by introducing the policyholder and insurer and is compensated by a commission fee for placement of an insurance policy. Sandy Spring Insurance does not provide any captive management services or any claim handling services. Commission fees are set as a percentage of the premium for the insurance policy for which Sandy Spring Insurance is a producer. Sandy Spring Insurance recognizes revenue when the insurance policy has been contractually agreed to by the insurer and policyholder (at transaction date).

Service Charges on Deposit Accounts

Service charges on deposit accounts are earned on depository accounts for consumer and commercial account holders and include fees for account and overdraft services. Account services include fees for event-driven services and periodic account maintenance activities. An obligation for event-driven services is satisfied at the time of the event when service is delivered and revenue recognized as earned. Obligation for maintenance activities is satisfied over the course of each month and revenue is recognized at month end. The overdraft services obligation is satisfied at the time of the overdraft and revenue is recognized as earned.

Loan Financing Receivables

Loan Financing Receivables

The Company’s financing receivables consist primarily of loans that are stated at their principal balance outstanding, net of any unearned income, acquisition fair value marks and deferred loan origination fees and costs. Interest income on loans is accrued at the contractual rate based on the principal balance outstanding. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method.

Loans are considered past due or delinquent when the principal or interest due in accordance with the contractual terms of the loan agreement or any portion thereof remains unpaid after the due date of the scheduled payment. Immaterial shortfalls in payment amounts do not necessarily result in a loan being considered delinquent or past due. If any payments are past due and subsequent payments are resumed without payment of the delinquent amount, the loan shall continue to be considered past due. Whenever any loan is reported delinquent on a principal or interest payment or portion thereof, the amount reported as delinquent is the outstanding principal balance of the loan.

Loans, except for consumer installment loans, are placed into non-accrual status when any portion of the loan principal or interest becomes 90 days past due. Management may determine that certain circumstances warrant earlier discontinuance of interest accruals on specific loans if an evaluation of other relevant factors (such as bankruptcy, interruption of cash flows, etc.) indicates collection of amounts contractually due is unlikely. These loans are considered, collectively, to be non-performing loans. Consumer installment loans that are not secured by real estate are not placed on non-accrual, but are charged down to their net realizable value when they are four months past due. Loans designated as non-accrual have all previously accrued but unpaid interest reversed. Interest income is not recognized on non-accrual loans. All payments received on non-accrual loans are applied using a cost-recovery method to reduce the outstanding principal balance until the loan returns to accrual status. Loans may be returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured.

Loans considered to be TDRs are loans that have their terms restructured (e.g., interest rates, loan maturity date, payment and amortization period, etc.) in circumstances that provide payment relief to a borrower experiencing financial difficulty. All restructured collateral-dependent loans are individually assessed for allowance for credit losses and may either be in accruing or non-accruing status. Non-accruing restructured loans may return to accruing status provided doubt has been removed concerning the collectability of principal and interest as evidenced by a sufficient period of payment performance in accordance with the restructured terms. Loans may be removed from the restructured category if the borrower is no longer experiencing financial difficulty, a re-underwriting event took place, and the revised loan terms of the subsequent restructuring agreement are considered to be consistent with terms that can be obtained in the market for loans with comparable credit risk.

Allowance for Credit Losses

Allowance for Credit Losses

The allowance for credit losses (“allowance” or “ACL”) represents an amount which, in management's judgment, is adequate to absorb the lifetime expected losses that may be sustained on outstanding loans at the balance sheet date based on the evaluation

of the size and current risk characteristics of the loan portfolio, past events, current conditions, reasonable and supportable forecasts of future economic conditions and prepayment experience. The allowance is measured and recorded upon the initial recognition of a financial asset. The allowance is reduced by charge-offs, net of recoveries of previous losses, and is increased or decreased by a provision or credit for credit losses, which is recorded as a current period expense.

Determination of the adequacy of the allowance is inherently complex and requires the use of significant and highly subjective estimates. The reasonableness of the allowance is reviewed periodically by the Risk Committee of the Board of Directors and formally approved quarterly by that same committee of the Board.

The Company’s methodology for estimating the allowance includes: (1) a collective quantified reserve that reflects the Company’s historical default and loss experience adjusted for expected economic conditions throughout a reasonable and supportable period and the Company’s prepayment and curtailment rates; (2) collective qualitative factors that consider concentrations of the loan portfolio, expected changes to the economic forecasts, large relationships, early delinquencies, and factors related to credit administration, including, among others, loan-to-value ratios, borrowers’ risk rating and credit score migrations; and (3) individual allowances on collateral-dependent loans where borrowers are experiencing financial difficulty or when the Company determines that the foreclosure is probable. The Company excludes accrued interest from the measurement of the allowance as the Company has a non-accrual policy to reverse any accrued, uncollected interest income as loans are moved to non-accrual status.

Loans are pooled into segments based on the similar risk characteristics of the underlying borrowers, in addition to consideration of collateral type, industry and business purpose of the loans. Portfolio segments used to estimate the allowance are the same as portfolio segments used for general credit risk management purposes. Refer to Note 4 for more details on the Company’s portfolio segments.

The Company applies two calculation methodologies to estimate the collective quantified component of the allowance: discounted cash flows method and weighted average remaining life method. Allowance estimates on commercial acquisition, development and construction (“AD&C”) and residential construction segments are based on the weighted average remaining life method. Allowance estimates on all other portfolio segments are based on the discounted cash flows method. Segments utilizing the discounted cash flows method are further sub-segmented into risk level pools, determined either by risk rating for commercial loans or Beacon Scores ranges for residential and consumer loans. To better manage risk and reasonably determine the sufficiency of reserves, this segregation allows the Company to monitor the allowance component applicable to higher risk loans separate from the remainder of the portfolio. Collective calculation methodologies utilize the Company’s historical default and loss experience adjusted for future economic forecasts. The reasonable and supportable forecast period represents a two-year economic outlook for the applicable economic variables. Following the end of the reasonable and supportable forecast period expected losses revert back to the historical mean over the next two years on a straight-line basis. Economic variables that have the most significant impact on the allowance include: unemployment rate, house price index and number of business bankruptcies. Contractual loan level cash flows within the discounted cash flows methodology are adjusted for the Company’s historical prepayment and curtailment rate experience.

The individual reserve assessment is applied to collateral dependent loans where borrowers are experiencing financial difficulty or when the Company determines that a foreclosure is probable. The determination of the fair value of the collateral depends on whether a repayment of the loan is expected to be from the sale or the operation of the collateral. When a repayment is expected from the operation of the collateral, the Company uses the present value of expected cash flows from the operation of the collateral as the fair value. When the repayment of the loan is expected from the sale of the collateral the fair value of the collateral is based on an observable market price or the collateral’s appraised value, less estimated costs to sell. Third party appraisals used in the individual reserve assessment are conducted at least annually with underlying assumptions that are reviewed by management. Third party appraisals may be obtained on a more frequent basis if deemed necessary. Internal evaluations of collateral value are conducted quarterly to ensure any further deterioration of the collateral value is recognized on a timely basis. During the individual reserve assessment, management also considers the potential future changes in the value of the collateral over the remainder of the loan’s remaining life. The Company may receive updated appraisals which contradict the preliminary determination of fair value used to establish an individual allowance on a loan. In these instances the individual allowance is adjusted to reflect the Company’s evaluation of the updated appraised fair value. In the event a loss was previously confirmed and the loan was charged down to the estimated fair value based on a previous appraisal, the balance of partially charged-off loans are not subsequently increased, but could be further decreased depending on the direction of the change in fair value. Payments on fully or partially charged-off loans are accounted for under the cost-recovery method. Under this method, all payments received are applied on a cash basis to reduce the entire outstanding principal balance, then to recognize a recovery of all previously charged-off amounts before any interest income may be recognized. Based on the individual reserve assessment, if the Company determines that the fair value of the collateral is less than the amortized cost basis of the loan, an individual allowance will be established measured as the difference between the fair value of the collateral

(less costs to sell) and the amortized cost basis of the loan. Once a loss has been confirmed, the loan is charged-down to its estimated fair value.

Large groups of smaller non-accrual homogeneous loans are not individually evaluated for allowance and include residential permanent and construction mortgages and consumer installment loans. These portfolios are reserved for on a collective basis using historical loss rates of similar loans over the weighted average life of each pool.

The Company reviews its unfunded commitments to determine if they are unconditionally cancellable by the Company. If the unfunded commitment is determined to not be unconditionally cancellable by the Company, a reserve for unfunded commitments is established. The reserve for unfunded commitments considers both the likelihood that the funding will occur and an estimate of expected credit losses over the life of the commitment.

Management believes it uses relevant information available to make determinations about the allowance and that it has established the existing allowance in accordance with GAAP. However, the determination of the allowance requires significant judgment, and estimates of expected lifetime losses in the loan portfolio can vary significantly from the amounts actually observed. While management uses available information to recognize expected losses, future additions to the allowance may be necessary based on changes in the loans comprising the portfolio, changes in the current and forecasted economic conditions, changes to the interest rate environment which may directly impact prepayment and curtailment rate assumptions, and changes in the financial condition of borrowers.

Acquired Loans

Acquired Loans

Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value. The allowance for credit losses related to the acquired loan portfolio is not carried over. Acquired loans are classified into two categories based on the credit risk characteristics of the underlying borrowers as either purchased credit deteriorated (“PCD”) loans, or loans with no evidence of credit deterioration (“non-PCD”).

PCD loans are defined as a loan or pool of loans that have experienced more-than-insignificant credit deterioration since the origination date. The Company uses a combination of individual and pooled review approaches to determine if acquired loans are PCD. At acquisition, the Company considers a number of factors to determine if an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors include:

•loans classified as non-accrual,

•loans with risk rating of special mention or worse (using the Company's risk rating scale),

•loans with multiple risk rating downgrades since origination,

•loans with evidence of being 60 days or more past due,

•loans previously modified in a troubled debt restructuring,

•loans that received an interest only or payment deferral modification, and

•loans in industries that show evidence of additional risk due to economic conditions.

The initial allowance related to PCD loans that share similar risk characteristics is established using a pooled approach. The Company uses either a discounted cash flow or weighted average remaining life method to determine the required level of the allowance. PCD loans that were classified as non-accrual as of the acquisition date and are collateral dependent are assessed for allowance on an individual basis.

For PCD loans, an initial allowance is established on the acquisition date and added to the fair value of the loan to arrive at acquisition date amortized cost. Accordingly, no provision for credit losses is recognized on PCD loans at the acquisition date. Subsequent to the acquisition date, the initial allowance on PCD loans will increase or decrease based on future evaluations, with changes recognized in the provision for credit losses.

Non-PCD loans are pooled into segments together with originated loans that share similar risk characteristics and have an allowance established on the acquisition date, which is recognized in the current period provision for credit losses.

Determining the fair value of the acquired loans involves estimating the principal and interest payment cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life, interest rate profile, market interest rate environment, payment schedules, risk ratings, probability of default and loss given default, and estimated prepayment rates. For PCD loans, the non-credit discount or premium is allocated to individual loans as determined by the difference between the loan’s unpaid principal balance and amortized cost basis. The non-credit premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan. For non-PCD loans, the fair value discount or premium is

allocated to individual loans and recognized into interest income on a level yield basis over the remaining expected life of the loan.

Leases

Leases

The Company determines if an arrangement is a lease at inception. All of the Company’s leases are currently classified as operating leases and are included in other assets and other liabilities on the Company’s Condensed Consolidated Statements of Condition.

Right-of-use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease arrangements. Operating lease ROU assets and liabilities are recognized at the lease commencement date based on the present value of the expected future lease payments over the remaining lease term. In determining the present value of future lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date. The operating ROU assets are adjusted for any lease payments made at or before the lease commencement date, initial direct costs, any lease incentives received and, for acquired leases, any favorable or unfavorable fair value adjustments. The present value of the lease liability may include the impact of options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options provided in the lease terms. Lease expense is recognized on a straight-line basis over the expected lease term. Lease agreements that include lease and non-lease components, such as common area maintenance charges, are accounted for separately.

Pending Accounting Pronouncements

Pending Accounting Pronouncements

In March 2020, FASB released Accounting Standards Update (“ASU”) 2020-04 - Reference Rate Reform (Topic 848), which provides optional guidance to ease the accounting burden in accounting for, or recognizing the effects from, reference rate reform on financial reporting. The new standard is a result of LIBOR likely being discontinued as an available benchmark rate. The standard is elective and provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships, or other transactions that reference LIBOR, or another reference rate expected to be discontinued. The amendments in the update are effective for all entities between March 12, 2020 and December 31, 2022. The Company has established a cross-functional working group to guide the Company’s transition from LIBOR and has begun efforts to transition to alternative rates consistent with industry timelines. The Company has identified its products that utilize LIBOR and has implemented enhanced fallback language to facilitate the transition to alternative reference rates. The Company is evaluating existing platforms and systems and preparing to offer new rates.

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ACQUISITION OF REVERE BANK (Tables)

3 Months Ended

Mar. 31, 2021

Business Combinations [Abstract]

Provisional fair values of acquired identifiable assets and liabilities assumed

The consideration paid for Revere’s common equity and outstanding stock options and the provisional fair values of acquired identifiable assets and assumed identifiable liabilities as of March 31, 2021 were as follows:

(Dollars in thousands, except per share data)	March 31, 2021
Purchase price:
Fair value of common shares issued (12,768,949 shares) based on Sandy Spring's share price of $22.64	$	289,089
Fair value of Revere stock options converted to Sandy Spring stock options	3,611
Cash paid for cashed-out Revere stock options	291
Cash for fractional shares	11
Total purchase price	$	293,002
Identifiable assets:
Cash and cash equivalents	$	80,744
Investments available-for-sale	180,752
Loans	2,502,244
Premises and equipment	3,443
Accrued interest receivable	7,651
Core deposit intangible asset	18,360
Other assets	53,162
Total identifiable assets	$	2,846,356
Identifiable liabilities:
Deposits	$	2,322,422
Borrowings	205,514
Other liabilities	25,933
Total identifiable liabilities	$	2,553,869
Fair value of net assets acquired including identifiable intangible assets	292,487
Goodwill	$	515

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INVESTMENTS (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments

The amortized cost and estimated fair values of investments available-for-sale at the dates indicated are presented in the following table:

	March 31, 2021								December 31, 2020
(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. treasuries and government agencies	$	47,641	$	447	$	(2)	$	48,086	$	42,750	$	549	$	(2)	$	43,297
State and municipal	362,815		7,926		(4,709)		366,032		377,108		13,470		(211)		390,367
Mortgage-backed and asset-backed	1,001,475		15,222		(10,518)		1,006,179		881,201		24,078		(847)		904,432
Corporate debt	7,000		583		—		7,583		9,100		825		—		9,925
Total investments available-for-sale	$	1,418,931	$	24,178	$	(15,229)	$	1,427,880	$	1,310,159	$	38,922	$	(1,060)	$	1,348,021

Schedule of Unrealized Loss on Investments

Gross unrealized losses and fair value by length of time that the individual available-for-sale securities have been in an unrealized loss position at the dates indicated are presented in the following tables:

	March 31, 2021
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	1	$	4,972	$	2	$	—	$	—	$	4,972	$	2
State and municipal	43	115,530		4,709		—		—		115,530		4,709
Mortgage-backed and asset-backed	46	373,235		10,509		4,968		9		378,203		10,518
Total	90	$	493,737	$	15,220	$	4,968	$	9	$	498,705	$	15,229

	December 31, 2020
	Number of Securities	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. treasuries and government agencies	2	$	25,369	$	2	$	—	$	—	$	25,369	$	2
State and municipal	8	22,753		211		—		—		22,753		211
Mortgage-backed and asset-backed	24	44,746		154		76,879		693		121,625		847
Total	34	$	92,868	$	367	$	76,879	$	693	$	169,747	$	1,060

Estimated fair values of debt securities available-for-sale by contractual maturity

	March 31, 2021				December 31, 2020
(In thousands)	Fair Value		Amortized Cost		Fair Value		Amortized Cost
U.S. treasuries and government agencies:
One year or less	$	36,904	$	36,744	$	33,963	$	33,833
One to five years	11,182		10,897		9,334		8,917
Five to ten years	—		—		—		—
After ten years	—		—		—		—
State and municipal:
One year or less	13,175		13,098		16,581		16,458
One to five years	38,077		36,965		44,910		43,857
Five to ten years	49,417		47,569		59,059		56,130
After ten years	265,363		265,183		269,817		260,663
Mortgage-backed and asset-backed:
One year or less	1,923		1,905		1		1
One to five years	20,180		19,822		21,637		21,229
Five to ten years	67,401		66,718		74,142		72,481
After ten years	916,675		913,030		808,652		787,490
Corporate debt:
One year or less	—		—		—		—
One to five years	—		—		2,318		2,100
Five to ten years	7,583		7,000		7,607		7,000
After ten years	—		—		—		—
Total available-for-sale debt securities	$	1,427,880	$	1,418,931	$	1,348,021	$	1,310,159

Other Equity Securities

Other equity securities at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Federal Reserve Bank stock	$	34,028	$	38,650
Federal Home Loan Bank of Atlanta stock	10,142		26,433
Marketable equity securities	677		677
Total equity securities	$	44,847	$	65,760

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LOANS (Tables)

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Loan Portfolio Segment Balances

The loan portfolio segment balances at the dates indicated are presented in the following table:

(In thousands)	March 31, 2021		December 31, 2020
Commercial real estate:
Commercial investor real estate	$	3,652,418	$	3,634,720
Commercial owner-occupied real estate	1,644,848		1,642,216
Commercial AD&C	1,051,013		1,050,973
Commercial business	2,411,109		2,267,548
Total commercial loans	8,759,388		8,595,457
Residential real estate:
Residential mortgage	1,022,546		1,105,179
Residential construction	171,028		182,619
Consumer	493,904		517,254
Total residential and consumer loans	1,687,478		1,805,052
Total loans	$	10,446,866	$	10,400,509

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CREDIT QUALITY ASSESSMENT (Tables)

3 Months Ended

Mar. 31, 2021

Credit Loss [Abstract]

Summary Information On The Allowance For Credit Loss Activity

Summary information on the allowance for credit loss activity for the period indicated is provided in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Balance at beginning of period	$	165,367	$	56,132
Initial allowance on PCD loans at adoption of ASC 326	—		2,762
Transition impact of adopting ASC 326	—		2,983
Provision for credit losses	(34,708)		24,469
Loan charge-offs	(743)		(654)
Loan recoveries	445		108
Net charge-offs	(298)		(546)
Balance at period end	$	130,361	$	85,800

Activity in Allowance for Credit Losses or Loan and Lease Losses by Respective Loan Portfolio Segment

The following table provides summary information regarding collateral dependent loans individually evaluated for credit loss at the dates indicated:

(In thousands)	March 31, 2021		December 31, 2020
Collateral dependent loans individually evaluated for credit loss with an allowance	$	32,241	$	20,717
Collateral dependent loans individually evaluated for credit loss without an allowance	49,757		77,001
Total individually evaluated collateral dependent loans	$	81,998	$	97,718
Allowance for credit losses related to loans evaluated individually	$	13,101	$	11,405
Allowance for credit losses related to loans evaluated collectively	117,260		153,962
Total allowance for credit losses	$	130,361	$	165,367

The following tables provide information on the activity in the allowance for credit losses by the respective loan portfolio segment for the period indicated:

 

	For the Three Months Ended March 31, 2021
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Provision for credit losses	(8,981)			(5,594)			760			(14,343)			(4,018)			(849)			(1,683)			(34,708)
Charge-offs	—			—			—			(650)			—			—			(93)			(743)
Recoveries	27			—			—			16			270			—			132			445
Net recoveries (charge-offs)	27			—			—			(634)			270			—			39			(298)
Balance at end of period	$	48,450		$	14,467		$	22,917		$	31,829		$	7,547		$	653		$	4,498		$	130,361
Total loans	$	3,652,418		$	1,644,848		$	1,051,013		$	2,411,109		$	1,022,546		$	171,028		$	493,904		$	10,446,866
Allowance for credit losses to total loans ratio	1.33		%	0.88		%	2.18		%	1.32		%	0.74		%	0.38		%	0.91		%	1.25		%
Balance of loans individually evaluated for credit loss	$	42,776		$	8,316		$	14,975		$	13,831		$	1,737		$	—		$	363		$	81,998
Allowance related to loans evaluated individually	$	2,988		$	—		$	603		$	9,510		$	—		$	—		$	—		$	13,101
Individual allowance to loans evaluated individually ratio	6.99		%	—		%	4.03		%	68.76		%	—		%	—		%	—		%	15.98		%
Balance of loans collectively evaluated for credit loss	$	3,609,642		$	1,636,532		$	1,036,038		$	2,397,278		$	1,020,809		$	171,028		$	493,541		$	10,364,868
Allowance related to loans evaluated collectively	$	45,462		$	14,467		$	22,314		$	22,319		$	7,547		$	653		$	4,498		$	117,260
Collective allowance to loans evaluated collectively ratio	1.26		%	0.88		%	2.15		%	0.93		%	0.74		%	0.38		%	0.91		%	1.13		%

	For the Year Ended December 31, 2020
	Commercial Real Estate												Residential Real Estate
(Dollars in thousands)	Commercial Investor R/E			Commercial Owner- Occupied R/E			Commercial AD&C			Commercial Business			Residential Mortgage			Residential Construction			Consumer			Total
Balance at beginning of period	$	18,407		$	6,884		$	7,590		$	11,395		$	8,803		$	967		$	2,086		$	56,132
Initial allowance on PCD loans at adoption of ASC 326	1,114			—			—			1,549			—			—			99			2,762
Transition impact of adopting ASC 326	(3,125)			387			2,576			2,988			(388)			(275)			820			2,983
Initial allowance on acquired Revere PCD loans	7,973			2,782			1,248			6,289			243			6			87			18,628
Provision for credit losses	33,431			10,008			10,743			24,374			3,016			798			3,299			85,669
Charge-offs	(411)			—			—			(491)			(484)			—			(433)			(1,819)
Recoveries	15			—			—			702			105			6			184			1,012
Net recoveries (charge-offs)	(396)			—			—			211			(379)			6			(249)			(807)
Balance at end of period	$	57,404		$	20,061		$	22,157		$	46,806		$	11,295		$	1,502		$	6,142		$	165,367
Total loans	$	3,634,720		$	1,642,216		$	1,050,973		$	2,267,548		$	1,105,179		$	182,619		$	517,254		$	10,400,509
Allowance for credit losses to total loans ratio	1.58		%	1.22		%	2.11		%	2.06		%	1.02		%	0.82		%	1.19		%	1.59		%
Balance of loans individually evaluated for credit loss	$	45,227		$	11,561		$	15,044		$	23,648		$	1,874		$	—		$	364		$	97,718
Allowance related to loans evaluated individually	$	1,273		$	—		$	603		$	9,529		$	—		$	—		$	—		$	11,405
Individual allowance to loans evaluated individually ratio	2.81		%	—		%	4.01		%	40.30		%	—		%	—		%	—		%	11.67		%
Balance of loans collectively evaluated for credit loss	$	3,589,493		$	1,630,655		$	1,035,929		$	2,243,900		$	1,103,305		$	182,619		$	516,890		$	10,302,791
Allowance related to loans evaluated collectively	$	56,131		$	20,061		$	21,554		$	37,277		$	11,295		$	1,502		$	6,142		$	153,962
Collective allowance to loans evaluated collectively ratio	1.56		%	1.23		%	2.08		%	1.66		%	1.02		%	0.82		%	1.19		%	1.49		%

Schedule Of Collateral Dependent Loans Individually Evaluated For Credit Loss With The Associated Allowances

The following tables present collateral dependent loans individually evaluated for credit loss with the associated allowances for credit losses by the applicable portfolio segment and for the periods indicated:

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	17,686	$	—	$	1,446	$	9,730	$	—	$	—	$	—	$	28,862
Restructured accruing	—		—		—		573		—		—		—		573
Restructured non-accruing	336		—		—		2,470		—		—		—		2,806
Balance	$	18,022	$	—	$	1,446	$	12,773	$	—	$	—	$	—	$	32,241
Allowance	$	2,988	$	—	$	603	$	9,510	$	—	$	—	$	—	$	13,101
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	24,754	$	6,125	$	13,529	$	318	$	—	$	—	$	—	$	44,726
Restructured accruing	—		—		—		111		1,587		—		—		1,698
Restructured non-accruing	—		2,191		—		629		150		—		363		3,333
Balance	$	24,754	$	8,316	$	13,529	$	1,058	$	1,737	$	—	$	363	$	49,757
Total individually evaluated loans:
Non-accruing	$	42,440	$	6,125	$	14,975	$	10,048	$	—	$	—	$	—	$	73,588
Restructured accruing	—		—		—		684		1,587		—		—		2,271
Restructured non-accruing	336		2,191		—		3,099		150		—		363		6,139
Balance	$	42,776	$	8,316	$	14,975	$	13,831	$	1,737	$	—	$	363	$	81,998
Total unpaid contractual principal balance	$	47,547	$	10,306	$	16,157	$	16,088	$	2,814	$	—	$	364	$	93,276

	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Loans individually evaluated for credit loss with an allowance:
Non-accruing	$	4,913	$	—	$	1,328	$	11,178	$	—	$	—	$	—	$	17,419
Restructured accruing	—		—		—		589		—		—		—		589
Restructured non-accruing	699		—		—		2,010		—		—		—		2,709
Balance	$	5,612	$	—	$	1,328	$	13,777	$	—	$	—	$	—	$	20,717
Allowance	$	1,273	$	—	$	603	$	9,529	$	—	$	—	$	—	$	11,405
Loans individually evaluated for credit loss without an allowance:
Non-accruing	$	39,615	$	9,315	$	13,716	$	9,118	$	—	$	—	$	—	$	71,764
Restructured accruing	—		—		—		126		1,602		—		—		1,728
Restructured non-accruing	—		2,246		—		627		272		—		364		3,509
Balance	$	39,615	$	11,561	$	13,716	$	9,871	$	1,874	$	—	$	364	$	77,001
Total individually evaluated loans:
Non-accruing	$	44,528	$	9,315	$	15,044	$	20,296	$	—	$	—	$	—	$	89,183
Restructured accruing	—		—		—		715		1,602		—		—		2,317
Restructured non-accruing	699		2,246		—		2,637		272		—		364		6,218
Balance	$	45,227	$	11,561	$	15,044	$	23,648	$	1,874	$	—	$	364	$	97,718
Total unpaid contractual principal balance	$	49,920	$	15,309	$	16,040	$	30,958	$	3,225	$	—	$	364	$	115,816

Table Of Average Principal Balance Of The Total Non-Accrual Loans, Contractual Interest Due And Interest Income

The following tables present average principal balance of total non-accrual loans and contractual interest due on non-accrual loans for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	44,002	$	9,939	$	15,010	$	18,040	$	9,903	$	—	$	7,289	$	104,183
Contractual interest income due on non- accrual loans during the period	$	649	$	185	$	256	$	428	$	110	$	—	$	104	$	1,732

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Average non-accrual loans for the period	$	26,849	$	6,605	$	4,267	$	16,532	$	11,634	$	—	$	6,675	$	72,562
Contractual interest income due on non- accrual loans during the period	$	6,547	$	2,741	$	4,505	$	2,858	$	918	$	—	$	732	$	18,301

Schedule Of Information On The Credit Quality Of Loan Portfolio Under The New CECL

The following section provides information on the credit quality of the loan portfolio for the periods indicated below:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361
Loans placed on non-accrual	—		—		—		84		140		—		197		421
Non-accrual balances transferred to OREO	—		—		—		—		—		—		—		—
Non-accrual balances charged-off	—		—		—		(650)		—		—		(49)		(699)
Net payments or draws	(2,451)		(3,245)		(69)		(9,220)		(759)		—		(284)		(16,028)
Non-accrual loans brought current	—		—		—		—		—		—		(55)		(55)
Balance at end of period	$	42,776	$	8,316	$	14,975	$	13,147	$	9,593	$	—	$	7,193	$	96,000

	For the Year Ended December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Analysis of non-accrual loan activity:
Balance at beginning of period	$	8,437	$	4,148	$	829	$	8,450	$	12,661	$	—	$	4,107	$	38,632
PCD loans designated as non-accrual (1)	9,544		—		—		2,539		8		—		993		13,084
Loans placed on non-accrual	37,882		8,572		15,844		17,442		1,485		—		4,061		85,286
Non-accrual balances transferred to OREO	—		—		—		—		(70)		—		—		(70)
Non-accrual balances charged-off	(411)		—		—		(446)		(416)		—		(121)		(1,394)
Net payments or draws	(10,225)		(1,059)		(1,629)		(4,169)		(2,598)		—		(1,521)		(21,201)
Non-accrual loans brought current	—		(100)		—		(883)		(858)		—		(135)		(1,976)
Balance at end of period	$	45,227	$	11,561	$	15,044	$	22,933	$	10,212	$	—	$	7,384	$	112,361

(1)Upon the adoption of the CECL standard, the Company transitioned from closed pool level accounting for PCI loans during the first quarter of 2020. Non-accrual loans are determined based on the individual loan level and aggregated for reporting.

Credit Quality of Loan Portfolio by Segment

	March 31, 2021
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,587,859	$	1,633,446	$	1,031,055	$	2,392,818	$	997,837	$	170,365	$	483,280	$	10,296,660
30-59 days	17,870		3,086		4,983		3,983		9,593		601		1,809		41,925
60-89 days	3,913		—		—		446		3,538		62		1,622		9,581
Total performing loans	3,609,642		1,636,532		1,036,038		2,397,247		1,010,968		171,028		486,711		10,348,166
Non-performing loans:
Non-accrual loans	42,776		8,316		14,975		13,147		9,593		—		7,193		96,000
Loans greater than 90 days past due	—		—		—		31		398		—		—		429
Restructured loans	—		—		—		684		1,587		—		—		2,271
Total non-performing loans	42,776		8,316		14,975		13,862		11,578		—		7,193		98,700
Total loans	$	3,652,418	$	1,644,848	$	1,051,013	$	2,411,109	$	1,022,546	$	171,028	$	493,904	$	10,446,866

	December 31, 2020
	Commercial Real Estate								Residential Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		Residential Mortgage		Residential Construction		Consumer		Total
Performing loans:
Current	$	3,571,184	$	1,624,265	$	1,033,057	$	2,238,617	$	1,073,963	$	182,557	$	502,548	$	10,226,191
30-59 days	14,046		6,390		29		4,859		16,213		—		5,275		46,812
60-89 days	4,130		—		2,843		263		2,709		62		2,047		12,054
Total performing loans	3,589,360		1,630,655		1,035,929		2,243,739		1,092,885		182,619		509,870		10,285,057
Non-performing loans:
Non-accrual loans	45,227		11,561		15,044		22,933		10,212		—		7,384		112,361
Loans greater than 90 days past due	133		—		—		161		480		—		—		774
Restructured loans	—		—		—		715		1,602		—		—		2,317
Total non-performing loans	45,360		11,561		15,044		23,809		12,294		—		7,384		115,452
Total loans	$	3,634,720	$	1,642,216	$	1,050,973	$	2,267,548	$	1,105,179	$	182,619	$	517,254	$	10,400,509

Information About Credit Quality Indicator By The Year Of Origination

The following table provides information about credit quality indicators by the year of origination as of March 31, 2021:

	March 31, 2021
	Term Loans by Origination Year												Revolving
(In thousands)	2021		2020		2019		2018		2017		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	194,465	$	881,973	$	707,450	$	452,909	$	429,839	$	876,375	$	28,844	$	3,571,855
Special Mention	10,000		527		1,993		2,640		701		2,646		—		18,507
Substandard	279		437		6,175		13,555		28,149		13,461		—		62,056
Doubtful	—		—		—		—		—		—		—		—
Total	$	204,744	$	882,937	$	715,618	$	469,104	$	458,689	$	892,482	$	28,844	$	3,652,418
Commercial Owner-Occupied R/E:
Pass	$	47,661	$	287,070	$	375,951	$	222,539	$	188,795	$	485,151	$	4,793	$	1,611,960
Special Mention	—		1,871		4,327		3,586		4,698		5,279		—		19,761
Substandard	—		1,269		4,316		2,031		447		5,064		—		13,127
Doubtful	—		—		—		—		—		—		—		—
Total	$	47,661	$	290,210	$	384,594	$	228,156	$	193,940	$	495,494	$	4,793	$	1,644,848
Commercial AD&C:
Pass	$	174,120	$	373,158	$	244,751	$	110,557	$	47,150	$	—	$	80,645	$	1,030,381
Special Mention	639		1,073		—		—		—		—		—		1,712
Substandard	1,102		455		891		—		13,629		2,843		—		18,920
Doubtful	—		—		—		—		—		—		—		—
Total	$	175,861	$	374,686	$	245,642	$	110,557	$	60,779	$	2,843	$	80,645	$	1,051,013
Commercial Business:
Pass	$	459,815	$	1,059,494	$	179,214	$	129,096	$	77,302	$	71,681	$	396,258	$	2,372,860
Special Mention	—		2,043		8,793		1,063		1,214		845		3,792		17,750
Substandard	225		4,785		3,494		3,338		857		6,019		1,781		20,499
Doubtful	—		—		—		—		—		—		—		—
Total	$	460,040	$	1,066,322	$	191,501	$	133,497	$	79,373	$	78,545	$	401,831	$	2,411,109
Residential Mortgage:
Beacon score:
660-850	$	43,362	$	209,544	$	66,700	$	113,850	$	153,972	$	336,256	$	—	$	923,684
600-659	745		4,962		9,539		8,498		8,044		25,851		—		57,639
540-599	—		1,445		1,181		5,063		1,930		14,187		—		23,806
less than 540	497		2,318		1,545		3,182		1,118		8,757		—		17,417
Total	$	44,604	$	218,269	$	78,965	$	130,593	$	165,064	$	385,051	$	—	$	1,022,546
Residential Construction:
Beacon score:
660-850	$	27,097	$	101,290	$	21,059	$	14,166	$	1,248	$	1,738	$	364	$	166,962
600-659	—		—		2,743		—		—		369		—		3,112
540-599	—		—		—		—		—		—		—		—
less than 540	—		954		—		—		—		—		—		954
Total	$	27,097	$	102,244	$	23,802	$	14,166	$	1,248	$	2,107	$	364	$	171,028
Consumer:
Beacon score:
660-850	$	1,054	$	2,200	$	4,263	$	4,213	$	1,567	$	27,406	$	400,050	$	440,753
600-659	247		265		1,138		484		259		6,092		17,590		26,075
540-599	—		105		564		272		270		3,425		6,938		11,574
less than 540	103		729		151		569		765		3,277		9,908		15,502
Total	$	1,404	$	3,299	$	6,116	$	5,538	$	2,861	$	40,200	$	434,486	$	493,904
Total loans	$	961,411	$	2,937,967	$	1,646,238	$	1,091,611	$	961,954	$	1,896,722	$	950,963	$	10,446,866

 The following table provides information about credit quality indicators by the year of origination as of December 31, 2020:

	December 31, 2020
	Term Loans by Origination Year												Revolving
(In thousands)	2020		2019		2018		2017		2016		Prior		Loans		Total
Commercial Investor R/E:
Pass	$	910,426	$	763,214	$	448,406	$	448,698	$	469,077	$	498,384	$	33,531	$	3,571,736
Special Mention	11,044		—		4,879		833		269		27		—		17,052
Substandard	589		4,245		13,649		20,619		673		6,157		—		45,932
Doubtful	—		—		—		—		—		—		—		—
Total	$	922,059	$	767,459	$	466,934	$	470,150	$	470,019	$	504,568	$	33,531	$	3,634,720
Commercial Owner-Occupied R/E:
Pass	$	285,310	$	385,058	$	234,578	$	192,634	$	204,925	$	306,840	$	1,664	$	1,611,009
Special Mention	2,290		—		3,027		4,742		134		4,079		—		14,272
Substandard	1,610		4,335		2,065		465		219		8,009		—		16,703
Doubtful	—		—		—		—		—		232		—		232
Total	$	289,210	$	389,393	$	239,670	$	197,841	$	205,278	$	319,160	$	1,664	$	1,642,216
Commercial AD&C:
Pass	$	485,631	$	261,537	$	149,703	$	50,192	$	89	$	2,357	$	80,764	$	1,030,273
Special Mention	1,711		—		—		—		—		—		—		1,711
Substandard	1,439		891		—		13,816		2,843		—		—		18,989
Doubtful	—		—		—		—		—		—		—		—
Total	$	488,781	$	262,428	$	149,703	$	64,008	$	2,932	$	2,357	$	80,764	$	1,050,973
Commercial Business:
Pass	$	1,244,822	$	208,682	$	138,861	$	86,830	$	34,498	$	81,760	$	433,016	$	2,228,469
Special Mention	1,929		1,382		1,119		708		309		621		4,319		10,387
Substandard	2,914		4,564		3,519		1,631		2,745		3,456		1,829		20,658
Doubtful	106		995		849		36		1,284		1,852		2,912		8,034
Total	$	1,249,771	$	215,623	$	144,348	$	89,205	$	38,836	$	87,689	$	442,076	$	2,267,548
Residential Mortgage:
Beacon score:
660-850	$	229,033	$	74,054	$	138,824	$	172,493	$	129,701	$	251,065	$	—	$	995,170
600-659	4,824		7,706		10,763		11,719		8,173		21,424		—		64,609
540-599	350		1,238		5,219		2,608		4,791		10,167		—		24,373
less than 540	2,702		2,108		3,576		2,150		892		9,599		—		21,027
Total	$	236,909	$	85,106	$	158,382	$	188,970	$	143,557	$	292,255	$	—	$	1,105,179
Residential Construction:
Beacon score:
660-850	$	112,604	$	44,647	$	14,543	$	2,805	$	1,693	$	—	$	172	$	176,464
600-659	1,743		3,189		—		—		—		—		—		4,932
540-599	—		—		—		—		369		—		—		369
less than 540	854		—		—		—		—		—		—		854
Total	$	115,201	$	47,836	$	14,543	$	2,805	$	2,062	$	—	$	172	$	182,619
Consumer:
Beacon score:
660-850	$	2,575	$	4,609	$	5,112	$	2,110	$	2,614	$	24,444	$	417,737	$	459,201
600-659	374		445		334		428		467		5,401		21,052		28,501
540-599	89		1,216		294		339		601		3,926		6,153		12,618
less than 540	751		160		525		785		532		2,826		11,355		16,934
Total	$	3,789	$	6,430	$	6,265	$	3,662	$	4,214	$	36,597	$	456,297	$	517,254
Total loans	$	3,305,720	$	1,774,275	$	1,179,845	$	1,016,641	$	866,898	$	1,242,626	$	1,014,504	$	10,400,509

Restructured Loans for Specific Segments of Loan Portfolio

The following table provides the amounts of the restructured loans at the date of restructuring for specific segments of the loan portfolio during the period indicated:

	For the Three Months Ended March 31, 2021
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	—	$	—	$	—
Restructured non-accruing	—		—		—		512		—		512
Balance	$	—	$	—	$	—	$	512	$	—	$	512
Individual allowance	$	—	$	—	$	—	$	332	$	—	$	332
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

	For the Year Ended December 31, 2020
	Commercial Real Estate
(In thousands)	Commercial Investor R/E		Commercial Owner- Occupied R/E		Commercial AD&C		Commercial Business		All Other Loans		Total
Troubled debt restructurings:
Restructured accruing	$	—	$	—	$	—	$	380	$	549	$	929
Restructured non-accruing	723		930		—		1,951		—		3,604
Balance	$	723	$	930	$	—	$	2,331	$	549	$	4,533
Individual allowance	$	65	$	—	$	—	$	955	$	—	$	1,020
Restructured and subsequently defaulted	$	—	$	—	$	—	$	—	$	—	$	—

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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Gross Carrying Amounts and Accumulated Amortization of Intangible Assets and Goodwill

The gross carrying amounts and accumulated amortization of intangible assets and goodwill are presented at the dates indicated in the following table:

	March 31, 2021						Weighted Average Remaining Life	December 31, 2020						Weighted Average Remaining Life
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount			Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	29,038	$	(9,169)	$	19,869	8.2 years	$	29,038	$	(7,969)	$	21,069	8.4 years
Other identifiable intangibles	13,906		(2,951)		10,955		10.5 years	13,906		(2,454)		11,452		10.7 years
Total amortizing intangible assets	$	42,944	$	(12,120)	$	30,824		$	42,944	$	(10,423)	$	32,521
Goodwill	$	370,223			$	370,223		$	370,223			$	370,223

Net carrying amount of goodwill by segment

The amount of goodwill by reportable segment is presented in the following table:

(In thousands)	Community Banking		Insurance		Investment Management		Total
Balances at December 31, 2020	$	331,688	$	6,788	$	31,747	$	370,223
No Activity	—		—		—		—
Balances at March 31, 2021	$	331,688	$	6,788	$	31,747	$	370,223

Estimated Future Amortization Expense for Amortizing Intangibles

The following table presents the estimated future amortization expense for amortizing intangible assets within the years ending December 31:

(In thousands)	Amount
Remaining 2021	$	4,903
2022	5,844
2023	5,089
2024	4,333
2025	3,567
Thereafter	7,088
Total amortizing intangible assets	$	30,824

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DEPOSITS (Tables)

3 Months Ended

Mar. 31, 2021

Deposits [Abstract]

Composition of Deposits

(In thousands)	March 31, 2021		December 31, 2020
Noninterest-bearing deposits	$	3,770,852	$	3,325,547
Interest-bearing deposits:
Demand	1,395,209		1,292,164
Money market savings	3,371,400		3,339,645
Regular savings	465,125		418,051
Time deposits of less than $100,000	474,684		509,919
Time deposits greater than $100,000 and less than $250,000	774,668		670,717
Time deposits of $250,000 or more	425,814		477,026
Total interest-bearing deposits	6,906,900		6,707,522
Total deposits	$	10,677,752	$	10,033,069

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BORROWINGS (Tables)

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Schedule of Subordinated Borrowing

The following table provides information on subordinated debt as of the date indicated:

(In thousands)	March 31, 2021		December 31, 2020
Fixed to floating rate sub debt, 4.25%	$	175,000	$	175,000
WashingtonFirst sub debt, 4.81%	25,000		25,000
Revere fixed to floating rate sub debt, 5.625%	31,000		31,000
Total Sub debt	231,000		231,000
Less: Debt held as investments by Sandy Spring	(3,000)		(3,000)
Add: Purchase accounting premium	1,552		1,669
Less: Debt issuance costs	(2,508)		(2,581)
Long-term borrowings	$	227,044	$	227,088

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SHARE BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Share Option Activity

A summary of share option activity for the period indicated is reflected in the following table:

	Number of Common Shares	Weighted Average Exercise Share Price		Weighted Average Contractual Remaining Life (Years)	Aggregate Intrinsic Value (in thousands)
Balance at January 1, 2021	430,038	$	14.97	3.0 years	$	6,828
Granted	—	$	—
Exercised	(102,365)	$	14.96		$	2,381
Forfeited	—	$	—
Expired	—	$	—
Balance at March 31, 2021	327,673	$	14.98	2.6 years	$	9,045
Exercisable at March 31, 2021	322,908	$	14.63	2.6 years	$	9,017

Summary of Activity for Company's Restricted Stock

A summary of the activity for the Company’s restricted stock, restricted stock units and performance share units for the period indicated is presented in the following table:

	Number of Common Shares/Units	Weighted Average Grant-Date Fair Value
Non-vested at January 1, 2021	391,683	$	29.50
Granted	119,329	$	40.70
Vested	(13,669)	$	37.64
Forfeited/ cancelled	(3,988)	$	34.86
Non-vested at March 31, 2021	493,355	$	31.94

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PENSION PLAN (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Net Periodic Benefit Cost

The components of net periodic benefit cost for the periods indicated are presented in the following table:

	Three Months Ended March 31,
(In thousands)	2021		2020
Interest cost on projected benefit obligation	$	318	$	359
Expected return on plan assets	(312)		(456)
Recognized net actuarial loss	227		219
Net periodic benefit cost	$	233	$	122

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NET INCOME/ (LOSS) PER COMMON SHARE (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Calculation of Net Income Per Common Share

The calculation of net income per common share for the periods indicated is presented in the following table:

	Three Months Ended March 31,
(Dollars and amounts in thousands, except per share data)	2021		2020
Net income	$	75,464	$	9,987
Distributed and undistributed earnings allocated to         participating securities	(640)		(68)
Net income attributable to common shareholders	$	74,824	$	9,919
Total weighted average outstanding shares	47,530		34,979
Less: Weighted average participating securities	(411)		(314)
Basic weighted average common shares	47,119		34,665
Dilutive weighted average common stock equivalents	296		78
Diluted weighted average common shares	47,415		34,743
Basic net income per common share	$	1.59	$	0.29
Diluted net income per common share	$	1.58	$	0.28
Anti-dilutive shares	3		9

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

3 Months Ended

Mar. 31, 2021

Equity [Abstract]

Activity in net accumulated other comprehensive income (loss) and the components of the activity

The following table presents the activity in net accumulated other comprehensive income/ (loss) and the components of the activity for the periods indicated:

(In thousands)	Unrealized Gains on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2021	$	28,175	$	(9,470)	$	18,705
Other comprehensive loss before reclassification, net of tax	(21,478)		—		(21,478)
Reclassifications from accumulated other comprehensive income, net of tax	(43)		164		121
Current period change in other comprehensive income, net of tax	(21,521)		164		(21,357)
Balance at March 31, 2021	$	6,654	$	(9,306)	$	(2,652)

(In thousands)	Unrealized Gains/ (Losses) on Investments Available-for-Sale		Defined Benefit Pension Plan		Total
Balance at January 1, 2020	$	4,000	$	(8,332)	$	(4,332)
Other comprehensive income before reclassification, net of tax	10,639		—		10,639
Reclassifications from accumulated other comprehensive income, net of tax	(127)		164		37
Current period change in other comprehensive income, net of tax	10,512		164		10,676
Balance at March 31, 2020	$	14,512	$	(8,168)	$	6,344

Schedule of reclassification adjustments out of accumulated other comprehensive income (loss)

The following table provides the information on the reclassification adjustments out of accumulated other comprehensive income/ (loss) for the periods indicated:

	Three Months Ended March 31,
(In thousands)	2021		2020
Unrealized gains on investments available-for-sale:
Affected line item in the Statements of Income:
Investment securities gains	$	58	$	169
Income before taxes	58		169
Tax expense	(15)		(42)
Net income	$	43	$	127
Amortization of defined benefit pension plan items:
Affected line item in the Statements of Income:
Recognized actuarial loss (1)	$	(227)	$	(219)
Loss before taxes	(227)		(219)
Tax benefit	63		55
Net loss	$	(164)	$	(164)

(1)This amount is included in the computation of net periodic benefit cost. See Note 11 for additional information on the pension plan.

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LEASES (Tables)

3 Months Ended

Mar. 31, 2021

Leases [Abstract]

Lease, Cost

The following table provides information regarding the Company's leases as of the dates indicated:

	Three Months Ended March 31,
	2021		2020
Components of lease expense:
Operating lease cost (resulting from lease payments)	$	3,151	$	2,730
Supplemental cash flow information related to leases:
Operating cash flows from operating leases	$	3,280	$	2,082
ROU assets obtained in the exchange for lease liabilities due to:
New leases	$	803	$	—
Acquisitions	$	—	$	311
	March 31, 2021		December 31, 2020
Supplemental balance sheet information related to leases:
Operating lease ROU assets	$	64,455	$	65,215
Operating lease liabilities	$	74,219	$	74,982
Other information related to leases:
Weighted average remaining lease term of operating leases	9.4 years		9.5 years
Weighted average discount rate of operating leases	2.97%		3.04%

Maturities of operating lease liabilities

At March 31, 2021, the maturities of the Company’s operating lease liabilities were as follows:

 

(In thousands)	Amount
Maturity:
Remaining 2021	$	9,346
2022	11,068
2023	11,054
2024	9,251
2025	7,537
Thereafter	38,522
Total undiscounted lease payments	86,778
Less: Present value discount	(12,559)
Lease liability	$	74,219

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FAIR VALUE (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Financial assets and Liabilities at Dates Indicated that were Accounted for at Fair Value

The following tables set forth the Company’s financial assets and liabilities at the dates indicated that were accounted for or disclosed at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	84,930	$	—	$	84,930
Investments available-for-sale:
U.S. treasuries and government agencies	—		48,086		—		48,086
State and municipal	—		366,032		—		366,032
Mortgage-backed and asset-backed	—		1,006,179		—		1,006,179
Corporate debt	—		—		7,583		7,583
Total investments available-for-sale	—		1,420,297		7,583		1,427,880
Interest rate swap agreements	—		6,402		—		6,402
Total assets	$	—	$	1,511,629	$	7,583	$	1,519,212
Liabilities:
Interest rate swap agreements	$	—	$	(6,402)	$	—	$	(6,402)
Total liabilities	$	—	$	(6,402)	$	—	$	(6,402)

 (1) The outstanding principal balance for residential loans held for sale as of March 31, 2021 was $83.3 million.

	December 31, 2020
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Residential mortgage loans held for sale (1)	$	—	$	78,294	$	—	$	78,294
Investments available-for-sale:
U.S. treasuries and government agencies	—		43,297		—		43,297
State and municipal	—		390,367		—		390,367
Mortgage-backed and asset-backed	—		904,432		—		904,432
Corporate debt	—		—		9,925		9,925
Total investments available-for-sale	—		1,338,096		9,925		1,348,021
Interest rate swap agreements	—		9,183		—		9,183
Total assets	$	—	$	1,425,573	$	9,925	$	1,435,498
Liabilities:
Interest rate swap agreements	$	—	$	(9,183)	$	—	$	(9,183)
Total liabilities	$	—	$	(9,183)	$	—	$	(9,183)

 (1) The outstanding principal balance for residential loans held for sale as of December 31, 2020 was $75.5 million.

Change in Fair Value of Assets Measured in Condensed Consolidated Statements of Condition at Fair Value on a Recurring Basis

The following table provides a change in the fair value of assets measured in the Condensed Consolidated Statements of Condition at fair value with significant unobservable inputs (Level 3) on a recurring basis for the period indicated:

	Significant Unobservable Inputs
(In thousands)	(Level 3)
Investments available-for-sale:
Balance at January 1, 2021	$	9,925
Additions of Level 3 assets	—
Sales of Level 3 assets	(2,102)
Total unrealized loss included in other comprehensive income/ (loss)	(240)
Balance at March 31, 2021	$	7,583

Assets Measured at Fair Value on Nonrecurring Basis

The following tables set forth the Company’s financial assets subject to fair value adjustments on a nonrecurring basis at the date indicated that are valued at the lower of cost or market. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	March 31, 2021
(In thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Total Losses
Loans (1)	$	—	$	—	$	5,513	$	5,513	$	(5,780)
Other real estate owned	—		—		1,354		1,354		(387)
Total	$	—	$	—	$	6,867	$	6,867	$	(6,167)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

	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		Total Losses
Loans (1)	$	—	$	—	$	13,901	$	13,901	$	(11,326)
Other real estate owned	—		—		1,455		1,455		(286)
Total	$	—	$	—	$	15,356	$	15,356	$	(11,612)

(1) Amounts represent the fair value of collateral for collateral dependent non-accrual loans allocated to the allowance for credit losses. Fair values are determined using actual market prices (Level 2), independent third party valuations and borrower records, discounted as appropriate (Level 3).

Carrying Amounts And Fair Values of Company's Financial Instruments

The carrying amounts and fair values of the Company’s financial instruments at the dates indicated are presented in the following tables:

					Fair Value Measurements
	March 31, 2021				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	228,621	$	228,621	$	228,621	$	—	$	—
Residential mortgage loans held for sale	84,930		84,930		—		84,930		—
Investments available-for-sale	1,427,880		1,427,880		—		1,420,297		7,583
Equity securities	44,847		44,847		44,847		—		—
Loans, net of allowance	10,316,505		10,339,985		—		—		10,339,985
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest receivable	44,559		44,559		44,559		—		—
Bank owned life insurance	127,567		127,567		—		127,567		—
Financial liabilities:
Time deposits	$	1,675,166	$	1,687,100	$	—	$	1,687,100	$	—
Other deposits	9,002,586		9,002,586		9,002,586		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	189,318		189,318		—		189,318		—
Advances from FHLB	100,000		100,327		—		100,327		—
Subordinated debt	227,044		217,942		—		—		217,942
Interest rate swap agreements	6,402		6,402		—		6,402		—
Accrued interest payable	4,019		4,019		4,019		—		—

					Fair Value Measurements
	December 31, 2020				Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
(In thousands)	Carrying Amount		Estimated Fair Value
Financial assets:
Cash and cash equivalents	$	297,003	$	297,003	$	297,003	$	—	$	—
Residential mortgage loans held for sale	78,294		78,294		—		78,294		—
Investments available-for-sale	1,348,021		1,348,021		—		1,338,096		9,925
Equity securities	65,760		65,760		65,760		—		—
Loans, net of allowance	10,235,142		10,336,355		—		—		10,336,355
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest receivable	46,431		46,431		46,431		—		—
Bank owned life insurance	126,887		126,887		—		126,887		—
Financial liabilities:
Time deposits	$	1,657,662	$	1,674,112	$	—	$	1,674,112	$	—
Other deposits	8,375,407		8,375,407		8,375,407		—		—
Securities sold under retail repurchase agreements and
federal funds purchased	543,157		543,157		—		543,157		—
Advances from FHLB	379,075		390,593		—		390,593		—
Subordinated debt	227,088		227,512		—		—		227,512
Interest rate swap agreements	9,183		9,183		—		9,183		—
Accrued interest payable	3,254		3,254		3,254		—		—

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SEGMENT REPORTING (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Operating Segments and Reconciliation of Information to Consolidated Financial Statements

Information for the operating segments and reconciliation of the information to the Condensed Consolidated Financial Statements for the periods indicated are presented in the following tables:

	Three Months Ended March 31, 2021
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	114,261	$	1	$	2	$	(3)	$	114,261
Interest expense	9,664		—		—		(3)		9,661
Provision for credit losses	(34,708)		—		—		—		(34,708)
Non-interest income	21,725		2,151		5,207		(217)		28,866
Non-interest expense	63,695		1,487		3,208		(217)		68,173
Income before income taxes	97,335		665		2,001		—		100,001
Income tax expense	23,838		183		516		—		24,537
Net income	$	73,497	$	482	$	1,485	$	—	$	75,464
Assets	$	12,878,311	$	11,504	$	56,688	$	(73,137)	$	12,873,366

	Three Months Ended March 31, 2020
(In thousands)	Community Banking		Insurance		Investment Management		Inter-Segment Elimination		Total
Interest income	$	83,857	$	3	$	2	$	(4)	$	83,858
Interest expense	19,528		—		—		(4)		19,524
Provision for credit losses	24,469		—		—		—		24,469
Non-interest income	13,977		2,129		2,266		(204)		18,168
Non-interest expense	44,655		1,464		1,831		(204)		47,746
Income before income taxes	9,182		668		437		—		10,287
Income tax expense	1		185		114		—		300
Net income	$	9,181	$	483	$	323	$	—	$	9,987
Assets	$	8,917,849	$	10,887	$	55,657	$	(54,791)	$	8,929,602

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ACQUISITION OF REVERE BANK - Narrative (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Mar. 31, 2020 USD ($) bank	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Apr. 01, 2020 USD ($) $ / shares shares
Business Acquisition [Line Items]
Total transaction value		$ 293,002
Assets		2,846,356
Provisional amount of goodwill recognized		$ 515		$ 800
Subsequent Event | Forecast
Business Acquisition [Line Items]
Provisional amount of goodwill recognized			$ 500
Sandy Spring Shareholders
Business Acquisition [Line Items]
Percentage of ownership in combined company				74.00%
Revere shareholders
Business Acquisition [Line Items]
Percentage of ownership in combined company				26.00%
Maryland-based Revere
Business Acquisition [Line Items]
Business acquisition rate of share exchange (in shares) | shares				1.05
Closing price (in dollars per share) | $ / shares				$ 22.64
Total transaction value	$ 293,000
Assets	$ 2,800,000
Number of banking offices | bank	11

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ACQUISITION OF REVERE BANK - Provisional fair values of acquired identifiable assets and liabilities assumed (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Apr. 01, 2020
Purchase price:
Fair value of common shares issued (12,768,949 shares) based on Sandy Spring's share price of $22.64	$ 289,089
Fair value of Revere stock options converted to Sandy Spring stock options	3,611
Cash paid for cashed-out Revere stock options	291
Cash for fractional shares	11
Total purchase price	293,002
Identifiable assets:
Cash and cash equivalents	80,744
Investments available-for-sale	180,752
Loans	2,502,244
Premises and equipment	3,443
Accrued interest receivable	7,651
Core deposit intangible asset	18,360
Other assets	53,162
Total identifiable assets	2,846,356
Identifiable liabilities:
Deposits	2,322,422
Borrowings	205,514
Other liabilities	25,933
Total identifiable liabilities	2,553,869
Fair value of net assets acquired including identifiable intangible assets	292,487
Goodwill	$ 515	$ 800
Stock issued during period (in shares)	12,768,949

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INVESTMENTS - Amortized Cost and Estimated Fair Values of Investments Available-for-sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale debt securities	$ 1,418,931	$ 1,310,159
Gross Unrealized Gains	24,178	38,922
Gross Unrealized Losses	15,229	1,060
Total available-for-sale debt securities	1,427,880	1,348,021
U.S. treasuries and government agencies
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale debt securities	47,641	42,750
Gross Unrealized Gains	447	549
Gross Unrealized Losses	2	2
Total available-for-sale debt securities	48,086	43,297
State and municipal
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale debt securities	362,815	377,108
Gross Unrealized Gains	7,926	13,470
Gross Unrealized Losses	4,709	211
Total available-for-sale debt securities	366,032	390,367
Mortgage-backed and asset-backed
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale debt securities	1,001,475	881,201
Gross Unrealized Gains	15,222	24,078
Gross Unrealized Losses	10,518	847
Total available-for-sale debt securities	1,006,179	904,432
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Total available-for-sale debt securities	7,000	9,100
Gross Unrealized Gains	583	825
Gross Unrealized Losses	0	0
Total available-for-sale debt securities	$ 7,583	$ 9,925

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INVESTMENTS - Narrative (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Separate Account Investment [Line Items]
Investments available-for-sale book value	$ 454.0	$ 465.7
Government National Mortgage Association Certificates And Obligations Federal National Mortgage Association Certificates And Obligations And Federal Home Loan Mortgage Corporation Certificates And Obligations | Collateralized Mortgage Obligations
Fair Value, Separate Account Investment [Line Items]
Mortgage-backed securities	318.5
Government National Mortgage Association Certificates And Obligations Federal National Mortgage Association Certificates And Obligations And Federal Home Loan Mortgage Corporation Certificates And Obligations | Collateralized Mortgage Backed Securities
Fair Value, Separate Account Investment [Line Items]
Mortgage-backed securities	626.0
Government National Mortgage Association Certificates And Obligations Federal National Mortgage Association Certificates And Obligations And Federal Home Loan Mortgage Corporation Certificates And Obligations | SBA asset backed securities
Fair Value, Separate Account Investment [Line Items]
Mortgage-backed securities	$ 61.7

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INVESTMENTS - Gross Unrealized Losses and Fair Value by Length of Time of Available-For-Sale Securities (Detail) $ in Thousands	Mar. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Number of Securities | security	90	34
Fair Value
Less Than 12 Months	$ 493,737	$ 92,868
12 Months or More	4,968	76,879
Total	498,705	169,747
Unrealized Losses
Less Than 12 Months	15,220	367
12 Months or More	9	693
Total	$ 15,229	$ 1,060
U.S. treasuries and government agencies
Debt Securities, Available-for-sale [Line Items]
Number of Securities | security	1	2
Fair Value
Less Than 12 Months	$ 4,972	$ 25,369
12 Months or More	0	0
Total	4,972	25,369
Unrealized Losses
Less Than 12 Months	2	2
12 Months or More	0	0
Total	$ 2	$ 2
State and municipal
Debt Securities, Available-for-sale [Line Items]
Number of Securities | security	43	8
Fair Value
Less Than 12 Months	$ 115,530	$ 22,753
12 Months or More	0	0
Total	115,530	22,753
Unrealized Losses
Less Than 12 Months	4,709	211
12 Months or More	0	0
Total	$ 4,709	$ 211
Mortgage-backed and asset-backed
Debt Securities, Available-for-sale [Line Items]
Number of Securities | security	46	24
Fair Value
Less Than 12 Months	$ 373,235	$ 44,746
12 Months or More	4,968	76,879
Total	378,203	121,625
Unrealized Losses
Less Than 12 Months	10,509	154
12 Months or More	9	693
Total	$ 10,518	$ 847

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INVESTMENTS - Estimated fair values of debt securities available-for-sale by contractual maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value
Total available-for-sale debt securities	$ 1,427,880	$ 1,348,021
Amortized Cost
Total available-for-sale debt securities	1,418,931	1,310,159
U.S. treasuries and government agencies
Fair Value
One year or less	36,904	33,963
One to five years	11,182	9,334
Five to ten years	0	0
After ten years	0	0
Total available-for-sale debt securities	48,086	43,297
Amortized Cost
One year or less	36,744	33,833
One to five years	10,897	8,917
Five to ten years	0	0
After ten years	0	0
Total available-for-sale debt securities	47,641	42,750
State and municipal
Fair Value
One year or less	13,175	16,581
One to five years	38,077	44,910
Five to ten years	49,417	59,059
After ten years	265,363	269,817
Total available-for-sale debt securities	366,032	390,367
Amortized Cost
One year or less	13,098	16,458
One to five years	36,965	43,857
Five to ten years	47,569	56,130
After ten years	265,183	260,663
Total available-for-sale debt securities	362,815	377,108
Mortgage-backed and asset-backed
Fair Value
One year or less	1,923	1
One to five years	20,180	21,637
Five to ten years	67,401	74,142
After ten years	916,675	808,652
Total available-for-sale debt securities	1,006,179	904,432
Amortized Cost
One year or less	1,905	1
One to five years	19,822	21,229
Five to ten years	66,718	72,481
After ten years	913,030	787,490
Total available-for-sale debt securities	1,001,475	881,201
Corporate debt
Fair Value
One year or less	0	0
One to five years	0	2,318
Five to ten years	7,583	7,607
After ten years	0	0
Total available-for-sale debt securities	7,583	9,925
Amortized Cost
One year or less	0	0
One to five years	0	2,100
Five to ten years	7,000	7,000
After ten years	0	0
Total available-for-sale debt securities	$ 7,000	$ 9,100

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INVESTMENTS (Other Equity Securities) (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]
Federal Reserve Bank stock	$ 34,028	$ 38,650
Federal Home Loan Bank of Atlanta stock	10,142	26,433
Marketable equity securities	677	677
Total equity securities	$ 44,847	$ 65,760

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LOANS - Narrative (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Net deferred loan fees	$ 30.3	$ 24.5
Paycheck Protection Program
Loans and Leases Receivable Disclosure [Line Items]
Net deferred loan fees	$ 27.0	$ 21.2

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LOANS (Loan Portfolio Segment Balances) (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 10,446,866	$ 10,400,509
Commercial investor real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,652,418	3,634,720
Commercial owner-occupied real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,644,848	1,642,216
Commercial AD&C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,051,013	1,050,973
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,022,546	1,105,179
Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	171,028	182,619
Commercial real estate: | Commercial investor real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,652,418	3,634,720
Commercial real estate: | Commercial owner-occupied real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,644,848	1,642,216
Commercial real estate: | Commercial AD&C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,051,013	1,050,973
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	8,759,388	8,595,457
Commercial | Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,411,109	2,267,548
Residential real estate: | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,022,546	1,105,179
Residential real estate: | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	171,028	182,619
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	493,904	517,254
Total residential and consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 1,687,478	$ 1,805,052

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CREDIT QUALITY ASSESSMENT - Allowance for credit loss activity (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 165,367	$ 56,132	$ 56,132
Provision for credit losses	(34,708)	24,469	85,669
Loan charge-offs	(743)	(654)	(1,819)
Loan recoveries	445	108	1,012
Net charge-offs	(298)	(546)	(807)
Balance at period end	$ 130,361	85,800	165,367
Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		2,762	2,762
Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		$ 2,983	$ 2,983

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CREDIT QUALITY ASSESSMENT - Collateral Dependent Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Credit Loss [Abstract]
Collateral dependent loans individually evaluated for credit loss with an allowance	$ 32,241	$ 20,717
Collateral dependent loans individually evaluated for credit loss without an allowance	49,757	77,001
Total individually evaluated collateral dependent loans	81,998	97,718
Allowance for credit losses related to loans evaluated individually	13,101	11,405
Allowance for credit losses related to loans evaluated collectively	117,260	153,962
Total allowance for credit losses	$ 130,361	$ 165,367	$ 85,800	$ 56,132

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CREDIT QUALITY ASSESSMENT - Allowance for Credit or Loan Losses by Respective Loan Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 165,367	$ 56,132	$ 56,132
Initial allowance on acquired Revere PCD loans			18,628
Provision/ (credit) for credit losses	(34,708)	24,469	85,669
Charge-offs	(743)	(654)	(1,819)
Recoveries	445	108	1,012
Net recoveries (charge-offs)	(298)	(546)	(807)
Balance at period end	130,361	85,800	165,367
Total loans	$ 10,446,866		$ 10,400,509
Allowance for credit losses to total loans ratio	1.25%		1.59%
Balance of loans individually evaluated for credit loss	$ 81,998		$ 97,718
Allowance related to loans evaluated individually	$ 13,101		$ 11,405
Individual allowance to loans evaluated individually ratio	15.98%		11.67%
Balance of loans collectively evaluated for credit loss	$ 10,364,868		$ 10,302,791
Allowance related to loans evaluated collectively	$ 117,260		$ 153,962
Collective allowance to loans evaluated collectively ratio	1.13%		1.49%
Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		2,762	$ 2,762
Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		2,983	2,983
Commercial investor real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	$ 3,652,418		3,634,720
Commercial owner-occupied real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	1,644,848		1,642,216
Commercial AD&C
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	1,051,013		1,050,973
Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	1,022,546		1,105,179
Residential construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	171,028		182,619
Commercial real estate: | Commercial investor real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	57,404	18,407	18,407
Initial allowance on acquired Revere PCD loans			7,973
Provision/ (credit) for credit losses	(8,981)		33,431
Charge-offs	0		(411)
Recoveries	27		15
Net recoveries (charge-offs)	27		(396)
Balance at period end	48,450		57,404
Total loans	$ 3,652,418		$ 3,634,720
Allowance for credit losses to total loans ratio	1.33%		1.58%
Balance of loans individually evaluated for credit loss	$ 42,776		$ 45,227
Allowance related to loans evaluated individually	$ 2,988		$ 1,273
Individual allowance to loans evaluated individually ratio	6.99%		2.81%
Balance of loans collectively evaluated for credit loss	$ 3,609,642		$ 3,589,493
Allowance related to loans evaluated collectively	$ 45,462		$ 56,131
Collective allowance to loans evaluated collectively ratio	1.26%		1.56%
Commercial real estate: | Commercial investor real estate | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		1,114	$ 1,114
Commercial real estate: | Commercial investor real estate | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		(3,125)	(3,125)
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 20,061	6,884	6,884
Initial allowance on acquired Revere PCD loans			2,782
Provision/ (credit) for credit losses	(5,594)		10,008
Charge-offs	0		0
Recoveries	0		0
Net recoveries (charge-offs)	0		0
Balance at period end	14,467		20,061
Total loans	$ 1,644,848		$ 1,642,216
Allowance for credit losses to total loans ratio	0.88%		1.22%
Balance of loans individually evaluated for credit loss	$ 8,316		$ 11,561
Allowance related to loans evaluated individually	$ 0		$ 0
Individual allowance to loans evaluated individually ratio	0.00%		0.00%
Balance of loans collectively evaluated for credit loss	$ 1,636,532		$ 1,630,655
Allowance related to loans evaluated collectively	$ 14,467		$ 20,061
Collective allowance to loans evaluated collectively ratio	0.88%		1.23%
Commercial real estate: | Commercial owner-occupied real estate | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		0	$ 0
Commercial real estate: | Commercial owner-occupied real estate | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		387	387
Commercial real estate: | Commercial AD&C
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 22,157	7,590	7,590
Initial allowance on acquired Revere PCD loans			1,248
Provision/ (credit) for credit losses	760		10,743
Charge-offs	0		0
Recoveries	0		0
Net recoveries (charge-offs)	0		0
Balance at period end	22,917		22,157
Total loans	$ 1,051,013		$ 1,050,973
Allowance for credit losses to total loans ratio	2.18%		2.11%
Balance of loans individually evaluated for credit loss	$ 14,975		$ 15,044
Allowance related to loans evaluated individually	$ 603		$ 603
Individual allowance to loans evaluated individually ratio	4.03%		4.01%
Balance of loans collectively evaluated for credit loss	$ 1,036,038		$ 1,035,929
Allowance related to loans evaluated collectively	$ 22,314		$ 21,554
Collective allowance to loans evaluated collectively ratio	2.15%		2.08%
Commercial real estate: | Commercial AD&C | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		0	$ 0
Commercial real estate: | Commercial AD&C | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		2,576	2,576
Commercial Business
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Total loans	$ 8,759,388		8,595,457
Balance of loans individually evaluated for credit loss	13,831		23,648
Allowance related to loans evaluated individually	9,510		9,529
Commercial Business | Commercial business
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	46,806	11,395	11,395
Initial allowance on acquired Revere PCD loans			6,289
Provision/ (credit) for credit losses	(14,343)		24,374
Charge-offs	(650)		(491)
Recoveries	16		702
Net recoveries (charge-offs)	(634)		211
Balance at period end	31,829		46,806
Total loans	$ 2,411,109		$ 2,267,548
Allowance for credit losses to total loans ratio	1.32%		2.06%
Balance of loans individually evaluated for credit loss	$ 13,831		$ 23,648
Allowance related to loans evaluated individually	$ 9,510		$ 9,529
Individual allowance to loans evaluated individually ratio	68.76%		40.30%
Balance of loans collectively evaluated for credit loss	$ 2,397,278		$ 2,243,900
Allowance related to loans evaluated collectively	$ 22,319		$ 37,277
Collective allowance to loans evaluated collectively ratio	0.93%		1.66%
Commercial Business | Commercial business | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		1,549	$ 1,549
Commercial Business | Commercial business | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		2,988	2,988
Residential real estate: | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 11,295	8,803	8,803
Initial allowance on acquired Revere PCD loans			243
Provision/ (credit) for credit losses	(4,018)		3,016
Charge-offs	0		(484)
Recoveries	270		105
Net recoveries (charge-offs)	270		(379)
Balance at period end	7,547		11,295
Total loans	$ 1,022,546		$ 1,105,179
Allowance for credit losses to total loans ratio	0.74%		1.02%
Balance of loans individually evaluated for credit loss	$ 1,737		$ 1,874
Allowance related to loans evaluated individually	$ 0		$ 0
Individual allowance to loans evaluated individually ratio	0.00%		0.00%
Balance of loans collectively evaluated for credit loss	$ 1,020,809		$ 1,103,305
Allowance related to loans evaluated collectively	$ 7,547		$ 11,295
Collective allowance to loans evaluated collectively ratio	0.74%		1.02%
Residential real estate: | Residential mortgage | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		0	$ 0
Residential real estate: | Residential mortgage | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		(388)	(388)
Residential real estate: | Residential construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 1,502	967	967
Initial allowance on acquired Revere PCD loans			6
Provision/ (credit) for credit losses	(849)		798
Charge-offs	0		0
Recoveries	0		6
Net recoveries (charge-offs)	0		6
Balance at period end	653		1,502
Total loans	$ 171,028		$ 182,619
Allowance for credit losses to total loans ratio	0.38%		0.82%
Balance of loans individually evaluated for credit loss	$ 0		$ 0
Allowance related to loans evaluated individually	$ 0		$ 0
Individual allowance to loans evaluated individually ratio	0.00%		0.00%
Balance of loans collectively evaluated for credit loss	$ 171,028		$ 182,619
Allowance related to loans evaluated collectively	$ 653		$ 1,502
Collective allowance to loans evaluated collectively ratio	0.38%		0.82%
Residential real estate: | Residential construction | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		0	$ 0
Residential real estate: | Residential construction | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		(275)	(275)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 6,142	2,086	2,086
Initial allowance on acquired Revere PCD loans			87
Provision/ (credit) for credit losses	(1,683)		3,299
Charge-offs	(93)		(433)
Recoveries	132		184
Net recoveries (charge-offs)	39		(249)
Balance at period end	4,498		6,142
Total loans	$ 493,904		$ 517,254
Allowance for credit losses to total loans ratio	0.91%		1.19%
Balance of loans individually evaluated for credit loss	$ 363		$ 364
Allowance related to loans evaluated individually	$ 0		$ 0
Individual allowance to loans evaluated individually ratio	0.00%		0.00%
Balance of loans collectively evaluated for credit loss	$ 493,541		$ 516,890
Allowance related to loans evaluated collectively	$ 4,498		$ 6,142
Collective allowance to loans evaluated collectively ratio	0.91%		1.19%
Consumer | Revision of Prior Period, Reclassification, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		99	$ 99
Consumer | Revision of Prior Period, Accounting Standards Update, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period		$ 820	$ 820

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CREDIT QUALITY ASSESSMENT - Collateral dependent loans individually evaluated for credit loss (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	$ 32,241	$ 20,717
Allowance related to loans evaluated individually	13,101	11,405
Loans individually evaluated for credit loss without an allowance	49,757	77,001
Total individually evaluated collateral dependent loans	81,998	97,718
Total unpaid contractual principal balance	93,276	115,816
Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	28,862	17,419
Loans individually evaluated for credit loss without an allowance	44,726	71,764
Total individually evaluated collateral dependent loans	73,588	89,183
Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	2,806	2,709
Loans individually evaluated for credit loss without an allowance	3,333	3,509
Total individually evaluated collateral dependent loans	6,139	6,218
Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	573	589
Loans individually evaluated for credit loss without an allowance	1,698	1,728
Total individually evaluated collateral dependent loans	2,271	2,317
Commercial real estate: | Commercial investor real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	18,022	5,612
Allowance related to loans evaluated individually	2,988	1,273
Loans individually evaluated for credit loss without an allowance	24,754	39,615
Total individually evaluated collateral dependent loans	42,776	45,227
Total unpaid contractual principal balance	47,547	49,920
Commercial real estate: | Commercial investor real estate | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	17,686	4,913
Loans individually evaluated for credit loss without an allowance	24,754	39,615
Total individually evaluated collateral dependent loans	42,440	44,528
Commercial real estate: | Commercial investor real estate | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	336	699
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	336	699
Commercial real estate: | Commercial investor real estate | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit loss without an allowance	8,316	11,561
Total individually evaluated collateral dependent loans	8,316	11,561
Total unpaid contractual principal balance	10,306	15,309
Commercial real estate: | Commercial owner-occupied real estate | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	6,125	9,315
Total individually evaluated collateral dependent loans	6,125	9,315
Commercial real estate: | Commercial owner-occupied real estate | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	2,191	2,246
Total individually evaluated collateral dependent loans	2,191	2,246
Commercial real estate: | Commercial owner-occupied real estate | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Commercial real estate: | Commercial AD&C
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	1,446	1,328
Allowance related to loans evaluated individually	603	603
Loans individually evaluated for credit loss without an allowance	13,529	13,716
Total individually evaluated collateral dependent loans	14,975	15,044
Total unpaid contractual principal balance	16,157	16,040
Commercial real estate: | Commercial AD&C | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	1,446	1,328
Loans individually evaluated for credit loss without an allowance	13,529	13,716
Total individually evaluated collateral dependent loans	14,975	15,044
Commercial real estate: | Commercial AD&C | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Commercial real estate: | Commercial AD&C | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Commercial Business
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	12,773	13,777
Allowance related to loans evaluated individually	9,510	9,529
Loans individually evaluated for credit loss without an allowance	1,058	9,871
Total individually evaluated collateral dependent loans	13,831	23,648
Total unpaid contractual principal balance	16,088	30,958
Commercial Business | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	9,730	11,178
Loans individually evaluated for credit loss without an allowance	318	9,118
Total individually evaluated collateral dependent loans	10,048	20,296
Commercial Business | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	2,470	2,010
Loans individually evaluated for credit loss without an allowance	629	627
Total individually evaluated collateral dependent loans	3,099	2,637
Commercial Business | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	573	589
Loans individually evaluated for credit loss without an allowance	111	126
Total individually evaluated collateral dependent loans	684	715
Residential real estate: | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit loss without an allowance	1,737	1,874
Total individually evaluated collateral dependent loans	1,737	1,874
Total unpaid contractual principal balance	2,814	3,225
Residential real estate: | Residential mortgage | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Residential real estate: | Residential mortgage | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	150	272
Total individually evaluated collateral dependent loans	150	272
Residential real estate: | Residential mortgage | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	1,587	1,602
Total individually evaluated collateral dependent loans	1,587	1,602
Residential real estate: | Residential construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Total unpaid contractual principal balance	0	0
Residential real estate: | Residential construction | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Residential real estate: | Residential construction | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Residential real estate: | Residential construction | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Allowance related to loans evaluated individually	0	0
Loans individually evaluated for credit loss without an allowance	363	364
Total individually evaluated collateral dependent loans	363	364
Total unpaid contractual principal balance	364	364
Consumer | Non-accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	0	0
Consumer | Non-accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	363	364
Total individually evaluated collateral dependent loans	363	364
Consumer | Accruing | Restructured
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for credit loss with an allowance	0	0
Loans individually evaluated for credit loss without an allowance	0	0
Total individually evaluated collateral dependent loans	$ 0	$ 0

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CREDIT QUALITY ASSESSMENT - Non-accrual Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	$ 104,183	$ 72,562
Contractual interest income due on non- accrual loans during the period	1,732	18,301
Commercial real estate: | Commercial investor real estate
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	44,002	26,849
Contractual interest income due on non- accrual loans during the period	649	6,547
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	9,939	6,605
Contractual interest income due on non- accrual loans during the period	185	2,741
Commercial real estate: | Commercial AD&C
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	15,010	4,267
Contractual interest income due on non- accrual loans during the period	256	4,505
Commercial Business
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	18,040	16,532
Contractual interest income due on non- accrual loans during the period	428	2,858
Residential real estate: | Residential mortgage
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	9,903	11,634
Contractual interest income due on non- accrual loans during the period	110	918
Residential real estate: | Residential construction
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	0	0
Contractual interest income due on non- accrual loans during the period	0	0
Consumer
Financing Receivable, Nonaccrual [Line Items]
Average non-accrual loans for the period	7,289	6,675
Contractual interest income due on non- accrual loans during the period	$ 104	$ 732

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CREDIT QUALITY ASSESSMENT - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period increase (decrease)	$ 0	$ 0
Other real estate owned	1,354	1,455
Non-accrual status
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans placed on non-accrual	421	85,286
Restructured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans restructured during the period	500	4,500
Individual reserves	300	1,000
Other real estate owned	$ 1,400	$ 1,500

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CREDIT QUALITY ASSESSMENT - Information on the credit quality of loan portfolio under the new CECL (Detail) - Non-accrual status - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 112,361	$ 38,632
PCD loans designed as non-accrual		13,084
Loans placed on non-accrual	421	85,286
Non-accrual balances transferred to OREO	0	(70)
Non-accrual balances charged-off	(699)	(1,394)
Net payments or draws	(16,028)	(21,201)
Non-accrual loans brought current	(55)	(1,976)
Balance at end of period	96,000	112,361
Commercial real estate: | Commercial investor real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	45,227	8,437
PCD loans designed as non-accrual		9,544
Loans placed on non-accrual	0	37,882
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	(411)
Net payments or draws	(2,451)	(10,225)
Non-accrual loans brought current	0	0
Balance at end of period	42,776	45,227
Commercial real estate: | Commercial owner-occupied real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	11,561	4,148
PCD loans designed as non-accrual		0
Loans placed on non-accrual	0	8,572
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	(3,245)	(1,059)
Non-accrual loans brought current	0	(100)
Balance at end of period	8,316	11,561
Commercial real estate: | Commercial AD&C
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	15,044	829
PCD loans designed as non-accrual		0
Loans placed on non-accrual	0	15,844
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	(69)	(1,629)
Non-accrual loans brought current	0	0
Balance at end of period	14,975	15,044
Commercial Business
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	22,933	8,450
PCD loans designed as non-accrual		2,539
Loans placed on non-accrual	84	17,442
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(650)	(446)
Net payments or draws	(9,220)	(4,169)
Non-accrual loans brought current	0	(883)
Balance at end of period	13,147	22,933
Residential real estate: | Residential mortgage
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	10,212	12,661
PCD loans designed as non-accrual		8
Loans placed on non-accrual	140	1,485
Non-accrual balances transferred to OREO	0	(70)
Non-accrual balances charged-off	0	(416)
Net payments or draws	(759)	(2,598)
Non-accrual loans brought current	0	(858)
Balance at end of period	9,593	10,212
Residential real estate: | Residential construction
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	0	0
PCD loans designed as non-accrual		0
Loans placed on non-accrual	0	0
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	0	0
Non-accrual loans brought current	0	0
Balance at end of period	0	0
Consumer
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	7,384	4,107
PCD loans designed as non-accrual		993
Loans placed on non-accrual	197	4,061
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(49)	(121)
Net payments or draws	(284)	(1,521)
Non-accrual loans brought current	(55)	(135)
Balance at end of period	$ 7,193	$ 7,384

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CREDIT QUALITY ASSESSMENT - Credit Quality of Loan Portfolio, New (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 10,446,866	$ 10,400,509
Performing loans:
Financing Receivable, Past Due [Line Items]
Current	10,296,660	10,226,191
Total performing loans	10,348,166	10,285,057
Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	96,000	112,361
Loans greater than 90 days past due	429	774
Restructured loans	2,271	2,317
Total non-performing loans	98,700	115,452
30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	41,925	46,812
60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	9,581	12,054
Commercial investor real estate
Financing Receivable, Past Due [Line Items]
Total	3,652,418	3,634,720
Commercial owner-occupied real estate
Financing Receivable, Past Due [Line Items]
Total	1,644,848	1,642,216
Commercial AD&C
Financing Receivable, Past Due [Line Items]
Total	1,051,013	1,050,973
Residential mortgage
Financing Receivable, Past Due [Line Items]
Total	1,022,546	1,105,179
Residential construction
Financing Receivable, Past Due [Line Items]
Total	171,028	182,619
Commercial real estate: | Commercial investor real estate
Financing Receivable, Past Due [Line Items]
Total	3,652,418	3,634,720
Commercial real estate: | Commercial investor real estate | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	3,587,859	3,571,184
Total performing loans	3,609,642	3,589,360
Commercial real estate: | Commercial investor real estate | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	42,776	45,227
Loans greater than 90 days past due	0	133
Restructured loans	0	0
Total non-performing loans	42,776	45,360
Commercial real estate: | Commercial investor real estate | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	17,870	14,046
Commercial real estate: | Commercial investor real estate | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	3,913	4,130
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Past Due [Line Items]
Total	1,644,848	1,642,216
Commercial real estate: | Commercial owner-occupied real estate | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	1,633,446	1,624,265
Total performing loans	1,636,532	1,630,655
Commercial real estate: | Commercial owner-occupied real estate | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	8,316	11,561
Loans greater than 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	8,316	11,561
Commercial real estate: | Commercial owner-occupied real estate | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	3,086	6,390
Commercial real estate: | Commercial owner-occupied real estate | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	0	0
Commercial real estate: | Commercial AD&C
Financing Receivable, Past Due [Line Items]
Total	1,051,013	1,050,973
Commercial real estate: | Commercial AD&C | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	1,031,055	1,033,057
Total performing loans	1,036,038	1,035,929
Commercial real estate: | Commercial AD&C | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	14,975	15,044
Loans greater than 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	14,975	15,044
Commercial real estate: | Commercial AD&C | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	4,983	29
Commercial real estate: | Commercial AD&C | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	0	2,843
Commercial Business
Financing Receivable, Past Due [Line Items]
Total	8,759,388	8,595,457
Commercial Business | Commercial business
Financing Receivable, Past Due [Line Items]
Total	2,411,109	2,267,548
Commercial Business | Commercial business | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	2,392,818	2,238,617
Total performing loans	2,397,247	2,243,739
Commercial Business | Commercial business | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	13,147	22,933
Loans greater than 90 days past due	31	161
Restructured loans	684	715
Total non-performing loans	13,862	23,809
Commercial Business | Commercial business | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	3,983	4,859
Commercial Business | Commercial business | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	446	263
Residential real estate: | Residential mortgage
Financing Receivable, Past Due [Line Items]
Total	1,022,546	1,105,179
Residential real estate: | Residential mortgage | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	997,837	1,073,963
Total performing loans	1,010,968	1,092,885
Residential real estate: | Residential mortgage | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	9,593	10,212
Loans greater than 90 days past due	398	480
Restructured loans	1,587	1,602
Total non-performing loans	11,578	12,294
Residential real estate: | Residential mortgage | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	9,593	16,213
Residential real estate: | Residential mortgage | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	3,538	2,709
Residential real estate: | Residential construction
Financing Receivable, Past Due [Line Items]
Total	171,028	182,619
Residential real estate: | Residential construction | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	170,365	182,557
Total performing loans	171,028	182,619
Residential real estate: | Residential construction | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	0	0
Loans greater than 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	0	0
Residential real estate: | Residential construction | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	601	0
Residential real estate: | Residential construction | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	62	62
Consumer
Financing Receivable, Past Due [Line Items]
Total	493,904	517,254
Consumer | Performing loans:
Financing Receivable, Past Due [Line Items]
Current	483,280	502,548
Total performing loans	486,711	509,870
Consumer | Non-performing loans:
Financing Receivable, Past Due [Line Items]
Non-accrual loans	7,193	7,384
Loans greater than 90 days past due	0	0
Restructured loans	0	0
Total non-performing loans	7,193	7,384
Consumer | 30-59 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	1,809	5,275
Consumer | 60-89 days | Performing loans:
Financing Receivable, Past Due [Line Items]
Past due	$ 1,622	$ 2,047

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CREDIT QUALITY ASSESSMENT - Information about credit quality indicator by year of origination (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 961,411	$ 3,305,720
2020	2,937,967	1,774,275
2019	1,646,238	1,179,845
2018	1,091,611	1,016,641
2017	961,954	866,898
Prior	1,896,722	1,242,626
Revolving Loans	950,963	1,014,504
Total	10,446,866	10,400,509
Commercial investor real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2021	204,744	922,059
2020	882,937	767,459
2019	715,618	466,934
2018	469,104	470,150
2017	458,689	470,019
Prior	892,482	504,568
Revolving Loans	28,844	33,531
Total	3,652,418	3,634,720
Commercial investor real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	194,465	910,426
2020	881,973	763,214
2019	707,450	448,406
2018	452,909	448,698
2017	429,839	469,077
Prior	876,375	498,384
Revolving Loans	28,844	33,531
Total	3,571,855	3,571,736
Commercial investor real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	10,000	11,044
2020	527	0
2019	1,993	4,879
2018	2,640	833
2017	701	269
Prior	2,646	27
Revolving Loans	0	0
Total	18,507	17,052
Commercial investor real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	279	589
2020	437	4,245
2019	6,175	13,649
2018	13,555	20,619
2017	28,149	673
Prior	13,461	6,157
Revolving Loans	0	0
Total	62,056	45,932
Commercial investor real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Commercial owner-occupied real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2021	47,661	289,210
2020	290,210	389,393
2019	384,594	239,670
2018	228,156	197,841
2017	193,940	205,278
Prior	495,494	319,160
Revolving Loans	4,793	1,664
Total	1,644,848	1,642,216
Commercial owner-occupied real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	47,661	285,310
2020	287,070	385,058
2019	375,951	234,578
2018	222,539	192,634
2017	188,795	204,925
Prior	485,151	306,840
Revolving Loans	4,793	1,664
Total	1,611,960	1,611,009
Commercial owner-occupied real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	2,290
2020	1,871	0
2019	4,327	3,027
2018	3,586	4,742
2017	4,698	134
Prior	5,279	4,079
Revolving Loans	0	0
Total	19,761	14,272
Commercial owner-occupied real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1,610
2020	1,269	4,335
2019	4,316	2,065
2018	2,031	465
2017	447	219
Prior	5,064	8,009
Revolving Loans	0	0
Total	13,127	16,703
Commercial owner-occupied real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	232
Revolving Loans	0	0
Total	0	232
Commercial AD&C
Financing Receivable, Credit Quality Indicator [Line Items]
2021	175,861	488,781
2020	374,686	262,428
2019	245,642	149,703
2018	110,557	64,008
2017	60,779	2,932
Prior	2,843	2,357
Revolving Loans	80,645	80,764
Total	1,051,013	1,050,973
Commercial AD&C | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	174,120	485,631
2020	373,158	261,537
2019	244,751	149,703
2018	110,557	50,192
2017	47,150	89
Prior	0	2,357
Revolving Loans	80,645	80,764
Total	1,030,381	1,030,273
Commercial AD&C | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	639	1,711
2020	1,073	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Total	1,712	1,711
Commercial AD&C | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,102	1,439
2020	455	891
2019	891	0
2018	0	13,816
2017	13,629	2,843
Prior	2,843	0
Revolving Loans	0	0
Total	18,920	18,989
Commercial AD&C | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Total	0	0
Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
2021	44,604	236,909
2020	218,269	85,106
2019	78,965	158,382
2018	130,593	188,970
2017	165,064	143,557
Prior	385,051	292,255
Revolving Loans	0	0
Total	1,022,546	1,105,179
Residential mortgage | 660-850
Financing Receivable, Credit Quality Indicator [Line Items]
2021	43,362	229,033
2020	209,544	74,054
2019	66,700	138,824
2018	113,850	172,493
2017	153,972	129,701
Prior	336,256	251,065
Revolving Loans	0	0
Total	923,684	995,170
Residential mortgage | 600-659
Financing Receivable, Credit Quality Indicator [Line Items]
2021	745	4,824
2020	4,962	7,706
2019	9,539	10,763
2018	8,498	11,719
2017	8,044	8,173
Prior	25,851	21,424
Revolving Loans	0	0
Total	57,639	64,609
Residential mortgage | 540-599
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	350
2020	1,445	1,238
2019	1,181	5,219
2018	5,063	2,608
2017	1,930	4,791
Prior	14,187	10,167
Revolving Loans	0	0
Total	23,806	24,373
Residential mortgage | less than 540
Financing Receivable, Credit Quality Indicator [Line Items]
2021	497	2,702
2020	2,318	2,108
2019	1,545	3,576
2018	3,182	2,150
2017	1,118	892
Prior	8,757	9,599
Revolving Loans	0	0
Total	17,417	21,027
Residential construction
Financing Receivable, Credit Quality Indicator [Line Items]
2021	27,097	115,201
2020	102,244	47,836
2019	23,802	14,543
2018	14,166	2,805
2017	1,248	2,062
Prior	2,107	0
Revolving Loans	364	172
Total	171,028	182,619
Residential construction | 660-850
Financing Receivable, Credit Quality Indicator [Line Items]
2021	27,097	112,604
2020	101,290	44,647
2019	21,059	14,543
2018	14,166	2,805
2017	1,248	1,693
Prior	1,738	0
Revolving Loans	364	172
Total	166,962	176,464
Residential construction | 600-659
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1,743
2020	0	3,189
2019	2,743	0
2018	0	0
2017	0	0
Prior	369	0
Revolving Loans	0	0
Total	3,112	4,932
Residential construction | 540-599
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	369
Prior	0	0
Revolving Loans	0	0
Total	0	369
Residential construction | less than 540
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	854
2020	954	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Total	954	854
Commercial Business
Financing Receivable, Credit Quality Indicator [Line Items]
Total	8,759,388	8,595,457
Commercial Business | Commercial business
Financing Receivable, Credit Quality Indicator [Line Items]
2021	460,040	1,249,771
2020	1,066,322	215,623
2019	191,501	144,348
2018	133,497	89,205
2017	79,373	38,836
Prior	78,545	87,689
Revolving Loans	401,831	442,076
Total	2,411,109	2,267,548
Commercial Business | Commercial business | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	459,815	1,244,822
2020	1,059,494	208,682
2019	179,214	138,861
2018	129,096	86,830
2017	77,302	34,498
Prior	71,681	81,760
Revolving Loans	396,258	433,016
Total	2,372,860	2,228,469
Commercial Business | Commercial business | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1,929
2020	2,043	1,382
2019	8,793	1,119
2018	1,063	708
2017	1,214	309
Prior	845	621
Revolving Loans	3,792	4,319
Total	17,750	10,387
Commercial Business | Commercial business | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	225	2,914
2020	4,785	4,564
2019	3,494	3,519
2018	3,338	1,631
2017	857	2,745
Prior	6,019	3,456
Revolving Loans	1,781	1,829
Total	20,499	20,658
Commercial Business | Commercial business | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	106
2020	0	995
2019	0	849
2018	0	36
2017	0	1,284
Prior	0	1,852
Revolving Loans	0	2,912
Total	0	8,034
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,404	3,789
2020	3,299	6,430
2019	6,116	6,265
2018	5,538	3,662
2017	2,861	4,214
Prior	40,200	36,597
Revolving Loans	434,486	456,297
Total	493,904	517,254
Consumer | 660-850
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,054	2,575
2020	2,200	4,609
2019	4,263	5,112
2018	4,213	2,110
2017	1,567	2,614
Prior	27,406	24,444
Revolving Loans	400,050	417,737
Total	440,753	459,201
Consumer | 600-659
Financing Receivable, Credit Quality Indicator [Line Items]
2021	247	374
2020	265	445
2019	1,138	334
2018	484	428
2017	259	467
Prior	6,092	5,401
Revolving Loans	17,590	21,052
Total	26,075	28,501
Consumer | 540-599
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	89
2020	105	1,216
2019	564	294
2018	272	339
2017	270	601
Prior	3,425	3,926
Revolving Loans	6,938	6,153
Total	11,574	12,618
Consumer | less than 540
Financing Receivable, Credit Quality Indicator [Line Items]
2021	103	751
2020	729	160
2019	151	525
2018	569	785
2017	765	532
Prior	3,277	2,826
Revolving Loans	9,908	11,355
Total	$ 15,502	$ 16,934

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CREDIT QUALITY ASSESSMENT - Restructured Loans at the date of Restructuring For Specific Segments of the Loan Portfolio (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 512	$ 4,533
Individual allowance	332	1,020
Restructured and subsequently defaulted	0	0
All Other Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	0	549
Individual allowance	0	0
Restructured and subsequently defaulted	0	0
Troubled debt restructurings:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	929
Restructured non-accruing	512	3,604
Troubled debt restructurings: | All Other Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	549
Restructured non-accruing	0	0
Commercial real estate: | Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	0	723
Individual allowance	0	65
Restructured and subsequently defaulted	0	0
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	0	930
Individual allowance	0	0
Restructured and subsequently defaulted	0	0
Commercial real estate: | Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	0	0
Individual allowance	0	0
Restructured and subsequently defaulted	0	0
Commercial real estate: | Troubled debt restructurings: | Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	723
Commercial real estate: | Troubled debt restructurings: | Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	930
Commercial real estate: | Troubled debt restructurings: | Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	0
Restructured non-accruing	0	0
Commercial Business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	512	2,331
Individual allowance	332	955
Restructured and subsequently defaulted	0	0
Commercial Business | Troubled debt restructurings:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructured accruing	0	380
Restructured non-accruing	$ 512	$ 1,951

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GOODWILL AND OTHER INTANGIBLE ASSETS - Gross Carrying Amounts and Accumulated Amortization (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 42,944	$ 42,944
Accumulated Amortization	(12,120)	(10,423)
Net Carrying Amount	30,824	32,521
Goodwill	370,223	370,223
Goodwill	370,223	370,223
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,038	29,038
Accumulated Amortization	(9,169)	(7,969)
Net Carrying Amount	$ 19,869	$ 21,069
Core deposit intangibles | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life	8 years 2 months 12 days	8 years 4 months 24 days
Other identifiable intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 13,906	$ 13,906
Accumulated Amortization	(2,951)	(2,454)
Net Carrying Amount	$ 10,955	$ 11,452
Other identifiable intangibles | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life	10 years 6 months	10 years 8 months 12 days

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GOODWILL AND OTHER INTANGIBLE ASSETS (Net Carrying Amount of Goodwill By Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill [Roll Forward]
Beginning balance	$ 370,223
No Activity	0
Ending balance	370,223
Community Banking
Goodwill [Roll Forward]
Beginning balance	331,688
No Activity		$ 0
Ending balance	331,688
Insurance
Goodwill [Roll Forward]
Beginning balance	6,788
No Activity		0
Ending balance	6,788
Investment Management
Goodwill [Roll Forward]
Beginning balance	31,747
No Activity		$ 0
Ending balance	$ 31,747

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GOODWILL AND OTHER INTANGIBLE ASSETS (Estimated Future Amortization Expense for Amortizing Intangibles) (Detail) $ in Thousands	Mar. 31, 2021 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remaining 2021	$ 4,903
2022	5,844
2023	5,089
2024	4,333
2025	3,567
Thereafter	7,088
Total amortizing intangible assets	$ 30,824

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DEPOSITS - Composition of Deposits (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Noninterest-bearing deposits	$ 3,770,852	$ 3,325,547
Interest-bearing deposits:
Demand	1,395,209	1,292,164
Money market savings	3,371,400	3,339,645
Regular savings	465,125	418,051
Time deposits of less than $100,000	474,684	509,919
Time deposits greater than $100,000 and less than $250,000	774,668	670,717
Time deposits of $250,000 or more	425,814	477,026
Total interest-bearing deposits	6,906,900	6,707,522
Total deposits	$ 10,677,752	$ 10,033,069

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BORROWINGS - Narrative (Detail) - USD ($)			3 Months Ended
	Apr. 01, 2020	Nov. 05, 2019	Mar. 31, 2021	Dec. 31, 2020	Oct. 05, 2020
Debt Instrument [Line Items]
Long-term borrowings			$ 227,044,000	$ 227,088,000
Long-term debt			516,362,000	1,149,320,000
FHLB advances			100,000,000.0	379,100,000
Federal Home Loan Bank Advances
Debt Instrument [Line Items]
FHLB advances repaid			279,000,000.0
FHLB prepayment penalties			9,100,000
Maximum borrowing capacity			3,000,000,000.0	3,000,000,000.0
Federal Home Loan Bank Advances | Residential mortgage
Debt Instrument [Line Items]
Loans pledged as collateral			897,800,000	1,000,000,000.0
Federal Home Loan Bank Advances | Commercial real estate loans
Debt Instrument [Line Items]
Loans pledged as collateral			2,800,000,000	2,800,000,000
Federal Home Loan Bank Advances | Home equity lines of credit
Debt Instrument [Line Items]
Loans pledged as collateral			230,500,000	226,200,000
Federal Home Loan Bank Advances | Multifamily loans
Debt Instrument [Line Items]
Loans pledged as collateral			259,400,000	237,600,000
Federal Reserve and correspondent banks
Debt Instrument [Line Items]
Maximum borrowing capacity			420,400,000	276,200,000
Line of credit			0	0
Unsecured lines of credit, correspondent banks
Debt Instrument [Line Items]
Maximum borrowing capacity			1,100,000,000	1,100,000,000
Line of credit			60,000,000.0	390,000,000.0
Subordinated Debt
Debt Instrument [Line Items]
Add: Purchase accounting premium			1,552,000	$ 1,669,000
Subordinated Debt | Fixed Floating Rate Subordinated Notes
Debt Instrument [Line Items]
Long-term borrowings		$ 175,000,000.0
Interest rate		4.25%
Basis spread on variable rate		2.62%
Unamortized discount (premium) and debt issuance costs, net		$ 2,900,000
Subordinated Debt | WashingtonFirst Bankshares Inc
Debt Instrument [Line Items]
Long-term borrowings			$ 25,000,000.0
Interest rate			4.81%		6.00%
Basis spread on variable rate				4.57%
Add: Purchase accounting premium			$ 2,200,000
Debt instrument, term			10 years
Subordinated Debt | WashingtonFirst Bankshares Inc | Tier 2 Capital
Debt Instrument [Line Items]
Long-term borrowings			$ 20,000,000.0
Subordinated Debt | Revere acquisition
Debt Instrument [Line Items]
Long-term borrowings	$ 31,000,000.0
Interest rate	5.625%		5.625%
Basis spread on variable rate			4.41%
Add: Purchase accounting premium	$ 200,000
Debt instrument, term	10 years
Retail Repurchase Agreements
Debt Instrument [Line Items]
Long-term debt			$ 129,300,000	$ 153,200,000
Federal Funds Purchased
Debt Instrument [Line Items]
Long-term debt			60,000,000.0	$ 390,000,000.0
Federal funds under the PPPLF program
Debt Instrument [Line Items]
Long-term debt			0
Remaining borrowing capacity			$ 1,300,000,000

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BORROWINGS - Schedule of Subordinated Borrowing (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Oct. 05, 2020	Apr. 01, 2020
Subordinated Borrowing [Line Items]
Long-term borrowings	$ 227,044	$ 227,088
Subordinated Debt
Subordinated Borrowing [Line Items]
Subordinated debt, gross	231,000	231,000
Less: Debt held as investments by Sandy Spring	(3,000)	(3,000)
Add: Purchase accounting premium	1,552	1,669
Less: Debt issuance costs	(2,508)	(2,581)
Subordinated Debt | Fixed Floating
Subordinated Borrowing [Line Items]
Subordinated debt, gross	$ 175,000	175,000
Interest rate	4.25%
Subordinated Debt | WashingtonFirst Bankshares Inc
Subordinated Borrowing [Line Items]
Subordinated debt, gross	$ 25,000	25,000
Add: Purchase accounting premium	2,200
Long-term borrowings	$ 25,000
Interest rate	4.81%		6.00%
Subordinated Debt | Revere acquisition
Subordinated Borrowing [Line Items]
Subordinated debt, gross	$ 31,000	$ 31,000
Add: Purchase accounting premium				$ 200
Long-term borrowings				$ 31,000
Interest rate	5.625%			5.625%

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STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2018
Equity [Line Items]
Stock repurchased and retired (in shares)	820,328
Repurchase Plan 2020 | Common Stock
Equity [Line Items]
Number of shares authorized to be repurchased (in shares)		2,350,000
Repurchase Plan 2018 | Common Stock
Equity [Line Items]
Stock repurchased (in shares)	0
Shares available for issuance (in shares)			1,800,000
Stock repurchased and retired (in shares)	820,328	1,488,519
Stock repurchased and retired	$ 25.7	$ 50.0
Common stock repurchased, average price (in dollars per share)		$ 33.58

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SHARE BASED COMPENSATION - Narrative (Detail) - 2015 Omnibus Incentive Plan - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	May 06, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)			1,500,000
Shares available for issuance (in shares)	797,157
Expiration period	10 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period	7 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period	10 years
Stock Options and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized compensation expense	$ 0.9	$ 0.8
Restricted shares, Restricted stock units and Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 11.8
Expected cost recognition weighted average period	2 years 8 months 12 days
Shares issued (in shares)	119,329
Performance Shares | 3 Year Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	32,728
Performance period	3 years
Time Based Shares | 3 or 5 Year Vesting Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	86,601
Time Based Shares | 3 or 5 Year Vesting Period | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Stock Options | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0

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SHARE BASED COMPENSATION - Summary of Share Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Number of Common Shares
Beginning balance (in shares)	430,038
Granted (in shares)	0
Exercised (in shares)	(102,365)	(6,013)
Forfeited (in shares)	0
Expired (in shares)	0
Ending balance (in shares)	327,673		430,038
Exercisable at end of period (in shares)	322,908
Weighted Average Exercise Share Price
Beginning balance (in dollars per share)	$ 14.97
Granted (in dollars per share)	0
Exercised (in dollars per share)	14.96
Forfeited (in dollars per share)	0
Expired (in dollars per share)	0
Ending balance (in dollars per share)	14.98		$ 14.97
Exercisable at end of period (in dollars per share)	$ 14.63
Weighted Average Contractual Remaining Life (Years)
Balance at end of period	2 years 7 months 6 days		3 years
Exercisable at end of period	2 years 7 months 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract]
Beginning balance	$ 6,828
Exercised	2,381
Ending balance	9,045		$ 6,828
Exercisable at end of period	$ 9,017

XML

SHARE BASED COMPENSATION - Summary of Activity Restricted Stock (Detail) - Restricted Stock	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Number of Common Shares/Units
Nonvested beginning balance (in shares) | shares	391,683
Granted (in shares) | shares	119,329
Vested (in shares) | shares	(13,669)
Forfeited (in shares) | shares	(3,988)
Nonvested ending balance (in shares) | shares	493,355
Weighted Average Grant-Date Fair Value
Nonvested beginning balance (in dollars per share) | $ / shares	$ 29.50
Granted (in dollars per share) | $ / shares	40.70
Vested (in dollars per share) | $ / shares	37.64
Forfeited (in dollars per share) | $ / shares	34.86
Nonvested ending balance (in dollars per share) | $ / shares	$ 31.94

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PENSION PLAN (Net Periodic Benefit Cost) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Retirement Benefits [Abstract]
Interest cost on projected benefit obligation	$ 318	$ 359
Expected return on plan assets	(312)	(456)
Recognized net actuarial loss	227	219
Net periodic benefit cost	$ 233	$ 122

XML

PENSION PLAN - Narrative (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Retirement Benefits [Abstract]
Contributions by employer	$ 0.0

XML

NET INCOME/ (LOSS) PER COMMON SHARE (Calculation of Net Income per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 75,464	$ 9,987
Distributed and undistributed earnings allocated to participating securities	(640)	(68)
Net income attributable to common shareholders	$ 74,824	$ 9,919
Total weighted average outstanding shares (in shares)	47,530,000	34,979,000
Less: weighted average participating securities (in shares)	(411,000)	(314,000)
Basic weighted average common shares (in shares)	47,119,000	34,665,000
Dilutive weighted average common stock equivalents (in shares)	296,000	78,000
Diluted weighted average common shares (in shares)	47,415,000	34,743,000
Basic net income per common share (in dollars per share)	$ 1.59	$ 0.29
Diluted net income per common share (in dollars per share)	$ 1.58	$ 0.28
Anti-dilutive shares (in shares)	3,000	9,000

XML

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Net Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 18,705
Total other comprehensive income/ (loss)	(21,357)	$ 10,676
Ending Balance	(2,652)
Unrealized Gains on Investments Available-for-Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	28,175	4,000
Other comprehensive loss before reclassification, net of tax	(21,478)	10,639
Reclassifications from accumulated other comprehensive income, net of tax	(43)	(127)
Total other comprehensive income/ (loss)	(21,521)	10,512
Ending Balance	6,654	14,512
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(9,470)	(8,332)
Other comprehensive loss before reclassification, net of tax	0	0
Reclassifications from accumulated other comprehensive income, net of tax	164	164
Total other comprehensive income/ (loss)	164	164
Ending Balance	(9,306)	(8,168)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	18,705	(4,332)
Other comprehensive loss before reclassification, net of tax	(21,478)	10,639
Reclassifications from accumulated other comprehensive income, net of tax	121	37
Total other comprehensive income/ (loss)	(21,357)	10,676
Ending Balance	$ (2,652)	$ 6,344

XML

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassification Adjustments Out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Unrealized gains/(losses) on investments available-for-sale Affected line item in the Statements of Income:
Investment securities gains	$ 58	$ 169
Income before taxes	58	169
Tax expense	(15)	(42)
Net income	43	127
Amortization of defined benefit pension plan items Affected line item in the Statements of Income:
Recognized actuarial loss	(227)	(219)
Loss before taxes	(227)	(219)
Tax benefit	63	55
Net loss	$ (164)	$ (164)

XML

LEASES - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Lease liability	$ 74,219	$ 74,982
Operating lease ROU assets	$ 64,455	$ 65,215
Minimum
Lessee, Lease, Description [Line Items]
Renewal term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Renewal term	20 years
Lease operation commence in 2021
Lessee, Lease, Description [Line Items]
Lease liability	$ 1,900
Operating lease ROU assets	1,600
Tenant allowance	$ 200

XML

LEASES - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Components of lease expense:
Operating lease cost (resulting from lease payments)	$ 3,151	$ 2,730
ROU assets obtained in the exchange for lease liabilities due to new leases and acquistions	$ 803	0
Weighted average remaining lease term of operating leases	9 years 4 months 24 days		9 years 6 months
Weighted average discount rate of operating leases	2.97%		3.04%
Supplemental cash flow information related to leases:
Operating cash flows from operating leases	$ 3,280	2,082
Operating lease ROU assets	64,455		$ 65,215
Lease liability	74,219		$ 74,982
Revere Bank And RPJ
Components of lease expense:
ROU assets obtained in the exchange for lease liabilities due to new leases and acquistions	$ 0	$ 311

XML

LEASES - Maturities of operating lease liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remaining 2021	$ 9,346
2022	11,068
2023	11,054
2024	9,251
2025	7,537
Thereafter	38,522
Total undiscounted lease payments	86,778
Less: Present value discount	(12,559)
Lease liability	$ 74,219	$ 74,982

XML

DERIVATIVES - Narrative (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Commercial Loan | Not Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Notional amount	$ 374.7	$ 320.5

XML

FAIR VALUE (Financial Assets and Liabilities at Dates Indicated that Were Accounted for or Disclosed at Fair Value) (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	$ 1,427,880	$ 1,348,021
Residential mortgage loans held for sale (at fair value)	84,930	78,294
Residential Mortgage Loans Held For Sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Residential mortgage loans held for sale (at fair value)		75,500	$ 83,300
U.S. treasuries and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	48,086	43,297
State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	366,032	390,367
Mortgage-backed and asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	1,006,179	904,432
Corporate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	7,583	9,925
Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	1,427,880	1,348,021
Total assets	1,519,212	1,435,498
Total liabilities	(6,402)	(9,183)
Fair Value, Recurring | Residential Mortgage Loans Held For Sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Residential mortgage loans held for sale	84,930	78,294
Fair Value, Recurring | U.S. treasuries and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	48,086	43,297
Fair Value, Recurring | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	366,032	390,367
Fair Value, Recurring | Mortgage-backed and asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	1,006,179	904,432
Fair Value, Recurring | Corporate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	7,583	9,925
Fair Value, Recurring | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	6,402	9,183
Interest rate swap agreements	(6,402)	(9,183)
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Total assets	0	0
Total liabilities	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential Mortgage Loans Held For Sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Residential mortgage loans held for sale	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. treasuries and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed and asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	0	0
Interest rate swap agreements	0	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	1,420,297	1,338,096
Total assets	1,511,629	1,425,573
Total liabilities	(6,402)	(9,183)
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Residential Mortgage Loans Held For Sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Residential mortgage loans held for sale	84,930	78,294
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | U.S. treasuries and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	48,086	43,297
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	366,032	390,367
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-backed and asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	1,006,179	904,432
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	6,402	9,183
Interest rate swap agreements	(6,402)	(9,183)
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	7,583	9,925
Total assets	7,583	9,925
Total liabilities	0	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Residential Mortgage Loans Held For Sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Residential mortgage loans held for sale	0	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | U.S. treasuries and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | State and municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Mortgage-backed and asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	0	0
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Proceeds from sales of investment available-for-sale	7,583	9,925
Fair Value, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap agreements
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap agreements	0	0
Interest rate swap agreements	$ 0	$ 0

XML

FAIR VALUE (Change in the fair value of assets measured in the Condensed Consolidated Statements) (Detail) - Fair Value, Inputs, Level 3 - Investments available-for-sale: $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Investments available-for-sale:
Beginning balance	$ 9,925
Additions of Level 3 assets	0
Sales of Level 3 assets	(2,102)
Total unrealized loss included in other comprehensive income/ (loss)	(240)
Ending balance	$ 7,583

XML

FAIR VALUE - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Nonrecurring - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	$ 6,867	$ 15,356
Total Losses	(6,167)	(11,612)
Loans (1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	5,513	13,901
Total Losses	(5,780)	(11,326)
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	1,354	1,455
Total Losses	(387)	(286)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans (1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2) | Loans (1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Significant Other Observable Inputs (Level 2) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	0	0
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	6,867	15,356
Fair Value, Inputs, Level 3 | Loans (1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	5,513	13,901
Fair Value, Inputs, Level 3 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring	$ 1,354	$ 1,455

XML

FAIR VALUE - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Balance of loans individually evaluated for credit loss	$ 82.0	$ 97.7
Loans receivable, fair value	68.9	86.3
Allowance related to loans evaluated individually	$ 13.1	$ 11.4

XML

FAIR VALUE - Carrying Amounts and Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets:
Residential mortgage loans held for sale (at fair value)	$ 84,930	$ 78,294
Investments available-for-sale	1,427,880	1,348,021
Loans, net of allowance	10,316,505	10,235,142
Accrued interest receivable	44,559	46,431
Financial liabilities:
Other deposits	10,677,752	10,033,069
Securities sold under retail repurchase agreements and federal funds purchased	189,318	543,157
Advances from FHLB	100,000	379,075
Subordinated debt	227,044	227,088
Carrying Amount
Financial assets:
Cash and cash equivalents	228,621	297,003
Residential mortgage loans held for sale (at fair value)	84,930	78,294
Investments available-for-sale (at fair value)	1,427,880	1,348,021
Equity securities	44,847	65,760
Loans, net of allowance	10,316,505	10,235,142
Interest rate swap agreements	6,402	9,183
Accrued interest receivable	44,559	46,431
Bank owned life insurance	127,567	126,887
Financial liabilities:
Time deposits	1,675,166	1,657,662
Other deposits	9,002,586	8,375,407
Securities sold under retail repurchase agreements and federal funds purchased	189,318	543,157
Advances from FHLB	100,000	379,075
Subordinated debt	227,044	227,088
Interest rate swap agreements	6,402	9,183
Accrued interest payable	4,019	3,254
Estimated Fair Value
Financial assets:
Cash and cash equivalents	228,621	297,003
Residential mortgage loans held for sale (at fair value)	84,930	78,294
Investments available-for-sale (at fair value)	1,427,880	1,348,021
Equity securities	44,847	65,760
Loans, net of allowance	10,339,985	10,336,355
Interest rate swap agreements	6,402	9,183
Accrued interest receivable	44,559	46,431
Bank owned life insurance	127,567	126,887
Financial liabilities:
Time deposits	1,687,100	1,674,112
Other deposits	9,002,586	8,375,407
Securities sold under retail repurchase agreements and federal funds purchased	189,318	543,157
Advances from FHLB	100,327	390,593
Subordinated debt	217,942	227,512
Interest rate swap agreements	6,402	9,183
Accrued interest payable	4,019	3,254
Quoted Prices in Active Markets for Identical Assets (Level 1) | Estimated Fair Value
Financial assets:
Cash and cash equivalents	228,621	297,003
Residential mortgage loans held for sale (at fair value)	0	0
Investments available-for-sale (at fair value)	0	0
Equity securities	44,847	65,760
Loans, net of allowance	0	0
Interest rate swap agreements	0	0
Accrued interest receivable	44,559	46,431
Bank owned life insurance	0	0
Financial liabilities:
Time deposits	0	0
Other deposits	9,002,586	8,375,407
Securities sold under retail repurchase agreements and federal funds purchased	0	0
Advances from FHLB	0	0
Subordinated debt	0	0
Interest rate swap agreements	0	0
Accrued interest payable	4,019	3,254
Significant Other Observable Inputs (Level 2) | Estimated Fair Value
Financial assets:
Cash and cash equivalents	0	0
Residential mortgage loans held for sale (at fair value)	84,930	78,294
Investments available-for-sale (at fair value)	1,420,297	1,338,096
Equity securities	0	0
Loans, net of allowance	0	0
Interest rate swap agreements	6,402	9,183
Accrued interest receivable	0	0
Bank owned life insurance	127,567	126,887
Financial liabilities:
Time deposits	1,687,100	1,674,112
Other deposits	0	0
Securities sold under retail repurchase agreements and federal funds purchased	189,318	543,157
Advances from FHLB	100,327	390,593
Subordinated debt	0	0
Interest rate swap agreements	6,402	9,183
Accrued interest payable	0	0
Significant Unobservable Inputs (Level 3) | Estimated Fair Value
Financial assets:
Cash and cash equivalents	0	0
Residential mortgage loans held for sale (at fair value)	0	0
Investments available-for-sale		9,925
Investments available-for-sale (at fair value)	7,583
Equity securities	0	0
Loans, net of allowance	10,339,985	10,336,355
Interest rate swap agreements	0	0
Accrued interest receivable	0	0
Bank owned life insurance	0	0
Financial liabilities:
Time deposits	0	0
Other deposits	0	0
Securities sold under retail repurchase agreements and federal funds purchased	0	0
Advances from FHLB	0	0
Subordinated debt	217,942	227,512
Interest rate swap agreements	0	0
Accrued interest payable	$ 0	$ 0

XML

SEGMENT REPORTING - Narrative (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	3
Amortization of Intangible Assets	$ 1,697	$ 600
Community Banking
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	1,200	400
Insurance
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	0	0
Investment Management
Segment Reporting Information [Line Items]
Amortization of Intangible Assets	500	$ 200
Investment Management | West Financial and RPJ
Segment Reporting Information [Line Items]
Assets under management	$ 3,600,000

XML

SEGMENT REPORTING (Operating Segments and Reconciliation of Information to Condensed Consolidated Financial Statements) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Interest income	$ 114,261	$ 83,858
Interest expense	9,661	19,524
Provision/ (credit) for credit losses	(34,708)	24,469	$ 85,669
Non-interest income	28,866	18,168
Non-interest expense	68,173	47,746
Income before income tax expense	100,001	10,287
Income tax expense	24,537	300
Net income	75,464	9,987
Assets	12,873,366	8,929,602	$ 12,798,429
Inter-Segment Elimination
Segment Reporting Information [Line Items]
Interest income	(3)	(4)
Interest expense	(3)	(4)
Provision/ (credit) for credit losses	0	0
Non-interest income	(217)	(204)
Non-interest expense	(217)	(204)
Income before income tax expense	0	0
Income tax expense	0	0
Net income	0	0
Assets	(73,137)	(54,791)
Community Banking | Operating Segments
Segment Reporting Information [Line Items]
Interest income	114,261	83,857
Interest expense	9,664	19,528
Provision/ (credit) for credit losses	(34,708)	24,469
Non-interest income	21,725	13,977
Non-interest expense	63,695	44,655
Income before income tax expense	97,335	9,182
Income tax expense	23,838	1
Net income	73,497	9,181
Assets	12,878,311	8,917,849
Insurance | Operating Segments
Segment Reporting Information [Line Items]
Interest income	1	3
Interest expense	0	0
Provision/ (credit) for credit losses	0	0
Non-interest income	2,151	2,129
Non-interest expense	1,487	1,464
Income before income tax expense	665	668
Income tax expense	183	185
Net income	482	483
Assets	11,504	10,887
Investment Management | Operating Segments
Segment Reporting Information [Line Items]
Interest income	2	2
Interest expense	0	0
Provision/ (credit) for credit losses	0	0
Non-interest income	5,207	2,266
Non-interest expense	3,208	1,831
Income before income tax expense	2,001	437
Income tax expense	516	114
Net income	1,485	323
Assets	$ 56,688	$ 55,657

XML

Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member