10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For quarterly period ended March 31, 2018

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

For transition period from __________ to __________

Commission File Number: 001-15393

HEARTLAND FINANCIAL USA, INC.

(Exact name of Registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation or organization)

42-1405748

(I.R.S. employer identification number)

1398 Central Avenue, Dubuque, Iowa  52001

(Address of principal executive offices)(Zip Code)

(563) 589-2100

(Registrant's telephone number, including area code)

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

     Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes x No o

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

Large accelerated filer x		Accelerated Filer ¨
Non-accelerated filer ¨	(Do not check if a smaller reporting company)
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 by Rule 12b-2 of the Securities Exchange Act of 1934). Yes oNo x

Indicate the number of shares outstanding of each of the classes of Registrant's common stock as of the latest practicable date:  As of May 7, 2018, the Registrant had outstanding 31,068,676 shares of common stock, $1.00 par value per share.

HEARTLAND FINANCIAL USA, INC.

Form 10-Q Quarterly Report

Table of Contents

Part I
Item 1.	Financial Statements
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations
Item 3.	Quantitative and Qualitative Disclosures About Market Risk
Item 4.	Controls and Procedures
Part II
Item 1.	Legal Proceedings
Item 1A.	Risk Factors
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds
Item 3.	Defaults Upon Senior Securities
Item 4.	Mine Safety Disclosures
Item 5.	Other Information
Item 6.	Exhibits
	10.1 Form of Time-Based Restricted Stock Unit Award Agreement under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan for time-based awards vesting in the first, second and third years following the original grant award.
	10.2 Form of Performance-Based Restricted Stock Unit Award Agreement One-Year Performance Period under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan.
	10.3 Form of Performance-Based Restricted Stock Unit Award Agreement Three-Year Performance Period under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan.
	31.1 Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act.
	31.2 Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act.
	32.1 Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
	32.2 Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
	101 Financial statements formatted in Extensible Business Reporting Language: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Changes in Equity, and (vi) the Notes to Consolidated Financial Statements.

PART I

ITEM 1. FINANCIAL STATEMENTS

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED BALANCE SHEETS (Dollars in thousands, except per share data)
	March 31, 2018 (Unaudited)			December 31, 2017
ASSETS
Cash and due from banks	$	143,071		$	168,723
Interest bearing deposits with the Federal Reserve Bank and other banks and other short-term investments	123,275			27,280
Cash and cash equivalents	266,346			196,003
Time deposits in other financial institutions	6,297			9,820
Securities:
Available for sale, at fair value (cost of $2,080,514 at March 31, 2018, and $2,248,181 at December 31, 2017)	2,027,665			2,216,753
Held to maturity, at cost (fair value of $258,638 at March 31, 2018, and $265,494 at December 31, 2017)	249,766			253,550
Other investments, at cost	22,982			22,563
Loans held for sale	24,376			44,560
Loans receivable:
Held to maturity	6,746,015			6,391,464
Allowance for loan and lease losses	(58,656		)	(55,686		)
Loans receivable, net	6,687,359			6,335,778
Premises, furniture and equipment, net	171,385			172,324
Premises, furniture and equipment held for sale	1,477			1,977
Other real estate, net	11,801			10,777
Goodwill	270,305			236,615
Core deposit intangibles and customer relationship intangibles, net	41,063			35,203
Servicing rights, net	25,471			25,857
Cash surrender value on life insurance	143,444			142,818
Other assets	106,126			106,141
TOTAL ASSETS	$	10,055,863		$	9,810,739
LIABILITIES AND EQUITY
LIABILITIES:
Deposits:
Demand	$	3,094,457		$	2,983,128
Savings	4,536,106			4,240,328
Time	910,977			923,453
Total deposits	8,541,540			8,146,909
Short-term borrowings	131,240			324,691
Other borrowings	276,118			285,011
Accrued expenses and other liabilities	55,460			62,671
TOTAL LIABILITIES	9,004,358			8,819,282
STOCKHOLDERS' EQUITY:
Preferred stock (par value $1 per share; authorized 17,604 shares; none issued or outstanding at both March 31, 2018, and December 31, 2017)	—			—
Series A Junior Participating preferred stock (par value $1 per share; authorized 16,000 shares; none issued or outstanding at both March 31, 2018, and December 31, 2017)	—			—
Series C Senior Non-Cumulative Perpetual Preferred Stock (par value $1 per share; 81,698 shares authorized at both March 31, 2018, and December 31, 2017, none issued or outstanding at both March 31, 2018, and December 31, 2017)	—			—
Series D Senior Non-Cumulative Perpetual Convertible Preferred Stock (par value $1 per share; 3,000 shares authorized at both March 31, 2018, and December 31, 2017; 745 shares issued and outstanding at both March 31, 2018, and December 31, 2017)	938			938
Common stock (par value $1 per share; 40,000,000 shares authorized at both March 31, 2018, and December 31, 2017; issued 31,068,239 shares at March 31, 2018, and 29,953,356 shares at December 31, 2017)	31,068			29,953
Capital surplus	557,990			503,709
Retained earnings	500,959			481,331
Accumulated other comprehensive loss	(39,450		)	(24,474		)
Treasury stock at cost (0 shares at both March 31, 2018, and December 31, 2017)	—			—
TOTAL STOCKHOLDERS' EQUITY	1,051,505			991,457
TOTAL LIABILITIES AND EQUITY	$	10,055,863		$	9,810,739
See accompanying notes to consolidated financial statements.

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (Dollars in thousands, except per share data)
	Three Months Ended March 31,
	2018			2017
INTEREST INCOME:
Interest and fees on loans	$	85,651		$	66,898
Interest on securities:
Taxable	11,577			8,253
Nontaxable	3,579			5,191
Interest on federal funds sold	—			—
Interest on interest bearing deposits in other financial institutions	407			209
TOTAL INTEREST INCOME	101,214			80,551
INTEREST EXPENSE:
Interest on deposits	5,766			3,730
Interest on short-term borrowings	268			137
Interest on other borrowings (includes $197 and $397 of interest expense related to derivatives reclassified from accumulated other comprehensive income for the three months ended March 31, 2018 and 2017, respectively)	3,596			3,656
TOTAL INTEREST EXPENSE	9,630			7,523
NET INTEREST INCOME	91,584			73,028
Provision for loan losses	4,263			3,641
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	87,321			69,387
NONINTEREST INCOME:
Service charges and fees	10,079			9,457
Loan servicing income	1,754			1,724
Trust fees	4,680			3,631
Brokerage and insurance commissions	907			1,036
Securities gains, net (includes $1,441 and $2,482 of net security gains reclassified from accumulated other comprehensive income for the three months ended March 31, 2018 and 2017, respectively)	1,441			2,482
Unrealized loss on equity securities, net	(28		)	—
Net gains on sale of loans held for sale	4,051			6,147
Valuation allowance on commercial servicing rights	(2		)	5
Income on bank owned life insurance	614			617
Other noninterest income	1,220			794
TOTAL NONINTEREST INCOME	24,716			25,893
NONINTEREST EXPENSES:
Salaries and employee benefits	48,710			41,767
Occupancy	6,043			5,073
Furniture and equipment	2,749			2,501
Professional fees	8,459			8,309
FDIC insurance assessments	989			807
Advertising	1,940			2,424
Core deposit intangibles and customer relationship intangibles amortization	1,863			1,171
Other real estate and loan collection expenses	732			828
(Gain)/loss on sales/valuations of assets, net	(197		)	412
Restructuring expenses	2,564			—
Other noninterest expenses	9,794			8,448
TOTAL NONINTEREST EXPENSES	83,646			71,740
INCOME BEFORE INCOME TAXES	28,391			23,540
Income taxes (includes $261 and $778 of income tax expense reclassified from accumulated other comprehensive income for the three months ended March 31, 2018 and 2017, respectively)	5,123			5,530
NET INCOME	23,268			18,010
Preferred dividends	(13		)	(19		)
Interest expense on convertible preferred debt	—			5
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$	23,255		$	17,996
EARNINGS PER COMMON SHARE - BASIC	$	0.76		$	0.68
EARNINGS PER COMMON SHARE - DILUTED	$	0.76		$	0.68
CASH DIVIDENDS DECLARED PER COMMON SHARE	$	0.13		$	0.11
See accompanying notes to consolidated financial statements.

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Dollars in thousands)
	Three Months Ended March 31,
	2018			2017
NET INCOME	$	23,268		$	18,010
OTHER COMPREHENSIVE INCOME
Securities:
Net change in unrealized gain (loss) on securities	(19,834		)	5,379
Reclassification adjustment for net gains realized in net income	(1,441		)	(2,482		)
Income taxes	5,391			(1,111		)
Other comprehensive income (loss) on securities	(15,884		)	1,786
Derivatives used in cash flow hedging relationships:
Net change in unrealized gain on derivatives	1,699			136
Reclassification adjustment for net losses on derivatives realized in net income	197			397
Income taxes	(708		)	(215		)
Other comprehensive income on cash flow hedges	1,188			318
Other comprehensive income (loss)	(14,696		)	2,104
TOTAL COMPREHENSIVE INCOME	$	8,572		$	20,114
See accompanying notes to consolidated financial statements.

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Dollars in thousands)
	Three Months Ended March 31,
	2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	23,268		$	18,010
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,802			7,023
Provision for loan losses	4,263			3,641
Net amortization of premium on securities	5,823			7,226
Securities gains, net	(1,441		)	(2,482		)
Unrealized loss on equity securities, net	28			—
Stock based compensation	1,858			1,782
Loans originated for sale	(112,433		)	(164,324		)
Proceeds on sales of loans held for sale	135,506			180,404
Net gains on sale of loans held for sale	(2,889		)	(3,828		)
Decrease in accrued interest receivable	3,239			93
Decrease in prepaid expenses	194			84
Increase in accrued interest payable	1,029			825
Capitalization of servicing rights	(1,183		)	(2,226		)
Valuation allowance on commercial servicing rights	2			(5		)
(Gain)/loss on sales/valuations of assets, net	(197		)	412
Net excess tax benefit from stock based compensation	611			888
Other, net	(5,441		)	(13,767		)
NET CASH PROVIDED BY OPERATING ACTIVITIES	59,039			33,756
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of securities available for sale	392,246			221,637
Proceeds from the redemption of time deposits in other financial institutions	8,767			5,867
Proceeds from the maturity of and principal paydowns on securities available for sale	49,603			47,515
Proceeds from the maturity of and principal paydowns on securities held to maturity	3,570			2,823
Proceeds from the maturity of and principal paydowns on time deposits in other financial institutions	4,368			3,185
Proceeds from the maturity of and principal paydowns on other investments	677			1,521
Purchase of securities available for sale	(244,289		)	(312,769		)
Purchase of other investments	(644		)	(968		)
Net (increase) decrease in loans	(32,314		)	80,916
Capital expenditures	(2,356		)	(3,588		)
Net cash and cash equivalents received in acquisitions	5,543			33,698
Proceeds from the sale of equipment	615			3
Proceeds on sale of OREO and other repossessed assets	668			585
NET CASH PROVIDED BY INVESTING ACTIVITIES	$	186,454		$	80,425

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED STATEMENTS OF CASH FLOWS, CONTINUED (Unaudited) (Dollars in thousands)
	Three Months Ended March 31,
	2018			2017
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits	$	5,834		$	22,799
Net increase in savings deposits	100,608			88,767
Net decrease in time deposit accounts	(69,143		)	(50,612		)
Proceeds on short-term revolving credit line	15,000			—
Net decrease in short-term borrowings	(168,451		)	(131,068		)
Proceeds from short term FHLB advances	220,000			60,939
Repayments of short term FHLB advances	(260,000		)	(81,305		)
Repayments of other borrowings	(14,995		)	(6,432		)
Purchase of treasury stock	(97		)	(160		)
Proceeds from issuance of common stock	14			218
Dividends paid	(3,920		)	(2,900		)
NET CASH USED BY FINANCING ACTIVITIES	(175,150		)	(99,754		)
Net increase in cash and cash equivalents	70,343			14,427
Cash and cash equivalents at beginning of year	196,003			158,724
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	266,346		$	173,151
Supplemental disclosures:
Cash paid for income/franchise taxes	$	2		$	5
Cash paid for interest	$	8,601		$	6,698
Loans transferred to OREO	$	939		$	2,680
Purchases of securities available for sale, accrued, not settled	$	—		$	3,654
Conversion of convertible debt to common stock	$	—		$	167
Conversion of Series D preferred stock to common stock	$	—		$	419
Stock consideration granted for acquisitions	$	53,621		$	22,589
See accompanying notes to consolidated financial statements.

HEARTLAND FINANCIAL USA, INC. CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) (Dollars in thousands, except per share data)
	Heartland Financial USA, Inc. Stockholders' Equity
	Preferred  Stock			Common  Stock		Capital  Surplus		Retained  Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Total  Equity
Balance at January 1, 2017	$	1,357		$	26,120	$	328,376	$	416,109		$	(31,046	)	$	—		$	740,916
Comprehensive income								18,010			2,104						20,114
Cash dividends declared:
Series D Preferred, $17.50 per share								(19		)							(19		)
Common, $0.11 per share								(2,881		)							(2,881		)
Conversion of Series D Preferred Stock	(419		)														(419		)
Purchase of 3,338 shares of common stock														(160		)	(160		)
Issuance of 557,530 shares of common stock				554		21,265								160			21,979
Stock based compensation						1,782											1,782
Balance at March 31, 2017	$	938		$	26,674	$	351,423	$	431,219		$	(28,942	)	$	—		$	781,312
Balance at January 1, 2018	$	938		$	29,953	$	503,709	$	481,331		$	(24,474	)	$	—		$	991,457
Comprehensive income								23,268			(14,696		)				8,572
Reclassification of unrealized net gain on equity securities								280			(280		)				—
Cash dividends declared:																	—
Series D Preferred, $17.50 per share								(13		)							(13		)
Common, $0.13 per share								(3,907		)							(3,907		)
Purchase of 1,761 shares of common stock														(97		)	(97		)
Issuance of 1,116,644 shares of common stock				1,115		52,423								97			53,635
Stock based compensation						1,858											1,858
Balance at March 31, 2018	$	938		$	31,068	$	557,990	$	500,959		$	(39,450	)	$	—		$	1,051,505
See accompanying notes to consolidated financial statements.

HEARTLAND FINANCIAL USA, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1: BASIS OF PRESENTATION

The interim unaudited consolidated financial statements contained herein should be read in conjunction with the audited consolidated financial statements and accompanying notes to the consolidated financial statements for the fiscal year ended December 31, 2017, included in the Form 10-K of Heartland Financial USA, Inc. ("Heartland") filed with the Securities and Exchange Commission ("SEC") on February 28, 2018. Footnote disclosures to the interim unaudited consolidated financial statements which would substantially duplicate the disclosure contained in the footnotes to the audited consolidated financial statements have been omitted.

The financial information of Heartland included herein has been prepared in accordance with U.S. generally accepted accounting principles for interim financial reporting and has been prepared pursuant to the rules and regulations for reporting on Form 10-Q and Rule 10-01 of Regulation S-X. Such information reflects all adjustments (consisting of normal recurring adjustments), that are, in the opinion of management, necessary for a fair presentation of the financial position and results of operations for the periods presented. The results of the interim period ended March 31, 2018, are not necessarily indicative of the results expected for the year ending December 31, 2018.

In the Annual Report on Form 10-K for the year ended December 31, 2017, Heartland reported the results of operations through two business segments: Community and Other Banking and Mortgage Banking. Effective January 1, 2018, the recently restructured mortgage banking segment is no longer a reportable segment due to the significant reduction in infrastructure and the reporting structure of the mortgage sales staff, who currently report directly to the bank president in each market. Accordingly, Heartland is no longer reporting results of operations by segment.

Earnings Per Share

Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued. Amounts used in the determination of basic and diluted earnings per share for the three-month periods ended March 31, 2018, and 2017, are shown in the table below:

	Three Months Ended March 31,
(Dollars and number of shares in thousands, except per share data)	2018			2017
Net income	$	23,268		$	18,010
Preferred dividends	(13		)	(19		)
Interest expense on convertible preferred debt	—			5
Net income available to common stockholders	$	23,255		$	17,996
Weighted average common shares outstanding for basic earnings per share	30,442			26,335
Assumed incremental common shares issued upon non-vested restricted stock units	203			293
Weighted average common shares for diluted earnings per share	30,645			26,628
Earnings per common share — basic	$	0.76		$	0.68
Earnings per common share — diluted	$	0.76		$	0.68
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	—			—

Stock-Based Compensation

Heartland may grant, through its Nominating and Compensation Committee (the "Compensation Committee"), non-qualified and incentive stock options, stock appreciation rights, stock awards, restricted stock, restricted stock units and cash incentive awards, under its 2012 Long-Term Incentive Plan (the "Plan"). The Plan was originally approved by stockholders in May 2012 and was amended effective March 8, 2016, to increase the number of shares of common stock authorized for issuance and make certain other changes to the Plan. As of March 31, 2018, 459,893 shares of common stock were available for issuance under future awards that may be granted under the Plan to employees and directors of, and service providers to, Heartland or its subsidiaries.

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 718, "Compensation-Stock Compensation" requires the measurement of the cost of employee services received in exchange for an award of equity instruments

based upon the fair value of the award on the grant date. The cost of the award is based upon its fair value estimated on the date of grant and recognized in the consolidated statements of income over the vesting period of the award. The fair market value of restricted stock and restricted stock units is based on the fair value of the underlying shares of common stock on the date of grant. The fair value of stock options is estimated on the date of grant using the Black-Scholes model. Forfeitures are accounted for as they occur.

The amount of tax benefit related to the exercise, vesting and forfeiture of equity-based awards reflected as a tax benefit in Heartland's income tax expense was $611,000 and $888,000 during the three months ended March 31, 2018 and 2017, respectively.

Restricted Stock Units

The Plan permits the Compensation Committee to grant restricted stock units ("RSUs"). In the first quarter of 2018, the Compensation Committee granted time-based RSUs with respect to 52,153 shares of common stock, and in the first quarter of 2017, the Compensation Committee granted time-based RSUs with respect to 55,665 shares of common stock to selected officers and employees. The time-based RSUs represent the right, without payment, to receive shares of Heartland common stock on a specified date in the future. The time-based RSUs granted in 2018 vest over three years in equal installments on March 6 of each of the three years following the year of the grant, while the 2017 time-based RSUs vest in equal installments on January 19 of each of the three years following the year of the grant. The time-based RSUs may also vest upon death or disability, upon a change in control or upon a "qualified retirement" (as defined in the RSU agreement). The retiree is required to sign a non-solicitation agreement as a condition to vesting.

In addition to the time-based RSUs referenced in the preceding paragraph, the Compensation Committee granted one-year performance-based RSUs with respect to 18,988 shares of common stock in the first quarter of 2018, and 27,570 shares of common stock in the first quarter of 2017. These performance-based RSUs are earned based on satisfaction of performance targets for the fiscal years ended December 31, 2018, and December 31, 2017, respectively, and then fully vest on a specified date in the third calendar year following the year of the initial grant.

The Compensation Committee also granted three-year performance-based RSUs with respect to 16,108 shares and 9,032 shares of common stock in the first quarter of 2018 and 2017, respectively. These performance-based RSUs will be earned based on satisfaction of performance targets for the three-year performance period ended December 31, 2020, and December 31, 2019, respectively. These performance-based RSUs or a portion thereof may vest in 2021 and 2020, respectively, after measurement of performance in relation to the performance targets.

The one-year and three-year performance-based RSUs vest to the extent that they are earned upon death or disability or upon a "qualified retirement." Upon a change in control, performance-based RSUs shall become vested at 100% of target if the RSU obligations are not assumed by the successor company. If the successor company does assume the RSU obligations, the 2017 and 2018 performance-based RSUs will vest at 100% of target upon a "Termination of Service" within the period beginning six months prior to a change in control and ending twenty-four months after a change in control.

All of Heartland's RSUs will be settled in common stock upon vesting and are not entitled to dividends until vested.

The Compensation Committee may grant RSUs under the Plan to directors as part of their compensation, to new management level employees at commencement of employment, and to other employees and service providers as incentives. During the three months ended March 31, 2018, and March 31, 2017, no time-based RSUs were granted to directors and new employees.

A summary of the RSUs outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Grant Date Fair Value		Shares		Weighted-Average Grant Date Fair Value
Outstanding at January 1	301,578		$	34.74	346,817		$	27.61
Granted	87,249		55.25		92,267		47.50
Vested	(107,553	)	30.79		(103,897	)	24.74
Forfeited	(19,113	)	43.62		(7,765	)	31.03
Outstanding at March 31	262,161		$	42.60	327,422		$	34.04

Total compensation costs recorded for RSUs were $1.9 million and $1.7 million for the three-month periods ended March 31, 2018 and 2017. As of March 31, 2018, there were $6.1 million of total unrecognized compensation costs related to the Plan for RSUs that are expected to be recognized through 2021.

Options

Although the Plan provides authority to the Compensation Committee to grant stock options, no options were granted during the first three months of 2018 and 2017. Prior to 2009, options were typically granted annually with an expiration date ten years after the date of grant. Vesting was generally over a five-year service period with equal portions of a grant becoming exercisable at three years, four years, and five years after the date of grant. A summary of the stock options outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Exercise Price		Shares		Weighted-Average Exercise Price
Outstanding at January 1	6,500		$	18.60	26,400		$	18.60
Granted	—		—		—		—
Exercised	(6,500	)	18.60		(5,500	)	18.60
Forfeited	—		—		—		—
Outstanding at March 31	—		$	—	20,900		$	18.60
Options exercisable at March 31	—		$	—	20,900		$	18.60

The intrinsic value for the total of all options exercised during the three months ended March 31, 2018, was $231,000. Cash received from options exercised was $121,000 for the three months ended March 31, 2018, and $102,000 for the three months ended March 31, 2017.

No compensation costs were recorded for options during the three month periods ended March 31, 2018 and 2017. There are no unrecorded compensation costs related to options at March 31, 2018. No stock options vested during the three-month periods ended March 31, 2018 and 2017.

Subsequent Events - Heartland has evaluated subsequent events that may require recognition or disclosure through the filing date of this Quarterly Report on Form 10-Q with the SEC.

Effect of New Financial Accounting Standards

In May 2014, the FASB issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers." The amendment clarifies the principles for recognizing revenue and develops a common revenue standard. The amendment outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that "an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." In applying the revenue model to contracts within its scope, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract, and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The new guidance does not apply to certain contracts within the scope of other ASC Topics, such as lease contracts, insurance contracts, financing arrangements, financial instruments, guarantees other than product or service warranties and nonmonetary exchanges between entities in the same line of business to facilitate sales to customers. Heartland evaluates noninterest income contracts affected by the new guidance by analyzing contracts and current accounting practices to determine if a change is appropriate. The amendment is largely consistent with existing guidance and current practices; however Heartland had to change the recognition of certain recurring revenue streams within trust and investment management fees. Heartland adopted the accounting standard effective January 1, 2018, as required, using a modified retrospective approach. However, the adoption of these amendments did not have a significant effect on Heartland's results of operations, financial position and liquidity other than expanded disclosure requirements. See Note 9, "Revenue," for further details regarding Heartland's revenue.

In January 2016, the FASB issued guidance ASU 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities." The amendments in ASU 2016-01 to Subtopic 825-10, Financial Instruments, contain the following elements: (1) require equity investments to be measured at fair value with changes in fair value recognized in net income; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to

identify impairment; (3) eliminates the requirement for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (5) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or accompanying notes to the financial statements; and (7) clarifies that the entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity's other deferred tax assets. The amendments are effective for fiscal years beginning after December 15, 2017, and for interim periods within those fiscal years. Except for the early application of the amendment noted in item (5) above, early adoption of the amendments in this update is not permitted. Entities are required to and Heartland applied the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which are to be applied prospectively to equity investments that exist as of the adoption date. Heartland adopted the accounting standard on January 1, 2018, as required, and the adoption of these amendments did not have a material impact on its results of operations, financial position and liquidity. Heartland reclassified $280,000 from accumulated other comprehensive income to retained earnings on January 1, 2018, related to the fair value of its equity investments.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." Topic 842 requires a lessee to recognize leases on-balance sheet and disclose key information about leasing arrangements. The new standard establishes a right-of-use model (ROU) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as financing or operating, with classification affecting the pattern and classification of expense recognition in the income statement. The amendment is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and will be applied on a modified retrospective basis. Heartland leases certain properties and equipment under operating leases that will result in recognition of lease assets and lease liabilities on the consolidated balance sheets under the ASU; however the majority of Heartland's properties and equipment are owned, not leased. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. Early adoption is permitted. In January 2018, the FASB issued an amendment to provide entities with the optional practical expedient to not evaluate existing or expired land easements that were previously not accounted for as leases under Topic 840. Heartland intends to adopt the accounting standard in 2019, as required, and does not expect the adoption of this standard to have a significant impact on its results of operations, financial position and liquidity. Heartland has signed an agreement with a cloud-based lease software provider, and implementation of the software started in the first quarter of 2018.

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326)." The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The amendments in this ASU indicate that an entity should not use the length of time a security has been in an unrealized loss position to avoid recording a credit loss. In addition, in determining whether a credit loss exists, the amendments in this ASU also remove the requirements to consider the historical and implied volatility of the fair value of a security and recoveries or declines in fair value after the balance sheet date. The amendment is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. An entity may adopt the amendments earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Heartland intends to adopt the accounting standard in 2020, as required, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity. Upon adoption of ASU 2016-13, a cumulative-effect adjustment to retained earnings will be recorded as of the beginning of the first reporting period in which the guidance is effective. Heartland has formed an internal committee to assess and implement the standard, and Heartland has entered into an agreement with a third party vendor to evaluate potential methodologies and data.

In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments." The amendments in this update address eight specific cash flow issues with the objective of reducing the existing diversity in practice. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The amendments in this update should be applied using a retrospective transition method to each period presented. Heartland adopted this ASU on January

1, 2018, as required, and the adoption of these amendments did not have a material impact on Heartland's results of operations, financial position and liquidity.

In October 2016, the FASB issued ASU 2016-16, "Income Taxes (Topic 740) - Intra-Entity Transfer of Assets Other Than Inventory." The amendment requires an entity to recognize income tax consequences on an intra-entity transfer of an asset other than inventory at the time the transaction occurs. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The amendments must be applied and Heartland applied these amendments using a modified retrospective basis. Heartland adopted this ASU on January 1, 2018, as required, and the adoption of this amendment did not have a material impact on Heartland's results of operations, financial position and liquidity.

In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business," which narrows the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. ASU 2017-01 is effective for public business entities in annual periods beginning after December 15, 2017, including interim periods therein. Heartland adopted ASU 2017-01 on January 1, 2018, as required, and the adoption did not have a material impact on Heartland's results of operations, financial position, and liquidity.

In January 2017, the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350)." This amendment is to simplify the subsequent measurement of goodwill by eliminating step two from the goodwill impairment test. Instead, an entity will perform only step one of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing the impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized cannot exceed the total amount of goodwill allocated to that reporting unit. An entity will still have the option to perform a qualitative assessment for a reporting unit to determine if the quantitative step one impairment test is necessary. This amendment is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied prospectively. Early adoption is permitted, including in an interim period for impairment tests performed after January 1, 2017. Heartland intends to adopt this ASU in the third quarter of 2020, consistent with the annual impairment test as of September 30, 2020, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity.

In March 2017, the FASB issued ASU 2017-08, "Receivables - Nonrefundable Fee and Other Costs (Subtopic 310-20)." These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Discounts continue to be amortized to maturity. These amendments are effective for public business entities for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If any entity early adopts the amendments in an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes the interim period. The amendments must be applied and Heartland intends to apply these amendments on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Heartland intends to adopt this ASU in 2019, as required, and is currently evaluating the potential impact on its results of operations, financial position and liquidity.

In May 2017, the FASB issued ASU 2017-09, "Compensation - Stock Compensation (Topic 718)." The amendments provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the modified award is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments are effective for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim periods for public business entities for reporting periods for which financial statements have not yet been issued. The amendments should be applied and Heartland applied these amendments prospectively to an award modified on or after the adoption date. Heartland adopted this ASU on January 1, 2018, as required, the adoption did not have a material impact to its results of operations, financial position and liquidity because Heartland has not typically modified share-based payment awards after the original award has been granted.

In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging:Targeted Improvements to Accounting for Hedging Activities." The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the

economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2017-12 requires a modified retrospective transition method in which Heartland will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the consolidated balance sheet as of the date of adoption. Heartland intends to adopt this ASU in 2019, as required, and does not believe there will be a material impact to its results of operations, financial position and liquidity.

In February 2018, the FASB issued ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220)." This ASU allows for the option to reclassify from accumulated other comprehensive income ("AOCI") to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate in the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017. The legislation included a reduction to the corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the historical corporate income tax rate and the newly enacted 21 percent corporate income tax rate. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted for public businesses for reporting periods for which financial statements have not yet been issued. Heartland adopted the guidance as of December 31, 2017. The adoption of this ASU was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $4.5 million increase to retained earnings and a corresponding decrease to AOCI on December 31, 2017.

NOTE 2: ACQUISITIONS

First Bank Lubbock Bancshares, Inc.

On December 12, 2017, Heartland entered into a definitive merger agreement with First Bank Lubbock Bancshares, Inc., parent company of FirstBank & Trust Company, headquartered in Lubbock, Texas. Under the terms of the definitive merger agreement, Heartland will acquire First Bank Lubbock Bancshares, Inc. in a transaction valued at approximately $185.6 million as of the announcement date, subject to certain adjustments. Shareholders of First Bank Lubbock Bancshares, Inc. will receive a combination of Heartland common stock and cash. As of March 31, 2018, FirstBank & Trust Company had total assets of $971.5 million, including $704.9 million of gross loans held to maturity, and deposits of $869.3 million. Upon closing of the transaction, FirstBank & Trust Company will become a wholly-owned subsidiary of Heartland and will continue to operate under its current name and management team as Heartland's eleventh state-chartered bank. Heartland has received approval by the bank regulatory authorities related to this acquisition. The transaction is expected to close in the second quarter of 2018.

Signature Bancshares, Inc.

On February 23, 2018, Heartland completed the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, headquartered in Minnetonka, Minnesota. Under the terms of the definitive merger agreement, Heartland acquired Signature Bancshares, Inc. in a transaction valued at approximately $61.4 million, of which $7.8 million was cash, and the remainder was settled by delivery of 1,000,843 shares of Heartland common stock. Simultaneous with the close, Signature Bank merged into Heartland's wholly-owned Minnesota Bank & Trust subsidiary, and the combined entity operates under the Minnesota Bank & Trust brand name. The transaction included, at fair value, total assets of $427.1 million, including $324.5 million of gross loans held to maturity, and deposits of $357.3 million. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Signature Bancshares, Inc.

Citywide Banks of Colorado, Inc.

On July 7, 2017, Heartland acquired Citywide Banks of Colorado, Inc., parent company of Citywide Banks, headquartered in Aurora, Colorado. The transaction consideration was approximately $211.2 million, of which $58.6 million was cash, and the remainder was settled by delivery of 3,216,161 shares of Heartland common stock. Simultaneous with the close, Citywide Banks merged into Heartland's Centennial Bank and Trust subsidiary, and the combined entity operates as Citywide Banks. The transaction included, at fair value, total assets of $1.49 billion, including $985.4 million of net loans outstanding, and $1.21 billion of deposits on the acquisition date. Included in this transaction was one bank building with a fair value of $1.4 million that Heartland intends to sell and is classified as premises, furniture and equipment held for sale on the consolidated balance sheets. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Citywide Banks of Colorado, Inc.

Founders Bancorp

On February 28, 2017, Heartland acquired Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California. The purchase price was approximately $31.0 million, which was paid by delivery of 455,877 shares of Heartland common stock and cash of $8.4 million. The transaction included, at fair value, total assets of $213.9 million, loans of $96.4 million, and deposits of $181.5 million on the acquisition date. The transaction also included one bank building with a fair value of $576,000 that Heartland sold during the second quarter of 2017. Simultaneous with the closing of the transaction, Founders

Community Bank merged into Heartland's Premier Valley Bank subsidiary. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Founders Bancorp.

NOTE 3: SECURITIES

The amortized cost, gross unrealized gains and losses, and estimated fair values of securities available for sale as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
U.S. government corporations and agencies	$	11,254	$	3	$	(69	)	$	11,188
Mortgage and asset-backed securities	1,691,092		3,968		(47,456		)	1,647,604
Obligations of states and political subdivisions	361,475		1,132		(10,427		)	352,180
Total debt securities	2,063,821		5,103		(57,952		)	2,010,972
Equity securities	16,693		—		—			16,693
Total	$	2,080,514	$	5,103	$	(57,952	)	$	2,027,665
December 31, 2017
U.S. government corporations and agencies	$	5,358	$	8	$	(38	)	$	5,328
Mortgage and asset-backed securities	1,785,467		5,856		(37,587		)	1,753,736
Obligations of states and political subdivisions	441,060		4,669		(4,714		)	441,015
Total debt securities	2,231,885		10,533		(42,339		)	2,200,079
Equity securities	16,296		378		—			16,674
Total	$	2,248,181	$	10,911	$	(42,339	)	$	2,216,753

The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
Obligations of states and political subdivisions	$	249,766	$	9,699	$	(827	)	$	258,638
Total	$	249,766	$	9,699	$	(827	)	$	258,638
December 31, 2017
Obligations of states and political subdivisions	$	253,550	$	12,460	$	(516	)	$	265,494
Total	$	253,550	$	12,460	$	(516	)	$	265,494

At March 31, 2018, approximately 77% of Heartland's mortgage and asset-backed securities were issued by government-sponsored enterprises.

The amortized cost and estimated fair value of debt securities available for sale at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	5,397	$	5,392
Due in 1 to 5 years	56,369		56,209
Due in 5 to 10 years	116,517		112,484
Due after 10 years	194,446		189,283
Total debt securities	372,729		363,368
Mortgage and asset-backed securities	1,691,092		1,647,604
Equity securities	16,693		16,693
Total investment securities	$	2,080,514	$	2,027,665

The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	2,486	$	2,523
Due in 1 to 5 years	27,627		28,231
Due in 5 to 10 years	104,170		106,538
Due after 10 years	115,483		121,346
Total investment securities	$	249,766	$	258,638

As of March 31, 2018, and December 31, 2017, securities with a fair value of $594.3 million and $670.3 million, respectively, were pledged to secure public and trust deposits, short-term borrowings and for other purposes as required or permitted by law.

Gross gains and losses realized related to the sales of securities available for sale for the three-month periods ended March 31, 2018 and 2017, are summarized as follows, in thousands:

	Three Months Ended March 31,
	2018		2017
Proceeds from sales	$	392,246	$	221,637
Gross security gains	3,013		3,830
Gross security losses	1,572		1,339

The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in Heartland's securities portfolio as of March 31, 2018, and December 31, 2017. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 months or more. The reference point for determining how long an investment was in an unrealized loss position wasMarch 31, 2017, andDecember 31, 2016, respectively. Securities for which Heartland has taken credit-related other-than-temporary impairment ("OTTI") write-downs are categorized as being "less than 12 months" or "12 months or longer" in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down.

Securities available for sale	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
U.S. government corporations and agencies	$	10,685	$	(69	)	$	—	$	—		$	10,685	$	(69	)
Mortgage and asset-backed securities	923,293		(18,459		)	379,672		(28,997		)	1,302,965		(47,456		)
Obligations of states and political subdivisions	177,100		(3,456		)	131,574		(6,971		)	308,674		(10,427		)
Total debt securities	1,111,078		(21,984		)	511,246		(35,968		)	1,622,324		(57,952		)
Total temporarily impaired securities	$	1,111,078	$	(21,984	)	$	511,246	$	(35,968	)	$	1,622,324	$	(57,952	)
December 31, 2017
U.S. government corporations and agencies	$	4,819	$	(38	)	$	—	$	—		$	4,819	$	(38	)
Mortgage and asset-backed securities	851,070		(11,533		)	399,978		(26,054		)	1,251,048		(37,587		)
Obligations of states and political subdivisions	93,040		(667		)	159,180		(4,047		)	252,220		(4,714		)
Total debt securities	948,929		(12,238		)	559,158		(30,101		)	1,508,087		(42,339		)
Total temporarily impaired securities	$	948,929	$	(12,238	)	$	559,158	$	(30,101	)	$	1,508,087	$	(42,339	)

Securities held to maturity	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
Obligations of states and political subdivisions	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
Total temporarily impaired securities	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
December 31, 2017
Obligations of states and political subdivisions	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)
Total temporarily impaired securities	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)

Heartland reviews the investment securities portfolio on a quarterly basis to monitor its exposure to OTTI. A determination as to whether a security's decline in fair value is other-than-temporary takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors Heartland may consider in the OTTI analysis include the length of time the security has been in an unrealized loss position, changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, Heartland may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain debt securities in unrealized loss positions, Heartland prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.

The remaining unrealized losses on Heartland's mortgage and asset-backed securities are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. The losses are not related to concerns regarding the underlying credit of the issuers or the underlying collateral. It is expected that the securities will not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates or widening market spreads and not credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.

The remaining unrealized losses on Heartland's obligations of states and political subdivisions are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. Management monitors the published credit ratings of these securities and the stability of the underlying municipalities. Because the decline in fair value is attributable to changes in interest rates or widening market spreads due to insurance company downgrades and not underlying credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does

not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.

There were no gross realized gains or losses on the sale of available for sale or held to maturity securities with OTTI write-downs for the three-month periods ended March 31, 2018, and March 31, 2017, respectively.

Included in other securities at March 31, 2018, and December 31, 2017, were shares of stock in the Federal Home Loan Banks (the "FHLBs") of Des Moines, Chicago, Dallas, San Francisco and Topeka at an amortized cost of $14.3 million and $14.0 million, respectively.

The Heartland banks are required by federal law to maintain FHLB stock as members of the various FHLBs. These equity securities are "restricted" in that they can only be sold back to the respective institutions from which they were acquired or another member institution at par. Therefore, the FHLB stock is less liquid than other marketable equity securities, and the fair value approximates amortized cost. Heartland considers its FHLB stock as a long-term investment that provides access to competitive products and liquidity. Heartland evaluates impairment in these investments based on the ultimate recoverability of the par value and, at March 31, 2018, did not consider the investments to be other than temporarily impaired.

NOTE 4: LOANS

Loans as of March 31, 2018, and December 31, 2017, were as follows, in thousands:

	March 31, 2018			December 31, 2017
Loans receivable held to maturity:
Commercial	$	1,806,683		$	1,646,606
Commercial real estate	3,323,094			3,163,269
Agricultural and agricultural real estate	518,386			511,588
Residential real estate	624,725			624,279
Consumer	474,929			447,484
Gross loans receivable held to maturity	6,747,817			6,393,226
Unearned discount	(1,620		)	(556		)
Deferred loan fees	(182		)	(1,206		)
Total net loans receivable held to maturity	6,746,015			6,391,464
Allowance for loan losses	(58,656		)	(55,686		)
Loans receivable, net	$	6,687,359		$	6,335,778

Heartland has certain lending policies and procedures in place that are designed to provide for an acceptable level of credit risk. The board of directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans.

Diversification in the loan portfolio is also a means of managing risk associated with fluctuations in economic conditions. Heartland originates commercial and commercial real estate loans for a wide variety of business purposes, including lines of credit for capital and operating purposes and term loans for real estate and equipment purchases. Agricultural loans provide financing for capital improvements and farm operations, as well as livestock and machinery purchases. Residential mortgage loans are originated for the construction, purchase or refinancing of single family residential properties. Consumer loans include loans for motor vehicles, home improvement, home equity and personal lines of credit. Heartland's consumer finance subsidiaries, Citizens Finance Co. and Citizens Finance of Illinois Co., typically lend to borrowers with past credit problems or limited credit histories, which comprises approximately 15% of Heartland's total consumer loan portfolio.

Under Heartland’s credit practices, a loan is impaired when, based on current information and events, it is probable that Heartland will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loan impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except where more practical, impairment is measured at the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent.

The following table shows the balance in the allowance for loan losses at March 31, 2018, and December 31, 2017, and the related loan balances, disaggregated on the basis of impairment methodology, in thousands. Loans evaluated under ASC 310-10-35 include loans on nonaccrual status and troubled debt restructurings, which are individually evaluated for impairment, and other impaired loans deemed to have similar risk characteristics. All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan losses during 2018.

	Allowance For Loan Losses						Gross Loans Receivable Held to Maturity
	Ending Balance Under ASC 310-10-35		Ending Balance Under ASC 450-20		Total		Ending Balance Evaluated for Impairment Under ASC 310-10-35		Ending Balance Evaluated for Impairment Under ASC 450-20		Total
March 31, 2018
Commercial	$	2,425	$	16,970	$	19,395	$	9,005	$	1,797,678	$	1,806,683
Commercial real estate	736		22,733		23,469		22,920		3,300,174		3,323,094
Agricultural and agricultural real estate	787		3,929		4,716		16,896		501,490		518,386
Residential real estate	386		1,755		2,141		28,324		596,401		624,725
Consumer	1,137		7,798		8,935		6,427		468,502		474,929
Total	$	5,471	$	53,185	$	58,656	$	83,572	$	6,664,245	$	6,747,817
December 31, 2017
Commercial	$	1,613	$	16,485	$	18,098	$	7,415	$	1,639,191	$	1,646,606
Commercial real estate	766		21,184		21,950		23,705		3,139,564		3,163,269
Agricultural and agricultural real estate	546		3,712		4,258		13,304		498,284		511,588
Residential real estate	430		1,794		2,224		27,141		597,138		624,279
Consumer	1,400		7,756		9,156		6,903		440,581		447,484
Total	$	4,755	$	50,931	$	55,686	$	78,468	$	6,314,758	$	6,393,226

The following table presents nonaccrual loans, accruing loans past due 90 days or more and performing troubled debt restructured loans at March 31, 2018, and December 31, 2017, in thousands:

	March 31, 2018		December 31, 2017
Nonaccrual loans	$	60,644	$	58,272
Nonaccrual troubled debt restructured loans	4,162		4,309
Total nonaccrual loans	$	64,806	$	62,581
Accruing loans past due 90 days or more	$	22	$	830
Performing troubled debt restructured loans	$	3,206	$	6,617

The following tables provide information on troubled debt restructured loans that were modified during the three-month periods ended March 31, 2018, and March 31, 2017, dollars in thousands:

	Three Months Ended March 31,
	2018					2017
	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial	—	$	—	$	—	—	$	—	$	—
Commercial real estate	—	—		—		—	—		—
Total commercial and commercial real estate	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	5	877		752		3	348		348
Consumer	—	—		—		—	—		—
Total	5	$	877	$	752	3	$	348	$	348

The pre-modification and post-modification recorded investment represents amounts as of the date of loan modification. The change related to the pre-modification investment and post-modification investment amounts on Heartland's residential real estate trouble debt restructured loans is due to $142,000 of principal deferment collected from government guarantees and $17,000 of capitalized interest and escrow. At March 31, 2018, there were no commitments to extend credit to any of the borrowers with an existing troubled debt restructured loan.

The following table shows troubled debt restructured loans for which there was a payment default during the three month periods ended March 31, 2018, and March 31, 2017, that had been modified during the twelve-month period prior to default, in thousands:

	With Payment Defaults During the Following Periods
	Three Months Ended March 31,
	2018			2017
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial	—	$	—	—	$	—
Commercial real estate	—	—		—	—
Total commercial and commercial real estate	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	3	519		—	—
Consumer	—	—		—	—
Total	3	$	519	—	$	—

Heartland's internal rating system is a series of grades reflecting management's risk assessment, based on its analysis of the borrower's financial condition. The "pass" category consists of all loans that are not in the "nonpass" category, categorized into a range of loan grades that reflect increasing, though still acceptable, risk. Movement of risk through the various grade levels in the pass category is monitored for early identification of credit deterioration. The "nonpass" category consists of special mention, substandard, doubtful and loss loans. The "special mention" rating is attached to loans where the borrower exhibits negative trends in financial circumstances due to borrower specific or systemic conditions that, if left uncorrected, threaten the borrower's capacity to meet its debt obligations. The borrower is believed to have sufficient financial flexibility to react to and resolve its negative financial situation. These credits are closely monitored for improvement or deterioration. The "substandard" rating is assigned to loans that are inadequately protected by the current net worth and paying capacity of the borrower and that may be further at risk due to deterioration in the value of collateral pledged. Well-defined weaknesses jeopardize liquidation of the debt. These loans are still considered collectible; however, a distinct possibility exists that Heartland will sustain some loss if deficiencies are not corrected. Substandard loans may exhibit some or all of the following weaknesses: deteriorating financial trends, lack of earnings, inadequate debt service capacity, excessive debt and/or lack of liquidity. The "doubtful" rating is assigned to loans where identified

weaknesses in the borrowers' ability to repay the loan make collection or liquidation in full, on the basis of existing facts, conditions and values, highly questionable and improbable. These borrowers are usually in default, lack liquidity and capital, as well as resources necessary to remain as an operating entity. Specific pending events, such as capital injections, liquidations or perfection of liens on additional collateral, may strengthen the credit, thus deferring the rating of the loan as "loss" until the exact status of the loan can be determined. The loss rating is assigned to loans considered uncollectible. Heartland had no loans classified as loss or doubtful as of March 31, 2018. Loans are placed on "nonaccrual" when management does not expect to collect payments of principal and interest in full or when principal or interest has been in default for a period of 90 days or more, unless the loan is both well secured and in the process of collection.

The following table presents loans by credit quality indicator at March 31, 2018, and December 31, 2017, in thousands:

	Pass		Nonpass		Total
March 31, 2018
Commercial	$	1,677,338	$	129,345	$	1,806,683
Commercial real estate	3,146,622		176,472		3,323,094
Total commercial and commercial real estate	4,823,960		305,817		5,129,777
Agricultural and agricultural real estate	442,484		75,902		518,386
Residential real estate	585,886		38,839		624,725
Consumer	461,786		13,143		474,929
Total gross loans receivable held to maturity	$	6,314,116	$	433,701	$	6,747,817
December 31, 2017
Commercial	$	1,552,783	$	93,823	$	1,646,606
Commercial real estate	2,985,501		177,768		3,163,269
Total commercial and commercial real estate	4,538,284		271,591		4,809,875
Agricultural and agricultural real estate	451,539		60,049		511,588
Residential real estate	586,623		37,656		624,279
Consumer	432,936		14,548		447,484
Total gross loans receivable held to maturity	$	6,009,382	$	383,844	$	6,393,226

The nonpass category in the table above is comprised of approximately 55% special mention loans and 45% substandard loans as of March 31, 2018. The percent of nonpass loans on nonaccrual status as of March 31, 2018, was 15%. As of December 31, 2017, the nonpass category in the table above was comprised of approximately 52% special mention loans and 48% substandard loans. The percent of nonpass loans on nonaccrual status as of December 31, 2017, was 16%. Loans delinquent 30 to 89 days as a percent of total loans were 0.21% at March 31, 2018, compared to 0.27% at December 31, 2017. Changes in credit risk are monitored on a regular basis and changes in risk ratings are made when identified. All impaired loans are reviewed at least annually.

As of March 31, 2018, Heartland had $2.8 million of loans secured by residential real estate property that were in the process of foreclosure.

The following table sets forth information regarding Heartland's accruing and nonaccrual loans at March 31, 2018, and December 31, 2017, in thousands:

	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
March 31, 2018
Commercial	$	2,906	$	1,883	$	—	$	4,789	$	1,793,565	$	8,329	$	1,806,683
Commercial real estate	403		740		—		1,143		3,305,043		16,908		3,323,094
Total commercial and commercial real estate	3,309		2,623		—		5,932		5,098,608		25,237		5,129,777
Agricultural and agricultural real estate	1,147		69		22		1,238		500,320		16,828		518,386
Residential real estate	2,891		66		—		2,957		602,927		18,841		624,725
Consumer	2,618		1,477		—		4,095		466,934		3,900		474,929
Total gross loans receivable held to maturity	$	9,965	$	4,235	$	22	$	14,222	$	6,668,789	$	64,806	$	6,747,817
December 31, 2017
Commercial	$	1,246	$	259	$	100	$	1,605	$	1,637,773	$	7,228	$	1,646,606
Commercial real estate	4,769		2,326		—		7,095		3,139,576		16,598		3,163,269
Total commercial and commercial real estate	6,015		2,585		100		8,700		4,777,349		23,826		4,809,875
Agricultural and agricultural real estate	604		134		—		738		497,546		13,304		511,588
Residential real estate	2,022		270		—		2,292		601,120		20,867		624,279
Consumer	4,734		943		730		6,407		436,493		4,584		447,484
Total gross loans receivable held to maturity	$	13,375	$	3,932	$	830	$	18,137	$	6,312,508	$	62,581	$	6,393,226

The majority of Heartland's impaired loans are on nonaccrual or have had their terms restructured in a troubled debt restructuring. The following tables present, by category of loan, impaired loans, the unpaid contractual loan balances at March 31, 2018, and December 31, 2017; the outstanding loan balances recorded on the consolidated balance sheets at March 31, 2018, and December 31, 2017; any related allowance recorded for those loans as of March 31, 2018, and December 31, 2017; the average outstanding loan balances recorded on the consolidated balance sheets during the three-months ended March 31, 2018, and year ended December 31, 2017; and the interest income recognized on the impaired loans during the three-month period ended March 31, 2018, and year ended December 31, 2017, in thousands:

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year- to- Date Avg. Loan Balance		Year- to- Date Interest Income Recognized
March 31, 2018
Impaired loans with a related allowance:
Commercial	$	2,816	$	2,816	$	2,425	$	2,472	$	—
Commercial real estate	11,180		9,324		736		9,520		8
Total commercial and commercial real estate	13,996		12,140		3,161		11,992		8
Agricultural and agricultural real estate	1,536		1,536		787		1,537		—
Residential real estate	1,693		1,693		386		1,608		3
Consumer	2,859		2,859		1,137		3,069		9
Total impaired loans with a related allowance	$	20,084	$	18,228	$	5,471	$	18,206	$	20
Impaired loans without a related allowance:
Commercial	$	7,308	$	6,189	$	—	$	5,449	$	49
Commercial real estate	14,202		13,596		—		13,879		97
Total commercial and commercial real estate	21,510		19,785		—		19,328		146
Agricultural and agricultural real estate	17,388		15,360		—		12,954		1
Residential real estate	26,635		26,631		—		26,878		109
Consumer	3,757		3,568		—		3,912		22
Total impaired loans without a related allowance	$	69,290	$	65,344	$	—	$	63,072	$	278
Total impaired loans held to maturity:
Commercial	$	10,124	$	9,005	$	2,425	$	7,921	$	49
Commercial real estate	25,382		22,920		736		23,399		105
Total commercial and commercial real estate	35,506		31,925		3,161		31,320		154
Agricultural and agricultural real estate	18,924		16,896		787		14,491		1
Residential real estate	28,328		28,324		386		28,486		112
Consumer	6,616		6,427		1,137		6,981		31
Total impaired loans held to maturity	$	89,374	$	83,572	$	5,471	$	81,278	$	298

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year-to- Date Avg. Loan Balance		Year-to- Date Interest Income Recognized
December 31, 2017
Impaired loans with a related allowance:
Commercial	$	2,292	$	2,292	$	1,613	$	3,607	$	39
Commercial real estate	11,925		10,068		766		11,479		34
Total commercial and commercial real estate	14,217		12,360		2,379		15,086		73
Agricultural and agricultural real estate	1,539		1,539		546		3,437		—
Residential real estate	1,568		1,568		430		2,056		15
Consumer	2,634		2,634		1,400		2,370		41
Total impaired loans with a related allowance	$	19,958	$	18,101	$	4,755	$	22,949	$	129
Impaired loans without a related allowance:
Commercial	$	6,243	$	5,123	$	—	$	2,586	$	165
Commercial real estate	14,243		13,637		—		20,148		514
Total commercial and commercial real estate	20,486		18,760		—		22,734		679
Agricultural and agricultural real estate	13,793		11,765		—		9,654		—
Residential real estate	25,573		25,573		—		26,024		277
Consumer	4,269		4,269		—		3,884		73
Total impaired loans without a related allowance	$	64,121	$	60,367	$	—	$	62,296	$	1,029
Total impaired loans held to maturity:
Commercial	$	8,535	$	7,415	$	1,613	$	6,193	$	204
Commercial real estate	26,168		23,705		766		31,627		548
Total commercial and commercial real estate	34,703		31,120		2,379		37,820		752
Agricultural and agricultural real estate	15,332		13,304		546		13,091		—
Residential real estate	27,141		27,141		430		28,080		292
Consumer	6,903		6,903		1,400		6,254		114
Total impaired loans held to maturity	$	84,079	$	78,468	$	4,755	$	85,245	$	1,158

On February 23, 2018, Heartland acquired Signature Bancshares, Inc., parent company of Signature Bank, based in Minnetonka, Minnesota. As of February 23, 2018, Signature Bancshares, Inc. had gross loans of $335.1 million and the estimated fair value of the loans acquired was $324.5 million. Included in loans acquired from Signature Bank is a lease portfolio with a fair value of $16.0 million. The lease portfolio is include with the commercial loan category for disclosure purposes.

On July 7, 2017, Heartland acquired Citywide Banks of Colorado, Inc., parent company of Citywide Banks, based in Denver, Colorado. As of July 7, 2017, Citywide Banks had gross loans of $1.00 billion, and the estimated fair value of the loans acquired was $985.4 million.

On February 28, 2017, Heartland acquired Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California. As of February 28, 2017, Founders Community Bank had gross loans of $98.9 million, and the estimated fair value of the loans acquired was $96.4 million.

Heartland uses the acquisition method of accounting for purchased loans in accordance with ASC 805, "Business Combinations." Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date, but the purchaser cannot carry over the related allowance for loan losses. Purchased loans are accounted for under ASC 310-30, "Loans and Debt Securities with Deteriorated Credit Quality," when the loans have evidence of credit deterioration since origination, and when at the date of the acquisition, it is probable that Heartland will not collect all contractually required principal and interest payments. Evidence of credit quality deterioration at the purchase date includes statistics such as past due and nonaccrual status. Generally, acquired loans that meet Heartland’s definition for nonaccrual status fall within the scope of ASC 310-30. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference, which is included in the carrying value of the loans. Subsequent decreases to the expected cash flows of the loan will generally result in a provision for loan losses. Subsequent increases in cash flows result in a reversal of the provision for loan losses to the extent of prior charges, or a reclassification of the difference from nonaccretable to accretable with a positive

impact on future interest income. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.

At March 31, 2018, and December 31, 2017, the carrying amount of loans acquired since 2015 consist of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:

	March 31, 2018						December 31, 2017
	Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans		Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans
Commercial	$	3,142	$	262,107	$	265,249	$	952	$	187,375	$	188,327
Commercial real estate	2,474		1,078,724		1,081,198		2,572		1,052,469		1,055,041
Agricultural and agricultural real estate	—		26		26		—		1,242		1,242
Residential real estate	199		181,020		181,219		214		173,909		174,123
Consumer loans	—		78,613		78,613		—		51,292		51,292
Total loans	$	5,815	$	1,600,490	$	1,606,305	$	3,738	$	1,466,287	$	1,470,025

Changes in accretable yield on acquired loans with evidence of credit deterioration at the date of acquisition for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Three Months Ended March 31,
	2018			2017
Balance at beginning of period	$	57		$	182
Original yield premium, net, at date of acquisition	(56		)	—
Accretion	(199		)	(173		)
Reclassification from nonaccretable difference(1)	198			127
Balance at period end	$	—		$	136
(1) Represents increases in estimated cash flows expected to be received, primarily due to lower estimated credit losses.

For loans acquired since January 2015, on the acquisition dates the preliminary estimate of the contractually required payments receivable for all loans with evidence of credit deterioration since origination was $26.0 million, and the estimated fair value of these loans was $15.0 million. At March 31, 2018, a majority of these loans were valued based upon the liquidation value of the underlying collateral, because the expected cash flows are primarily based on the liquidation of such collateral, and the timing and amount of the cash flows could not be reasonably estimated. At March 31, 2018, there was no allowance recorded and $139,000 of allowance recorded at December 31, 2017, related to these ASC 310-30 loans. Provision expense of $0 and $1,000 was recorded for the three-month periods ended March 31, 2018, and 2017, respectively.

For loans acquired since January 2015, the preliminary estimate on the acquisition dates of the contractually required payments receivable for all nonimpaired loans acquired was $2.99 billion, and the estimated fair value of the loans was $2.91 billion.

NOTE 5: ALLOWANCE FOR LOAN LOSSES

Changes in the allowance for loan losses for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Commercial			Commercial Real Estate			Agricultural		Residential Real Estate			Consumer			Total
Balance at December 31, 2017	$	18,098		$	21,950		$	4,258	$	2,224		$	9,156		$	55,686
Charge-offs	(794		)	(125		)	—		(16		)	(1,289		)	(2,224		)
Recoveries	104			448			14		75			290			931
Provision	1,987			1,196			444		(142		)	778			4,263
Balance at March 31, 2018	$	19,395		$	23,469		$	4,716	$	2,141		$	8,935		$	58,656

	Commercial			Commercial Real Estate			Agricultural			Residential Real Estate			Consumer			Total
Balance at December 31, 2016	$	14,765		$	24,319		$	4,210		$	2,263		$	8,767		$	54,324
Charge-offs	(230		)	(608		)	(871		)	(265		)	(1,744		)	(3,718		)
Recoveries	234			212			1			2			303			752
Provision	1,411			(126		)	643			183			1,530			3,641
Balance at March 31, 2017	$	16,180		$	23,797		$	3,983		$	2,183		$	8,856		$	54,999

Management allocates the allowance for loan losses by pools of risk within each loan portfolio. The allocation of the allowance for loan losses by loan portfolio is made for analytical purposes and is not necessarily indicative of the trend of future loan losses in any particular category. The total allowance for loan losses is available to absorb losses from any segment of the loan portfolio.

NOTE 6: GOODWILL, CORE DEPOSIT PREMIUM AND OTHER INTANGIBLE ASSETS

Heartland had goodwill of $270.3 million at March 31, 2018, and $236.6 million at December 31, 2017. Heartland conducts its annual internal assessment of the goodwill both at the consolidated level and at its subsidiaries as of September 30. There was no goodwill impairment as of the most recent assessment.

Heartland recorded $33.7 million of goodwill and $7.7 million of core deposit intangibles in connection with the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, headquartered in Minnetonka, Minnesota on February 23, 2018.

Heartland recorded $95.2 million of goodwill and $16.0 million of core deposit intangibles in connection with the acquisition of Citywide Banks of Colorado, Inc., parent company of Citywide Banks, headquartered in Aurora, Colorado on July 7, 2017.

Heartland recorded $13.8 million of goodwill and $2.5 million of core deposit intangibles in connection with the acquisition of Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California on February 28, 2017.

The core deposit intangibles recorded with the Signature Bancshares, Inc., Citywide Banks of Colorado, Inc., and Founders Bancorp acquisitions are not deductible for tax purposes and are expected to be amortized over a period of 10 years on an accelerated basis.

Goodwill related to the Signature Bancshares, Inc., Citywide Banks of Colorado, Inc., and Founders Bancorp acquisitions resulted from expected operational synergies, increased market presence, cross-selling opportunities, and expanded business lines and is not deductible for tax purposes.

Heartland's intangible assets consist of core deposit intangibles, mortgage servicing rights, customer relationship intangibles, and commercial servicing rights. The gross carrying amount of these intangible assets and the associated accumulated amortization at March 31, 2018, and December 31, 2017, are presented in the table below, in thousands:

	March 31, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	69,731	$	28,939	$	40,792	$	62,008	$	27,086	$	34,922
Customer relationship intangibles	1,177		906		271		1,177		896		281
Mortgage servicing rights	42,249		19,084		23,165		42,139		18,891		23,248
Commercial servicing rights	6,740		4,434		2,306		6,719		4,110		2,609
Total	$	119,897	$	53,363	$	66,534	$	112,043	$	50,983	$	61,060

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:

	Core Deposit Intangibles		Customer Relationship Intangibles		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Nine months ending December 31, 2018	$	5,957	$	29	$	6,776	$	471	$	13,233
Year ending December 31,
2019	7,092		38		4,097		522		11,749
2020	6,220		37		3,512		411		10,180
2021	5,323		36		2,927		354		8,640
2022	4,175		34		2,341		290		6,840
2023	3,691		33		1,756		163		5,643
Thereafter	8,334		64		1,756		95		10,249
Total	$	40,792	$	271	$	23,165	$	2,306	$	66,534

Projections of amortization expense for mortgage servicing rights are based on existing asset balances and the existing interest rate environment as of March 31, 2018. Heartland's actual experience may be significantly different depending upon changes in mortgage interest rates and market conditions. Mortgage loans serviced for others were approximately $3.54 billion and $3.56 billion as of March 31, 2018, and December 31, 2017, respectively. Custodial escrow balances maintained in connection with the mortgage loan servicing portfolio were approximately $23.2 million and $17.3 million as of March 31, 2018, and December 31, 2017, respectively. The fair value of Heartland's mortgage servicing rights was estimated at $40.4 million at March 31, 2018, and $37.1 million at December 31, 2017.

Heartland's mortgage servicing rights portfolio is comprised of loans serviced for the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC"). Prior to the third quarter of 2017, Heartland also serviced loans for the Government National Mortgage Association ("GNMA"). The servicing rights portfolio is separated into 15- and 30-year tranches, and the servicing rights portfolio is an asset of one of Heartland's subsidiaries.

During the third quarter of 2017, Heartland entered into an agreement to sell substantially all of its GNMA servicing portfolio, which contained loans with an unpaid principal balance of approximately $773.9 million. The transaction qualified as a sale, and $6.9 million of mortgage servicing rights were de-recognized on the consolidated balance sheet as of December 31, 2017.

The fair value of mortgage servicing rights is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds, servicing costs and escrow earnings are considered in the calculation. The average constant prepayment rate was8.23%and9.73%for theMarch 31, 2018, andDecember 31, 2017, valuations, respectively. The discount rate was9.04%and9.06%for theMarch 31, 2018, andDecember 31, 2017, valuations, respectively. The average capitalization rate for the firstthreemonths of2018ranged from96to125basis points compared to the range of91to150basis points for2017. Fees collected for the servicing of mortgage loans for others were $2.2 million and $3.2 million for the three months ended March 31, 2018, and March 31, 2017.

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	23,248		$	32,088
Originations	1,162			2,132
Amortization	(1,245		)	(2,261		)
Balance at period end	$	23,165		$	31,959
Fair value of mortgage servicing rights	$	40,434		$	47,564
Mortgage servicing rights, net to servicing portfolio	0.66		%	0.74		%

Heartland's commercial servicing portfolio is comprised of loans guaranteed by the Small Business Administration and United States Department of Agriculture that have been sold with servicing retained by Heartland, which totaled $125.5 million at March 31, 2018 and $139.9 million at December 31, 2017. The commercial servicing rights portfolio is separated into two tranches at the respective Heartland subsidiary, loans with a term of less than 20 years and loans with a term of more than 20 years. Fees

collected for the servicing of commercial loans for others were $420,000 and $415,000 for the three months ended March 31, 2018, and March 31, 2017, respectively.

The fair value of each commercial servicing rights portfolio is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds and servicing costs, are considered in the calculation. The range of average constant prepayment rates for the valuations was 8.27% to 9.89% as of March 31, 2018, compared to 7.27% to 8.88% as of December 31, 2017. The discount rate range was 13.09% to 16.71% for the March 31, 2018, valuations compared to 13.04% to 15.49% for the December 31, 2017, valuations. The capitalization rate for 2018 ranged from 310 to 445 basis points compared to 310 to 445 basis points for 2017. The total fair value of Heartland's commercial servicing rights was estimated at $2.8 million as of March 31, 2018, and $3.2 million as of December 31, 2017.

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	2,609		$	3,690
Originations	21			93
Amortization	(322		)	(306		)
Valuation allowance on commercial servicing rights	(2		)	5
Balance at period end	$	2,306		$	3,482
Fair value of commercial servicing rights	$	2,781		$	4,040
Commercial servicing rights, net to servicing portfolio	1.84		%	2.17		%

Mortgage and commercial servicing rights are initially recorded at fair value in net gains on sale of loans held for sale when they are acquired through loan sales. Fair value is based on market prices for comparable servicing contracts, when available, or based on a valuation model that calculates the present value of estimated future net servicing income.

Mortgage and commercial servicing rights are subsequently measured using the amortization method, which requires the asset to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment at each Heartland subsidiary based upon the fair value of the assets as compared to the carrying amount. Impairment is recognized through a valuation allowance for specific tranches to the extent that fair value is less than carrying amount at each Heartland subsidiary. At March 31, 2018, no valuation allowance was required on commercial servicing rights with a term less than 20 years and a $14,000 valuation allowance was required on commercial servicing rights with a term greater than 20 years. At December 31, 2017, no valuation allowance was required on commercial servicing rights with a term less than 20 years and a $12,000 valuation allowance was required on commercial servicing rights with a term greater than 20 years.

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights and any recorded valuation allowance at each respective subsidiary at March 31, 2018, and December 31, 2017:

March 31, 2018	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Impairment- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years		Impairment- More than 20 Years
Citywide Banks	$	6	$	10	$	—	$	33	$	36	$	—
Premier Valley Bank	72		104		—		286		272		14
Wisconsin Bank & Trust	368		534		—		1,554		1,825		—
Total	$	446	$	648	$	—	$	1,873	$	2,133	$	14
December 31, 2017
Citywide Banks	$	8	$	11	$	—	$	34	$	37	$	—
Premier Valley Bank	83		110		—		303		291		12
Wisconsin Bank & Trust	446		619		—		1,747		2,153		—
Total	$	537	$	740	$	—	$	2,084	$	2,481	$	12

NOTE 7: DERIVATIVE FINANCIAL INSTRUMENTS

Heartland uses derivative financial instruments as part of its interest rate risk management strategy. As part of the strategy, Heartland considers the use of interest rate swaps, caps, floors, collars, and certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. Heartland's current strategy includes the use of interest rate swaps, interest rate lock commitments and forward sales of mortgage securities. In addition, Heartland is facilitating back-to-back loan swaps to assist customers in managing interest rate risk. Heartland's objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. Heartland is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. Heartland minimizes this risk by entering into derivative contracts with counterparties that meet Heartland’s credit standards, and the contracts contain collateral provisions protecting the at-risk party. Heartland has not experienced any losses from nonperformance by these counterparties. Heartland monitors counterparty risk in accordance with the provisions of ASC 815.

In addition, interest rate-related derivative instruments generally contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. Heartland was required to pledge no cash as collateral at March 31, 2018, and $1.2 million at December 31, 2017. At March 31, 2018, $860,000 of collateral was required to be pledged by Heartland's counterparties, compared to no collateral at December 31, 2017.

Heartland's derivative and hedging instruments are recorded at fair value on the consolidated balance sheets. See Note 8, “Fair Value,” for additional fair value information and disclosures.

Cash Flow Hedges

Heartland has variable rate funding which creates exposure to variability in interest payments due to changes in interest rates. To manage the interest rate risk related to the variability of interest payments, Heartland has entered into various interest rate swap agreements. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are received or made on Heartland's variable-rate liabilities. For the three months ended March 31, 2018, the change in net unrealized losses on cash flow hedges reflects changes in the fair value of the swaps and reclassification from accumulated other comprehensive income to interest expense totaling $197,000. For the next twelve months, Heartland estimates that cash payments and reclassification from accumulated other comprehensive income to interest expense will total $789,000.

Heartland entered into five forward starting interest rate swap transactions to effectively convert Heartland Financial Statutory Trust IV, V, and VII, which total $65.0 million, as well as Morrill Statutory Trust I and II, which total $20.0 million, from variable rate subordinated debentures to fixed rate debt. For accounting purposes, these five swap transactions are designated as cash flow hedges of the changes in LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on $85.0 million of Heartland's subordinated debentures that reset quarterly on a specified reset date. At inception, Heartland asserted that the underlying principal balance would remain outstanding throughout the hedge transaction, making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps.

The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as cash flow hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Receive Rate		Weighted Average Pay Rate		Maturity
March 31, 2018
Interest rate swap	$	25,000	$	239		Other assets	2.178	%	2.255	%	03/17/2021
Interest rate swap	20,000		(380		)	Other liabilities	1.704		3.355		01/07/2020
Interest rate swap	10,000		69			Other assets	2.286		1.674		03/26/2019
Interest rate swap	10,000		68			Other assets	2.178		1.658		03/18/2019
Interest rate swap	32,667		1,010			Other assets	4.240		3.674		05/10/2021
Interest rate swap	20,000		316			Other assets	2.125		2.390		06/15/2024
Interest rate swap	20,000		339			Other assets	2.006		2.352		03/01/2024
December 31, 2017
Interest rate swap	$	25,000	$	(106	)	Other liabilities	1.600	%	2.255	%	03/17/2021
Interest rate swap	20,000		(621		)	Other liabilities	1.350		3.355		01/07/2020
Interest rate swap	10,000		30			Other assets	1.329		1.674		03/26/2019
Interest rate swap	10,000		29			Other assets	1.600		1.658		03/18/2019
Interest rate swap	33,667		759			Other assets	3.932		3.674		05/10/2021
Interest rate swap(1)	20,000		(177		)	Other liabilities	1.588		2.390		06/15/2024
Interest rate swap(2)	20,000		(149		)	Other Liabilities	1.481		2.352		03/01/2024

The table below identifies the gains and losses recognized on Heartland's derivative instruments designated as cash flow hedges for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Effective Portion						Ineffective Portion
	Recognized in OCI		Reclassified from AOCI into Income				Recognized in Income on Derivatives
	Amount of Gain (Loss)		Category	Amount of Gain (Loss)			Category	Amount of Gain (Loss)
Three Months Ended March 31, 2018
Interest rate swaps	$	1,896	Interest expense	$	(197	)	Other income	$	—
Three Months Ended March 31, 2017
Interest rate swaps	$	533	Interest expense	$	(397	)	Other income	$	—

Fair Value Hedges

Heartland uses interest rate swaps to convert certain long term fixed rate loans to floating rates to hedge interest rate risk exposure. Heartland uses hedge accounting in accordance with ASC 815, with the unrealized gains and losses, representing the change in fair value of the derivative and the change in fair value of the risk being hedged on the related loan, being recorded in the consolidated statements of income. The ineffective portions of the unrealized gains or losses, if any, are recorded in interest income and interest expense in the consolidated statements of income. Heartland uses statistical regression to assess hedge effectiveness, both at the inception of the hedge as well as on a continual basis. The regression analysis involves regressing the periodic change in the fair value of the hedging instrument against the periodic changes in the fair value of the asset being hedged due to changes in the hedge risk.

Heartland was required to pledge $3.2 million and $3.9 million of cash as collateral for these fair value hedges at March 31, 2018, and December 31, 2017, respectively.

The table below identifies the notional amount, fair value and balance sheet category of Heartland's fair value hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category
March 31, 2018
Fair value hedges	$	35,436	$	(105	)	Other liabilities
December 31, 2017
Fair value hedges	$	35,635	$	(999	)	Other liabilities

The table below identifies the gains and losses recognized on Heartland's fair value hedges for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Fair value hedges	$	894	Interest income
Three Months Ended March 31, 2017
Fair value hedges	$	194	Interest income

Embedded Derivatives

Heartland has fixed rate loans with embedded derivatives. The loans contain terms that affect the cash flows or value of the loan similar to a derivative instrument, and therefore are considered to contain an embedded derivative. The embedded derivatives are bifurcated from the loans because the terms of the derivative instrument are not clearly and closely related to the loans. The embedded derivatives are recorded at fair value on the consolidated balance sheets as a part of other assets, and changes in the fair value are a component of noninterest income. The table below identifies the notional amount, fair value and balance sheet category of Heartland's embedded derivatives at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded derivatives	$	13,907	$	461	Other assets
December 31, 2017
Embedded derivatives	$	14,045	$	738	Other assets

The table below identifies the gains and losses recognized on Heartland's embedded derivatives for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded derivatives	$	277	Other noninterest income
Three Months Ended March 31, 2017
Embedded derivatives	$	117	Other noninterest income

In conjunction with the CIC Bancshares, Inc. transaction on February 5, 2016, Heartland assumed convertible subordinated debt. The subordinated debt has a face value of $2.0 million, and the embedded conversion option allows the holder to convert the debt to Heartland common equity in any increment and at the discretion of the holder. The conversion option is bifurcated from the debt because the terms of the conversion option are not clearly and closely related to the terms of the debt. On February 5, 2016, the total number of shares to be issued upon conversion was 73,394.

At March 31, 2018, and December 31, 2017, the remaining shares to be issued upon conversion totaled zero. During 2017, all of the remaining convertible subordinated debt was converted to common stock, resulting in the issuance of 20,481 shares of common stock. The embedded conversion option was reported at fair value on the consolidated balance sheets using the Black-Scholes model. The following table identifies, in thousands, the notional amount, fair value, balance sheet category and income statement category for the change in fair value of the embedded conversion option as of March 31, 2018, and December 31, 2017:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded conversion option	$	—	$	—	Other liabilities
December 31, 2017
Embedded conversion option	$	—	$	—	Other liabilities

The table below identifies the gains and losses recognized on Heartland's embedded conversion options for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded conversion option	$	—	Other noninterest income
Three Months Ended March 31, 2017
Embedded conversion option	$	97	Other noninterest income

Back-to-Back Loan Swaps

Heartland has interest rate swap loan relationships with customers to meet their financing needs. Upon entering into these loan swaps, Heartland enters into offsetting positions with counterparties in order to minimize interest rate risk. These back-to-back loan swaps qualify as free standing financial derivatives with the fair values reported in other assets and other liabilities on the consolidated balance sheets. Heartland was required to post $495,000 and $1.6 million as of March 31, 2018, and December 31, 2017, respectively, as collateral related to these back-to-back swaps. Heartland's counterparties were required to pledge $1.6 million at March 31, 2018, and $190,000 at December 31, 2017. Any gains and losses on these back-to-back swaps are recorded in noninterest income on the consolidated statements of income, and for the three months ended March 31, 2018 and March 31, 2017, no gain or loss was recognized. The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as loan swaps at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Weighted Average Receive Rate		Weighted Average Pay Rate
March 31, 2018
Customer interest rate swaps	$	162,882	$	3,763		Other assets	4.82	%	4.73	%
Customer interest rate swaps	162,882		(3,763		)	Other liabilities	4.73		4.82
December 31, 2017
Customer interest rate swaps	$	126,766	$	2,377		Other assets	4.70	%	4.03	%
Customer interest rate swaps	126,766		(2,377		)	Other liabilities	4.03		4.70

Other Free Standing Derivatives

Heartland has entered into interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities that are considered derivative instruments. Heartland enters into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on the commitments to fund the loans as well as on residential mortgage loans available for sale. The fair value of these commitments is recorded on the consolidated balance sheets, with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment. Heartland was required to pledge collateral of $203,000 at March 31, 2018, and $20,000 at December 31, 2017. Heartland's counterparties were required to pledge $0 and $29,000 at March 31, 2018, and December 31, 2017, respectively, as collateral for these forward commitments.

Heartland acquired undesignated interest rate swaps in 2015. These swaps were entered into primarily for the benefit of customers seeking to manage their interest rate risk and are not designated against specific assets or liabilities on the consolidated balance sheet or forecasted transactions and therefore do not qualify for hedge accounting in accordance with ASC 815. These swaps are carried at fair value on the consolidated balance sheets as a component of other liabilities, with changes in the fair value recorded as a component of other noninterest income.

The table below identifies the balance sheet category and fair values of Heartland's other free standing derivative instruments not designated as hedging instruments at March 31, 2018, and December 31, 2017, in thousands:

	Balance Sheet Category	Notional Amount		Fair Value
March 31, 2018
Interest rate lock commitments (mortgage)	Other assets	$	65,591	$	1,959
Forward commitments	Other assets	55,118		283
Forward commitments	Other liabilities	91,625		(320		)
Undesignated interest rate swaps	Other liabilities	13,907		(461		)
December 31, 2017
Interest rate lock commitments (mortgage)	Other assets	$	53,588	$	1,738
Forward commitments	Other assets	37,286		80
Forward commitments	Other liabilities	118,632		(232		)
Undesignated interest rate swaps	Other liabilities	14,045		(738		)

The table below identifies the income statement category of the gains and losses recognized in income on Heartland's other free standing derivative instruments not designated as hedging instruments for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Income Statement Category	Gain (Loss) Recognized
Three Months Ended March 31, 2018
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	17
Forward commitments	Net gains on sale of loans held for sale	115
Undesignated interest rate swaps	Other noninterest income	277
Three Months Ended March 31, 2017
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	1,062
Forward commitments	Net gains on sale of loans held for sale	(2,739		)
Undesignated interest rate swaps	Other noninterest income	117

NOTE 8: FAIR VALUE

Heartland utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Securities available for sale, trading securities and derivatives are recorded in the consolidated balance sheets at fair value on a recurring basis. Additionally, from time to time, Heartland may be required to record at fair value other assets on a nonrecurring basis such as loans held for sale, loans held to maturity and certain other assets including, but not limited to, mortgage servicing rights, commercial servicing rights and other real estate owned. These nonrecurring fair value adjustments typically involve application of the lower of cost or fair value accounting or write-downs of individual assets.

Fair Value Hierarchy

Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.

Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for all significant assumptions are observable in the market.

Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis.

Assets

Securities Available for Sale and Held to Maturity

Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost and are recorded at fair value only to the extent a decline in fair value is determined to be other-than-temporary. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage and asset-backed securities and private collateralized mortgage obligations, municipal bonds and corporate debt securities. On a quarterly basis, a secondary independent pricing service is used for the securities portfolio to validate the pricing from Heartland's primary pricing service.

Loans Held for Sale

Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, Heartland classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2.

Loans Held to Maturity

Heartland does not record loans held to maturity at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment in accordance with ASC 310. The fair value of impaired loans is measured using one of the following impairment methods: 1) the present value of expected future cash flows discounted at the loan's effective interest rate or 2) the observable market price of the loan or 3) the fair value of the collateral if the loan is collateral dependent. In accordance with ASC 820, impaired loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy.

Premises, Furniture and Equipment Held for Sale

Heartland values premises, furniture and equipment held for sale based on third-party appraisals less estimated disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from Realtors or persons involved in selling bank premises, furniture and equipment, in determining the fair value of particular properties. Accordingly, the valuation of premises, furniture and equipment held for sale is subject to significant external and internal judgment. Heartland periodically reviews premises, furniture and equipment held for sale to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. Premises, furniture and equipment held for sale are classified as nonrecurring Level 3 in the fair value hierarchy.

Mortgage Servicing Rights

Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its mortgage servicing rights. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of the assumptions in the discounted cash flow analysis require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a fair value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs.

Commercial Servicing Rights

Commercial servicing rights assets represent the value associated with servicing commercial loans guaranteed by the Small Business Administration and the United States Department of Agriculture that have been sold with servicing retained by Heartland. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its commercial servicing rights. The fair value for servicing assets is determined through market prices for comparable servicing contracts, when available, or through a valuation model that calculates the present value of estimated future net servicing income. Inputs utilized include discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Commercial servicing rights are subject to impairment testing, and the carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. If the valuation model reflects a fair value less than the carrying value, commercial servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies commercial servicing rights as nonrecurring with Level 3 measurement inputs.

Derivative Financial Instruments

Heartland's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, Heartland incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, Heartland has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although Heartland has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2018, and December 31, 2017, Heartland has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, Heartland has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Interest rate lock commitments

Heartland uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy.

Forward commitments

The fair value of forward commitments are estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that Heartland has the ability to access and are classified in Level 2 of the fair value hierarchy.

Other Real Estate Owned

Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. Heartland periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3 of the fair value hierarchy.

The table below presents Heartland's assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2018, and December 31, 2017, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:

	Total Fair Value		Level 1		Level 2		Level 3
March 31, 2018
Assets
Securities available for sale
U.S. government corporations and agencies	$	11,188	$	9,421	$	1,767	$	—
Mortgage and asset-backed securities	1,647,604		—		1,647,604		—
Obligations of states and political subdivisions	352,180		—		352,180		—
Corporate debt securities	—		—		—		—
Equity securities	16,693		—		16,693		—
Derivative financial instruments(1)	6,265		—		6,265		—
Interest rate lock commitments	1,959		—		—		1,959
Forward commitments	283		—		283		—
Total assets at fair value	$	2,036,172	$	9,421	$	2,024,792	$	1,959
Liabilities
Derivative financial instruments(2)	$	4,709	$	—	$	4,709	$	—
Forward commitments	320		—		320		—
Total liabilities at fair value	$	5,029	$	—	$	5,029	$	—
December 31, 2017
Assets
Securities available for sale
U.S. government corporations and agencies	$	5,328	$	3,484	$	1,844	$	—
Mortgage and asset-backed securities	1,753,736		—		1,753,736		—
Obligations of states and political subdivisions	441,015		—		441,015		—
Equity securities	16,674		—		16,674		—
Derivative financial instruments(1)	3,933		—		3,933		—
Interest rate lock commitments	1,738		—		—		1,738
Forward commitments	80		—		80		—
Total assets at fair value	$	2,222,504	$	3,484	$	2,217,282	$	1,738
Liabilities
Derivative financial instruments(2)	$	5,167	$	—	$	5,167	$	—
Forward commitments	232		—		232		—
Total liabilities at fair value	$	5,399	$	—	$	5,399	$	—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

The tables below present Heartland's assets that are measured at fair value on a nonrecurring basis, in thousands:

	Fair Value Measurements at March 31, 2018
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	2,923	$	—	$	—	$	2,923	$	—
Commercial real estate	8,316		—		—		8,316		—
Agricultural and agricultural real estate	8,041		—		—		8,041		—
Residential real estate	1,421		—		—		1,421		4
Consumer	1,721		—		—		1,721		—
Total collateral dependent impaired loans	$	22,422	$	—	$	—	$	22,422	$	4
Loans held for sale	$	24,376	$	—	$	24,376	$	—	$	288
Other real estate owned	$	11,801	$	—	$	—	$	11,801	$	16
Premises, furniture and equipment held for sale	$	1,477	$	—	$	—	$	1,477	$	(115	)
Commercial servicing rights	$	272	$	—	$	—	$	272	$	2

	Fair Value Measurements at December 31, 2017
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	3,212	$	—	$	—		$	3,212	$	1,119
Commercial real estate	9,480		—		—			9,480		322
Agricultural and agricultural real estate	8,406		—		—			8,406		2,028
Residential real estate	1,137		—		—			1,137		—
Consumer	1,234		—		—			1,234		—
Total collateral dependent impaired loans	$	23,469	$	—	$	—	—	$	23,469	$	3,469
Loans held for sale	$	44,560	$	—	$	44,560		$	—	$	190
Other real estate owned	$	10,777	$	—	$	—		$	10,777	$	737
Premises, furniture and equipment held for sale	$	1,977	$	—	$	—		$	1,977	$	192
Commercial servicing rights	$	291	$	—	$	—		$	291	$	(21	)

The following tables present additional quantitative information about assets measured at fair value and for which Heartland has utilized Level 3 inputs to determine fair value, in thousands:

	Fair Value at 3/31/2018		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,959	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,477		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial servicing rights	272		Discounted cash flows	Third party valuation	(3)
Other real estate owned	11,801		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	2,923		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial real estate	8,316		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Agricultural and agricultural real estate	8,041		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,421		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,721		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-14%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

	Fair Value at 12/31/2017		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,738	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,977		Modified appraised value	Third party appraisal	(2) 0-10%(4)
Commercial servicing rights	291		Discounted cash flows	Third party valuation	(3)
Other real estate owned	10,777		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	3,212		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-15%(4)
Commercial real estate	9,480		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Agricultural and agricultural real estate	8,406		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,137		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,234		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-12%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments measured on a recurring basis, are summarized in the following table, in thousands:

	For the Three Months Ended March 31, 2018			For the Year Ended December 31, 2017
Balance at January 1,	$	1,738		$	2,790
Total gains (losses) included in earnings	17			(1,479		)
Issuances	492			1,875
Settlements	(288		)	(1,448		)
Balance at period end	$	1,959		$	1,738

Gains included in gains (losses) on sale of loans held for sale attributable to interest rate lock commitments held at March 31, 2018, and December 31, 2017, were $2.0 million and $1.7 million, respectively.

The tables below summarize the estimated fair value of Heartland's financial instruments as defined by ASC 825 as of March 31, 2018, and December 31, 2017, in thousands. The carrying amounts in the following tables are recorded in the consolidated balance sheets under the indicated captions. In accordance with ASC 825, the assets and liabilities that are not financial instruments are not included in the disclosure, such as the value of the commercial and mortgage servicing rights, premises, furniture and equipment, premises, furniture and equipment held for sale, OREO, goodwill, and other intangibles and other liabilities.

Heartland does not believe that the estimated information presented herein is representative of the earnings power or value of Heartland. The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of Heartland to create value through loan origination, deposit gathering

or fee generating activities. Many of the estimates presented herein are based upon the use of highly subjective information and assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.

					Fair Value Measurements at March 31, 2018
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	266,346	$	266,346	$	266,346	$	—	$	—
Time deposits in other financial institutions	6,297		6,297		6,297		—		—
Securities:
Available for sale	2,027,665		2,027,665		9,421		2,018,244		—
Held to maturity	249,766		258,638		—		258,638		—
Other investments	22,982		22,982		—		22,982		—
Loans held for sale	24,376		24,376		—		24,376		—
Loans, net:
Commercial	1,786,838		1,766,760		—		1,763,837		2,923
Commercial real estate	3,298,798		3,280,785		—		3,272,469		8,316
Agricultural and agricultural real estate	514,471		508,582		—		500,541		8,041
Residential real estate	621,295		614,234		—		612,813		1,421
Consumer	465,957		464,793		—		463,072		1,721
Total Loans, net	6,687,359		6,635,154		—		6,612,732		22,422
Cash surrender value on life insurance	143,444		143,444		—		143,444		—
Derivative financial instruments(1)	6,265		6,265		—		6,265		—
Interest rate lock commitments	1,959		1,959		—		—		1,959
Forward commitments	283		283		—		283		—
Financial liabilities:
Deposits
Demand deposits	3,094,457		3,094,457		—		3,094,457		—
Savings deposits	4,536,106		4,536,106		—		4,536,106		—
Time deposits	910,977		910,977		—		910,977		—
Short term borrowings	131,240		131,240		—		131,240		—
Other borrowings	276,118		276,193		—		276,193		—
Derivative financial instruments(2)	4,709		4,709		—		4,709		—
Forward commitments	320		320		—		320		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

					Fair Value Measurements at December 31, 2017
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	196,003	$	196,003	$	196,003	$	—	$	—
Time deposits in other financial institutions	9,820		9,820		9,820		—		—
Securities:
Available for sale	2,216,753		2,216,753		3,484		2,213,269		—
Held to maturity	253,550		265,494		—		265,494		—
Other investments	22,563		22,563		—		22,563		—
Loans held for sale	44,560		44,560		—		44,560		—
Loans, net:
Commercial	1,628,043		1,617,956		—		1,614,744		3,212
Commercial real estate	3,140,427		3,132,542		—		3,123,062		9,480
Agricultural and agricultural real estate	508,075		508,987		—		500,581		8,406
Residential real estate	620,939		614,667		—		613,530		1,137
Consumer	438,294		440,820		—		439,586		1,234
Total Loans, net	6,335,778		6,314,972		—		6,291,503		23,469
Cash surrender value on life insurance	142,818		142,818		—		142,818		—
Derivative financial instruments(1)	3,933		3,933		—		3,933		—
Interest rate lock commitments	1,738		1,738		—		—		1,738
Forward commitments	80		80		—		80		—
Financial liabilities:
Deposits
Demand deposits	2,983,128		2,983,128		—		2,983,128		—
Savings deposits	4,240,328		4,240,328		—		4,240,328		—
Time deposits	923,453		923,453		—		923,453		—
Short term borrowings	324,691		324,691		—		324,691		—
Other borrowings	285,011		285,609		—		285,609		—
Derivative financial instruments(2)	5,167		5,167		—		5,167		—
Forward commitments	232		232		—		232		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

Cash and Cash Equivalents — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.

Time Deposits in Other Financial Institutions — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.

Securities —For securities either held to maturity, available for sale or trading, fair value equals quoted market price if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. For Level 3 securities, Heartland utilizes independent pricing provided by third party vendors or brokers.

Other Investments — Fair value measurement of other investments, which consists primarily of FHLB stock, are based on their redeemable value, which is at cost due to the restrictions placed on their transferability. The market for these securities is restricted to the issuer of the stock and subject to impairment evaluation.

Loans — Beginning in the first quarter of 2018, the fair value of loans were determined using an exit price methodology as prescribed by ASU 2016-01, which was effective on January 1, 2018. The exit price estimation of fair value is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and a discount rate based on the relative risk of the cash flows. Other considerations include the loan type, remaining life of the loan and credit risk. In comparison, loan fair values as of December 31, 2017, were estimated based on an entrance price methodology, which discounts future cash flows using the current rates at which a similar loan would be made to borrowers with similar credit ratings and for the same remaining maturities. The fair value of non-impaired loans as of March 31, 2018, and December 31, 2017, are not comparable.

The fair value of impaired loans is measured using the fair value of the underlying collateral. The fair value of loans held for sale is estimated using quoted market prices.

Interest Rate Lock Commitments — The fair value of interest rate lock commitments is estimated using an internal valuation model, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated closing ratio based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment group.

Forward Commitments — The fair value of these instruments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments.

Derivative Financial Instruments — The fair value of all derivatives is estimated based on the amount that Heartland would pay or would be paid to terminate the contract or agreement, using current rates and prices, and, when appropriate, the current creditworthiness of the counter-party.

Deposits — The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value.

Short-term and Other Borrowings—Rates currently available to Heartland for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.

Commitments to Extend Credit, Unused Lines of Credit and Standby Letters of Credit — Based upon management's analysis of the off balance sheet financial instruments, there are no significant unrealized gains or losses associated with these financial instruments based upon review of the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties.

NOTE 9: REVENUE

On January 1, 2018, Heartland adopted ASU 2014-09, "Revenue from Contracts with Customers" (Topic 606), and all subsequent ASUs that modified Topic 606. As stated in Note 1, the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with Topic 605.

Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with loan servicing income, bank owned life insurance, derivatives and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as service charges and fees, trust fees, and brokerage and insurance commissions. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of Heartland's revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below.

Service Charges and Fees

Service charges and fees consist of revenue generated from deposit account related service charges and fees, overdraft fees, customer service fees, credit card fee income, debit card income and other service charges and fees.

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders and other deposit account related fees. Heartland's performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees, including overdraft fees, are largely transactional based, and therefore, the performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts.

Customer service fees and other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. Heartland's performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month.

Credit card fee income and debit card income are comprised of interchange fees, ATM fees, and merchant services income. Credit card fee income and debit card income are earned whenever the banks' debit and credit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a bank cardholder uses an ATM that is not owned by one of Heartland's banks or a non-bank cardholder uses Heartland-owned ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees.

Trust Fees

Trust fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. Heartland's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the average daily market value or month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days before or after month end through a direct charge to customers’ accounts. Heartland does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. Heartland's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered.

Brokerage and Insurance Commissions

Brokerage commission primarily consist of commissions related to broker-dealer contracts. The contracts are between the customer and the broker-dealer, and Heartland satisfies its performance obligation and earns commission when the transactions are completed. The recognition of revenue is based on a defined fee schedule and does not require significant judgment. Payment is received shortly after services are rendered. Insurance commissions are related to commissions received directly from the insurance carrier. Heartland acts as an insurance agent between the customer and the insurance carrier. Heartland's performance obligations and associated fee and commission income are defined with each insurance product with the insurance company. When insurance payments are received from customers, a portion of the payment is recognized as commission revenue.

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017
In-scope of Topic 606
Service charges and fees
Service charges and fees on deposit accounts	$	2,618		$	2,160
Overdraft fees	2,208			2,193
Customer service fees	77			49
Credit card fee income	2,190			2,033
Debit card income	2,985			3,021
Other service charges	1			1
Total service charges and fees	10,079			9,457
Trust fees	4,680			3,631
Brokerage and insurance commissions	907			1,036
Total noninterest income in-scope of Topic 606	15,666			14,124
Out-of-scope of Topic 606
Loan servicing income	1,754			1,724
Securities gains, net	1,441			2,482
Unrealized loss on equity securities, net	(28		)	—
Net gains on sale of loans held for sale	4,051			6,147
Valuation adjustment on commercial servicing rights	(2		)	5
Income on bank owned life insurance	614			617
Other noninterest income	1,220			794
Total noninterest income out-of-scope of Topic 606	9,050			11,769
Total noninterest income	$	24,716		$	25,893

Contract Balances

A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. Heartland's noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after Heartland satisfies its performance obligation and revenue is recognized. Heartland does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018, and December 31, 2017, Heartland did not have any significant contract balances.

Contract Acquisition Costs

In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). Heartland utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, Heartland did not capitalize any contract acquisition costs.

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

SAFE HARBOR STATEMENT

This Quarterly Report on Form 10-Q (including any information incorporated herein by reference) contains, and future oral and written statements of Heartland Financial USA, Inc. ("Heartland") and its management may contain, forward-looking statements within the meaning of such term in the Private Securities Litigation Reform Act of 1995, with respect to the business, financial condition, results of operations, plans, objectives and future performance of Heartland. Forward-looking statements, which may be based upon beliefs, expectations and assumptions of Heartland's management and on information currently available to management, are generally identifiable by the use of words such as "believe," "expect," "anticipate," "plan," "intend," "estimate," "may," "will," "would," "could," "should" or other similar expressions. Although Heartland has made these statements based on management's experience and best estimate of future events, there may be events or factors that management has not anticipated, and the accuracy and achievement of such forward-looking statements and estimates are subject to a number of risks, including those identified in our Annual Report on Form 10-K for the year ended December 31, 2017. Additionally, all statements in this document, including forward-looking statements, speak only as of the date they are made, and Heartland undertakes no obligation to update any statement in light of new information or future events.

CRITICAL ACCOUNTING POLICIES

The preparation of financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, income and expenses. These estimates are based upon historical experience and on various other assumptions that management believes are reasonable under the circumstances. Among other things, the estimates form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The estimates and judgments that management believes have the most effect on Heartland's reported financial position and results of operations are described as critical accounting policies in Heartland's Annual Report on Form 10-K for the year ended December 31, 2017. There have been no significant changes in the critical accounting policies or the assumptions and judgments utilized in applying these policies since December 31, 2017.

OVERVIEW

Heartland is a multi-bank holding company providing banking, mortgage, wealth management, investments, insurance and consumer finance services to individuals and businesses. As of the date of this Quarterly Report on Form 10-Q, Heartland has ten banking subsidiaries with 117 locations in Iowa, Illinois, Wisconsin, New Mexico, Arizona, Montana, Colorado, Minnesota, Kansas, Missouri, Texas and California. Heartland's primary objectives are to increase profitability and diversify its market area and asset base by expanding through acquisitions and to grow organically by increasing its customer base in the markets it serves.

Heartland's results of operations depend primarily on net interest income, which is the difference between interest income from interest earning assets and interest expense on interest bearing liabilities. Noninterest income, which includes service charges and fees, loan servicing income, trust income, brokerage and insurance commissions, securities gains, net gains on sale of loans held for sale, and income on bank owned life insurance also affects Heartland's results of operations. Heartland's principal operating expenses, aside from interest expense, consist of the provision for loan losses, salaries and employee benefits, occupancy and equipment costs, professional fees, Federal Deposit Insurance Corporation ("FDIC") insurance premiums, advertising, core deposit intangibles and customer relationship intangibles amortization and other real estate and loan collection expenses.

Net income available to common stockholders for the quarter ended March 31, 2018, was $23.3 million, or $0.76 per diluted common share, compared to $18.0 million, or $0.68 per diluted common share, for the quarter ended March 31, 2017. Return on average common equity was 9.32% and return on average assets was 0.97% for the first quarter of 2018, compared to 9.71% and 0.89%, respectively, for the same quarter in 2017.

For the first quarter of 2018, Heartland's net interest margin was 4.19% (4.26% on a fully tax-equivalent basis) compared to 3.95% (4.16% on a fully tax-equivalent basis) for the same quarter in 2017, and the efficiency ratio was 68.21% and 69.95% for the first quarter of 2018 and 2017, respectively.

On February 23, 2018, Heartland completed the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, based in Minnetonka, Minnesota. Based on Heartland's closing common stock price of $53.55 per share as of February 23, 2018, the aggregate consideration was $61.4 million, with approximately 10% of the consideration paid in cash and 90% paid by delivery of Heartland common stock. Simultaneous with the closing of the transaction, Signature Bank merged into Heartland's Minnesota Bank & Trust subsidiary. As of the close date, Signature Bank had, at fair value, total assets of $426.5 million, total loans of $324.5 million and total deposits of $357.3 million. The systems conversion for this transaction occurred on April 20, 2018.

In the first quarter of 2018, Heartland recorded $2.6 million of restructuring expenses related to its retail mortgage lending operation. The restructuring projects are primarily related to outsourcing of the loan application processing, underwriting and loan closing functions. These changes will improve the customer experience, streamline operations and reduce the volatility and cost of

originating mortgage loans. The new operating model will reduce the number of days between the customer application and the loan closing, as well as reduce and fix the cost of processing each loan. The restructuring is expected to be substantially completed by the end of the second quarter of 2018. Heartland expects to realize cost savings of more than $1.0 million per quarter, primarily related to the workforce reduction of approximately 100 employees, the discontinued use of several current systems and other overhead costs. Because of the significant reduction in infrastructure and the reporting structure of the mortgage sales staff, who currently report directly to the bank president in each market, retail mortgage lending is no longer considered a separate business segment as of January 1, 2018.

On December 12, 2017, Heartland entered into a definitive merger agreement with First Bank Lubbock Bancshares, Inc., parent company of FirstBank & Trust Company, headquartered in Lubbock, Texas. Under the terms of the definitive merger agreement, Heartland will acquire First Bank Lubbock Bancshares, Inc. in a transaction valued at approximately $185.6 million as of the announcement date, subject to certain adjustments. Shareholders of First Bank Lubbock Bancshares, Inc. will receive a combination of Heartland common stock and cash. As of March 31, 2018, FirstBank & Trust Company had total assets of $971.5 million, including $704.9 million of gross loans held to maturity, and deposits of $869.3 million. Upon closing of the transaction, FirstBank & Trust Company will become a wholly-owned subsidiary of Heartland and will continue to operate under its current name and management team as Heartland's eleventh state-chartered bank. Heartland has received approval by the bank regulatory authorities related to this acquisition. The transaction is expected to close in the second quarter of 2018, and the systems conversion is expected to occur in the third quarter of 2018.

Total assets of Heartland were $10.06 billion at March 31, 2018, an increase of $245.1 million or 2% since year-end 2017. Excluding $427.1 million of assets acquired at fair value in the Signature Bancshares, Inc. transaction, total assets decreased $181.9 million or 2% since December 31, 2017. The decrease in total assets was primarily due to a reduction in the securities portfolio, which represented 23% of total assets at March 31, 2018, and 25% of total assets at December 31, 2017.

Heartland's total assets exceeded $10.0 billion as of March 31, 2018. Under the Dodd-Frank Act and other regulatory guidance, Heartland will become subject to increased supervision and regulation, which include the establishment of a risk committee, annual stress testing and restriction on interchange revenue. Management has been in the process of preparing for these new requirements over the past several quarters, including additions to staff, enhancing risk management processes and investing to upgrade information systems and technology. The risk factors and supervision requirements that management believes have the most effect on Heartland's reported financial position and results of operations are described in Heartland's Annual Report on Form 10-K for the year ended December 31, 2017.

Total loans held to maturity were $6.75 billion at March 31, 2018, compared to $6.39 billion at year-end 2017, an increase of $354.6 million. This change includes $324.5 million of total loans held to maturity acquired at fair value in the Signature Bancshares, Inc. transaction. Exclusive of this transaction, total loans held to maturity increased $30.1 million or less than 1% since December 31, 2017.

Total deposits were $8.54 billion as of March 31, 2018, compared to $8.15 billion at year-end 2017, an increase of $394.6 million or 5%. This increase includes $357.3 million of deposits, at fair value, acquired in the Signature Bancshares, Inc. transaction. Exclusive of this transaction, total deposits increased $37.3 million or less than 1% since December 31, 2017.

Common stockholders' equity was $1.05 billion at March 31, 2018, compared to $990.5 million at year-end 2017. Book value per common share was $33.81 at March 31, 2018, compared to $33.07 at year-end 2017. Heartland's unrealized loss on securities available for sale, net of applicable taxes, was $40.5 million at March 31, 2018, compared to an unrealized loss of $24.3 million, net of applicable taxes, at December 31, 2017.

FINANCIAL HIGHLIGHTS

(Dollars in thousands, except per share data)	Three Months Ended March 31,
	2018			2017
STATEMENT OF INCOME DATA
Interest income	$	101,214		$	80,551
Interest expense	9,630			7,523
Net interest income	91,584			73,028
Provision for loan losses	4,263			3,641
Net interest income after provision for loan losses	87,321			69,387
Noninterest income	24,716			25,893
Noninterest expenses	83,646			71,740
Income taxes	5,123			5,530
Net income	23,268			18,010
Preferred dividends	(13		)	(19		)
Interest expense on convertible preferred debt	—			5
Net income available to common stockholders	$	23,255		$	17,996
Key Performance Ratios
Annualized return on average assets	0.97		%	0.89		%
Annualized return on average common equity (GAAP)	9.32		%	9.71		%
Annualized return on average tangible common equity (non-GAAP)(1)	13.03		%	12.25		%
Annualized ratio of net charge-offs to average loans	0.08		%	0.22		%
Annualized net interest margin (GAAP)	4.19		%	3.95		%
Annualized net interest margin, fully tax-equivalent (non-GAAP)(2)	4.26		%	4.16		%
Efficiency ratio, fully tax-equivalent(3)	68.21		%	69.95		%
Reconciliation of Return on Average Tangible Common Equity (non-GAAP)(4)
Net income available to common shareholders (GAAP)	$	23,255		$	17,996
Average common stockholders' equity (GAAP)	$	1,011,580		$	751,671
Less average goodwill	250,172			132,440
Less average other intangibles, net	37,510			23,225
Average tangible common equity (non-GAAP)	$	723,898		$	596,006
Annualized return on average common equity (GAAP)	9.32		%	9.71		%
Annualized return on average tangible common equity (non-GAAP)	13.03		%	12.25		%
Reconciliation of Annualized Net Interest Margin, Fully Tax-Equivalent (non-GAAP)(5)
Net Interest Income (GAAP)	$	91,584		$	73,028
Plus tax-equivalent adjustment(6)	1,544			3,860
Net interest income - tax-equivalent (non-GAAP)	$	93,128		$	76,888
Average earning assets	$	8,857,801		$	7,502,496
Net interest margin (GAAP)	4.19		%	3.95		%
Net interest margin, fully tax-equivalent (non-GAAP)	4.26		%	4.16		%
Reconciliation of Non-GAAP Measure-Efficiency Ratio(7)
Net Interest Income (GAAP)	$	91,584		$	73,028
Plus tax-equivalent adjustment(6)	1,544			3,860
Net interest income - tax-equivalent (non-GAAP)	93,128			76,888
Noninterest income	24,716			25,893
Securities gains, net	(1,441		)	(2,482		)
Unrealized loss on equity securities, net	28			—
Adjusted income	$	116,431		$	100,299

(Dollars in thousands, except per share data)	Three Months Ended March 31,
	2018			2017
Total noninterest expenses	$	83,646		$	71,740
Less:
Core deposit intangibles and customer relationship intangibles amortization	1,863			1,171
(Gain)/loss on sales/valuations of assets, net	(197		)	412
Restructuring expenses	2,564			—
Adjusted noninterest expenses	$	79,416		$	70,157
Efficiency ratio, fully tax-equivalent (non-GAAP)	68.21		%	69.95		%
(1) Refer to the "Reconciliation of Return on Average Tangible Common Equity (non-GAAP)" table.
(2) Refer to the "Reconciliation of Annualized Net Interest Margin, Fully Tax-Equivalent (non-GAAP)" table.
(3) Refer to the "Reconciliation of Non-GAAP Measure-Efficiency Ratio" (non-GAAP)" table.
(4) Return on average tangible common equity is net income available to common stockholders divided by average common stockholders' equity less goodwill and core deposit intangibles and customer relationship intangibles, net. This financial measure is included as it is considered to be a critical metric to analyze and evaluate the financial condition and capital strength of Heartland. This measure should not be considered a substitute for operating results determined in accordance with GAAP.
(5) Annualized net interest margin, fully tax-equivalent is a non-GAAP measure, which adjusts net interest income for the tax-favored status of certain loans and securities. Management believes this measure enhances the comparability of net interest income arising from taxable and tax-exempt sources. This measure should not be considered a substitute for operating results determined in accordance with GAAP.
(6) Computed on a tax-equivalent basis using an effective tax rate of 21% for the quarter ended March 31, 2018, and 35% for the quarter ended March 31, 2017.
(7) Efficiency ratio, fully tax-equivalent, expresses noninterest expenses as a percentage of fully tax-equivalent net interest income and noninterest income. This efficiency ratio is presented on a tax-equivalent basis, which adjusts net interest income and noninterest expenses for the tax favored status of certain loans, securities and tax credit projects. Management believes the presentation of this non-GAAP measure provides supplemental useful information for proper understanding of the financial results of Heartland as it enhances the comparability of income and expenses arising from taxable and nontaxable sources and excludes specific items, as noted in the table. This measure should not be considered a substitute for operating results determined in accordance with GAAP.

FINANCIAL HIGHLIGHTS, continued

(Dollars in thousands, except per share data)	As Of and For the Quarter Ended
	3/31/2018			12/31/2017			9/30/2017			6/30/2017			3/31/2017
BALANCE SHEET DATA
Investments	$	2,300,413		$	2,492,866		$	2,372,916		$	2,070,121		$	2,175,701
Loans held for sale	24,376			44,560			35,795			48,848			49,009
Total loans receivable(1)	6,746,015			6,391,464			6,373,415			5,325,082			5,361,604
Allowance for loan losses	58,656			55,686			54,885			54,051			54,999
Total assets	10,055,863			9,810,739			9,755,627			8,204,721			8,361,845
Total deposits	8,541,540			8,146,909			8,231,884			6,930,169			7,089,861
Long-term obligations	276,118			285,011			301,473			281,096			282,051
Preferred equity	938			938			938			938			938
Common stockholders’ equity	1,050,567			990,519			980,746			805,032			780,374
Common Share Data
Book value per common share (GAAP)	$	33.81		$	33.07		$	32.75		$	30.15		$	29.26
Tangible book value per common share (non-GAAP)(2)	$	23.79		$	23.99		$	23.61		$	24.00		$	23.05
Common shares outstanding, net of treasury stock	31,068,239			29,953,356			29,946,069			26,701,226			26,674,121
Tangible common equity ratio (non-GAAP)(3)	7.59		%	7.53		%	7.46		%	7.97		%	7.50		%
Reconciliation of Tangible Book Value Per Common Share (non-GAAP)(4)
Common stockholders' equity (GAAP)	$	1,050,567		$	990,518		$	980,746		$	805,032		$	780,374
Less goodwill	270,305			236,615			236,615			141,461			141,461
Less core deposit intangibles and customer relationship intangibles, net	41,063			35,203			37,028			22,850			24,068
Tangible common stockholders' equity (non-GAAP)	$	739,199		$	718,700		$	707,103		$	640,721		$	614,845
Common shares outstanding, net of treasury stock	31,068,239			29,953,356			29,946,069			26,701,226			26,674,121
Common stockholders' equity (book value) per share (GAAP)	$	33.81		$	33.07		$	32.75		$	30.15		$	29.26
Tangible book value per common share (non-GAAP)	$	23.79		$	23.99		$	23.61		$	24.00		$	23.05
Reconciliation of Tangible Common Equity Ratio (non-GAAP)(5)
Total assets (GAAP)	$	10,055,863		$	9,810,739		$	9,755,627		$	8,204,721		$	8,361,845
Less goodwill	270,305			236,615			236,615			141,461			141,461
Less core deposit intangibles and customer relationship intangibles, net	41,063			35,203			37,028			22,850			24,068
Total tangible assets (non-GAAP)	$	9,744,495		$	9,538,921		$	9,481,984		$	8,040,410		$	8,196,316
Tangible common equity ratio (non-GAAP)	7.59		%	7.53		%	7.46		%	7.97		%	7.50		%
(1) Excludes loans held for sale.
(2) Refer to the "Reconciliation of Tangible Book Value Per Common Share (non-GAAP)" table.
(3) Refer to the "Reconciliation of Tangible Common Equity Ratio (non-GAAP)" table.
(4) Tangible book value per common share is total common stockholders' equity less goodwill and core deposit and customer relationship intangibles, net, divided by common shares outstanding, net of treasury. This amount is a non-GAAP financial measure but has been included as it is considered to be a critical metric with which to analyze and evaluate the financial condition and capital strength of Heartland. This measure should not be considered a substitute for operating results determined in accordance with GAAP.
(5) The tangible common equity ratio is total common stockholders' equity less goodwill and core deposit intangibles, net divided by total assets less goodwill and core deposit intangibles, net. This ratio is a non-GAAP financial measure but has been included as it is considered to be a critical metric with which to analyze and evaluate the financial condition and capital strength of Heartland. This measure should not be considered a substitute for operating results determined in accordance with GAAP.

RESULTS OF OPERATIONS

Net Interest Income

Net interest margin, expressed as a percentage of average earning assets, was 4.19% (4.26% on a fully tax-equivalent basis) during the first quarter of 2018, compared to 3.95% (4.16% on a fully tax-equivalent basis) during the first quarter of 2017. Heartland's success in maintaining net interest margin has been the result of improved yield on earning assets and continuous loan and deposit pricing discipline. Also contributing to Heartland's ability to maintain its net interest margin has been the amortization of purchase accounting discounts associated with acquisitions completed by Heartland. See "Analysis of Average Balances, Tax-Equivalent Yields and Rates" for a description of our use of net interest income on a fully tax-equivalent basis, which is not defined by GAAP, and a reconciliation of annualized net interest margin on a fully tax-equivalent basis to GAAP.

Interest income for the first quarter of 2018 was $101.2 million, an increase of $20.7 million or 26%, compared to $80.6 million recorded in the first quarter of 2017. The tax-equivalent adjustments for income taxes saved on the interest earned on nontaxable securities and loans were $1.5 million for the first quarter of 2018 and $3.9 million for the first quarter of 2017. With these adjustments, interest income on a tax-equivalent basis was $102.8 million for the first quarter of 2018, an increase of $18.3 million or 22%, compared to $84.4 million for the first quarter of 2017. The increase in interest income on a tax-equivalent basis and average earning assets is primarily attributable to the acquisitions completed in 2017. Average earning assets acquired in the Signature Bancshares, Inc. transaction totaled $148.9 million. Exclusive of this transaction, average earning assets increased $1.21 billion or 16% from the first quarter of 2017. The average rate on earning assets increased 14 basis points to 4.70% for the first quarter of 2018 compared to 4.56% for the same quarter in 2017.

Interest expense for the first quarter of 2018 was $9.6 million, an increase of $2.1 million or 28% from $7.5 million in the first quarter of 2017. Average interest bearing deposits increased $595.3 million or 13% to $5.27 billion for the quarter ended March 31, 2018, from $4.67 billion in the same quarter in 2017. Average interest bearing deposits acquired with the Signature Bancshares Inc. transaction totaled $100.7 million. Exclusive of this transaction, average interest bearing deposits increased $494.6 million or 11%. The average interest rate paid on Heartland's interest bearing deposits increased 12 basis points to 0.44% for the first quarter of 2018 compared to 0.32% for the same quarter in 2017. Average borrowings declined $91.9 million or 18% to $427.9 million during the first quarter of 2018 from $519.8 million during the same quarter in 2017. The average interest rate paid on Heartland's borrowings was 3.66% for the first quarter of 2018 compared to 2.96% in the first quarter of 2017. The increase in the average interest rate paid on Heartland's interest bearing liabilities is primarily due to recent increases in market interest rates.

Net interest income increased $18.6 million or 25% to $91.6 million in the first quarter of 2018 from $73.0 million in the first quarter of 2017. After the tax-equivalent adjustment discussed above, net interest income on a tax-equivalent basis totaled $93.1 million during the first quarter of 2018, an increase of $16.2 million or 21% from $76.9 million during the first quarter of 2017.

Heartland attempts to manage its balance sheet to minimize the effect that a change in interest rates has on its net interest margin. Heartland plans to continue to work toward improving both its earning assets and funding mix through targeted organic growth strategies, which management believes will result in additional net interest income. Heartland produces and reviews simulations of various interest rate scenarios to assist in monitoring its exposure to interest rate risk. Based on these simulations, it is management's opinion that Heartland maintains a well-balanced and manageable interest rate posture. Approximately 28% of Heartland's commercial and agricultural loan portfolios consist of floating rate loans that reprice based upon changes in the national prime or LIBOR interest rate, and approximately 5% of these floating rate loans have interest rate floors that are currently in effect. Item 3 of Part I of this Quarterly Report on Form 10-Q contains additional information about the results of Heartland's most recent net interest income simulations. Note 7 to the consolidated financial statements included in this Quarterly Report on Form 10-Q contains a detailed discussion of the derivative instruments Heartland has utilized to manage its interest rate risk.

The following table sets forth certain information relating to Heartland's average consolidated balance sheets and reflects the yield on average earning assets and the cost of average interest bearing liabilities for the periods indicated, in thousands. Such yields and costs are calculated by dividing income or expense by the average balance of assets or liabilities. Average balances are derived from daily balances, and nonaccrual loans and loans held for sale are included in each respective loan category. Assets that receive favorable tax treatment are evaluated on a tax-equivalent basis assuming a federal income tax rate of 21% for the first quarter of 2018 and 35% for the first quarter of 2017. Tax-favored assets generally have lower contractual pre-tax yields than fully taxable assets. A tax-equivalent yield is calculated by adding the tax savings to the interest earned on tax favored assets and dividing this amount by the average balance of the tax favorable assets.

ANALYSIS OF AVERAGE BALANCES, TAX-EQUIVALENT YIELDS AND RATES(1) (Dollars in thousands)
	For the Three Months Ended
	March 31, 2018								March 31, 2017
	Average Balance			Interest			Rate		Average Balance			Interest			Rate
Earning Assets
Securities:
Taxable	$	1,827,611		$	11,577		2.57	%	$	1,449,054		$	8,253		2.31	%
Nontaxable(1)	448,641			4,530			4.09		645,534			7,986			5.02
Total securities	2,276,252			16,107			2.87		2,094,588			16,239			3.14
Interest bearing deposits with the Federal Reserve Bank and other banks and other short-term investments	112,024			407			1.47		96,270			209			0.88
Federal funds sold	—			—			—		314			—			—
Loans:(2)
Commercial and commercial real estate(1)	4,910,797			62,813			5.19		3,813,258			45,913			4.88
Residential mortgage	642,181			6,851			4.33		646,532			6,683			4.19
Agricultural and agricultural real estate(1)	513,780			6,004			4.74		483,079			5,554			4.66
Consumer	458,795			8,660			7.66		422,785			8,053			7.72
Fees on loans				1,916			—					1,760			—
Less: allowance for loan losses	(56,028		)	—			—		(54,330		)	—			—
Net loans	6,469,525			86,244			5.41		5,311,324			67,963			5.19
Total earning assets	8,857,801			102,758			4.70	%	7,502,496			84,411			4.56	%
Nonearning Assets	902,135								731,014
Total Assets	$	9,759,936							$	8,233,510
Interest Bearing Liabilities
Savings	$	4,358,508		$	3,791		0.35	%	$	3,838,001		$	2,105		0.22	%
Time, $100,000 and over	377,443			776			0.83		348,782			725			0.84
Other time deposits	530,485			1,199			0.92		484,336			900			0.75
Short-term borrowings	147,738			268			0.74		235,432			137			0.24
Other borrowings	280,163			3,596			5.21		284,404			3,656			5.21
Total interest bearing liabilities	5,694,337			9,630			0.69	%	5,190,955			7,523			0.59	%
Noninterest Bearing Liabilities
Noninterest bearing deposits	2,984,704								2,225,702
Accrued interest and other liabilities	68,377								63,895
Total noninterest bearing liabilities	3,053,081								2,289,597
Stockholders' Equity	1,012,518								752,958
Total Liabilities and Stockholders' Equity	$	9,759,936							$	8,233,510
Net interest income, fully tax-equivalent (non-GAAP)(1)				$	93,128							$	76,888
Net interest spread(1)							4.01	%							3.97	%
Net interest income, fully tax-equivalent (non-GAAP) to total earning assets(3)							4.26	%							4.16	%
Interest bearing liabilities to earning assets	64.29		%						69.19		%
Reconciliation of Annualized Net Interest Margin, Fully Tax-Equivalent (non-GAAP)(3)
Net interest income, fully tax-equivalent (non-GAAP)				$	93,128							$	76,888
Adjustments for tax-equivalent interest(1)				(1,544		)						(3,860		)
Net interest income (GAAP)				$	91,584							$	73,028
Average Earning Assets	$	8,857,801							$	7,502,496
Annualized net interest margin (GAAP)							4.19	%							3.95	%
Annualized net interest margin, fully tax-equivalent (non-GAAP)							4.26	%							4.16	%
(1) Computed on a tax-equivalent basis using an effective tax rate of 21% for the quarter ended March 31, 2018, and 35% for the quarter ended March 31, 2017.
(2) Nonaccrual loans are included in the average loans outstanding.
(3) Annualized net interest margin, fully tax-equivalent is a non-GAAP measure, which adjusts net interest income for the tax-favored status of certain loans and securities. Management believes this measure enhances the comparability of net interest income arising from taxable and tax-exempt sources. This measure should not be considered a substitute for operating results determined in accordance with GAAP.

Provision For Loan Losses

The allowance for loan losses is established through provision expense to provide, in Heartland management's opinion, an appropriate allowance for loan losses. The provision for loan losses was $4.3 million for the first quarter of 2018 compared to $3.6 million for the first quarter of 2017. In determining that the allowance for loan losses is appropriate, management uses factors that include the overall composition of the loan portfolio, general economic conditions, types of loans, loan collateral values, past loss experience, loan delinquencies, substandard credits, and doubtful credits.

Given the size of Heartland's loan portfolio, the level of organic loan growth, acquired loans that move out of the purchase accounting pool, changes in credit quality and the variability that can occur in the factors considered when determining the appropriateness of the allowance for loan losses, Heartland's provision for loan losses will vary from quarter to quarter. For additional details on the specific factors considered in establishing the allowance for loan losses, refer to the discussion of critical accounting policies set forth in Management's Discussion and Analysis of Financial Condition and Results of Operations contained in Heartland's Annual Report on Form 10-K for the year ended December 31, 2017, and the information under the caption "Allowance For Loan Losses" in Item 2 of this Quarterly Report on Form 10-Q and Note 5 to the consolidated financial statements included herein.

Heartland believes the allowance for loan losses as of March 31, 2018, was at a level commensurate with the overall risk exposure of the loan portfolio. However, if economic conditions should deteriorate, certain borrowers may experience difficulty and the level of nonperforming loans, charge-offs and delinquencies could rise and require further increases in the provision for loan losses.

Noninterest Income

The tables below show Heartland's noninterest income for the three-month periods ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017		Change			% Change
Service charges and fees	$	10,079		$	9,457	$	622		7	%
Loan servicing income	1,754			1,724		30			2
Trust fees	4,680			3,631		1,049			29
Brokerage and insurance commissions	907			1,036		(129		)	(12	)
Securities gains, net	1,441			2,482		(1,041		)	(42	)
Unrealized loss on equity securities, net	(28		)	—		(28		)	100
Net gains on sale of loans held for sale	4,051			6,147		(2,096		)	(34	)
Valuation adjustment on commercial servicing rights	(2		)	5		(7		)	(140	)
Income on bank owned life insurance	614			617		(3		)	—
Other noninterest income	1,220			794		426			54
Total noninterest income	$	24,716		$	25,893	$	(1,177	)	(5	)%

Noninterest income totaled $24.7 million during the first quarter of 2018 compared to $25.9 million during the first quarter of 2017, a decrease of $1.2 million or 5%. Decreases in noninterest income for the quarter ended March 31, 2018, reflected lower securities gains, net, and net gains on sale of loans held for sale, the effect of which was partially offset by increased service charges and fees and trust fees.

Service Charges and Fees

The following tables summarize the changes in service charges and fees for the three-month periods ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018		2017		Change			% Change
Service charges and fees on deposit accounts	$	2,618	$	2,160	$	458		21	%
Overdraft fees	2,208		2,193		15			1
Customer service fees	77		49		28			57
Credit card fee income	2,190		2,033		157			8
Debit card income	2,985		3,021		(36		)	(1	)
Other service charges	1		1		—			—
Total service charges and fees	$	10,079	$	9,457	$	622		7	%

Service charges and fees increased $622,000 or 7% to $10.1 million during the first quarter of 2018 compared to $9.5 million during the first quarter of 2017. Service charges and fees on deposit accounts increased $458,000 or 21% to $2.6 million for the first quarter of 2018 compared to $2.2 million for the first quarter of 2017. This increase was primarily attributable to a larger demand deposit customer base, a portion of which is attributable to the acquisitions completed in 2017 and the first quarter of 2018. Fees associated with credit card services were $2.2 million during the first quarter of 2018 compared to $2.0 million during the first quarter of 2017, an increase of $158,000 or 8%. This increase resulted primarily from efforts to increase the level of commercial credit card services provided at Heartland's subsidiary banks, including at the recently acquired banks. Heartland has focused on expanding its card payment solutions for businesses. In particular, Heartland has introduced an expense management service that provides business customers the ability to more efficiently manage their card-based spending.

Loan Servicing Income

The following tables show the changes in loan servicing income for the three-month periods ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017			Change			% Change
Commercial and agricultural loan servicing fees(1)	$	749		$	813		$	(64	)	(8	)%
Residential mortgage servicing fees	2,250			3,172			(922		)	(29	)
Mortgage servicing rights amortization	(1,245		)	(2,261		)	1,016			(45	)
Total loan servicing income	$	1,754		$	1,724		$	30		2	%
(1) Includes servicing fees for commercial, commercial real estate, agricultural and agricultural real estate loans.

Loan servicing income includes the fees collected for the servicing of commercial, agricultural, and mortgage loans, which are dependent upon the aggregate outstanding balances of these loans, rather than quarterly production and sale of these loans. Loan servicing income totaled $1.8 million during the first quarter of 2018 compared to $1.7 million during the first quarter of 2017, an increase of $30,000 or 2%. Heartland's residential mortgage loan servicing portfolio totaled $3.54 billion at March 31, 2018, compared to $4.34 billion at March 31, 2017, which was a decrease of $802.3 million or 18%. The decrease in the servicing portfolio was primarily related to the sale in the third quarter of 2017 of the GNMA servicing portfolio, which contained loans with an unpaid principal balance of approximately $773.9 million.

Net Gains on Sale of Loans Held for Sale

The following table shows the activity related to the net gains on sales of loans held for sale during the three-month periods ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017
Total residential mortgage loan applications	$	234,825		$	248,614
Residential mortgage loans originated	$	149,768		$	161,851
Residential mortgage loans sold	$	127,963		$	172,521
Net gains on sale of residential mortgage loans	$	4,054		$	5,947
Net gain/(loss) on sale of other commercial, agricultural and consumer loans(1)	$	(3	)	$	200
Percentage of residential mortgage loans originated for refinancing	39		%	36		%
(1) Includes net gains on sale of commercial loans and leases, commercial real estate loans, agricultural and agricultural real estate loans and consumer loans

Net gains on sale of loans held for sale totaled $4.1 million during the first quarter of 2018 compared to $6.1 million during the first quarter of 2017, a decrease of $2.1 million or 34%. These gains result primarily from the gain or loss on sales of mortgage loans into the secondary market, related fees and fair value marks on the associated derivatives. The percentage of residential mortgage loans that represented refinancings was 39% during the first quarter of 2018 compared to 36% in the first quarter of 2017.

Securities Gains, Net

Securities gains, net, totaled $1.4 million for the first quarter of 2018 compared to $2.5 million for the first quarter of 2017, which was a decrease of $1.0 million or 42%. Heartland's net unrealized loss on securities available for sale totaled $52.8 million at March 31, 2018, compared to $44.9 million at March 31, 2017.

Other Noninterest Income

Other noninterest income totaled $1.2 million for the first quarter of 2018 compared to $794,000 for the first quarter of 2017, an increase of $426,000 or 54%. Income from customer swaps totaled $374,000 during the first quarter of 2018 compared to $65,000 during the first quarter of 2017, which was an increase of $309,000. Heartland has had more commercial loan customers enter into interest rate swaps for protection from rising interest rates.

Noninterest Expenses

The tables below show Heartland's noninterest expenses for the three-month periods ended March 31, 2018 and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017		Change			% Change
Salaries and employee benefits	$	48,710		$	41,767	$	6,943		17	%
Occupancy	6,043			5,073		970			19
Furniture and equipment	2,749			2,501		248			10
Professional fees	8,459			8,309		150			2
FDIC insurance assessments	989			807		182			23
Advertising	1,940			2,424		(484		)	(20	)
Core deposit intangibles and customer relationship intangibles amortization	1,863			1,171		692			59
Other real estate and loan collection expenses	732			828		(96		)	(12	)
(Gain)/loss on sales/valuations of assets, net	(197		)	412		(609		)	(148	)
Restructuring expenses	2,564			—		2,564			100
Other noninterest expenses	9,794			8,448		1,346			16
Total noninterest expenses	$	83,646		$	71,740	$	11,906		17	%

For the first quarter of 2018, noninterest expenses totaled $83.6 million compared to $71.7 million during the first quarter of 2017, an increase of $11.9 million or 17%. The most significant increases were related to salaries and employee benefits and restructuring expenses associated with the change in the business model of the mortgage lending operation. The increases in occupancy, furniture and equipment, FDIC insurance assessments, core deposit intangibles and customer relationship intangibles amortization and other noninterest expenses were primarily related to the recent acquisitions. These increases were partially offset by decreases in advertising expenses and gain/loss on sales/valuations of assets, net.

Salaries and Employee Benefits

The largest component of noninterest expenses, salaries and employee benefits, increased $6.9 million or 17% during the first quarter of 2018 as compared to the same quarter in 2017. The increase is primarily attributable to the additional salaries and employee benefits for employees of banks acquired in 2018 and 2017. Heartland had total full-time equivalent employees of 2,022 on March 31, 2018, compared to 1,896 on March 31, 2017.

Advertising Expenses

Advertising expenses were $1.9 million during the first quarter of 2018 compared to $2.4 million during the first quarter of 2017, a decrease of $484,000 or 20%. This decrease was primarily due to the costs of a deposit campaign promotion recorded during the first quarter of 2017. Heartland did not run a similar campaign in 2018.

Gain/Loss on Sales/Valuations of Assets, Net

For the first quarter of 2018, gains on sales/valuations of assets, net totaled $197,000 compared to expenses of $412,000 for the same quarter in 2017, which is a decrease of $609,000 or 148%. The decrease in the first quarter of 2018 was primarily attributable to the gain from the sale of one bank office that was classified as held for sale.

Restructuring Expenses

In the first quarter 2018, Heartland recorded $2.6 million of restructuring expenses related to its mortgage lending operation. The restructuring projects are primarily related to outsourcing the loan application processing, underwriting and loan closing functions. The restructuring expenses consist of severance and retention costs related to the workforce reduction and contract buyouts associated with the discontinued use of several current systems.

Efficiency Ratio

One of Heartland's top priorities is to improve its efficiency ratio, on a fully tax-equivalent basis, by reducing it to 65% or less. During the first quarter of 2018, Heartland's efficiency ratio, on a fully tax-equivalent basis, was 68.21% in comparison with 69.95% during the first quarter of 2017. Heartland's efficiency ratio will vary from quarter to quarter as a result of merger and acquisition activities and also from the seasonality and related revenue and expense timing differences that are inherent in the residential mortgage business. After completion, the restructuring projects related to the mortgage lending operation should have a positive impact on the efficiency ratio.

Income Taxes

Heartland's effective tax rate was 18.04% for the first quarter of 2018 compared to 23.49% for the first quarter of 2017. Heartland's effective tax rate was affected by the passage of the Tax Cuts and Jobs Act in December 2017, which reduced the federal income tax rate from a maximum of 35% to 21%. Federal low-income housing tax credits totaling $307,000 reduced Heartland's income taxes during the first quarter of 2018 compared to $304,000 in the first quarter of 2017. The level of tax-exempt interest income which, as a percentage of pre-tax income, was 20.46% during the first quarter of 2018 compared to 30.46% during the first quarter of 2017.

Heartland's income taxes included a tax benefit of $611,000 and $888,000 for the first quarter of 2018 and 2017, respectively, resulting from the vesting of outstanding restricted stock unit awards. The majority of Heartland's restricted stock unit awards vest in the first quarter of each year.

FINANCIAL CONDITION

Total assets of Heartland were $10.06 billion at March 31, 2018, an increase of $245.1 million or 2% since year-end 2017. Excluding $427.1 million of assets acquired at fair value in the Signature Bancshares Inc., transaction total assets decreased $181.9 million or 2% since December 31, 2017. The decrease in assets was primarily due to a reduction in the securities portfolio, which represented 23% and 25% of total assets at March 31, 2018, and December 31, 2017, respectively.

Lending Activities

Heartland has certain lending policies and procedures in place that are designed to provide for an acceptable level of credit risk. The board of directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies, nonperforming loans and potential problem loans.

The commercial and commercial real estate loan portfolio includes a wide range of business loans, including lines of credit for working capital and operational purposes and term loans for the acquisition of equipment and real estate. Although most loans are made on a secured basis, loans may be made on an unsecured basis if warranted by the overall financial condition of the borrower. Terms of commercial business loans generally range from one to five years. Commercial loans are primarily made based on the identified cash flow of the borrower and secondarily on the underlying collateral provided by the borrower. The collateral that Heartland requires for most of these loans is based upon the discounted market value of the collateral. The primary repayment risks of commercial loans are that the cash flow of the borrowers may be unpredictable, and the collateral securing these loans may fluctuate in value. Heartland seeks to minimize these risks in a variety of ways. The underwriting analysis includes credit verification, analysis of global cash flows, appraisals and a review of the financial condition of the borrower. Personal guarantees are frequently required as a tertiary form of repayment. In addition, when underwriting loans for commercial real estate, careful consideration is given to the property's operating history, future operating projections, current and projected occupancy, location and physical condition. Heartland also utilizes government guaranteed lending through the U.S. Small Business Administration and the U.S. Department of Agriculture's Rural Development Business and Industry Program to assist customers with longer-term funding and to reduce risk.

Agricultural loans, many of which are secured by crops, machinery and real estate, are provided to finance capital improvements and farm operations as well as acquisitions of livestock and machinery. Agricultural loans present unique credit risks relating to adverse weather conditions, loss of livestock due to disease or other reasons, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural loans is dependent upon the profitable operation or management of the agricultural entity. In underwriting agricultural loans, lending personnel work closely with their customers to review budgets and cash flow projections for crop production for the ensuing year. These budgets and cash flow projections are monitored closely during the year and reviewed with the customers at least annually. Lending personnel also work closely with governmental agencies, including the Farm Service Agency, to help agricultural customers obtain credit enhancement products such as loan guarantees or interest assistance.

Heartland originates first-lien, adjustable-rate and fixed-rate, one-to-four-family residential real estate loans for the construction, purchase or refinancing of a single family residential property. These loans are principally collateralized by owner-occupied properties and are amortized over 10 to 30 years. Heartland typically sells longer-term, low-rate, residential mortgage loans in the secondary market with servicing rights retained. This practice allows Heartland to better manage interest rate risk and liquidity risk. The Heartland bank subsidiaries participate in lending programs sponsored by U.S. government agencies such as Veterans Administration and Federal Home Administration when justified by market conditions.

Consumer lending includes motor vehicle, home improvement, home equity and small personal credit lines. Consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than one-to-four-family residential mortgage loans. Consumer loan collections are dependent on the borrower's continuing financial stability, and are therefore more likely to be affected by adverse personal circumstances. Risk is reduced through underwriting criteria, which include credit verification, appraisals, a review of the borrower's financial condition, and personal cash flows. A security interest, with title insurance when necessary, is taken in the underlying real estate.

Total loans held to maturity were $6.75 billion at March 31, 2018, compared to $6.39 billion at year-end 2017, an increase of $354.6 million or 6%. This change includes $324.5 million of total loans held to maturity acquired at fair value in the Signature Bancshares, Inc. transaction. Exclusive of this transaction, total loans held to maturity increased $30.1 million or less than 1% since December 31, 2017. Price competition for quality loans remains intense, and Heartland remains committed to its pricing strategy, disciplined credit approach and emphasis on the client relationship.

The table below presents the composition of the loan portfolio as of March 31, 2018, and December 31, 2017, in thousands:

LOAN PORTFOLIO	March 31, 2018					December 31, 2017
	Amount			Percent		Amount			Percent
Loans receivable held to maturity:
Commercial	$	1,806,683		26.77	%	$	1,646,606		25.76	%
Commercial real estate	3,323,094			49.25		3,163,269			49.48
Agricultural and agricultural real estate	518,386			7.68		511,588			8.00
Residential mortgage	624,725			9.26		624,279			9.76
Consumer	474,929			7.04		447,484			7.00
Gross loans receivable held to maturity	6,747,817			100.00	%	6,393,226			100.00	%
Unearned discount	(1,620		)			(556		)
Deferred loan fees	(182		)			(1,206		)
Total net loans receivable held to maturity	6,746,015					6,391,464
Allowance for loan losses	(58,656		)			(55,686		)
Loans receivable, net	$	6,687,359				$	6,335,778

Loans secured by real estate, either fully or partially, totaled $4.41 billion or 67% of gross loans at March 31, 2018. Exclusive of purchase accounting valuations and the loans acquired in the first quarter of 2018, 49% of the properties securing non-farm, nonresidential real estate loans are owner occupied. The largest categories of Heartland's loans secured by real estate at March 31, 2018, and December 31, 2017, are listed below, in thousands:

LOANS SECURED BY REAL ESTATE
	March 31, 2018			December 31, 2017
Residential real estate, excluding residential construction and residential lot loans	$	1,050,029		$	1,080,066
Industrial, manufacturing, business and commercial	919,286			935,614
Agriculture	258,749			256,452
Retail	351,129			348,749
Office	365,836			356,782
Land development and lots	170,603			162,273
Hotel, resort and hospitality	172,749			167,396
Multi-family	222,084			211,862
Food and beverage	99,714			108,977
Warehousing	167,218			125,372
Health services	141,584			155,529
Residential construction	120,595			134,848
All other	182,853			187,508
Loans acquired in the quarter	215,017			—
Purchase accounting valuations	(25,035		)	(25,331		)
Total loans secured by real estate	$	4,412,411		$	4,206,097

Allowance For Loan Losses

The process utilized by Heartland to determine the appropriateness of the allowance for loan and losses is considered a critical accounting practice for Heartland and has remained consistent over the past several years. The allowance for loan losses represents management's estimate of identified and unidentified probable losses in the existing loan portfolio. For additional details on the specific factors considered in determining the allowance for loan losses, refer to the critical accounting policies section of Heartland's Annual Report on Form 10-K for the year ended December 31, 2017.

Nonperforming loans were $64.8 million or 0.96% of total loans at March 31, 2018, compared to $63.4 million or 0.99% of total loans at December 31, 2017. At March 31, 2018, approximately $28.8 million or 44% of Heartland's nonperforming loans had individual loan balances exceeding $1.0 million and represented loans to eight borrowers. At March 31, 2018, and December 31,

2017, Heartland had $11.6 million and $13.5 million, respectively, of nonperforming residential real estate loans that were repurchased under various GNMA or other guaranteed loan programs. The portion of Heartland's nonperforming nonresidential real estate loans covered by government guarantees totaled $5.1 million at March 31, 2018, compared to $3.0 million at December 31, 2017.

The allowance for loan losses was 0.87% of loans at both March 31, 2018, and December 31, 2017, and 90.48% and 87.82% of nonperforming loans at March 31, 2018, and December 31, 2017, respectively. Excluding the acquired loans covered by the valuation reserves, the ratio of the allowance for loan losses to outstanding loans was 1.14% at March 31, 2018, and 1.13% at December 31, 2017. At March 31, 2018, valuation reserves totaled $41.9 million and covered $1.65 billion of acquired loans. At December 31, 2017, valuation reserves totaled $36.4 million and covered $1.51 billion of acquired loans. Loans delinquent 30 to 89 days as a percent of total loans was 0.21% at March 31, 2018, in comparison with 0.27% at December 31, 2017.

The table below presents the changes in the allowance for loan losses during the three month periods ended March 31, 2018 and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017
Balance at beginning of period	$	55,686		$	54,324
Provision for loan losses	4,263			3,641
Recoveries on loans previously charged off	931			752
Charge-offs on loans	(2,224		)	(3,718		)
Balance at end of period	$	58,656		$	54,999
Annualized ratio of net charge offs to average loans	0.08		%	0.22		%

The table below presents the amounts of nonperforming loans and other nonperforming assets on the dates indicated, in thousands:

NONPERFORMING ASSETS	March 31,						December 31,
	2018			2017			2017			2016
Nonaccrual loans	$	64,806		$	62,868		$	62,581		$	64,299
Loans contractually past due 90 days or more	22			872			830			86
Total nonperforming loans	64,828			63,740			63,411			64,385
Other real estate	11,801			11,188			10,777			9,744
Other repossessed assets	423			739			411			663
Total nonperforming assets	$	77,052		$	75,667		$	74,599		$	74,792
Performing troubled debt restructured loans(1)	$	3,206		$	11,010		$	6,617		$	10,380
Nonperforming loans to total loans	0.96		%	1.19		%	0.99		%	1.20		%
Nonperforming assets to total loans plus repossessed property	1.14		%	1.41		%	1.17		%	1.39		%
Nonperforming assets to total assets	0.77		%	0.90		%	0.76		%	0.91		%
(1) Represents accruing troubled debt restructured loans performing according to their restructured terms.

The schedules below summarize the changes in Heartland's nonperforming assets during the first three months of 2018, in thousands:

	Nonperforming Loans			Other Real Estate Owned			Other Repossessed Assets			Total Nonperforming Assets
December 31, 2017	$	63,411		$	10,777		$	411		$	74,599
Loan foreclosures	(939		)	877			62			—
Net loan charge-offs	(1,293		)	—			—			(1,293		)
Acquired nonperforming assets	1,652			807			—			2,459
New nonperforming loans	8,546			—			—			8,546
Reduction of nonperforming loans(1)	(6,549		)	—			—			(6,549		)
OREO/Repossessed assets sales proceeds	—			(648		)	(9		)	(657		)
OREO/Repossessed assets writedowns, net	—			(12		)	(4		)	(16		)
Net activity at Citizens Finance Co.	—			—			(37		)	(37		)
March 31, 2018	$	64,828		$	11,801		$	423		$	77,052
(1) Includes principal reductions and transfers to performing status.

Securities

The composition of Heartland's securities portfolio is managed to maximize the return on the portfolio while considering the impact it has on Heartland's asset/liability position and liquidity needs. Securities represented 23% and 25% of total assets at March 31, 2018, and December 31, 2017, respectively. Total available for sale securities as of March 31, 2018, were $2.03 billion, a decrease of$189.1 millionor9%from$2.22 billionatDecember 31, 2017.

The table below presents the composition of the securities portfolio, including available for sale, held to maturity securities and other, by major category, as of March 31, 2018, and December 31, 2017, in thousands:

SECURITIES PORTFOLIO COMPOSITION	March 31, 2018				December 31, 2017
	Amount		Percent		Amount		Percent
U.S. government corporations and agencies	$	11,188	0.49	%	$	5,328	0.21	%
Mortgage and asset-backed securities	1,647,604		71.61		1,753,736		70.35
Obligation of states and political subdivisions	601,946		26.17		694,565		27.86
Equity securities	16,693		0.73		16,674		0.67
Other securities	22,982		1.00		22,563		0.91
Total securities	$	2,300,413	100.00	%	$	2,492,866	100.00	%

The percentage of Heartland's securities portfolio comprised of mortgage and asset-backed securities was 72% at March 31, 2018, compared to 70% at December 31, 2017. Approximately 77% of Heartland's mortgage and asset-backed securities were issued by government-sponsored enterprises at March 31, 2018. Heartland's securities portfolio had an expected modified duration of 4.73 years as of March 31, 2018, compared to 4.71 years as of year-end 2017.

At March 31, 2018, Heartland had $23.0 million of other securities, including capital stock in each Federal Home Loan Bank ("FHLB") of which each of its bank subsidiaries is a member. All of these securities were classified as other securities held at cost.

Deposits

Total deposits were $8.54 billion as of March 31, 2018, compared to $8.15 billion at year-end 2017, an increase of $394.6 million or 5%. This increase included $357.3 million of deposits, at fair value, acquired in the Signature Bancshares, Inc. transaction. Exclusive of this transaction, total deposits increased $37.3 million or less than 1% since December 31, 2017.

The table below presents the composition of Heartland's deposits by category as of March 31, 2018, and December 31, 2017, in thousands:

DEPOSITS	March 31, 2018				December 31, 2017
	Amount		Percent		Amount		Percent
Demand	$	3,094,457	36.23	%	$	2,983,128	36.62	%
Savings	4,536,106		53.10		4,240,328		52.05
Time	910,977		10.67		923,453		11.33
Total	$	8,541,540	100.00	%	$	8,146,909	100.00	%

Demand deposits totaled $3.09 billion at March 31, 2018, an increase of $111.3 million or 4% since year-end 2017, with $105.5 million of the increase attributable to the Signature Bancshares, Inc. transaction. Excluding demand deposits acquired in this transaction, demand deposits increased $5.8 million or less than 1% since year-end 2017. Savings deposits increased $295.8 million or 7% to $4.54 billion at March 31, 2018, from $4.24 billion at December 31, 2017. Excluding savings deposits of $195.2 million acquired in the Signature Bancshares, Inc. transaction, savings deposits increased $100.6 million or 2% since year-end 2017. Time deposits decreased $12.5 million or 1% since December 31, 2017, and exclusive of $56.7 million of time deposits acquired in the first quarter of 2018, time deposits decreased $69.1 million or 7% since year-end 2017.

Short-Term Borrowings

Short-term borrowings, which Heartland defines as borrowings with an original maturity of one year or less, were as follows as of March 31, 2018, and December 31, 2017, in thousands:

	March 31, 2018		December 31, 2017
Securities sold under agreement to repurchase	$	104,799	$	107,957
Federal funds purchased	5,100		168,250
Advances from the FHLB	—		40,000
Notes payable to unaffiliated banks	15,000		—
Other short-term borrowings	6,341		8,484
Total	$	131,240	$	324,691

Short-term borrowings generally include federal funds purchased, securities sold under agreements to repurchase, short-term FHLB advances and discount window borrowings from the Federal Reserve Bank. These funding alternatives are utilized in varying degrees depending on their pricing and availability. All of Heartland's bank subsidiaries own FHLB stock in one of the Chicago, Dallas, Des Moines, San Francisco or Topeka FHLBs, enabling them to borrow funds from their respective FHLB for short-term or long-term purposes under a variety of programs. The amount of short-term borrowings of Heartland was $131.2 million at March 31, 2018, compared to $324.7 million at year-end 2017, a decrease of $193.5 million or 60%.

All of the Heartland bank subsidiaries provide retail repurchase agreements to their customers as a cash management tool, which sweep excess funds from demand deposit accounts into these agreements. Although the aggregate balance of these retail repurchase agreements is subject to variation, the account relationships represented by these balances are principally local. The balances of retail repurchase agreements were $104.8 million at March 31, 2018, compared to $108.0 million at December 31, 2017, a decrease of $3.2 million or 3%.

Also included in short-term borrowings is a $25.0 million revolving credit line agreement Heartland has with an unaffiliated bank, primarily to provide liquidity to Heartland. The borrowing capacity of this revolving credit line was increased from $20.0 million to $25.0 million on June 14, 2017. During the first quarter of 2018, Heartland had advances of $15.0 million on this line. The outstanding balance at March 31, 2018, was $15.0 million compared to $0 at December 31, 2017.

Other Borrowings

The outstanding balances of other borrowings, which Heartland defines as borrowings with an original maturity date of more than one year, are shown in the table below, net of discount and issuance costs amortization as of March 31, 2018, and December 31, 2017, in thousands:

	March 31, 2018		December 31, 2017
Advances from the FHLB	$	3,629	$	6,702
Wholesale repurchase agreements	30,000		30,000
Trust preferred securities	122,061		121,886
Senior notes	6,000		11,000
Note payable to unaffiliated bank	32,667		33,667
Contracts payable for purchase of real estate and other assets	1,858		1,881
Subordinated notes	74,036		74,000
Other borrowings	5,867		5,875
Total	$	276,118	$	285,011

As of March 31, 2018, the amount of other borrowings was $276.1 million, a decrease of $8.9 million or 3% since year-end 2017. The decrease since year-end 2017 was due to scheduled principal payments in accordance with the debt agreements. Heartland acquired $5.9 million of subordinated debt in the Signature Bancshares, Inc. transaction, which was paid off simultaneously with the closing of the transaction.

Heartland has a non-revolving credit facility with an unaffiliated bank, which provides a borrowing capacity of up to $75.0 million. At March 31, 2018, $32.7 million was outstanding on this non-revolving credit line compared to $33.7 million outstanding at December 31, 2017. The balance of the $32.7 million note is due in April 2021. At March 31, 2018, Heartland had $39.3 million available on this non-revolving credit facility, of which no balance was drawn.

A schedule of Heartland's trust preferred securities outstanding excluding deferred issuance costs, as of March 31, 2018, is as follows, in thousands:

	Amount Issued		Issuance Date	Interest Rate	Interest Rate as of 3/31/18(1)		Maturity Date	Callable Date
Heartland Financial Statutory Trust IV	$	10,258	03/17/2004	2.75% over LIBOR	4.93%	(2)	03/17/2034	06/17/2018
Heartland Financial Statutory Trust V	20,619		01/27/2006	1.33% over LIBOR	3.05%	(3)	04/07/2036	07/07/2018
Heartland Financial Statutory Trust VI	20,619		06/21/2007	1.48% over LIBOR	3.60%	(4)	09/15/2037	06/15/2018
Heartland Financial Statutory Trust VII	20,619		06/26/2007	1.48% over LIBOR	3.49%	(5)	09/01/2037	06/01/2018
Morrill Statutory Trust I	8,923		12/19/2002	3.25% over LIBOR	5.54%	(6)	12/26/2032	06/26/2018
Morrill Statutory Trust II	8,559		12/17/2003	2.85% over LIBOR	5.03%	(7)	12/17/2033	06/17/2018
Sheboygan Statutory Trust I	6,374		09/17/2003	2.95% over LIBOR	5.13%		09/17/2033	06/17/2018
CBNM Capital Trust I	4,322		09/10/2004	3.25% over LIBOR	5.37%		12/15/2034	06/15/2018
Citywide Capital Trust III	6,341		12/19/2003	2.80% over LIBOR	4.57%		12/19/2033	07/23/2018
Citywide Capital Trust IV	4,195		09/30/2004	2.20% over LIBOR	4.12%		09/30/2034	05/23/2018
Citywide Capital Trust V	11,354		05/31/2006	1.54% over LIBOR	3.66%		07/25/2036	06/15/2018
	$	122,183
(1) Effective weighted average interest rate as of March 31, 2018, was 5.32% due to interest rate swap transactions on the variable rate securities as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(2) Effective interest rate as of March 31, 2018, was 5.01% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(3) Effective interest rate as of March 31, 2018, was 4.69% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(4) Effective interest rate as of March 31, 2018, was 3.87% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(5) Effective interest rate as of March 31, 2018, was 3.83% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(6) Effective interest rate as of March 31, 2018, was 4.92% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.
(7) Effective interest rate as of March 31, 2018, was 4.51% due to an interest rate swap transaction as discussed in Note 7 to Heartland's consolidated financial statements included herein.

CAPITAL REQUIREMENTS

The Federal Reserve Board, which supervises bank holding companies, has adopted capital adequacy guidelines that are used to assess the adequacy of capital of a bank holding company. The federal banking agencies implemented final rules ("Final Rules") to establish a new comprehensive regulatory capital framework with a phase-in period beginning on January 1, 2015, and ending on January 1, 2019. The Final Rules implemented the third installment of the Basel Accords ("Basel III") regulatory capital reforms and changes required by the Dodd-Frank Wall Street Reform and Consumer Protection Act ("Dodd-Frank Act"). The Final Rules substantially revised the regulatory risk-based capital rules applicable to Heartland. Under Basel III, Heartland must hold a conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer for 2018 is 1.875%.

The most recent notification from the FDIC categorized Heartland and each of its bank subsidiaries as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the categorization of any of these entities.

Heartland's capital ratios are calculated in accordance with Federal Reserve Board instructions and are required regulatory financial measures. The following table illustrates Heartland's capital ratios and the Federal Reserve Board's current capital adequacy guidelines for the dates indicated, in thousands:

	Total Capital (to Risk- Weighted Assets)			Tier 1 Capital (to Risk- Weighted Assets)			Common Equity Tier 1 (to Risk- Weighted Assets)			Tier 1 Capital (to Average Assets)
March 31, 2018	13.46		%	11.75		%	10.17		%	9.66		%
Minimum capital requirement	8.00		%	6.00		%	4.50		%	4.00		%
Well capitalized requirement	10.00		%	8.00		%	6.50		%	5.00		%
Minimum capital requirement, including fully-phased in capital conservation buffer (2019)	10.50		%	8.50		%	7.00		%	N/A
Risk-weighted assets	$	7,779,234		$	7,779,234		$	7,779,234		N/A
Average Assets	N/A			N/A			N/A			$	9,459,723
December 31, 2017	13.45		%	11.70		%	10.07		%	9.20		%
Minimum capital requirement	8.00		%	6.00		%	4.50		%	4.00		%
Well capitalized requirement	10.00		%	8.00		%	6.50		%	5.00		%
Minimum capital requirement, including fully-phased in capital conservation buffer (2019)	10.50		%	8.50		%	7.00		%	N/A
Risk-weighted assets	$	7,511,544		$	7,511,544		$	7,511,544		N/A
Average Assets	N/A			N/A			N/A			$	9,552,227

Retained earnings that could be available for the payment of dividends to Heartland from its banks totaled approximately $262.0 million and $242.3 million at March 31, 2018, and December 31, 2017, respectively, under the capital requirements to remain well capitalized. At March 31, 2018, and December 31, 2017, retained earnings that could be available for the payment of dividends under the most restrictive minimum capital requirements totaled $417.4 million and $392.5 million, respectively.

On July 29, 2016, Heartland filed a universal shelf registration statement with the SEC to register debt or equity securities. This shelf registration statement, which was effective immediately, provides Heartland with the ability to raise capital, subject to market conditions and SEC rules and limitations, if Heartland's board of directors decides to do so. This registration statement will permit Heartland, from time to time, in one or more public offerings, to offer debt securities, subordinated notes, common stock, preferred stock, rights or any combination of these securities. The amount of securities that may be offered is not specified in the registration statement, and the terms of any future offerings will be established at the time of the offering. In November 2016, Heartland offered and sold 1,379,690 shares of its common stock pursuant to this registration statement.

On February 23, 2018, Heartland completed the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, based in Minnetonka, Minnesota. Based on Heartland's closing price of $53.55 per share of common stock on February 23, 2018, the aggregate consideration was approximately $61.4 million, which was paid by delivery of 1,000,843 shares of common stock and $7.8 million of cash.

COMMITMENTS AND CONTRACTUAL OBLIGATIONS

Commitments and Contractual Obligations

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Heartland's bank subsidiaries evaluate the creditworthiness of customers to which they extend a credit commitment on a case-by-case basis and may require collateral to secure any credit extended. The amount of collateral obtained is based upon management's credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment and income-producing commercial properties. Standby letters of credit and financial guarantees are conditional commitments issued by Heartland's bank subsidiaries to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. At March 31, 2018, and December 31, 2017, commitments to extend credit aggregated $2.11 billion and $1.96 billion, respectively. Standby letters of credit aggregated $56.0 million at March 31, 2018, and $55.5 million at December 31, 2017.

Contractual obligations and other commitments were disclosed in Heartland's Annual Report on Form 10-K for the year ended December 31, 2017. Except for the agreement to acquire First Bank Lubbock Bancshares, Inc. described below, there have been no material changes in Heartland's contractual obligations and other commitments since that report was filed.

On December 12, 2017, Heartland entered into a definitive merger agreement with First Bank Lubbock Bancshares, Inc., parent company of FirstBank & Trust Company, headquartered in Lubbock, Texas. Under the terms of the merger agreement, Heartland will acquire First Bank Lubbock Bancshares, Inc. in a transaction valued at approximately $185.6 million as of the announcement date, subject to certain adjustments. Shareholders of First Bank Lubbock Bancshares, Inc. will receive a combination of Heartland common stock and cash. As of March 31, 2018, FirstBank & Trust Company had total assets of $971.5 million, including $704.9 million of gross loans held to maturity, and deposits of $869.3 million. FirstBank & Trust Company will operate as a wholly-owned subsidiary of Heartland. The transaction is expected to close in the second quarter of 2018, and the systems conversion is expected to occur in the third quarter of 2018.

On a consolidated basis, Heartland maintains a large balance of short-term securities that, when combined with cash from operations, Heartland believes are adequate to meet its funding obligations.

At the parent company level, routine funding requirements consist primarily of dividends paid to stockholders, debt service on revolving credit arrangements and trust preferred securities issuances, repayment requirements under other debt obligations and payments for acquisitions. The parent company obtains the funding to meet these obligations from dividends paid by its bank subsidiaries and the issuance of debt and equity securities. On June 14, 2017, Heartland's revolving credit agreement with an unaffiliated bank was increased to $25.0 million from $20.0 million of maximum borrowing capacity. At March 31, 2018, $15.0 million was outstanding. Heartland also has a non-revolving credit line with the same unaffiliated bank. At March 31, 2018, $39.3 million was available on this non-revolving credit line. These credit agreements contain specific financial covenants, all of which Heartland complied with as of March 31, 2018.

The ability of Heartland to pay dividends to its stockholders is dependent upon dividends paid to Heartland by its subsidiaries. The bank subsidiaries are subject to statutory and regulatory restrictions on the amount they may pay in dividends. To maintain acceptable capital ratios at Heartland's bank subsidiaries, certain portions of their retained earnings are not available for the payment of dividends.

Heartland continues to explore opportunities to expand the size of its independent community banks. In the current banking industry environment, Heartland seeks these opportunities for growth through acquisitions. Heartland is primarily focused on possible acquisitions in the markets it currently serves, in which there would be an opportunity to increase market share, achieve efficiencies and provide greater convenience for current customers. However, Heartland may also pursue acquisitions in areas outside of its current geographic footprint. Future expenditures relating to expansion efforts, in addition to those identified above, cannot be estimated at this time.

Derivative Financial Instruments

Heartland enters into mortgage banking derivatives, which are classified as free standing derivatives. These derivatives include interest rate lock commitments provided to customers to fund certain mortgage loans to be sold into the secondary market and forward commitments for the future delivery of these loans. Heartland enters into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future interest rate changes on the commitments to fund these loans and on the residential mortgage loans held as available for sale. See Note 7 to the consolidated financial statements include in this Quarterly Report on Form 10-Q for additional information on Heartland's derivative financial instruments.

LIQUIDITY

Liquidity refers to Heartland's ability to maintain a cash flow that is adequate to meet maturing obligations and existing commitments, to withstand fluctuations in deposit levels, to fund operations and to provide for customers’ credit needs. The liquidity of Heartland principally depends on cash flows from operating activities, investment in and maturity of assets, changes in balances of deposits and borrowings and its ability to borrow funds in the money or capital markets.

At March 31, 2018, Heartland had $266.3 million of cash and cash equivalents, time deposits in other financial institutions of $6.3 million and securities available for sale of $2.03 billion.

Management of investing and financing activities, and market conditions, determine the level and the stability of net interest cash flows. Management attempts to mitigate the impact of changes in market interest rates to the extent possible, so that balance sheet growth is the principal determinant of growth in net interest cash flows.

Heartland's short-term borrowing balances are dependent on commercial cash management and smaller correspondent bank relationships and, as a result, will normally fluctuate. Management believes these balances, on average, to be stable sources of funds; however, management intends to rely on deposit growth and additional FHLB borrowings as needed in the future. As of March 31, 2018, Heartland had $131.2 million of short-term borrowings outstanding.

In the event of short-term liquidity needs, Heartland's banks may purchase federal funds from each other or from correspondent banks and may also borrow from the Federal Reserve Bank. Additionally, the banks' FHLB memberships give them the ability to borrow funds for short-term and long-term purposes under a variety of programs. At March 31, 2018, Heartland had $1.15 billion of borrowing capacity under these programs.

Heartland's revolving credit line agreement with an unaffiliated bank provides a maximum borrowing capacity of $25.0 million. During the first quarter of 2018, Heartland had advances of $15.0 million on this line, which was outstanding at March 31, 2018. Heartland also has a non-revolving credit line with the same unaffiliated bank, which had $39.3 million of borrowing capacity at March 31, 2018, of which no balance had been drawn.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market risk is the risk of loss arising from adverse changes in market prices and rates. Heartland's market risk is comprised primarily of interest rate risk resulting from its core banking activities of lending and accepting deposits. Interest rate risk measures the impact on earnings from changes in interest rates and the effect on the current fair market values of Heartland's assets, liabilities and off-balance sheet contracts. Heartland's objective is to measure this risk and manage its balance sheet to avoid unacceptable potential for economic loss.

Management continually develops and applies strategies to mitigate market risk. Exposure to market risk is reviewed on a regular basis by the asset/liability committees of Heartland's bank subsidiaries and, on a consolidated basis, by Heartland's executive management and board of directors. Darling Consulting Group, Inc. has been engaged to provide services related to asset/liability management and strategy to Heartland and its bank subsidiaries. At least quarterly, a detailed review of the balance sheet risk profile is performed for Heartland and each of its bank subsidiaries. Included in these reviews are interest rate sensitivity analyses, which simulate changes in net interest income in response to various interest rate scenarios. These analyses consider current portfolio rates, existing maturities, repricing opportunities and market interest rates, in addition to prepayments and growth under different interest rate assumptions. Selected strategies are modeled prior to implementation to determine their effect on Heartland's interest rate risk profile and net interest income. Heartland believes its primary market risk exposures did not change significantly in the first three months of 2018.

The core interest rate risk analysis utilized by Heartland examines the balance sheet under increasing and decreasing interest rate scenarios that are neither too modest nor too extreme. All rate changes are ramped over a 12-month horizon based upon a parallel shift in the yield curve and then maintained at those levels over the remainder of the simulation horizon. Using this approach, management is able to see the effect that both a gradual change of rates (year one) and a rate shock (year two and beyond) could have on Heartland's net interest income. Starting balances in the model reflect actual balances on the "as of" date, adjusted for material transactions. Pro-forma balances remain static. This methodology enables interest rate risk embedded within the existing balance sheet structure to be isolated from the interest rate risk often caused by growth in assets and liabilities. Due to the low interest rate environment, the simulations under a decreasing interest rate scenario were prepared using a 100 basis point shift in rates. The most recent reviews at March 31, 2018, and March 31, 2017, provided the following results, in thousands:

	2018				2017
	Net Interest Margin		% Change From Base		Net Interest Margin		% Change From Base
Year 1
Down 100 Basis Points	$	362,642	(3.02	)%	$	288,697	(2.40	)%
Base	$	373,953			$	295,788
Up 200 Basis Points	$	377,453	0.94	%	$	299,112	1.12	%
Year 2
Down 100 Basis Points	$	346,225	(7.41	)%	$	270,796	(8.45	)%
Base	$	379,901	1.59	%	$	293,625	(0.73	)%
Up 200 Basis Points	$	404,390	8.14	%	$	310,771	5.07	%

Heartland uses derivative financial instruments to manage the impact of changes in interest rates on its future interest income or interest expense. Heartland is exposed to credit-related losses in the event of nonperformance by the counterparties to these derivative instruments, but believes it has minimized the risk of these losses by entering into the contracts with large, stable financial institutions. The estimated fair market values of these derivative instruments are presented in Note 7 to the consolidated financial statements included in this Quarterly Report on Form 10-Q.

Heartland enters into financial instruments with off balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated balance sheets. Commitments to extend credit are agreements to lend funds to a customer as long as there is no violation of any condition established in the contract relating to the commitment. Commitments generally have fixed expiration dates and may require collateral from the borrower. Standby letters of credit are conditional commitments issued by Heartland to guarantee the performance of a customer to a third party up to a stated amount and subject to specified terms and conditions. These commitments to extend credit and standby letters of credit are not recorded on the balance sheet until the loan is made or the letter or credit is issued.

Heartland periodically holds a securities trading portfolio that would also be subject to elements of market risk. These securities are carried on the balance sheet at fair value. At both March 31, 2018, and December 31, 2017, Heartland held no securities in its securities trading portfolio.

ITEM 4. CONTROLS AND PROCEDURES

Based on an evaluation, as of the end of the period covered by this Quarterly Report on Form 10-Q, under the supervision and with the participation of Heartland's management, including its Chief Executive Officer and Chief Financial Officer, the Chief Executive Officer and Chief Financial Officer have concluded that Heartland's disclosure controls and procedures (as defined in Rule 13a-15(e) and Rule 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended) were effective. During the quarter ended March 31, 2018, there have been no changes in Heartland's internal controls over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended) that have materially affected, or are reasonably likely to materially affect, Heartland's internal control over financial reporting.

PART II

ITEM 1. LEGAL PROCEEDINGS

There are no material pending legal proceedings to which Heartland or its subsidiaries are a party other than ordinary routine litigation incidental to their respective businesses. While the ultimate outcome of current legal proceedings cannot be predicted with certainty, it is the opinion of management that the resolution of these legal actions should not have a material effect on Heartland's consolidated financial position or results of operations.

ITEM 1A. RISK FACTORS

There have been no material changes in the risk factors applicable to Heartland from those disclosed in Part I, Item 1A. “Risk Factors” in Heartland's 2017 Annual Report on Form 10-K. Please refer to that section of Heartland's Form 10-K report for disclosures regarding the risks and uncertainties related to Heartland's business.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Heartland's board of directors has authorized management to acquire and hold up to 500,000 shares of common stock as treasury shares at any one time. Heartland and its affiliated purchasers made no purchases of its common stock during the three months ended March 31, 2018.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable

ITEM 5. OTHER INFORMATION

None

ITEM 6. EXHIBITS

Exhibits

10.1	(1)	Form of Time-Based Restricted Stock Unit Award Agreement under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan for time-based awards vesting in the first, second and third years following the original grant award.
10.2	(1)	Form of Performance-Based Restricted Stock Unit Award Agreement One-Year Performance Period under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan.
10.3	(1)	Form of Performance-Based Restricted Stock Unit Award Agreement Three-Year Performance Period under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan.
31.1	(1)	Certification of Chief Executive Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act.
31.2	(1)	Certification of Chief Financial Officer pursuant to Rule 13a-14(a) of the Securities Exchange Act.
32.1	(1)	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	(1)	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101		Financial statement formatted in Extensible Business Reporting Language: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Cash Flows, (v) the Consolidated Statements of Changes in Equity, and (vi) the Notes to Consolidated Financial Statements.

______________

(1) Filed or furnished herewith.

SIGNATURES

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

HEARTLAND FINANCIAL USA, INC.

(Registrant)

/s/ Lynn B. Fuller

By: Lynn B. Fuller

Chairman and Chief Executive Officer

(Principal Executive Officer and Duly Authorized Officer)

/s/ Bryan R. McKeag

By: Bryan R. McKeag

Executive Vice President and Chief Financial Officer

(Principal Financial Officer and Duly Authorized Officer)

/s/ Janet M. Quick

By: Janet M. Quick

Executive Vice President and Deputy Chief Financial Officer

(Principal Accounting Officer and Duly Authorized Officer)

Dated: May 8, 2018

EX-10.1

Heartland Financial USA, Inc.

2012 Long-Term Incentive Plan

Time-Based Restricted Stock Unit Award Agreement

The Participant specified below is hereby granted a restricted stock unit award by Heartland Financial USA, Inc. (the “Company”), under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan (as amended and restated, the “Plan”). The restricted stock units awarded by this Award Agreement (this “Agreement”) shall be subject to the terms of the Plan and the terms set forth in this Agreement. All capitalized terms used in this Agreement and not otherwise defined have the meaning assigned to them in the Plan.

Section 1.Award. The Company hereby grants to the Participant an award of restricted stock units (each such unit, an “RSU”), where each RSU represents the right of the Participant to receive one share of Company stock (“Share”) in the future, subject to the terms of this Agreement and the Plan. For purposes of this Agreement:

The “Participant” is ______________________________.

The “Grant Date” is ______________________________.

The number of RSUs is _____________________________.

Section 2.Vesting of RSU.

(a)The RSUs shall vest with respect to one-third (1/3) of the RSUs (rounded down to the nearest whole number and fully vested on the third vesting date) on March 6 of each of the three years following the year of the grant, or the nearest prior business day if March 6 is not a business day (such date, or such earlier date on which the RSU shall vest pursuant to this Section 2 being hereafter referred to as the “Vesting Date”); provided that the Participant’s Termination of Service has not occurred prior to the Vesting Date. A “Termination of Service” shall mean the Participant’s cessation of employment with the Company. The price at which the RSUs shall vest is the fair market value of Company stock at closing on the business day prior to the Vesting Date.

(b)Notwithstanding the foregoing provisions of this Section 2, the RSUs shall become fully vested immediately upon (i) the Participant’s Disability, or (ii) the Participant’s death.

(c)Notwithstanding the foregoing provisions of this Section 2,if the Participant’s Termination of Service occurs due to a Qualifying Retirement, all RSUs shall become vested as of the date of such Termination of Service due to Qualifying Retirement. For such purposes, a “Qualifying Retirement” means a voluntary Termination of Services by the Participant on or after the date the Participant reaches the age of 62, and provided that (A) the Participant has provided at least five (5) years of full-time equivalent services to the Company or a Subsidiary through the date of such Termination of Services; (B) the Participant covenants that the Participant shall not engage in any full-time employment with any entity thereafter (although Participant shall be entitled to engage in part-time employment, including services as a member of a board of directors or similar body, with an entity that does not compete with the Company or any Subsidiary) unless such employment has been approved in writing by the Chair of the Committee;(C) the Participant executes a general release and waiver of claims against the Company at the time of such Termination of Services; and (D) the Participant executes a confidentiality, non-solicitation, and non-competition agreement with the Company at the time of such Termination of Service.  Consistent with Section 5.2 of the Plan, any question regarding whether a voluntary Termination of Service constitutes a Qualifying Retirement shall be determined by the Committee and the decision of the Committee shall be final and binding upon the Participant.

(d)Immediately upon a Change in Control, if the obligations under this Agreement are not assumed by the Company or its successor in such Change in Control, all RSUs that have not been previously forfeited shall become vested. Otherwise, if the obligations under this Agreement are assumed by the Company or its successor in such Change in Control, and if a Participant’s employment by the Company or Bank or successor of the Company or Bank shall become subject to a Termination of Service within the period beginning six months prior to a Change in Control and ending 24 months after a Change in Control, all RSUs then held by the Participant shall become vested upon the later to occur of the Termination of Service or Change in Control. The foregoing provisions are subject to any forfeiture and expiration provisions otherwise applicable to the RSUs.

(e)Except as set forth in Section 2(b),Section 2(c) and Section 2(d) above, upon the Participant’s Termination of Service, Participant shall forfeit all RSUs that have not vested as of such Termination of Service and Participant shall have no further rights under this Agreement.

Section 3.Precondition of Award. No Award of RSUs to a Participant will be effective unless Participant executes the Nonsolicitation Agreement attached as Exhibit A.

Section 4.Settlement of RSUs. Delivery of Shares or other amounts under this Agreement and the Plan shall be subject to the following:

(a)Delivery of Shares. The Company shall deliver to the Participant one Share free and clear of any restrictions in settlement of each of the vested and unrestricted RSUs within 30 days after such RSU becomes vested. Only whole Shares shall be issued, with any fractional RSUs rounded down to the nearest whole Share.

(b)Compliance with Applicable Laws.  Notwithstanding any other term of this Agreement or the Plan, the Company shall have no obligation to deliver any Shares or make any other distribution of benefits under this Agreement or the Plan unless such delivery or distribution complies with all applicable laws and the applicable rules of any securities exchange or similar entity.

(c)Certificates Not Required.  To the extent that this Agreement and the Plan provide for the issuance of Shares, such issuance may be effected on a non-certificated basis, to the extent not prohibited by applicable law or the applicable rules of any securities exchange or similar entity.

Section 5.Withholding.  All deliveries of Shares pursuant to this Award shall be subject to withholding of all applicable taxes. The Company shall have the right to require the Participant (or if applicable, permitted assigns, heirs and Designated Beneficiaries) to remit to the Company an amount sufficient to satisfy any tax requirements prior to the delivery date of any Shares in connection with this Agreement.  Except as may be provided otherwise by the Committee, such withholding obligations may be satisfied at the election of the Participant (a) through debit of a deposit account held by the Participant at a Heartland affiliated bank, or (b) through the surrender of Shares to which the Participant is otherwise entitled under the Plan; provided, however, that except as otherwise specifically provided by the Committee, such Shares under clause (b) may not be used to satisfy more than the Company’s minimum statutory withholding obligation.

Section 6.Non-Transferability of RSUs. No RSU granted pursuant to this Agreement is transferable except as designated by the Participant by will or by the laws of descent and distribution or pursuant to a domestic relations order. Except as provided in the immediately preceding sentence, this Agreement shall not be assigned, transferred, pledged, hypothecated or otherwise disposed of by the Participant in any way whether by operation of law or otherwise, and shall not be subject to execution, attachment or similar process.  Any attempt at assignment, transfer, pledge, hypothecation or other disposition of this Agreement contrary to the provisions hereof, or the levy of any attachment or similar process upon this Agreement or the RSUs it represents, shall be null and void and without effect.

Section 7.No Rights as Stockholder. The Participant shall not have any rights of a Stockholder with respect to the RSUs, including but not limited to, dividend or voting rights, prior to the settlement of the RSUs pursuant to Section 4(a) above and issuance of a stock certificate or its equivalent as provided herein.

Section 8.Heirs and Successors.  This Agreement shall be binding upon, and inure to the benefit of, the Company and its successors and assigns, and upon any person acquiring all or substantially all of the Company’s assets or business. If any rights of the Participant or benefits distributable to the Participant under this Agreement have not been settled or distributed at the time of the Participant’s death and have not been designated to pass to a certain beneficiary, such rights shall be provided to the legal representative of the estate of the Participant.

Section 9.Administration.  The authority to manage and control the operation and administration of this Agreement and the Plan shall be vested in the Committee, and the Committee shall have all powers with respect to this Agreement as it has with respect to the Plan. Any interpretation of this Agreement or the Plan by the Committee and any decision made by the Committee with respect to this Agreement or the Plan shall be final and binding on all persons.

Section 10.Plan Governs. Notwithstanding anything in this Agreement to the contrary, this Agreement shall be subject to the terms of the Plan, a copy of which may be obtained by the Participant from the Human Resources Department of the Company. This Agreement shall be subject to all interpretations, amendments, rules and regulations promulgated by the Committee from time to time. Notwithstanding any term of this Agreement to the contrary, in the event of any discrepancy between the corporate records of the Company and this Agreement, the corporate records of the Company shall control.

Section 11.Not an Employment Contract. Neither the RSUs granted under this Agreement nor this Agreement shall confer upon the Participant any rights with respect to continuance of employment or other service with the Company or a Subsidiary, nor shall they interfere in any way with any right the Company or a Subsidiary may otherwise have to terminate or modify the terms of the Participant’s employment or other service at any time.

Section 12.Amendment.  Without limitation of Section 15 and Section 16 below, this Agreement may be amended in accordance with the provisions of the Plan, and may otherwise be amended in writing by the Participant and the Company without the consent of any other person.

Section 13.Governing Law. This Agreement, the Plan and all actions taken in connection herewith and therewith shall be governed by and construed in accordance with the laws of the State of Delaware, without reference to principles of conflict of laws, except as superseded by applicable federal law.

Section 14.Validity. If any provision of this Agreement is determined to be illegal or invalid for any reason, said illegality or invalidity shall not affect the remaining parts hereof, but this Agreement shall be construed and enforced as if such illegal or invalid provision had never been included herein.

Section 15.Section 409A Amendment. This Agreement is intended to be exempt from Code Section 409A and this Agreement shall be administered and interpreted in accordance with such intent. The Committee reserves the right (including the right to delegate such right) to unilaterally amend this Agreement without the consent of the Participant in order to maintain an exclusion from the application of, or to maintain compliance with, Code Section 409A; and the Participant hereby acknowledges and consents to such rights of the Committee.

Section 16.Clawback. This Agreement, the RSUs and any Shares received under this Agreement, and any amount or benefit received under the Plan shall be subject to potential cancellation, recoupment, rescission, payback or other action in accordance with the terms of any applicable Company or Subsidiary clawback policy (the “Policy”) or any applicable law, as may be in effect from time to time. The Participant hereby acknowledges and consents to the Company’s or a Subsidiary’s application, implementation and enforcement of (a) the Policy and any similar policy established by the Company or a Subsidiary that may apply to the Participant, whether adopted prior to or following the date of this Agreement, and (b) any provision of applicable law relating to cancellation, rescission, payback or recoupment of compensation, and agrees that the Company or a Subsidiary may take such actions as may be necessary to effectuate the Policy, any similar policy and applicable law, without further consideration or action.

*    *    *    *    *

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed in its name and on its behalf, and the Participant acknowledges understanding and acceptance of, and agrees to, the terms of this Agreement, all as of the Grant Date. This Agreement and any amendments or supplements hereto may be executed in counterparts, each of which shall constitute an original, but taken together shall constitute a single contract.  Signature may be in electronic format, including by electronic acknowledgement.

HEARTLAND FINANCIAL USA, INC.

By:         Lynn B. Fuller

Print Name:     Lynn B. Fuller

Print Title:     Chairman and CEO

PARTICIPANT

By:         Via Electronic Acknowledgment

Print Name:     

EXHIBIT A

NONSOLICITATION AGREEMENT

This NONSOLICITATION AGREEMENT (the “Agreement”) is entered into between Heartland Financial USA, Inc., and its Affiliates (the “Company”) and the undersigned Employee.

WHEREAS, the Company is engaged in the business of providing financial services including lending and deposit products and services, which includes all services and products related in any way to deposit products, certificates of deposit, lines of credit, mortgage loans, agricultural loans, consumer loans, credit cards, electronic banking cards, as well as Wealth Advisory and Investment Services (collectively, the “Services”).

WHEREAS, to maximize the quality of services it provides to its customers, the Company encourages its employees to develop and maintain a proper business and professional relationship with and provide beneficial and competitive Services to its customers;

WHEREAS, in furtherance of developing these relationships and services, the Company compensates its employees for their time, trains its employees, discloses to its employees certain Confidential Information (as that term is defined below), and commits its resources to the development of these relationships and Confidential Information; and

WHEREAS, the Company’s customer and employee relationships represent a significant investment of the Company’s resources and are commercially important, and it is important that the Company protects its customers and employees from direct and indirect solicitation by competitor and former employees.

NOW, THEREFORE, in consideration of the Employee’s employment, the Employee’s access to Confidential Information, the Employee’s eligibility for discretionary compensation plans and programs in addition to any regular compensation, and the mutual covenants and promises set forth herein, the parties agree as follows:

1. Definitions. For purpose of this Agreement and except as otherwise provided for herein, these terms shall have the following definitions:

Affiliate means any US or foreign person related to the Company through ownership or through franchise or license agreements granted by the Company or an affiliate, including without limitation Arizona Bank & Trust, Citywide Banks, Citizens Finance, Dubuque Bank and Trust Company, First Community Bank, Illinois Bank & Trust, Minnesota Bank & Trust, Morrill & Janes Bank and Trust Company, New Mexico Bank & Trust, Premier Valley Bank, Rocky Mountain Bank, and Wisconsin Bank & Trust.

Confidential Information means trade secrets, intellectual property, and other proprietary information of the Company and its Affiliates, By way of example and not limitation, Confidential Information includes:

• operations, marketing, products, product development, and other plans;

• compensation practices;

• pricing and sales policies, techniques, and concepts;

• customer lists, records, and documents;

• prospective customer lists, records, and documents;

• information regarding employees and suppliers of the Company;

• the financial affairs of the Company;

• training and other manuals and internal policies;

• business opportunities or ventures being considered or pursued by the Company;

• patents, trademarks, copyrights, inventions, works of authorship, ideas, processes, formulas, source code, programs, know how, and improvements; and

• any other Company information in any form that is not generally known to any competitor of the Company or any other Person who could derive economic value from such information.

Person shall have the meaning ascribed in section 13(h)(8)(E) of the Securities Exchange Act of 1934, 15 U.S.C. § 78a et seq., and also includes any corporation, business venture, sole proprietorship, trust, and association.

2. Nonsolicitation

a. Customers. During the period of employment and for one year thereafter, the Employee shall not, without the prior written consent of the Company, solicit, call on, sell to, encourage, or arrange to have any other person solicit, call on, sell to, or otherwise provide any Services or any other competitive product or service designed, developed, distributed, sold, or marketed by the Company or its Affiliates during the period of the Employee’s employment by the Company to any of the customers of the Company. This subsection 2.a. shall not prohibit the Employee from providing any services or products that the Company does not offer as of the time of the Employee’s termination of employment with the Company.

b. Company Employees. During the period of employment and for one year thereafter, the Employee shall not, without the prior written consent of the Company, solicit, recruit, encourage, or arrange to have any other Person solicit, recruit or encourage any Company employee to terminate his/her employment with the Company to seek employment with a bank, credit union, financial institution, investment company, or other Person who competes directly or indirectly with the Company.

3. Choice of Law; Remedies. This Agreement shall be interpreted according to the laws of the state in which the entity for which the Employee works is headquartered. The parties agree that, regardless of any choice of law provisions of any jurisdiction, the Agreement shall be enforceable in any Court of competent jurisdiction in that state, and the parties expressly consent to the jurisdiction therein. The Company shall be entitled to an injunction to enforce this Agreement, as well as any other remedies at law or in equity. Should the Company need to commence legal action to enforce any provision of this Agreement or protects its rights under the Agreement; the Company shall recover its attorneys’ fees incurred in such legal action.

4. Successors. This Agreement shall inure to the benefit of and shall be enforceable by any Affiliate and by any successor or assignee of the Company and or any Affiliate.

5. Prior Agreements. This Agreement is intended as a clarification and amplification of any existing prior agreements between the parties, which prior agreements relate to the subject matter of the Agreement.

6. Amendment. No changes in or additions to the terms of this Agreement shall be valid or binding unless reduced to writing and signed by both parties.

7. Severability. The Employee and the Company agree that the covenants contained in this Agreement, or any of its paragraphs, sentences, or clauses are severable and separate, and the enforceability of any specific covenant or restriction shall not affect the validity or enforceability of any other covenant or restriction set forth herein. Each such covenant on the part of the Employee shall be construed as an agreement independent of any other provision in this Agreement, and the existence of any claim or cause of action of the Employee against the Company or any Affiliate whether predicated on this Agreement or otherwise, shall not constitute a defense to the enforcement of the Company of said covenants.

8. Waiver of Default. Any waiver by the Company of any default or violation under this Agreement shall not constitute a waiver of any other default or violation on a different occasion.

9. Termination; Effective Date. The Employee’s employment may be terminated by either the Company or the Employee in accordance with applicable law. This Agreement shall be in effect commencing on the date of the Agreement and, except as expressly provided for in this Agreement, shall continue in effect for one year after the Employee ceases to be employed by the Company.

10. Consent. The Employee acknowledges that he/she has had sufficient time to read, has read, and understands this Agreement. The Employee acknowledges having received a copy of this Agreement.

IN WITNESS WHEROF, the parties have hereto executed this Agreement.

“Employee”		“Company”
		HEARTLAND FINANCIAL USA, INC.
	By:	Lynn B. Fuller
Date:

EX-10.2

Heartland Financial USA, Inc.

2012 Long-Term Incentive Plan

Performance-Based Restricted Stock Unit Award Agreement

One-Year Performance Period

The Participant specified below is hereby granted a performance-based restricted stock unit award by Heartland Financial USA, Inc. (the “Company”) under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan (the “Plan”). The restricted stock units awarded by this Award Agreement (this “Agreement”) shall be subject to the terms of the Plan and the terms set forth in this Agreement. All capitalized terms used in this Agreement and not otherwise defined have the meaning assigned to them in the Plan.

Section 1.Award. The Company hereby grants to the Participant an award of restricted stock units (each such unit, an “RSU”), where each RSU represents the right of the Participant to receive one share of Company stock (“Share”) in the future, subject to the terms of this Agreement and the Plan. For all purposes of this Agreement:

The “Participant” is :    _________________________                    .

The “Grant Date” is:    _________________________                        

The number of RSUs is:    _________________________    

.

If not a direct employee of the Company, the Participant is an employee of that certain subsidiary bank of the Company designated on such employee’s tax records (the “Bank”).

Section 2.Vesting of RSUs.

(a)Vesting. To the extent earned in accordance with Section 2(b), and subject to forfeiture prior to vesting in accordance with Section 2(c), the RSUs shall vest on March 6 of the third calendar year following the year of the Grant Date (such date, or such earlier date on which the RSU shall vest pursuant to Section 2(c) being hereafter referred to as the “Vesting Date”). The price at which the RSUs shall vest is the fair market value of Company stock at closing on the business day prior to the Vesting Date. Shares shall be delivered based upon vesting of RSUs pursuant to and subject to Section3 below.

(b)Earning of RSUs. The RSUs shall be earned based upon the financial performance of the Company or the Bank, or both (as the case may be), during the fiscal year in which the Grant Date occurs (the “Fiscal Year”) as set forth in Exhibit A (the “Performance Targets”). The Committee shall determine whether the RSUs have been earned based upon the Performance Targets at its first meeting (the date of such meeting, the “Measurement Date”) after financial statements for the Company or the Bank, or both (as the case may be), are available for the Fiscal Year, and the Company shall advise the Participant as soon as practicable thereafter of the number of RSUs that have been earned; provided, however, that no RSUs shall become earned if there exists as of the Measurement Date, as determined by the Committee, a material weakness (a “Material Weakness”) in safety, soundness or compliance (e.g., a regulatory memorandum of understanding, or a material weakness in internal control over financial reporting) at the Company level (with respect to RSUs to be earned based upon Company Performance Targets) or the Bank level (with respect to RSUs to be earned based upon Bank Performance Targets); provided, however, that RSUs that would have become earned on the Measurement Date but for the Material Weakness shall not be forfeited, but instead may become earned if the Material Weakness has been remediated in its entirety prior to the Vesting Date. In determining whether the RSUs have been earned based upon the Performance Targets, the Committee shall consider the effects of the following items, to the extent identified in the audited financial statements of the Company or the Bank (as the case may be), or in the Management Discussion and Analysis section of the Company’s annual report provided to its stockholders: (i) extraordinary, unusual or nonrecurring items of gain or loss, (ii) gains or losses on the disposition of a business, (iii) changes in tax or accounting principles, regulations or laws or (iv) mergers or acquisitions.

(c)Forfeiture and Special Vesting of RSUs. Notwithstanding the foregoing provisions of 0(b):

(i)Any RSUs that have not been earned as of the Measurement Date based upon failure to meet the Performance Targets shall expire and be forfeited on, and as of, the Measurement Date.

(ii)Any RSUs that have not been earned as of the Vesting Date based upon failure to remediate a Material Weakness shall expire and be forfeited on, and as of, the Vesting Date.

(iii)If a Participant’s Termination of Service occurs due to termination of the Participant’s employment by the Participant’s employer without Cause, any earned RSUs held by the Participant shall become vested on the date of Termination of Service, and any unearned RSUs held by the Participant shall expire and shall be forfeited as of the date of employment termination. For the avoidance of doubt, if such Termination of Service occurs before the Measurement Date, all RSUs shall expire and be forfeited. Any RSUs that are not earned solely because of a Material Weakness shall remain outstanding until remediation of such Material Weakness prior to the Vesting Date (when such RSUs shall vest) or until the Vesting Date (when such RSUs shall expire and be forfeited).

(iv)If a Participant’s Termination of Service occurs on or after the Measurement Date due to the Participant’s Disability or death, any earned RSUs held by the Participant shall become vested on the date of Termination of Service. If a Participant’s Termination of Service occurs prior to the Measurement Date due to the Participant’s Disability or death, then the RSUs shall continue to remain outstanding until the Measurement Date and shall become vested, to the extent earned, as of and on the Measurement Date. Any RSUs that are not earned solely because of a Material Weakness shall remain outstanding until remediation of such Material Weakness prior to the Vesting Date (when such RSUs shall vest) or until the Vesting Date (when such RSUs shall expire and be forfeited).

(v)If the Participant’s Termination of Service occurs due to termination of the Participant’s employment by the Participant’s employer for Cause or by the Participant voluntarily (other than due to Qualifying Retirement), the Participant shall forfeit all RSUs (whether or not earned).

(vi)If the Participant’s Termination of Service occurs due to a Qualifying Retirement, (1) prior to the Measurement Date, then the RSUs shall continue to remain outstanding until the Measurement Date and shall become vested, to the extent earned, as of and on the Measurement Date, (2) on or after the Measurement Date, then to the extent earned, the RSUs shall become vested on the date of such Termination of Service due to Qualifying Retirement, and (3) there is or was a Material Weakness on the Measurement Date, then the portion of the RSUs that are not earned because of such Material Weakness shall remain outstanding until remediation of the Material Weakness (when such RSUs shall vest) or until the Vesting Date (when such RSUs shall expire and be forfeited). For such purposes, a “Qualifying Retirement” means a voluntary Termination of Services by the Participant on or after the date the Participant reaches the age of 62, and provided that (A) the Participant has provided at least five (5) years of full-time equivalent services to the Company or a Subsidiary through the date of such Termination of Services; (B) the Participant covenants that the Participant shall not engage in any full-time employment with any entity thereafter (although Participant shall be entitled to engage in part-time employment, including services as a member of a board of directors or similar body, with an entity that does not compete with the Company or any Subsidiary) unless such employment has been approved in writing by the Chair of the Committee;(C) the Participant executes a general release and waiver of claims against the Company at the time of such Termination of Services; and (D) the Participant executes a confidentiality, non-solicitation, and non-competition agreement with the Company at the time of such Termination of Service.  Consistent with Section 5.2 of the Plan, any question regarding whether a voluntary Termination of Service constitutes a Qualifying Retirement shall be determined by the Committee and the decision of the Committee shall be final and binding upon the Participant.

(vii)Immediately upon a Change in Control, if the obligations under this Agreement are not assumed by the Company or its successor in such Change in Control, all RSUs that have not been previously forfeited shall become vested as if the Company had achieved 100% of the Performance Targets immediately prior to the Change in Control. Otherwise, if the obligations under this Agreement are assumed by the Company or its successor in such Change in Control, and if a Participant’s employment by the Company or Bank or successor of the Company or Bank shall become subject to a Termination of Service within the period beginning six months prior to a Change in Control and ending 24 months after a Change in Control, all RSUs then held by the Participant shall become vested as if the Company had achieved 100% of the Performance Targets immediately prior to the Change in Control, upon the later to occur of the Termination of Service or Change in Control. The foregoing provisions are subject to any forfeiture and expiration provisions otherwise applicable to the RSUs.

Section 3.Settlement of RSUs. Delivery of Shares or other amounts under this Agreement shall be subject to the following:

(a)Delivery of Shares. The Company shall deliver to the Participant one Share, free and clear of any restrictions, in settlement of each vested RSU within 30 days following the Vesting Date.

(b)Compliance with Applicable Laws. Notwithstanding any other term of this Agreement or the Plan, the Company shall have no obligation to deliver any Shares or make any other distribution of benefits under this Agreement unless such delivery or distribution complies with all applicable laws and the applicable rules of any securities exchange or similar entity.

(c)Certificates Not Required. To the extent that this Agreement and the Plan provide for the issuance of Shares, such issuance may be effected on a non-certificated basis, to the extent not prohibited by applicable law or the applicable rules of any securities exchange or similar entity.

Section 4.Withholding. All deliveries of Shares pursuant to this Agreement shall be subject to withholding of all applicable taxes. The Company shall have the right to require the Participant (or if applicable, permitted assigns, heirs and Designated Beneficiaries) to remit to the Company an amount sufficient to satisfy any tax requirements prior to the delivery date of any Shares in connection with this Agreement.  Except as may be provided otherwise by the Committee, such withholding obligations may be satisfied at the election of the Participant (a) through debit of a deposit account held by the Participant at a bank affiliated with the Company, or (b) through the surrender of Shares to which the Participant is otherwise entitled under the Plan; provided, however, that except as otherwise specifically provided by the Committee, such Shares under clause (b) may not be used to satisfy more than the Company’s minimum statutory withholding obligation.

Section 5.Non-Transferability of RSUs. Neither the RSUs awarded pursuant to this Agreement, nor any portion thereof, shall be transferable, except as designated by the Participant by will or by the laws of descent and distribution or pursuant to a domestic relations order. Except as provided in the immediately preceding sentence, this Agreement shall not be assigned, transferred, pledged, hypothecated or otherwise disposed of by the Participant in any way whether by operation of law or otherwise, and shall not be subject to execution, attachment or similar process.  Any attempt at assignment, transfer, pledge, hypothecation or other disposition of this Agreement contrary to the provisions hereof, or the levy of any attachment or similar process upon this Agreement or the RSUs it represents, shall be null and void and without effect.

Section 6.No Rights as Stockholder. The Participant shall not have any rights of a stockholder of the Company with respect to the RSUs, including but not limited to, dividend or voting rights, prior to the settlement of the RSUs pursuant to Section 3(a) above and issuance of a stock certificate or its equivalent as provided herein.

Section 7.Heirs and Successors. This Agreement shall be binding upon, and inure to the benefit of, the Company and its successors and assigns, and upon any person acquiring all or substantially all of the Company’s assets or business. If any rights of the Participant or benefits distributable to the Participant under this Agreement have not been settled or distributed at the time of the Participant’s death and have not been designated to pass to a certain beneficiary, such rights shall be provided to the legal representative of the estate of the Participant.

Section 8.Administration. The authority to manage and control the operation and administration of this Agreement and the Plan shall be vested in the Committee, and the Committee shall have all powers with respect to this Agreement as it has with respect to the Plan. Any interpretation of this Agreement or the Plan by the Committee and any decision made by the Committee with respect to this Agreement or the Plan shall be final and binding on all persons.

Section 9.Plan Governs. Notwithstanding anything in this Agreement to the contrary, this Agreement shall be subject to the terms of the Plan, a copy of which may be obtained by the Participant from the Human Resources Department of the Company. This Agreement shall be subject to all interpretations, amendments, rules and regulations promulgated by the Committee from time to time. Notwithstanding any term of this Agreement to the contrary, in the event of any discrepancy between the corporate records of the Company and this Agreement, the corporate records of the Company shall control.

Section 10.Not an Employment Contract. Neither the RSUs granted under this Agreement nor this Agreement shall confer upon the Participant any rights with respect to continuance of employment or other service with the Company or a Subsidiary, nor shall they interfere in any way with any right the Company or a Subsidiary may otherwise have to terminate or modify the terms of the Participant’s employment or other service at any time.

Section 11.Amendment. Without limitation of Section 14 and Section 15 below, this Agreement may be amended in accordance with the provisions of the Plan, and may otherwise be amended in writing by the Participant and the Company without the consent of any other person.

Section 12.Governing Law. This Agreement, the Plan and all actions taken in connection herewith and therewith shall be governed by and construed in accordance with the laws of the State of Delaware, without reference to principles of conflict of laws, except as superseded by applicable federal law.

Section 13.Validity. If any provision of this Agreement is determined to be illegal or invalid for any reason, said illegality or invalidity shall not affect the remaining parts hereof, but this Agreement shall be construed and enforced as if such illegal or invalid provision had never been included herein.

Section 14.Section 409A Amendment. This Agreement is intended to be exempt from Code Section 409A and this Agreement shall be administered and interpreted in accordance with such intent. The Committee reserves the right (including the right to delegate such right) to unilaterally amend this Agreement without the consent of the Participant in order to maintain an exclusion from the application of, or to maintain compliance with, Code Section 409A; and the Participant hereby acknowledges and consents to such rights of the Committee.

Section 15.Clawback. This Agreement, the RSUs and any Shares issued under this Agreement, and any amount or benefit received under the Plan, shall be subject to potential cancellation, recoupment, rescission, payback or other action in accordance with the terms of any applicable Company or Subsidiary clawback policy (the “Policy”) or any applicable law, as may be in effect from time to time. The Participant hereby acknowledges and consents to the Company’s or a Subsidiary’s application, implementation and enforcement of (a) the Policy and any similar policy established by the Company or a Subsidiary that may apply to the Participant, whether adopted prior to or following the date of this Agreement, and (b) any provision of applicable law relating to cancellation, rescission, payback or recoupment of compensation, and agrees that the Company or a Subsidiary may take such actions as may be necessary to effectuate the Policy, any similar policy and applicable law, without further consideration or action.

*    *    *    *    *

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed in its name and on its behalf, and the Participant acknowledges understanding and acceptance of, and agrees to, the terms of this Agreement, all as of the Grant Date. This Agreement and any amendments or supplements hereto may be executed in counterparts, each of which shall constitute an original, but taken together shall constitute a single contract.  Signature may be in electronic format, including by electronic acknowledgement.

HEARTLAND FINANCIAL USA, INC.

By:

Print Name:     Lynn B. Fuller

Print Title:    Chairman and CEO

PARTICIPANT

By:     Via Electronic Acknowledgment

Print Name:

EXHIBIT A

Performance Targets

EX-10.3

Heartland Financial USA, Inc.

2012 Long-Term Incentive Plan

2018 Performance-Based Restricted Stock Unit Award Agreement

Three-Year Performance Period

The Participant specified below is hereby granted a performance-based restricted stock unit award by Heartland Financial USA, Inc. (the “Company”) under the Heartland Financial USA, Inc. 2012 Long-Term Incentive Plan (the “Plan”). The restricted stock units awarded by this Award Agreement (this “Agreement”) shall be subject to the terms of the Plan and the terms set forth in this Agreement. All capitalized terms used in this Agreement and not otherwise defined have the meaning assigned to them in the Plan.

Section 1.Award. The Company hereby grants to the Participant an award of restricted stock units (each such unit, an “RSU”), where each RSU represents the right of the Participant to receive one share of Company stock (“Share”) in the future, subject to the terms of this Agreement and the Plan. For all purposes of this Agreement:

The “Participant” is:     _________________________                    .

The “Grant Date” is:     _________________________                         

The number of RSUs is:     _________________________

.

Section 2.Vesting of RSUs.

(a)Vesting. To the extent earned in accordance with Section 2(b), and subject to forfeiture prior to vesting in accordance with Section 2(c), the RSUs shall vest on the Measurement Date (as defined in Section 2(b)) or such earlier date pursuant to Section 2(c). Shares shall be delivered based upon vesting of RSUs pursuant to and subject to Section3 below.

(b)Earning of RSUs. The RSUs shall be earned based upon the financial performance of the Company as set forth in Exhibit A (the “Performance Targets”) during the three fiscal years commencing with the fiscal year in which the Grant Date occurs (the “Three-Year Performance Period”). The Committee shall determine whether the RSUs have been earned based upon the Performance Targets at its first meeting (the date of such meeting, the “Measurement Date”) after measurement of performance in relation to the Performance Targets is attainable for the last fiscal year of the Three-Year Performance Period, and the Company shall advise the Participant as soon as practicable thereafter of the number of RSUs that have been earned; provided, however, that no RSUs shall become earned if there exists as of the Measurement Date, as determined by the Committee, a material weakness (a “Material Weakness”) in the safety, soundness or compliance (e.g., a regulatory memorandum of understanding, or a material weakness in internal control over financial reporting) of the Company. In determining whether the RSUs have been earned based upon the Performance Targets, the Committee shall consider the effects of the following items, to the extent identified in the audited financial statements of the Company as of and for the fiscal years ended during the Three-Year Performance Period, or in the Management Discussion and Analysis section of the Company’s annual reports made available to its stockholders during the Three-Year Performance Period: (i) extraordinary, unusual or nonrecurring items of gain or loss, (ii) gains or losses on the disposition of a business, (iii) changes in tax or accounting principles, regulations or laws or (iv) mergers or acquisitions.

(c)Forfeiture and Special Vesting of RSUs. Notwithstanding the foregoing provisions of Section 2(b):

(i)Any RSUs that have not been earned as of the Measurement Date based upon failure to meet the Performance Targets shall expire and be forfeited on, and as of, the Measurement Date.

(ii)Any RSUs that have not been earned as of the Measurement Date based upon failure to remediate a Material Weakness shall expire and be forfeited on, and as of, the Measurement Date.

(iii)If a Participant’s Termination of Service occurs prior to the Measurement Date due to termination of the Participant’s employment by the Participant’s employer (with or without Cause) or by the Participant voluntarily

(other than due to Qualifying Retirement), any RSUs held by the Participant shall expire and shall be forfeited as of the date of employment termination.

(iv)If a Participant’s Termination of Service occurs prior to the Measurement Date due to the Participant’s Disability or death, then the RSUs shall continue to remain outstanding until the Measurement Date and shall become vested, to the extent earned, as of and on the Measurement Date.

(v)If the Participant’s Termination of Service occurs prior to the Measurement Date due to a Qualifying Retirement, then the RSUs shall continue to remain outstanding until the Measurement Date and shall become vested, to the extent earned, as of and on the Measurement Date. For such purposes, a “Qualifying Retirement” means a voluntary Termination of Services by the Participant on or after the date the Participant reaches the age of 62, and provided that (A) the Participant has provided at least five (5) years of full-time equivalent services to the Company or a Subsidiary through the date of such Termination of Services; (B) the Participant covenants that the Participant shall not engage in any full-time employment with any entity thereafter (although Participant shall be entitled to engage in part-time employment, including services as a member of a board of directors or similar body, with an entity that does not compete with the Company or any Subsidiary) unless such employment has been approved in writing by the Chair of the Committee;(C) the Participant executes a general release and waiver of claims against the Company at the time of such Termination of Services; and (D) the Participant executes a confidentiality, non-solicitation, and non-competition agreement with the Company at the time of such Termination of Service.  Consistent with Section 5.2 of the Plan, any question regarding whether a voluntary Termination of Service constitutes a Qualifying Retirement shall be determined by the Committee and the decision of the Committee shall be final and binding upon the Participant.

(vi)Immediately upon a Change in Control, if the obligations under this Agreement are not assumed by the Company or its successor in such Change in Control, all RSUs that have not been previously forfeited shall become vested as if the Company had achieved 100% of the Performance Targets immediately prior to the Change in Control. Otherwise, if the obligations under this Agreement are assumed by the Company or its successor in such Change in Control, and if a Participant’s employment by the Company or Bank or successor of the Company or Bank shall become subject to a Termination of Service within the period beginning six months prior to a Change in Control and ending 24 months after a Change in Control, all RSUs then held by the Participant shall become vested as if the Company had achieved 100% of the Performance Targetsimmediately prior to the Change in Control, upon the later to occur of the Termination of Service or Change in Control. The foregoing provisions are subject to any forfeiture and expiration provisions otherwise applicable to the RSUs.

Section 3.Settlement of RSUs. Delivery of Shares or other amounts under this Agreement shall be subject to the following:

(a)Delivery of Shares. The Company shall deliver to the Participant one Share, free and clear of any restrictions, in settlement of each vested RSU within 30 days following the Measurement Date.

(b)Compliance with Applicable Laws. Notwithstanding any other term of this Agreement or the Plan, the Company shall have no obligation to deliver any Shares or make any other distribution of benefits under this Agreement unless such delivery or distribution complies with all applicable laws and the applicable rules of any securities exchange or similar entity.

(c)Certificates Not Required. To the extent that this Agreement and the Plan provide for the issuance of Shares, such issuance may be effected on a non-certificated basis, to the extent not prohibited by applicable law or the applicable rules of any securities exchange or similar entity.

Section 4.Withholding. All deliveries of Shares pursuant to this Agreement shall be subject to withholding of all applicable taxes. The Company shall have the right to require the Participant (or if applicable, permitted assigns, heirs and Designated Beneficiaries) to remit to the Company an amount sufficient to satisfy any tax requirements prior to the delivery date of any Shares in connection with this Agreement.  Except as may be provided otherwise by the Committee, such withholding obligations may be satisfied at the election of the Participant (a) through debit of a deposit account held by the Participant at a bank affiliated with the Company, or (b) through the surrender of Shares to which the Participant is otherwise entitled under the Plan; provided, however, that except as otherwise specifically provided by the Committee, such Shares under clause (b) may not be used to satisfy more than the Company’s minimum statutory withholding obligation.

Section 5.Non-Transferability of RSUs. Neither the RSUs awarded pursuant to this Agreement, nor any portion thereof, shall be transferable, except as designated by the Participant by will or by the laws of descent and distribution or pursuant to a domestic relations order. Except as provided in the immediately preceding sentence, this Agreement shall not be assigned, transferred, pledged, hypothecated or otherwise disposed of by the Participant in any way whether by operation of law or otherwise, and shall not be subject to execution, attachment or similar process.  Any attempt at assignment, transfer, pledge, hypothecation

or other disposition of this Agreement contrary to the provisions hereof, or the levy of any attachment or similar process upon this Agreement or the RSUs it represents, shall be null and void and without effect.

Section 6.No Rights as Stockholder. The Participant shall not have any rights of a stockholder of the Company with respect to the RSUs, including but not limited to, dividend or voting rights, prior to the settlement of the RSUs pursuant to Section 3(a) above and issuance of a stock certificate or its equivalent as provided herein.

Section 7.Heirs and Successors. This Agreement shall be binding upon, and inure to the benefit of, the Company and its successors and assigns, and upon any person acquiring all or substantially all of the Company’s assets or business. If any rights of the Participant or benefits distributable to the Participant under this Agreement have not been settled or distributed at the time of the Participant’s death and have not been designated to pass to a certain beneficiary, such rights shall be provided to the legal representative of the estate of the Participant.

Section 8.Administration. The authority to manage and control the operation and administration of this Agreement and the Plan shall be vested in the Committee, and the Committee shall have all powers with respect to this Agreement as it has with respect to the Plan. Any interpretation of this Agreement or the Plan by the Committee and any decision made by the Committee with respect to this Agreement or the Plan shall be final and binding on all persons.

Section 9.Plan Governs. Notwithstanding anything in this Agreement to the contrary, this Agreement shall be subject to the terms of the Plan, a copy of which may be obtained by the Participant from the Human Resources Department of the Company. This Agreement shall be subject to all interpretations, amendments, rules and regulations promulgated by the Committee from time to time. Notwithstanding any term of this Agreement to the contrary, in the event of any discrepancy between the corporate records of the Company and this Agreement, the corporate records of the Company shall control.

Section 10.Not an Employment Contract. Neither the RSUs granted under this Agreement nor this Agreement shall confer upon the Participant any rights with respect to continuance of employment or other service with the Company or a Subsidiary, nor shall they interfere in any way with any right the Company or a Subsidiary may otherwise have to terminate or modify the terms of the Participant’s employment or other service at any time.

Section 11.Amendment. Without limitation of Section 14 and Section 15 below, this Agreement may be amended in accordance with the provisions of the Plan, and may otherwise be amended in writing by the Participant and the Company without the consent of any other person.

Section 12.Governing Law. This Agreement, the Plan and all actions taken in connection herewith and therewith shall be governed by and construed in accordance with the laws of the State of Delaware, without reference to principles of conflict of laws, except as superseded by applicable federal law.

Section 13.Validity. If any provision of this Agreement is determined to be illegal or invalid for any reason, said illegality or invalidity shall not affect the remaining parts hereof, but this Agreement shall be construed and enforced as if such illegal or invalid provision had never been included herein.

Section 14.Section 409A Amendment. This Agreement is intended to be exempt from Code Section 409A and this Agreement shall be administered and interpreted in accordance with such intent. The Committee reserves the right (including the right to delegate such right) to unilaterally amend this Agreement without the consent of the Participant in order to maintain an exclusion from the application of, or to maintain compliance with, Code Section 409A; and the Participant hereby acknowledges and consents to such rights of the Committee.

Section 15.Clawback. This Agreement, the RSUs and any Shares issued under this Agreement, and any amount or benefit received under the Plan, shall be subject to potential cancellation, recoupment, rescission, payback or other action in accordance with the terms of any applicable Company or Subsidiary clawback policy (the “Policy”) or any applicable law, as may be in effect from time to time. The Participant hereby acknowledges and consents to the Company’s or a Subsidiary’s application, implementation and enforcement of (a) the Policy and any similar policy established by the Company or a Subsidiary that may apply to the Participant, whether adopted prior to or following the date of this Agreement, and (b) any provision of applicable law relating to cancellation, rescission, payback or recoupment of compensation, and agrees that the Company or a Subsidiary may take such actions as may be necessary to effectuate the Policy, any similar policy and applicable law, without further consideration or action.

*    *    *    *    *

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed in its name and on its behalf, and the Participant acknowledges understanding and acceptance of, and agrees to, the terms of this Agreement, all as of the Grant Date. This Agreement and any amendments or supplements hereto may be executed in counterparts, each of which shall constitute an original, but taken together shall constitute a single contract. Signature may be in electronic format, including by electronic acknowledgement.

HEARTLAND FINANCIAL USA, INC.

By:

Print Name: Lynn B. Fuller

Print Title: Chairman and CEO

PARTICIPANT

By: Via Electronic Acknowledgment

Print Name:

EXHIBIT A

Performance Targets

EX-31.1

EXHIBIT 31.1

I, Lynn B. Fuller, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Heartland Financial USA, 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 internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter 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 registrant's board of directors (or persons performing the equivalent function):
	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 8, 2018
/s/ Lynn B. Fuller
Lynn B. Fuller
Chief Executive Officer

EX-31.2

EXHIBIT 31.2

I, Bryan R. McKeag, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Heartland Financial USA, 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 internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
	c)	Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter 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 registrant's board of directors (or persons performing the equivalent function):
	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 8, 2018
/s/ Bryan R. McKeag
Bryan R. McKeag
Executive Vice President
Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Heartland Financial USA, Inc. (the “Company”) on Form 10-Q for the quarter ending March 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report), I, Lynn B. Fuller, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Lynn B. Fuller
Lynn B. Fuller
Chief Executive Officer
Date:	May 8, 2018

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Heartland Financial USA, Inc. (the “Company”) on Form 10-Q for the quarter ending March 31,2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report), I, Bryan R. McKeag, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Bryan R. McKeag
Bryan R. McKeag
Executive Vice President
Chief Financial Officer
Date:	May 8, 2018

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 07, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	HEARTLAND FINANCIAL USA INC
Entity Central Index Key	0000920112
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		31,068,676

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 143,071	$ 168,723
Interest bearing deposits with the Federal Reserve Bank and other banks and other short-term investments	123,275	27,280
Cash and cash equivalents	266,346	196,003
Time deposits in other financial institutions	6,297	9,820
Securities:
Available for sale, at fair value (cost of $2,080,514 at March 31, 2018, and $2,248,181 at December 31, 2017)	2,027,665	2,216,753
Held to maturity, at cost (fair value of $258,638 at March 31, 2018, and $265,494 at December 31, 2017)	249,766	253,550
Other investments, at cost	22,982	22,563
Loans held for sale	24,376	44,560
Loans receivable:
Held to maturity	6,746,015	6,391,464
Allowance for loan and lease losses	(58,656)	(55,686)
Loans receivable, net	6,687,359	6,335,778
Premises, furniture and equipment, net	171,385	172,324
Premises, furniture and equipment held for sale	1,477	1,977
Other real estate, net	11,801	10,777
Goodwill	270,305	236,615
Core deposit intangibles and customer relationship intangibles, net	41,063	35,203
Servicing rights, net	25,471	25,857
Cash surrender value on life insurance	143,444	142,818
Other assets	106,126	106,141
TOTAL ASSETS	10,055,863	9,810,739
Deposits:
Demand	3,094,457	2,983,128
Savings	4,536,106	4,240,328
Time	910,977	923,453
Total deposits	8,541,540	8,146,909
Short-term borrowings	131,240	324,691
Other borrowings	276,118	285,011
Accrued expenses and other liabilities	55,460	62,671
TOTAL LIABILITIES	9,004,358	8,819,282
STOCKHOLDERS' EQUITY:
Common stock (par value $1 per share; 40,000,000 shares authorized at both March 31, 2018, and December 31, 2017; issued 31,068,239 shares at March 31, 2018, and 29,953,356 shares at December 31, 2017)	31,068	29,953
Capital surplus	557,990	503,709
Retained earnings	500,959	481,331
Accumulated other comprehensive loss	(39,450)	(24,474)
Treasury stock at cost (0 shares at both March 31, 2018, and December 31, 2017)	0	0
TOTAL STOCKHOLDERS' EQUITY	1,051,505	991,457
TOTAL LIABILITIES AND EQUITY	10,055,863	9,810,739
Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series A Junior Participating Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series C Senior Non-Cumulative Perpetual Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series D Senior Non-Cumulative Perpetual Preferred Stock
STOCKHOLDERS' EQUITY:
Preferred stock	$ 938	$ 938

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Cost of available for sale securities	$ 2,080,514	$ 2,248,181
Fair value of held to maturity securities	$ 258,638	$ 265,494
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	40,000,000	30,000,000
Common stock, shares issued (in shares)	31,068,239	29,953,356
Treasury stock (in shares)	0	0
Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	17,604	17,604
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series A Junior Participating Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	16,000	16,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series C Senior Non-Cumulative Perpetual Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	81,698	81,698
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series D Senior Non-Cumulative Perpetual Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	3,000	3,000
Preferred stock, shares issued (in shares)	745	745
Preferred stock, shares outstanding (in shares)	745	745

XML

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST INCOME:
Interest and fees on loans	$ 85,651	$ 66,898
Interest on securities:
Taxable	11,577	8,253
Nontaxable	3,579	5,191
Interest on federal funds sold	0	0
Interest on interest bearing deposits in other financial institutions	407	209
TOTAL INTEREST INCOME	101,214	80,551
INTEREST EXPENSE:
Interest on deposits	5,766	3,730
Interest on short-term borrowings	268	137
Interest on other borrowings	3,596	3,656
TOTAL INTEREST EXPENSE	9,630	7,523
NET INTEREST INCOME	91,584	73,028
Provision for loan losses	4,263	3,641
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	87,321	69,387
NONINTEREST INCOME:
Service charges and fees	10,079	9,457
Loan servicing income	1,754	1,724
Trust fees	4,680	3,631
Brokerage and insurance commissions	907	1,036
Securities gains, net	1,441	2,482
Unrealized loss on equity securities, net	(28)	0
Net gains on sale of loans held for sale	4,051	6,147
Valuation allowance on commercial servicing rights	(2)	5
Income on bank owned life insurance	614	617
Other noninterest income	1,220	794
TOTAL NONINTEREST INCOME	24,716	25,893
NONINTEREST EXPENSES:
Salaries and employee benefits	48,710	41,767
Occupancy	6,043	5,073
Furniture and equipment	2,749	2,501
Professional fees	8,459	8,309
FDIC insurance assessments	989	807
Advertising	1,940	2,424
Core deposit intangibles and customer relationship intangibles amortization	1,863	1,171
Other real estate and loan collection expenses	732	828
(Gain)/loss on sales/valuations of assets, net	(197)	412
Restructuring expenses	2,564	0
Other noninterest expenses	9,794	8,448
TOTAL NONINTEREST EXPENSES	83,646	71,740
INCOME BEFORE INCOME TAXES	28,391	23,540
Income taxes	5,123	5,530
NET INCOME	23,268	18,010
Preferred dividends	(13)	(19)
Interest expense on convertible preferred debt	0	5
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 23,255	$ 17,996
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 0.76	$ 0.68
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	0.76	0.68
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.13	$ 0.11

XML

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest expense related to derivatives reclassified from accumulated other comprehensive income	$ 3,596	$ 3,656
Net security gains reclassified from accumulated other comprehensive income	1,441	2,482
Income tax expense reclassified from accumulated other comprehensive income	5,123	5,530
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Derivatives
Interest expense related to derivatives reclassified from accumulated other comprehensive income	197	397
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)
Net security gains reclassified from accumulated other comprehensive income	1,441	2,482
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income (Loss)
Income tax expense reclassified from accumulated other comprehensive income	$ 261	$ 778

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 23,268	$ 18,010
Securities:
Net change in unrealized gain (loss) on securities	(19,834)	5,379
Reclassification adjustment for net gains realized in net income	(1,441)	(2,482)
Income taxes	5,391	(1,111)
Other comprehensive income (loss) on securities	(15,884)	1,786
Derivatives used in cash flow hedging relationships:
Net change in unrealized gain on derivatives	1,699	136
Reclassification adjustment for net losses on derivatives realized in net income	197	397
Income taxes	(708)	(215)
Other comprehensive income on cash flow hedges	1,188	318
Other comprehensive income (loss)	(14,696)	2,104
TOTAL COMPREHENSIVE INCOME	$ 8,572	$ 20,114

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 23,268	$ 18,010
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,802	7,023
Provision for loan losses	4,263	3,641
Net amortization of premium on securities	5,823	7,226
Securities gains, net	(1,441)	(2,482)
Unrealized loss on equity securities, net	28	0
Stock based compensation	1,858	1,782
Loans originated for sale	(112,433)	(164,324)
Proceeds on sales of loans held for sale	135,506	180,404
Net gains on sale of loans held for sale	(2,889)	(3,828)
Decrease in accrued interest receivable	3,239	93
Decrease in prepaid expenses	194	84
Increase in accrued interest payable	1,029	825
Capitalization of servicing rights	(1,183)	(2,226)
Valuation allowance on commercial servicing rights	2	(5)
(Gain)/loss on sales/valuations of assets, net	(197)	412
Net excess tax benefit from stock based compensation	611	888
Other, net	(5,441)	(13,767)
NET CASH PROVIDED BY OPERATING ACTIVITIES	59,039	33,756
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of securities available for sale	392,246	221,637
Proceeds from the redemption of time deposits in other financial institutions	8,767	5,867
Proceeds from the maturity of and principal paydowns on securities available for sale	49,603	47,515
Proceeds from the maturity of and principal paydowns on securities held to maturity	3,570	2,823
Proceeds from the maturity of and principal paydowns on time deposits in other financial institutions	4,368	3,185
Proceeds from the maturity of and principal paydowns on other investments	677	1,521
Purchase of securities available for sale	(244,289)	(312,769)
Purchase of other investments	(644)	(968)
Net (increase) decrease in loans	(32,314)	80,916
Capital expenditures	(2,356)	(3,588)
Net cash and cash equivalents received in acquisitions	5,543	33,698
Proceeds from the sale of equipment	615	3
Proceeds on sale of OREO and other repossessed assets	668	585
NET CASH PROVIDED BY INVESTING ACTIVITIES	186,454	80,425
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in demand deposits	5,834	22,799
Net increase in savings deposits	100,608	88,767
Net decrease in time deposit accounts	(69,143)	(50,612)
Proceeds on short-term revolving credit line	15,000	0
Net decrease in short-term borrowings	(168,451)	(131,068)
Proceeds from short term FHLB advances	220,000	60,939
Repayments of short term FHLB advances	(260,000)	(81,305)
Repayments of other borrowings	(14,995)	(6,432)
Purchase of treasury stock	(97)	(160)
Proceeds from issuance of common stock	14	218
Dividends paid	(3,920)	(2,900)
NET CASH USED BY FINANCING ACTIVITIES	(175,150)	(99,754)
Net increase in cash and cash equivalents	70,343	14,427
Cash and cash equivalents at beginning of year	196,003	158,724
CASH AND CASH EQUIVALENTS AT END OF PERIOD	266,346	173,151
Supplemental disclosures:
Cash paid for income/franchise taxes	2	5
Cash paid for interest	8,601	6,698
Loans transferred to OREO	939	2,680
Purchases of securities available for sale, accrued, not settled	0	3,654
Conversion of convertible debt to common stock	0	167
Conversion of Series D preferred stock to common stock	0	419
Stock consideration granted for acquisitions	$ 53,621	$ 22,589

XML

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock	Preferred Stock Series D Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at beginning of period at Dec. 31, 2016	$ 740,916	$ 1,357		$ 26,120	$ 328,376	$ 416,109	$ (31,046)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	20,114					18,010	2,104
Cash dividends declared:
Preferred	(19)					(19)
Common	(2,881)					(2,881)
Conversion of Series D preferred stock	(419)		$ (419)
Purchase of shares of common stock	(160)							(160)
Issuance of shares of common stock	21,979			554	21,265			160
Stock based compensation	1,782				1,782
Balance at end of period at Mar. 31, 2017	781,312	938		26,674	351,423	431,219	(28,942)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of unrealized net gain on equity securities	0					(280)	(280)
Balance at beginning of period at Dec. 31, 2017	991,457	938		29,953	503,709	481,331	(24,474)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	8,572					23,268	(14,696)
Cash dividends declared:
Preferred	(13)					(13)
Common	(3,907)					(3,907)
Purchase of shares of common stock	(97)							(97)
Issuance of shares of common stock	53,635			1,115	52,423			97
Stock based compensation	1,858				1,858
Balance at end of period at Mar. 31, 2018	$ 1,051,505	$ 938		$ 31,068	$ 557,990	$ 500,959	$ (39,450)	$ 0

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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash dividends per share common stock (in dollars per share)	$ 0.13	$ 0.11
Shares of common stock purchased (in shares)	1,761	3,338
Shares of common stock issued (in shares)	1,116,644	557,530
Series D Preferred Stock
Cash dividends per share preferred stock (in dollars per share)	$ 17.50	$ 17.50

XML

Basis of Presentation

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

BASIS OF PRESENTATION

The interim unaudited consolidated financial statements contained herein should be read in conjunction with the audited consolidated financial statements and accompanying notes to the consolidated financial statements for the fiscal year ended December 31, 2017, included in the Form 10-K of Heartland Financial USA, Inc. ("Heartland") filed with the Securities and Exchange Commission ("SEC") on February 28, 2018. Footnote disclosures to the interim unaudited consolidated financial statements which would substantially duplicate the disclosure contained in the footnotes to the audited consolidated financial statements have been omitted.

The financial information of Heartland included herein has been prepared in accordance with U.S. generally accepted accounting principles for interim financial reporting and has been prepared pursuant to the rules and regulations for reporting on Form 10-Q and Rule 10-01 of Regulation S-X. Such information reflects all adjustments (consisting of normal recurring adjustments), that are, in the opinion of management, necessary for a fair presentation of the financial position and results of operations for the periods presented. The results of the interim period ended March 31, 2018, are not necessarily indicative of the results expected for the year ending December 31, 2018.

In the Annual Report on Form 10-K for the year ended December 31, 2017, Heartland reported the results of operations through two business segments: Community and Other Banking and Mortgage Banking. Effective January 1, 2018, the recently restructured mortgage banking segment is no longer a reportable segment due to the significant reduction in infrastructure and the reporting structure of the mortgage sales staff, who currently report directly to the bank president in each market. Accordingly, Heartland is no longer reporting results of operations by segment.

Earnings Per Share

Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued. Amounts used in the determination of basic and diluted earnings per share for the three-month periods ended March 31, 2018, and 2017, are shown in the table below:

	Three Months Ended March 31,
(Dollars and number of shares in thousands, except per share data)	2018			2017
Net income	$	23,268		$	18,010
Preferred dividends	(13		)	(19		)
Interest expense on convertible preferred debt	—			5
Net income available to common stockholders	$	23,255		$	17,996
Weighted average common shares outstanding for basic earnings per share	30,442			26,335
Assumed incremental common shares issued upon non-vested restricted stock units	203			293
Weighted average common shares for diluted earnings per share	30,645			26,628
Earnings per common share — basic	$	0.76		$	0.68
Earnings per common share — diluted	$	0.76		$	0.68
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	—			—

Stock-Based Compensation

Heartland may grant, through its Nominating and Compensation Committee (the "Compensation Committee"), non-qualified and incentive stock options, stock appreciation rights, stock awards, restricted stock, restricted stock units and cash incentive awards, under its 2012 Long-Term Incentive Plan (the "Plan"). The Plan was originally approved by stockholders in May 2012 and was amended effective March 8, 2016, to increase the number of shares of common stock authorized for issuance and make certain other changes to the Plan. As of March 31, 2018, 459,893 shares of common stock were available for issuance under future awards that may be granted under the Plan to employees and directors of, and service providers to, Heartland or its subsidiaries.

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 718, "Compensation-Stock Compensation" requires the measurement of the cost of employee services received in exchange for an award of equity instruments based upon the fair value of the award on the grant date. The cost of the award is based upon its fair value estimated on the date of grant and recognized in the consolidated statements of income over the vesting period of the award. The fair market value of restricted stock and restricted stock units is based on the fair value of the underlying shares of common stock on the date of grant. The fair value of stock options is estimated on the date of grant using the Black-Scholes model. Forfeitures are accounted for as they occur.

The amount of tax benefit related to the exercise, vesting and forfeiture of equity-based awards reflected as a tax benefit in Heartland's income tax expense was $611,000 and $888,000 during the three months ended March 31, 2018 and 2017, respectively.

Restricted Stock Units

The Plan permits the Compensation Committee to grant restricted stock units ("RSUs"). In the first quarter of 2018, the Compensation Committee granted time-based RSUs with respect to 52,153 shares of common stock, and in the first quarter of 2017, the Compensation Committee granted time-based RSUs with respect to 55,665 shares of common stock to selected officers and employees. The time-based RSUs represent the right, without payment, to receive shares of Heartland common stock on a specified date in the future. The time-based RSUs granted in 2018 vest over three years in equal installments on March 6 of each of the three years following the year of the grant, while the 2017 time-based RSUs vest in equal installments on January 19 of each of the three years following the year of the grant. The time-based RSUs may also vest upon death or disability, upon a change in control or upon a "qualified retirement" (as defined in the RSU agreement). The retiree is required to sign a non-solicitation agreement as a condition to vesting.

In addition to the time-based RSUs referenced in the preceding paragraph, the Compensation Committee granted one-year performance-based RSUs with respect to 18,988 shares of common stock in the first quarter of 2018, and 27,570 shares of common stock in the first quarter of 2017. These performance-based RSUs are earned based on satisfaction of performance targets for the fiscal years ended December 31, 2018, and December 31, 2017, respectively, and then fully vest on a specified date in the third calendar year following the year of the initial grant.

The Compensation Committee also granted three-year performance-based RSUs with respect to 16,108 shares and 9,032 shares of common stock in the first quarter of 2018 and 2017, respectively. These performance-based RSUs will be earned based on satisfaction of performance targets for the three-year performance period ended December 31, 2020, and December 31, 2019, respectively. These performance-based RSUs or a portion thereof may vest in 2021 and 2020, respectively, after measurement of performance in relation to the performance targets.

The one-year and three-year performance-based RSUs vest to the extent that they are earned upon death or disability or upon a "qualified retirement." Upon a change in control, performance-based RSUs shall become vested at 100% of target if the RSU obligations are not assumed by the successor company. If the successor company does assume the RSU obligations, the 2017 and 2018 performance-based RSUs will vest at 100% of target upon a "Termination of Service" within the period beginning six months prior to a change in control and ending twenty-four months after a change in control.

All of Heartland's RSUs will be settled in common stock upon vesting and are not entitled to dividends until vested.

The Compensation Committee may grant RSUs under the Plan to directors as part of their compensation, to new management level employees at commencement of employment, and to other employees and service providers as incentives. During the three months ended March 31, 2018, and March 31, 2017, no time-based RSUs were granted to directors and new employees.

A summary of the RSUs outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Grant Date Fair Value		Shares		Weighted-Average Grant Date Fair Value
Outstanding at January 1	301,578		$	34.74	346,817		$	27.61
Granted	87,249		55.25		92,267		47.50
Vested	(107,553	)	30.79		(103,897	)	24.74
Forfeited	(19,113	)	43.62		(7,765	)	31.03
Outstanding at March 31	262,161		$	42.60	327,422		$	34.04

Total compensation costs recorded for RSUs were $1.9 million and $1.7 million for the three-month periods ended March 31, 2018 and 2017. As of March 31, 2018, there were $6.1 million of total unrecognized compensation costs related to the Plan for RSUs that are expected to be recognized through 2021.

Options

Although the Plan provides authority to the Compensation Committee to grant stock options, no options were granted during the first three months of 2018 and 2017. Prior to 2009, options were typically granted annually with an expiration date ten years after the date of grant. Vesting was generally over a five-year service period with equal portions of a grant becoming exercisable at three years, four years, and five years after the date of grant. A summary of the stock options outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Exercise Price		Shares		Weighted-Average Exercise Price
Outstanding at January 1	6,500		$	18.60	26,400		$	18.60
Granted	—		—		—		—
Exercised	(6,500	)	18.60		(5,500	)	18.60
Forfeited	—		—		—		—
Outstanding at March 31	—		$	—	20,900		$	18.60
Options exercisable at March 31	—		$	—	20,900		$	18.60

The intrinsic value for the total of all options exercised during the three months ended March 31, 2018, was $231,000. Cash received from options exercised was $121,000 for the three months ended March 31, 2018, and $102,000 for the three months ended March 31, 2017.

No compensation costs were recorded for options during the three month periods ended March 31, 2018 and 2017. There are no unrecorded compensation costs related to options at March 31, 2018. No stock options vested during the three-month periods ended March 31, 2018 and 2017.

Subsequent Events - Heartland has evaluated subsequent events that may require recognition or disclosure through the filing date of this Quarterly Report on Form 10-Q with the SEC.

Effect of New Financial Accounting Standards

In May 2014, the FASB issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers." The amendment clarifies the principles for recognizing revenue and develops a common revenue standard. The amendment outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that "an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." In applying the revenue model to contracts within its scope, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract, and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The new guidance does not apply to certain contracts within the scope of other ASC Topics, such as lease contracts, insurance contracts, financing arrangements, financial instruments, guarantees other than product or service warranties and nonmonetary exchanges between entities in the same line of business to facilitate sales to customers. Heartland evaluates noninterest income contracts affected by the new guidance by analyzing contracts and current accounting practices to determine if a change is appropriate. The amendment is largely consistent with existing guidance and current practices; however Heartland had to change the recognition of certain recurring revenue streams within trust and investment management fees. Heartland adopted the accounting standard effective January 1, 2018, as required, using a modified retrospective approach. However, the adoption of these amendments did not have a significant effect on Heartland's results of operations, financial position and liquidity other than expanded disclosure requirements. See Note 9, "Revenue," for further details regarding Heartland's revenue.

In January 2016, the FASB issued guidance ASU 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities." The amendments in ASU 2016-01 to Subtopic 825-10, Financial Instruments, contain the following elements: (1) require equity investments to be measured at fair value with changes in fair value recognized in net income; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; (3) eliminates the requirement for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (5) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or accompanying notes to the financial statements; and (7) clarifies that the entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity's other deferred tax assets. The amendments are effective for fiscal years beginning after December 15, 2017, and for interim periods within those fiscal years. Except for the early application of the amendment noted in item (5) above, early adoption of the amendments in this update is not permitted. Entities are required to and Heartland applied the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which are to be applied prospectively to equity investments that exist as of the adoption date. Heartland adopted the accounting standard on January 1, 2018, as required, and the adoption of these amendments did not have a material impact on its results of operations, financial position and liquidity. Heartland reclassified $280,000 from accumulated other comprehensive income to retained earnings on January 1, 2018, related to the fair value of its equity investments.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." Topic 842 requires a lessee to recognize leases on-balance sheet and disclose key information about leasing arrangements. The new standard establishes a right-of-use model (ROU) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as financing or operating, with classification affecting the pattern and classification of expense recognition in the income statement. The amendment is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and will be applied on a modified retrospective basis. Heartland leases certain properties and equipment under operating leases that will result in recognition of lease assets and lease liabilities on the consolidated balance sheets under the ASU; however the majority of Heartland's properties and equipment are owned, not leased. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. Early adoption is permitted. In January 2018, the FASB issued an amendment to provide entities with the optional practical expedient to not evaluate existing or expired land easements that were previously not accounted for as leases under Topic 840. Heartland intends to adopt the accounting standard in 2019, as required, and does not expect the adoption of this standard to have a significant impact on its results of operations, financial position and liquidity. Heartland has signed an agreement with a cloud-based lease software provider, and implementation of the software started in the first quarter of 2018.

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326)." The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The amendments in this ASU indicate that an entity should not use the length of time a security has been in an unrealized loss position to avoid recording a credit loss. In addition, in determining whether a credit loss exists, the amendments in this ASU also remove the requirements to consider the historical and implied volatility of the fair value of a security and recoveries or declines in fair value after the balance sheet date. The amendment is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. An entity may adopt the amendments earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Heartland intends to adopt the accounting standard in 2020, as required, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity. Upon adoption of ASU 2016-13, a cumulative-effect adjustment to retained earnings will be recorded as of the beginning of the first reporting period in which the guidance is effective. Heartland has formed an internal committee to assess and implement the standard, and Heartland has entered into an agreement with a third party vendor to evaluate potential methodologies and data.

In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments." The amendments in this update address eight specific cash flow issues with the objective of reducing the existing diversity in practice. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The amendments in this update should be applied using a retrospective transition method to each period presented. Heartland adopted this ASU on January 1, 2018, as required, and the adoption of these amendments did not have a material impact on Heartland's results of operations, financial position and liquidity.

In October 2016, the FASB issued ASU 2016-16, "Income Taxes (Topic 740) - Intra-Entity Transfer of Assets Other Than Inventory." The amendment requires an entity to recognize income tax consequences on an intra-entity transfer of an asset other than inventory at the time the transaction occurs. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The amendments must be applied and Heartland applied these amendments using a modified retrospective basis. Heartland adopted this ASU on January 1, 2018, as required, and the adoption of this amendment did not have a material impact on Heartland's results of operations, financial position and liquidity.

In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business," which narrows the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. ASU 2017-01 is effective for public business entities in annual periods beginning after December 15, 2017, including interim periods therein. Heartland adopted ASU 2017-01 on January 1, 2018, as required, and the adoption did not have a material impact on Heartland's results of operations, financial position, and liquidity.

In January 2017, the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350)." This amendment is to simplify the subsequent measurement of goodwill by eliminating step two from the goodwill impairment test. Instead, an entity will perform only step one of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing the impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized cannot exceed the total amount of goodwill allocated to that reporting unit. An entity will still have the option to perform a qualitative assessment for a reporting unit to determine if the quantitative step one impairment test is necessary. This amendment is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied prospectively. Early adoption is permitted, including in an interim period for impairment tests performed after January 1, 2017. Heartland intends to adopt this ASU in the third quarter of 2020, consistent with the annual impairment test as of September 30, 2020, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity.

In March 2017, the FASB issued ASU 2017-08, "Receivables - Nonrefundable Fee and Other Costs (Subtopic 310-20)." These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Discounts continue to be amortized to maturity. These amendments are effective for public business entities for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If any entity early adopts the amendments in an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes the interim period. The amendments must be applied and Heartland intends to apply these amendments on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Heartland intends to adopt this ASU in 2019, as required, and is currently evaluating the potential impact on its results of operations, financial position and liquidity.

In May 2017, the FASB issued ASU 2017-09, "Compensation - Stock Compensation (Topic 718)." The amendments provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the modified award is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments are effective for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim periods for public business entities for reporting periods for which financial statements have not yet been issued. The amendments should be applied and Heartland applied these amendments prospectively to an award modified on or after the adoption date. Heartland adopted this ASU on January 1, 2018, as required, the adoption did not have a material impact to its results of operations, financial position and liquidity because Heartland has not typically modified share-based payment awards after the original award has been granted.

In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging:Targeted Improvements to Accounting for Hedging Activities." The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2017-12 requires a modified retrospective transition method in which Heartland will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the consolidated balance sheet as of the date of adoption. Heartland intends to adopt this ASU in 2019, as required, and does not believe there will be a material impact to its results of operations, financial position and liquidity.

In February 2018, the FASB issued ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220)." This ASU allows for the option to reclassify from accumulated other comprehensive income ("AOCI") to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate in the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017. The legislation included a reduction to the corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the historical corporate income tax rate and the newly enacted 21 percent corporate income tax rate. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted for public businesses for reporting periods for which financial statements have not yet been issued. Heartland adopted the guidance as of December 31, 2017. The adoption of this ASU was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $4.5 million increase to retained earnings and a corresponding decrease to AOCI on December 31, 2017.

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Acquisitions

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Acquisitions

ACQUISITIONS

First Bank Lubbock Bancshares, Inc.

On December 12, 2017, Heartland entered into a definitive merger agreement with First Bank Lubbock Bancshares, Inc., parent company of FirstBank & Trust Company, headquartered in Lubbock, Texas. Under the terms of the definitive merger agreement, Heartland will acquire First Bank Lubbock Bancshares, Inc. in a transaction valued at approximately $185.6 million as of the announcement date, subject to certain adjustments. Shareholders of First Bank Lubbock Bancshares, Inc. will receive a combination of Heartland common stock and cash. As of March 31, 2018, FirstBank & Trust Company had total assets of $971.5 million, including $704.9 million of gross loans held to maturity, and deposits of $869.3 million. Upon closing of the transaction, FirstBank & Trust Company will become a wholly-owned subsidiary of Heartland and will continue to operate under its current name and management team as Heartland's eleventh state-chartered bank. Heartland has received approval by the bank regulatory authorities related to this acquisition. The transaction is expected to close in the second quarter of 2018.

Signature Bancshares, Inc.

On February 23, 2018, Heartland completed the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, headquartered in Minnetonka, Minnesota. Under the terms of the definitive merger agreement, Heartland acquired Signature Bancshares, Inc. in a transaction valued at approximately $61.4 million, of which $7.8 million was cash, and the remainder was settled by delivery of 1,000,843 shares of Heartland common stock. Simultaneous with the close, Signature Bank merged into Heartland's wholly-owned Minnesota Bank & Trust subsidiary, and the combined entity operates under the Minnesota Bank & Trust brand name. The transaction included, at fair value, total assets of $427.1 million, including $324.5 million of gross loans held to maturity, and deposits of $357.3 million. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Signature Bancshares, Inc.

Citywide Banks of Colorado, Inc.

On July 7, 2017, Heartland acquired Citywide Banks of Colorado, Inc., parent company of Citywide Banks, headquartered in Aurora, Colorado. The transaction consideration was approximately $211.2 million, of which $58.6 million was cash, and the remainder was settled by delivery of 3,216,161 shares of Heartland common stock. Simultaneous with the close, Citywide Banks merged into Heartland's Centennial Bank and Trust subsidiary, and the combined entity operates as Citywide Banks. The transaction included, at fair value, total assets of $1.49 billion, including $985.4 million of net loans outstanding, and $1.21 billion of deposits on the acquisition date. Included in this transaction was one bank building with a fair value of $1.4 million that Heartland intends to sell and is classified as premises, furniture and equipment held for sale on the consolidated balance sheets. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Citywide Banks of Colorado, Inc.

Founders Bancorp

On February 28, 2017, Heartland acquired Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California. The purchase price was approximately $31.0 million, which was paid by delivery of 455,877 shares of Heartland common stock and cash of $8.4 million. The transaction included, at fair value, total assets of $213.9 million, loans of $96.4 million, and deposits of $181.5 million on the acquisition date. The transaction also included one bank building with a fair value of $576,000 that Heartland sold during the second quarter of 2017. Simultaneous with the closing of the transaction, Founders Community Bank merged into Heartland's Premier Valley Bank subsidiary. The transaction was a tax-free reorganization with respect to the stock consideration received by the stockholders of Founders Bancorp.

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Securities

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Securities

SECURITIES

The amortized cost, gross unrealized gains and losses, and estimated fair values of securities available for sale as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
U.S. government corporations and agencies	$	11,254	$	3	$	(69	)	$	11,188
Mortgage and asset-backed securities	1,691,092		3,968		(47,456		)	1,647,604
Obligations of states and political subdivisions	361,475		1,132		(10,427		)	352,180
Total debt securities	2,063,821		5,103		(57,952		)	2,010,972
Equity securities	16,693		—		—			16,693
Total	$	2,080,514	$	5,103	$	(57,952	)	$	2,027,665
December 31, 2017
U.S. government corporations and agencies	$	5,358	$	8	$	(38	)	$	5,328
Mortgage and asset-backed securities	1,785,467		5,856		(37,587		)	1,753,736
Obligations of states and political subdivisions	441,060		4,669		(4,714		)	441,015
Total debt securities	2,231,885		10,533		(42,339		)	2,200,079
Equity securities	16,296		378		—			16,674
Total	$	2,248,181	$	10,911	$	(42,339	)	$	2,216,753

The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
Obligations of states and political subdivisions	$	249,766	$	9,699	$	(827	)	$	258,638
Total	$	249,766	$	9,699	$	(827	)	$	258,638
December 31, 2017
Obligations of states and political subdivisions	$	253,550	$	12,460	$	(516	)	$	265,494
Total	$	253,550	$	12,460	$	(516	)	$	265,494

At March 31, 2018, approximately 77% of Heartland's mortgage and asset-backed securities were issued by government-sponsored enterprises.

The amortized cost and estimated fair value of debt securities available for sale at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	5,397	$	5,392
Due in 1 to 5 years	56,369		56,209
Due in 5 to 10 years	116,517		112,484
Due after 10 years	194,446		189,283
Total debt securities	372,729		363,368
Mortgage and asset-backed securities	1,691,092		1,647,604
Equity securities	16,693		16,693
Total investment securities	$	2,080,514	$	2,027,665

The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	2,486	$	2,523
Due in 1 to 5 years	27,627		28,231
Due in 5 to 10 years	104,170		106,538
Due after 10 years	115,483		121,346
Total investment securities	$	249,766	$	258,638

As of March 31, 2018, and December 31, 2017, securities with a fair value of $594.3 million and $670.3 million, respectively, were pledged to secure public and trust deposits, short-term borrowings and for other purposes as required or permitted by law.

Gross gains and losses realized related to the sales of securities available for sale for the three-month periods ended March 31, 2018 and 2017, are summarized as follows, in thousands:

	Three Months Ended March 31,
	2018		2017
Proceeds from sales	$	392,246	$	221,637
Gross security gains	3,013		3,830
Gross security losses	1,572		1,339

The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in Heartland's securities portfolio as of March 31, 2018, and December 31, 2017. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 months or more. The reference point for determining how long an investment was in an unrealized loss position wasMarch 31, 2017, andDecember 31, 2016, respectively. Securities for which Heartland has taken credit-related other-than-temporary impairment ("OTTI") write-downs are categorized as being "less than 12 months" or "12 months or longer" in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down.

Securities available for sale	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
U.S. government corporations and agencies	$	10,685	$	(69	)	$	—	$	—		$	10,685	$	(69	)
Mortgage and asset-backed securities	923,293		(18,459		)	379,672		(28,997		)	1,302,965		(47,456		)
Obligations of states and political subdivisions	177,100		(3,456		)	131,574		(6,971		)	308,674		(10,427		)
Total debt securities	1,111,078		(21,984		)	511,246		(35,968		)	1,622,324		(57,952		)
Total temporarily impaired securities	$	1,111,078	$	(21,984	)	$	511,246	$	(35,968	)	$	1,622,324	$	(57,952	)
December 31, 2017
U.S. government corporations and agencies	$	4,819	$	(38	)	$	—	$	—		$	4,819	$	(38	)
Mortgage and asset-backed securities	851,070		(11,533		)	399,978		(26,054		)	1,251,048		(37,587		)
Obligations of states and political subdivisions	93,040		(667		)	159,180		(4,047		)	252,220		(4,714		)
Total debt securities	948,929		(12,238		)	559,158		(30,101		)	1,508,087		(42,339		)
Total temporarily impaired securities	$	948,929	$	(12,238	)	$	559,158	$	(30,101	)	$	1,508,087	$	(42,339	)

Securities held to maturity	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
Obligations of states and political subdivisions	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
Total temporarily impaired securities	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
December 31, 2017
Obligations of states and political subdivisions	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)
Total temporarily impaired securities	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)

Heartland reviews the investment securities portfolio on a quarterly basis to monitor its exposure to OTTI. A determination as to whether a security's decline in fair value is other-than-temporary takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors Heartland may consider in the OTTI analysis include the length of time the security has been in an unrealized loss position, changes in security ratings, financial condition of the issuer, as well as security and industry specific economic conditions. In addition, with regard to debt securities, Heartland may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds and the value of any underlying collateral. For certain debt securities in unrealized loss positions, Heartland prepares cash flow analyses to compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security.

The remaining unrealized losses on Heartland's mortgage and asset-backed securities are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. The losses are not related to concerns regarding the underlying credit of the issuers or the underlying collateral. It is expected that the securities will not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates or widening market spreads and not credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.

The remaining unrealized losses on Heartland's obligations of states and political subdivisions are the result of changes in market interest rates or widening of market spreads subsequent to the initial purchase of the securities. Management monitors the published credit ratings of these securities and the stability of the underlying municipalities. Because the decline in fair value is attributable to changes in interest rates or widening market spreads due to insurance company downgrades and not underlying credit quality, and because Heartland has the intent and ability to hold these investments until a market price recovery or to maturity and does not believe it will be required to sell the securities before maturity, these investments are not considered other-than-temporarily impaired.

There were no gross realized gains or losses on the sale of available for sale or held to maturity securities with OTTI write-downs for the three-month periods ended March 31, 2018, and March 31, 2017, respectively.

Included in other securities at March 31, 2018, and December 31, 2017, were shares of stock in the Federal Home Loan Banks (the "FHLBs") of Des Moines, Chicago, Dallas, San Francisco and Topeka at an amortized cost of $14.3 million and $14.0 million, respectively.

The Heartland banks are required by federal law to maintain FHLB stock as members of the various FHLBs. These equity securities are "restricted" in that they can only be sold back to the respective institutions from which they were acquired or another member institution at par. Therefore, the FHLB stock is less liquid than other marketable equity securities, and the fair value approximates amortized cost. Heartland considers its FHLB stock as a long-term investment that provides access to competitive products and liquidity. Heartland evaluates impairment in these investments based on the ultimate recoverability of the par value and, at March 31, 2018, did not consider the investments to be other than temporarily impaired.

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Loans

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Loans

LOANS

Loans as of March 31, 2018, and December 31, 2017, were as follows, in thousands:

	March 31, 2018			December 31, 2017
Loans receivable held to maturity:
Commercial	$	1,806,683		$	1,646,606
Commercial real estate	3,323,094			3,163,269
Agricultural and agricultural real estate	518,386			511,588
Residential real estate	624,725			624,279
Consumer	474,929			447,484
Gross loans receivable held to maturity	6,747,817			6,393,226
Unearned discount	(1,620		)	(556		)
Deferred loan fees	(182		)	(1,206		)
Total net loans receivable held to maturity	6,746,015			6,391,464
Allowance for loan losses	(58,656		)	(55,686		)
Loans receivable, net	$	6,687,359		$	6,335,778

Heartland has certain lending policies and procedures in place that are designed to provide for an acceptable level of credit risk. The board of directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the board with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans.

Diversification in the loan portfolio is also a means of managing risk associated with fluctuations in economic conditions. Heartland originates commercial and commercial real estate loans for a wide variety of business purposes, including lines of credit for capital and operating purposes and term loans for real estate and equipment purchases. Agricultural loans provide financing for capital improvements and farm operations, as well as livestock and machinery purchases. Residential mortgage loans are originated for the construction, purchase or refinancing of single family residential properties. Consumer loans include loans for motor vehicles, home improvement, home equity and personal lines of credit. Heartland's consumer finance subsidiaries, Citizens Finance Co. and Citizens Finance of Illinois Co., typically lend to borrowers with past credit problems or limited credit histories, which comprises approximately 15% of Heartland's total consumer loan portfolio.

Under Heartland’s credit practices, a loan is impaired when, based on current information and events, it is probable that Heartland will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loan impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except where more practical, impairment is measured at the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent.

The following table shows the balance in the allowance for loan losses at March 31, 2018, and December 31, 2017, and the related loan balances, disaggregated on the basis of impairment methodology, in thousands. Loans evaluated under ASC 310-10-35 include loans on nonaccrual status and troubled debt restructurings, which are individually evaluated for impairment, and other impaired loans deemed to have similar risk characteristics. All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan losses during 2018.

	Allowance For Loan Losses						Gross Loans Receivable Held to Maturity
	Ending Balance Under ASC 310-10-35		Ending Balance Under ASC 450-20		Total		Ending Balance Evaluated for Impairment Under ASC 310-10-35		Ending Balance Evaluated for Impairment Under ASC 450-20		Total
March 31, 2018
Commercial	$	2,425	$	16,970	$	19,395	$	9,005	$	1,797,678	$	1,806,683
Commercial real estate	736		22,733		23,469		22,920		3,300,174		3,323,094
Agricultural and agricultural real estate	787		3,929		4,716		16,896		501,490		518,386
Residential real estate	386		1,755		2,141		28,324		596,401		624,725
Consumer	1,137		7,798		8,935		6,427		468,502		474,929
Total	$	5,471	$	53,185	$	58,656	$	83,572	$	6,664,245	$	6,747,817
December 31, 2017
Commercial	$	1,613	$	16,485	$	18,098	$	7,415	$	1,639,191	$	1,646,606
Commercial real estate	766		21,184		21,950		23,705		3,139,564		3,163,269
Agricultural and agricultural real estate	546		3,712		4,258		13,304		498,284		511,588
Residential real estate	430		1,794		2,224		27,141		597,138		624,279
Consumer	1,400		7,756		9,156		6,903		440,581		447,484
Total	$	4,755	$	50,931	$	55,686	$	78,468	$	6,314,758	$	6,393,226

The following table presents nonaccrual loans, accruing loans past due 90 days or more and performing troubled debt restructured loans at March 31, 2018, and December 31, 2017, in thousands:

	March 31, 2018		December 31, 2017
Nonaccrual loans	$	60,644	$	58,272
Nonaccrual troubled debt restructured loans	4,162		4,309
Total nonaccrual loans	$	64,806	$	62,581
Accruing loans past due 90 days or more	$	22	$	830
Performing troubled debt restructured loans	$	3,206	$	6,617

The following tables provide information on troubled debt restructured loans that were modified during the three-month periods ended March 31, 2018, and March 31, 2017, dollars in thousands:

	Three Months Ended March 31,
	2018					2017
	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial	—	$	—	$	—	—	$	—	$	—
Commercial real estate	—	—		—		—	—		—
Total commercial and commercial real estate	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	5	877		752		3	348		348
Consumer	—	—		—		—	—		—
Total	5	$	877	$	752	3	$	348	$	348

The pre-modification and post-modification recorded investment represents amounts as of the date of loan modification. The change related to the pre-modification investment and post-modification investment amounts on Heartland's residential real estate trouble debt restructured loans is due to $142,000 of principal deferment collected from government guarantees and $17,000 of capitalized interest and escrow. At March 31, 2018, there were no commitments to extend credit to any of the borrowers with an existing troubled debt restructured loan.

The following table shows troubled debt restructured loans for which there was a payment default during the three month periods ended March 31, 2018, and March 31, 2017, that had been modified during the twelve-month period prior to default, in thousands:

	With Payment Defaults During the Following Periods
	Three Months Ended March 31,
	2018			2017
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial	—	$	—	—	$	—
Commercial real estate	—	—		—	—
Total commercial and commercial real estate	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	3	519		—	—
Consumer	—	—		—	—
Total	3	$	519	—	$	—

Heartland's internal rating system is a series of grades reflecting management's risk assessment, based on its analysis of the borrower's financial condition. The "pass" category consists of all loans that are not in the "nonpass" category, categorized into a range of loan grades that reflect increasing, though still acceptable, risk. Movement of risk through the various grade levels in the pass category is monitored for early identification of credit deterioration. The "nonpass" category consists of special mention, substandard, doubtful and loss loans. The "special mention" rating is attached to loans where the borrower exhibits negative trends in financial circumstances due to borrower specific or systemic conditions that, if left uncorrected, threaten the borrower's capacity to meet its debt obligations. The borrower is believed to have sufficient financial flexibility to react to and resolve its negative financial situation. These credits are closely monitored for improvement or deterioration. The "substandard" rating is assigned to loans that are inadequately protected by the current net worth and paying capacity of the borrower and that may be further at risk due to deterioration in the value of collateral pledged. Well-defined weaknesses jeopardize liquidation of the debt. These loans are still considered collectible; however, a distinct possibility exists that Heartland will sustain some loss if deficiencies are not corrected. Substandard loans may exhibit some or all of the following weaknesses: deteriorating financial trends, lack of earnings, inadequate debt service capacity, excessive debt and/or lack of liquidity. The "doubtful" rating is assigned to loans where identified weaknesses in the borrowers' ability to repay the loan make collection or liquidation in full, on the basis of existing facts, conditions and values, highly questionable and improbable. These borrowers are usually in default, lack liquidity and capital, as well as resources necessary to remain as an operating entity. Specific pending events, such as capital injections, liquidations or perfection of liens on additional collateral, may strengthen the credit, thus deferring the rating of the loan as "loss" until the exact status of the loan can be determined. The loss rating is assigned to loans considered uncollectible. Heartland had no loans classified as loss or doubtful as of March 31, 2018. Loans are placed on "nonaccrual" when management does not expect to collect payments of principal and interest in full or when principal or interest has been in default for a period of 90 days or more, unless the loan is both well secured and in the process of collection.

The following table presents loans by credit quality indicator at March 31, 2018, and December 31, 2017, in thousands:

	Pass		Nonpass		Total
March 31, 2018
Commercial	$	1,677,338	$	129,345	$	1,806,683
Commercial real estate	3,146,622		176,472		3,323,094
Total commercial and commercial real estate	4,823,960		305,817		5,129,777
Agricultural and agricultural real estate	442,484		75,902		518,386
Residential real estate	585,886		38,839		624,725
Consumer	461,786		13,143		474,929
Total gross loans receivable held to maturity	$	6,314,116	$	433,701	$	6,747,817
December 31, 2017
Commercial	$	1,552,783	$	93,823	$	1,646,606
Commercial real estate	2,985,501		177,768		3,163,269
Total commercial and commercial real estate	4,538,284		271,591		4,809,875
Agricultural and agricultural real estate	451,539		60,049		511,588
Residential real estate	586,623		37,656		624,279
Consumer	432,936		14,548		447,484
Total gross loans receivable held to maturity	$	6,009,382	$	383,844	$	6,393,226

The nonpass category in the table above is comprised of approximately 55% special mention loans and 45% substandard loans as of March 31, 2018. The percent of nonpass loans on nonaccrual status as of March 31, 2018, was 15%. As of December 31, 2017, the nonpass category in the table above was comprised of approximately 52% special mention loans and 48% substandard loans. The percent of nonpass loans on nonaccrual status as of December 31, 2017, was 16%. Loans delinquent 30 to 89 days as a percent of total loans were 0.21% at March 31, 2018, compared to 0.27% at December 31, 2017. Changes in credit risk are monitored on a regular basis and changes in risk ratings are made when identified. All impaired loans are reviewed at least annually.

As of March 31, 2018, Heartland had $2.8 million of loans secured by residential real estate property that were in the process of foreclosure.

The following table sets forth information regarding Heartland's accruing and nonaccrual loans at March 31, 2018, and December 31, 2017, in thousands:

	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
March 31, 2018
Commercial	$	2,906	$	1,883	$	—	$	4,789	$	1,793,565	$	8,329	$	1,806,683
Commercial real estate	403		740		—		1,143		3,305,043		16,908		3,323,094
Total commercial and commercial real estate	3,309		2,623		—		5,932		5,098,608		25,237		5,129,777
Agricultural and agricultural real estate	1,147		69		22		1,238		500,320		16,828		518,386
Residential real estate	2,891		66		—		2,957		602,927		18,841		624,725
Consumer	2,618		1,477		—		4,095		466,934		3,900		474,929
Total gross loans receivable held to maturity	$	9,965	$	4,235	$	22	$	14,222	$	6,668,789	$	64,806	$	6,747,817
December 31, 2017
Commercial	$	1,246	$	259	$	100	$	1,605	$	1,637,773	$	7,228	$	1,646,606
Commercial real estate	4,769		2,326		—		7,095		3,139,576		16,598		3,163,269
Total commercial and commercial real estate	6,015		2,585		100		8,700		4,777,349		23,826		4,809,875
Agricultural and agricultural real estate	604		134		—		738		497,546		13,304		511,588
Residential real estate	2,022		270		—		2,292		601,120		20,867		624,279
Consumer	4,734		943		730		6,407		436,493		4,584		447,484
Total gross loans receivable held to maturity	$	13,375	$	3,932	$	830	$	18,137	$	6,312,508	$	62,581	$	6,393,226

The majority of Heartland's impaired loans are on nonaccrual or have had their terms restructured in a troubled debt restructuring. The following tables present, by category of loan, impaired loans, the unpaid contractual loan balances at March 31, 2018, and December 31, 2017; the outstanding loan balances recorded on the consolidated balance sheets at March 31, 2018, and December 31, 2017; any related allowance recorded for those loans as of March 31, 2018, and December 31, 2017; the average outstanding loan balances recorded on the consolidated balance sheets during the three-months ended March 31, 2018, and year ended December 31, 2017; and the interest income recognized on the impaired loans during the three-month period ended March 31, 2018, and year ended December 31, 2017, in thousands:

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year- to- Date Avg. Loan Balance		Year- to- Date Interest Income Recognized
March 31, 2018
Impaired loans with a related allowance:
Commercial	$	2,816	$	2,816	$	2,425	$	2,472	$	—
Commercial real estate	11,180		9,324		736		9,520		8
Total commercial and commercial real estate	13,996		12,140		3,161		11,992		8
Agricultural and agricultural real estate	1,536		1,536		787		1,537		—
Residential real estate	1,693		1,693		386		1,608		3
Consumer	2,859		2,859		1,137		3,069		9
Total impaired loans with a related allowance	$	20,084	$	18,228	$	5,471	$	18,206	$	20
Impaired loans without a related allowance:
Commercial	$	7,308	$	6,189	$	—	$	5,449	$	49
Commercial real estate	14,202		13,596		—		13,879		97
Total commercial and commercial real estate	21,510		19,785		—		19,328		146
Agricultural and agricultural real estate	17,388		15,360		—		12,954		1
Residential real estate	26,635		26,631		—		26,878		109
Consumer	3,757		3,568		—		3,912		22
Total impaired loans without a related allowance	$	69,290	$	65,344	$	—	$	63,072	$	278
Total impaired loans held to maturity:
Commercial	$	10,124	$	9,005	$	2,425	$	7,921	$	49
Commercial real estate	25,382		22,920		736		23,399		105
Total commercial and commercial real estate	35,506		31,925		3,161		31,320		154
Agricultural and agricultural real estate	18,924		16,896		787		14,491		1
Residential real estate	28,328		28,324		386		28,486		112
Consumer	6,616		6,427		1,137		6,981		31
Total impaired loans held to maturity	$	89,374	$	83,572	$	5,471	$	81,278	$	298

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year-to- Date Avg. Loan Balance		Year-to- Date Interest Income Recognized
December 31, 2017
Impaired loans with a related allowance:
Commercial	$	2,292	$	2,292	$	1,613	$	3,607	$	39
Commercial real estate	11,925		10,068		766		11,479		34
Total commercial and commercial real estate	14,217		12,360		2,379		15,086		73
Agricultural and agricultural real estate	1,539		1,539		546		3,437		—
Residential real estate	1,568		1,568		430		2,056		15
Consumer	2,634		2,634		1,400		2,370		41
Total impaired loans with a related allowance	$	19,958	$	18,101	$	4,755	$	22,949	$	129
Impaired loans without a related allowance:
Commercial	$	6,243	$	5,123	$	—	$	2,586	$	165
Commercial real estate	14,243		13,637		—		20,148		514
Total commercial and commercial real estate	20,486		18,760		—		22,734		679
Agricultural and agricultural real estate	13,793		11,765		—		9,654		—
Residential real estate	25,573		25,573		—		26,024		277
Consumer	4,269		4,269		—		3,884		73
Total impaired loans without a related allowance	$	64,121	$	60,367	$	—	$	62,296	$	1,029
Total impaired loans held to maturity:
Commercial	$	8,535	$	7,415	$	1,613	$	6,193	$	204
Commercial real estate	26,168		23,705		766		31,627		548
Total commercial and commercial real estate	34,703		31,120		2,379		37,820		752
Agricultural and agricultural real estate	15,332		13,304		546		13,091		—
Residential real estate	27,141		27,141		430		28,080		292
Consumer	6,903		6,903		1,400		6,254		114
Total impaired loans held to maturity	$	84,079	$	78,468	$	4,755	$	85,245	$	1,158

On February 23, 2018, Heartland acquired Signature Bancshares, Inc., parent company of Signature Bank, based in Minnetonka, Minnesota. As of February 23, 2018, Signature Bancshares, Inc. had gross loans of $335.1 million and the estimated fair value of the loans acquired was $324.5 million. Included in loans acquired from Signature Bank is a lease portfolio with a fair value of $16.0 million. The lease portfolio is include with the commercial loan category for disclosure purposes.

On July 7, 2017, Heartland acquired Citywide Banks of Colorado, Inc., parent company of Citywide Banks, based in Denver, Colorado. As of July 7, 2017, Citywide Banks had gross loans of $1.00 billion, and the estimated fair value of the loans acquired was $985.4 million.

On February 28, 2017, Heartland acquired Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California. As of February 28, 2017, Founders Community Bank had gross loans of $98.9 million, and the estimated fair value of the loans acquired was $96.4 million.

Heartland uses the acquisition method of accounting for purchased loans in accordance with ASC 805, "Business Combinations." Purchased loans acquired in a business combination are recorded at estimated fair value on their purchase date, but the purchaser cannot carry over the related allowance for loan losses. Purchased loans are accounted for under ASC 310-30, "Loans and Debt Securities with Deteriorated Credit Quality," when the loans have evidence of credit deterioration since origination, and when at the date of the acquisition, it is probable that Heartland will not collect all contractually required principal and interest payments. Evidence of credit quality deterioration at the purchase date includes statistics such as past due and nonaccrual status. Generally, acquired loans that meet Heartland’s definition for nonaccrual status fall within the scope of ASC 310-30. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference, which is included in the carrying value of the loans. Subsequent decreases to the expected cash flows of the loan will generally result in a provision for loan losses. Subsequent increases in cash flows result in a reversal of the provision for loan losses to the extent of prior charges, or a reclassification of the difference from nonaccretable to accretable with a positive impact on future interest income. Further, any excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable yield and is recognized into interest income over the remaining life of the loan when there is a reasonable expectation about the amount and timing of such cash flows.

At March 31, 2018, and December 31, 2017, the carrying amount of loans acquired since 2015 consist of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:

	March 31, 2018						December 31, 2017
	Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans		Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans
Commercial	$	3,142	$	262,107	$	265,249	$	952	$	187,375	$	188,327
Commercial real estate	2,474		1,078,724		1,081,198		2,572		1,052,469		1,055,041
Agricultural and agricultural real estate	—		26		26		—		1,242		1,242
Residential real estate	199		181,020		181,219		214		173,909		174,123
Consumer loans	—		78,613		78,613		—		51,292		51,292
Total loans	$	5,815	$	1,600,490	$	1,606,305	$	3,738	$	1,466,287	$	1,470,025

Changes in accretable yield on acquired loans with evidence of credit deterioration at the date of acquisition for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Three Months Ended March 31,
	2018			2017
Balance at beginning of period	$	57		$	182
Original yield premium, net, at date of acquisition	(56		)	—
Accretion	(199		)	(173		)
Reclassification from nonaccretable difference(1)	198			127
Balance at period end	$	—		$	136
(1) Represents increases in estimated cash flows expected to be received, primarily due to lower estimated credit losses.

For loans acquired since January 2015, on the acquisition dates the preliminary estimate of the contractually required payments receivable for all loans with evidence of credit deterioration since origination was $26.0 million, and the estimated fair value of these loans was $15.0 million. At March 31, 2018, a majority of these loans were valued based upon the liquidation value of the underlying collateral, because the expected cash flows are primarily based on the liquidation of such collateral, and the timing and amount of the cash flows could not be reasonably estimated. At March 31, 2018, there was no allowance recorded and $139,000 of allowance recorded at December 31, 2017, related to these ASC 310-30 loans. Provision expense of $0 and $1,000 was recorded for the three-month periods ended March 31, 2018, and 2017, respectively.

For loans acquired since January 2015, the preliminary estimate on the acquisition dates of the contractually required payments receivable for all nonimpaired loans acquired was $2.99 billion, and the estimated fair value of the loans was $2.91 billion.

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Allowance for Loan Losses

3 Months Ended

Mar. 31, 2018

Loans and Leases Receivable Disclosure [Abstract]

Allowance for Loan Losses

ALLOWANCE FOR LOAN LOSSES

Changes in the allowance for loan losses for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Commercial			Commercial Real Estate			Agricultural		Residential Real Estate			Consumer			Total
Balance at December 31, 2017	$	18,098		$	21,950		$	4,258	$	2,224		$	9,156		$	55,686
Charge-offs	(794		)	(125		)	—		(16		)	(1,289		)	(2,224		)
Recoveries	104			448			14		75			290			931
Provision	1,987			1,196			444		(142		)	778			4,263
Balance at March 31, 2018	$	19,395		$	23,469		$	4,716	$	2,141		$	8,935		$	58,656

	Commercial			Commercial Real Estate			Agricultural			Residential Real Estate			Consumer			Total
Balance at December 31, 2016	$	14,765		$	24,319		$	4,210		$	2,263		$	8,767		$	54,324
Charge-offs	(230		)	(608		)	(871		)	(265		)	(1,744		)	(3,718		)
Recoveries	234			212			1			2			303			752
Provision	1,411			(126		)	643			183			1,530			3,641
Balance at March 31, 2017	$	16,180		$	23,797		$	3,983		$	2,183		$	8,856		$	54,999

Management allocates the allowance for loan losses by pools of risk within each loan portfolio. The allocation of the allowance for loan losses by loan portfolio is made for analytical purposes and is not necessarily indicative of the trend of future loan losses in any particular category. The total allowance for loan losses is available to absorb losses from any segment of the loan portfolio.

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Goodwill, Core Deposit Premium and Other Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill, Core Deposit Premium and Other Intangible Assets

GOODWILL, CORE DEPOSIT PREMIUM AND OTHER INTANGIBLE ASSETS

Heartland had goodwill of $270.3 million at March 31, 2018, and $236.6 million at December 31, 2017. Heartland conducts its annual internal assessment of the goodwill both at the consolidated level and at its subsidiaries as of September 30. There was no goodwill impairment as of the most recent assessment.

Heartland recorded $33.7 million of goodwill and $7.7 million of core deposit intangibles in connection with the acquisition of Signature Bancshares, Inc., parent company of Signature Bank, headquartered in Minnetonka, Minnesota on February 23, 2018.

Heartland recorded $95.2 million of goodwill and $16.0 million of core deposit intangibles in connection with the acquisition of Citywide Banks of Colorado, Inc., parent company of Citywide Banks, headquartered in Aurora, Colorado on July 7, 2017.

Heartland recorded $13.8 million of goodwill and $2.5 million of core deposit intangibles in connection with the acquisition of Founders Bancorp, parent company of Founders Community Bank, based in San Luis Obispo, California on February 28, 2017.

The core deposit intangibles recorded with the Signature Bancshares, Inc., Citywide Banks of Colorado, Inc., and Founders Bancorp acquisitions are not deductible for tax purposes and are expected to be amortized over a period of 10 years on an accelerated basis.

Goodwill related to the Signature Bancshares, Inc., Citywide Banks of Colorado, Inc., and Founders Bancorp acquisitions resulted from expected operational synergies, increased market presence, cross-selling opportunities, and expanded business lines and is not deductible for tax purposes.

Heartland's intangible assets consist of core deposit intangibles, mortgage servicing rights, customer relationship intangibles, and commercial servicing rights. The gross carrying amount of these intangible assets and the associated accumulated amortization at March 31, 2018, and December 31, 2017, are presented in the table below, in thousands:

	March 31, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	69,731	$	28,939	$	40,792	$	62,008	$	27,086	$	34,922
Customer relationship intangibles	1,177		906		271		1,177		896		281
Mortgage servicing rights	42,249		19,084		23,165		42,139		18,891		23,248
Commercial servicing rights	6,740		4,434		2,306		6,719		4,110		2,609
Total	$	119,897	$	53,363	$	66,534	$	112,043	$	50,983	$	61,060

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:

	Core Deposit Intangibles		Customer Relationship Intangibles		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Nine months ending December 31, 2018	$	5,957	$	29	$	6,776	$	471	$	13,233
Year ending December 31,
2019	7,092		38		4,097		522		11,749
2020	6,220		37		3,512		411		10,180
2021	5,323		36		2,927		354		8,640
2022	4,175		34		2,341		290		6,840
2023	3,691		33		1,756		163		5,643
Thereafter	8,334		64		1,756		95		10,249
Total	$	40,792	$	271	$	23,165	$	2,306	$	66,534

Projections of amortization expense for mortgage servicing rights are based on existing asset balances and the existing interest rate environment as of March 31, 2018. Heartland's actual experience may be significantly different depending upon changes in mortgage interest rates and market conditions. Mortgage loans serviced for others were approximately $3.54 billion and $3.56 billion as of March 31, 2018, and December 31, 2017, respectively. Custodial escrow balances maintained in connection with the mortgage loan servicing portfolio were approximately $23.2 million and $17.3 million as of March 31, 2018, and December 31, 2017, respectively. The fair value of Heartland's mortgage servicing rights was estimated at $40.4 million at March 31, 2018, and $37.1 million at December 31, 2017.

Heartland's mortgage servicing rights portfolio is comprised of loans serviced for the Federal National Mortgage Association ("FNMA") and the Federal Home Loan Mortgage Corporation ("FHLMC"). Prior to the third quarter of 2017, Heartland also serviced loans for the Government National Mortgage Association ("GNMA"). The servicing rights portfolio is separated into 15- and 30-year tranches, and the servicing rights portfolio is an asset of one of Heartland's subsidiaries.

During the third quarter of 2017, Heartland entered into an agreement to sell substantially all of its GNMA servicing portfolio, which contained loans with an unpaid principal balance of approximately $773.9 million. The transaction qualified as a sale, and $6.9 million of mortgage servicing rights were de-recognized on the consolidated balance sheet as of December 31, 2017.

The fair value of mortgage servicing rights is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds, servicing costs and escrow earnings are considered in the calculation. The average constant prepayment rate was8.23%and9.73%for theMarch 31, 2018, andDecember 31, 2017, valuations, respectively. The discount rate was9.04%and9.06%for theMarch 31, 2018, andDecember 31, 2017, valuations, respectively. The average capitalization rate for the firstthreemonths of2018ranged from96to125basis points compared to the range of91to150basis points for2017. Fees collected for the servicing of mortgage loans for others were $2.2 million and $3.2 million for the three months ended March 31, 2018, and March 31, 2017.

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	23,248		$	32,088
Originations	1,162			2,132
Amortization	(1,245		)	(2,261		)
Balance at period end	$	23,165		$	31,959
Fair value of mortgage servicing rights	$	40,434		$	47,564
Mortgage servicing rights, net to servicing portfolio	0.66		%	0.74		%

Heartland's commercial servicing portfolio is comprised of loans guaranteed by the Small Business Administration and United States Department of Agriculture that have been sold with servicing retained by Heartland, which totaled $125.5 million at March 31, 2018 and $139.9 million at December 31, 2017. The commercial servicing rights portfolio is separated into two tranches at the respective Heartland subsidiary, loans with a term of less than 20 years and loans with a term of more than 20 years. Fees collected for the servicing of commercial loans for others were $420,000 and $415,000 for the three months ended March 31, 2018, and March 31, 2017, respectively.

The fair value of each commercial servicing rights portfolio is calculated based upon a discounted cash flow analysis. Cash flow assumptions, including prepayment speeds and servicing costs, are considered in the calculation. The range of average constant prepayment rates for the valuations was 8.27% to 9.89% as of March 31, 2018, compared to 7.27% to 8.88% as of December 31, 2017. The discount rate range was 13.09% to 16.71% for the March 31, 2018, valuations compared to 13.04% to 15.49% for the December 31, 2017, valuations. The capitalization rate for 2018 ranged from 310 to 445 basis points compared to 310 to 445 basis points for 2017. The total fair value of Heartland's commercial servicing rights was estimated at $2.8 million as of March 31, 2018, and $3.2 million as of December 31, 2017.

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	2,609		$	3,690
Originations	21			93
Amortization	(322		)	(306		)
Valuation allowance on commercial servicing rights	(2		)	5
Balance at period end	$	2,306		$	3,482
Fair value of commercial servicing rights	$	2,781		$	4,040
Commercial servicing rights, net to servicing portfolio	1.84		%	2.17		%

Mortgage and commercial servicing rights are initially recorded at fair value in net gains on sale of loans held for sale when they are acquired through loan sales. Fair value is based on market prices for comparable servicing contracts, when available, or based on a valuation model that calculates the present value of estimated future net servicing income.

Mortgage and commercial servicing rights are subsequently measured using the amortization method, which requires the asset to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment at each Heartland subsidiary based upon the fair value of the assets as compared to the carrying amount. Impairment is recognized through a valuation allowance for specific tranches to the extent that fair value is less than carrying amount at each Heartland subsidiary. At March 31, 2018, no valuation allowance was required on commercial servicing rights with a term less than 20 years and a $14,000 valuation allowance was required on commercial servicing rights with a term greater than 20 years. At December 31, 2017, no valuation allowance was required on commercial servicing rights with a term less than 20 years and a $12,000 valuation allowance was required on commercial servicing rights with a term greater than 20 years.

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights and any recorded valuation allowance at each respective subsidiary at March 31, 2018, and December 31, 2017:

March 31, 2018	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Impairment- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years		Impairment- More than 20 Years
Citywide Banks	$	6	$	10	$	—	$	33	$	36	$	—
Premier Valley Bank	72		104		—		286		272		14
Wisconsin Bank & Trust	368		534		—		1,554		1,825		—
Total	$	446	$	648	$	—	$	1,873	$	2,133	$	14
December 31, 2017
Citywide Banks	$	8	$	11	$	—	$	34	$	37	$	—
Premier Valley Bank	83		110		—		303		291		12
Wisconsin Bank & Trust	446		619		—		1,747		2,153		—
Total	$	537	$	740	$	—	$	2,084	$	2,481	$	12

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Derivative Financial Instruments

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

DERIVATIVE FINANCIAL INSTRUMENTS

Heartland uses derivative financial instruments as part of its interest rate risk management strategy. As part of the strategy, Heartland considers the use of interest rate swaps, caps, floors, collars, and certain interest rate lock commitments and forward sales of securities related to mortgage banking activities. Heartland's current strategy includes the use of interest rate swaps, interest rate lock commitments and forward sales of mortgage securities. In addition, Heartland is facilitating back-to-back loan swaps to assist customers in managing interest rate risk. Heartland's objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. Heartland is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. Heartland minimizes this risk by entering into derivative contracts with counterparties that meet Heartland’s credit standards, and the contracts contain collateral provisions protecting the at-risk party. Heartland has not experienced any losses from nonperformance by these counterparties. Heartland monitors counterparty risk in accordance with the provisions of ASC 815.

In addition, interest rate-related derivative instruments generally contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. Heartland was required to pledge no cash as collateral at March 31, 2018, and $1.2 million at December 31, 2017. At March 31, 2018, $860,000 of collateral was required to be pledged by Heartland's counterparties, compared to no collateral at December 31, 2017.

Heartland's derivative and hedging instruments are recorded at fair value on the consolidated balance sheets. See Note 8, “Fair Value,” for additional fair value information and disclosures.

Cash Flow Hedges

Heartland has variable rate funding which creates exposure to variability in interest payments due to changes in interest rates. To manage the interest rate risk related to the variability of interest payments, Heartland has entered into various interest rate swap agreements. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are received or made on Heartland's variable-rate liabilities. For the three months ended March 31, 2018, the change in net unrealized losses on cash flow hedges reflects changes in the fair value of the swaps and reclassification from accumulated other comprehensive income to interest expense totaling $197,000. For the next twelve months, Heartland estimates that cash payments and reclassification from accumulated other comprehensive income to interest expense will total $789,000.

Heartland entered into five forward starting interest rate swap transactions to effectively convert Heartland Financial Statutory Trust IV, V, and VII, which total $65.0 million, as well as Morrill Statutory Trust I and II, which total $20.0 million, from variable rate subordinated debentures to fixed rate debt. For accounting purposes, these five swap transactions are designated as cash flow hedges of the changes in LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on $85.0 million of Heartland's subordinated debentures that reset quarterly on a specified reset date. At inception, Heartland asserted that the underlying principal balance would remain outstanding throughout the hedge transaction, making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps.

The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as cash flow hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Receive Rate		Weighted Average Pay Rate		Maturity
March 31, 2018
Interest rate swap	$	25,000	$	239		Other assets	2.178	%	2.255	%	03/17/2021
Interest rate swap	20,000		(380		)	Other liabilities	1.704		3.355		01/07/2020
Interest rate swap	10,000		69			Other assets	2.286		1.674		03/26/2019
Interest rate swap	10,000		68			Other assets	2.178		1.658		03/18/2019
Interest rate swap	32,667		1,010			Other assets	4.240		3.674		05/10/2021
Interest rate swap	20,000		316			Other assets	2.125		2.390		06/15/2024
Interest rate swap	20,000		339			Other assets	2.006		2.352		03/01/2024
December 31, 2017
Interest rate swap	$	25,000	$	(106	)	Other liabilities	1.600	%	2.255	%	03/17/2021
Interest rate swap	20,000		(621		)	Other liabilities	1.350		3.355		01/07/2020
Interest rate swap	10,000		30			Other assets	1.329		1.674		03/26/2019
Interest rate swap	10,000		29			Other assets	1.600		1.658		03/18/2019
Interest rate swap	33,667		759			Other assets	3.932		3.674		05/10/2021
Interest rate swap(1)	20,000		(177		)	Other liabilities	1.588		2.390		06/15/2024
Interest rate swap(2)	20,000		(149		)	Other Liabilities	1.481		2.352		03/01/2024

The table below identifies the gains and losses recognized on Heartland's derivative instruments designated as cash flow hedges for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Effective Portion						Ineffective Portion
	Recognized in OCI		Reclassified from AOCI into Income				Recognized in Income on Derivatives
	Amount of Gain (Loss)		Category	Amount of Gain (Loss)			Category	Amount of Gain (Loss)
Three Months Ended March 31, 2018
Interest rate swaps	$	1,896	Interest expense	$	(197	)	Other income	$	—
Three Months Ended March 31, 2017
Interest rate swaps	$	533	Interest expense	$	(397	)	Other income	$	—

Fair Value Hedges

Heartland uses interest rate swaps to convert certain long term fixed rate loans to floating rates to hedge interest rate risk exposure. Heartland uses hedge accounting in accordance with ASC 815, with the unrealized gains and losses, representing the change in fair value of the derivative and the change in fair value of the risk being hedged on the related loan, being recorded in the consolidated statements of income. The ineffective portions of the unrealized gains or losses, if any, are recorded in interest income and interest expense in the consolidated statements of income. Heartland uses statistical regression to assess hedge effectiveness, both at the inception of the hedge as well as on a continual basis. The regression analysis involves regressing the periodic change in the fair value of the hedging instrument against the periodic changes in the fair value of the asset being hedged due to changes in the hedge risk.

Heartland was required to pledge $3.2 million and $3.9 million of cash as collateral for these fair value hedges at March 31, 2018, and December 31, 2017, respectively.

The table below identifies the notional amount, fair value and balance sheet category of Heartland's fair value hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category
March 31, 2018
Fair value hedges	$	35,436	$	(105	)	Other liabilities
December 31, 2017
Fair value hedges	$	35,635	$	(999	)	Other liabilities

The table below identifies the gains and losses recognized on Heartland's fair value hedges for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Fair value hedges	$	894	Interest income
Three Months Ended March 31, 2017
Fair value hedges	$	194	Interest income

Embedded Derivatives

Heartland has fixed rate loans with embedded derivatives. The loans contain terms that affect the cash flows or value of the loan similar to a derivative instrument, and therefore are considered to contain an embedded derivative. The embedded derivatives are bifurcated from the loans because the terms of the derivative instrument are not clearly and closely related to the loans. The embedded derivatives are recorded at fair value on the consolidated balance sheets as a part of other assets, and changes in the fair value are a component of noninterest income. The table below identifies the notional amount, fair value and balance sheet category of Heartland's embedded derivatives at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded derivatives	$	13,907	$	461	Other assets
December 31, 2017
Embedded derivatives	$	14,045	$	738	Other assets

The table below identifies the gains and losses recognized on Heartland's embedded derivatives for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded derivatives	$	277	Other noninterest income
Three Months Ended March 31, 2017
Embedded derivatives	$	117	Other noninterest income

In conjunction with the CIC Bancshares, Inc. transaction on February 5, 2016, Heartland assumed convertible subordinated debt. The subordinated debt has a face value of $2.0 million, and the embedded conversion option allows the holder to convert the debt to Heartland common equity in any increment and at the discretion of the holder. The conversion option is bifurcated from the debt because the terms of the conversion option are not clearly and closely related to the terms of the debt. On February 5, 2016, the total number of shares to be issued upon conversion was 73,394.

At March 31, 2018, and December 31, 2017, the remaining shares to be issued upon conversion totaled zero. During 2017, all of the remaining convertible subordinated debt was converted to common stock, resulting in the issuance of 20,481 shares of common stock. The embedded conversion option was reported at fair value on the consolidated balance sheets using the Black-Scholes model. The following table identifies, in thousands, the notional amount, fair value, balance sheet category and income statement category for the change in fair value of the embedded conversion option as of March 31, 2018, and December 31, 2017:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded conversion option	$	—	$	—	Other liabilities
December 31, 2017
Embedded conversion option	$	—	$	—	Other liabilities

The table below identifies the gains and losses recognized on Heartland's embedded conversion options for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded conversion option	$	—	Other noninterest income
Three Months Ended March 31, 2017
Embedded conversion option	$	97	Other noninterest income

Back-to-Back Loan Swaps

Heartland has interest rate swap loan relationships with customers to meet their financing needs. Upon entering into these loan swaps, Heartland enters into offsetting positions with counterparties in order to minimize interest rate risk. These back-to-back loan swaps qualify as free standing financial derivatives with the fair values reported in other assets and other liabilities on the consolidated balance sheets. Heartland was required to post $495,000 and $1.6 million as of March 31, 2018, and December 31, 2017, respectively, as collateral related to these back-to-back swaps. Heartland's counterparties were required to pledge $1.6 million at March 31, 2018, and $190,000 at December 31, 2017. Any gains and losses on these back-to-back swaps are recorded in noninterest income on the consolidated statements of income, and for the three months ended March 31, 2018 and March 31, 2017, no gain or loss was recognized. The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as loan swaps at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Weighted Average Receive Rate		Weighted Average Pay Rate
March 31, 2018
Customer interest rate swaps	$	162,882	$	3,763		Other assets	4.82	%	4.73	%
Customer interest rate swaps	162,882		(3,763		)	Other liabilities	4.73		4.82
December 31, 2017
Customer interest rate swaps	$	126,766	$	2,377		Other assets	4.70	%	4.03	%
Customer interest rate swaps	126,766		(2,377		)	Other liabilities	4.03		4.70

Other Free Standing Derivatives

Heartland has entered into interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans and mortgage backed securities that are considered derivative instruments. Heartland enters into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on the commitments to fund the loans as well as on residential mortgage loans available for sale. The fair value of these commitments is recorded on the consolidated balance sheets, with the changes in fair value recorded in the consolidated statements of income as a component of gains on sale of loans held for sale. These derivative contracts are designated as free standing derivative contracts and are not designated against specific assets and liabilities on the consolidated balance sheets or forecasted transactions and therefore do not qualify for hedge accounting treatment. Heartland was required to pledge collateral of $203,000 at March 31, 2018, and $20,000 at December 31, 2017. Heartland's counterparties were required to pledge $0 and $29,000 at March 31, 2018, and December 31, 2017, respectively, as collateral for these forward commitments.

Heartland acquired undesignated interest rate swaps in 2015. These swaps were entered into primarily for the benefit of customers seeking to manage their interest rate risk and are not designated against specific assets or liabilities on the consolidated balance sheet or forecasted transactions and therefore do not qualify for hedge accounting in accordance with ASC 815. These swaps are carried at fair value on the consolidated balance sheets as a component of other liabilities, with changes in the fair value recorded as a component of other noninterest income.

The table below identifies the balance sheet category and fair values of Heartland's other free standing derivative instruments not designated as hedging instruments at March 31, 2018, and December 31, 2017, in thousands:

	Balance Sheet Category	Notional Amount		Fair Value
March 31, 2018
Interest rate lock commitments (mortgage)	Other assets	$	65,591	$	1,959
Forward commitments	Other assets	55,118		283
Forward commitments	Other liabilities	91,625		(320		)
Undesignated interest rate swaps	Other liabilities	13,907		(461		)
December 31, 2017
Interest rate lock commitments (mortgage)	Other assets	$	53,588	$	1,738
Forward commitments	Other assets	37,286		80
Forward commitments	Other liabilities	118,632		(232		)
Undesignated interest rate swaps	Other liabilities	14,045		(738		)

The table below identifies the income statement category of the gains and losses recognized in income on Heartland's other free standing derivative instruments not designated as hedging instruments for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Income Statement Category	Gain (Loss) Recognized
Three Months Ended March 31, 2018
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	17
Forward commitments	Net gains on sale of loans held for sale	115
Undesignated interest rate swaps	Other noninterest income	277
Three Months Ended March 31, 2017
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	1,062
Forward commitments	Net gains on sale of loans held for sale	(2,739		)
Undesignated interest rate swaps	Other noninterest income	117

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Fair Value

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value

FAIR VALUE

Heartland utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Securities available for sale, trading securities and derivatives are recorded in the consolidated balance sheets at fair value on a recurring basis. Additionally, from time to time, Heartland may be required to record at fair value other assets on a nonrecurring basis such as loans held for sale, loans held to maturity and certain other assets including, but not limited to, mortgage servicing rights, commercial servicing rights and other real estate owned. These nonrecurring fair value adjustments typically involve application of the lower of cost or fair value accounting or write-downs of individual assets.

Fair Value Hierarchy

Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.

Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for all significant assumptions are observable in the market.

Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis.

Assets

Securities Available for Sale and Held to Maturity

Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost and are recorded at fair value only to the extent a decline in fair value is determined to be other-than-temporary. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage and asset-backed securities and private collateralized mortgage obligations, municipal bonds and corporate debt securities. On a quarterly basis, a secondary independent pricing service is used for the securities portfolio to validate the pricing from Heartland's primary pricing service.

Loans Held for Sale

Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, Heartland classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2.

Loans Held to Maturity

Heartland does not record loans held to maturity at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment in accordance with ASC 310. The fair value of impaired loans is measured using one of the following impairment methods: 1) the present value of expected future cash flows discounted at the loan's effective interest rate or 2) the observable market price of the loan or 3) the fair value of the collateral if the loan is collateral dependent. In accordance with ASC 820, impaired loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy.

Premises, Furniture and Equipment Held for Sale

Heartland values premises, furniture and equipment held for sale based on third-party appraisals less estimated disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from Realtors or persons involved in selling bank premises, furniture and equipment, in determining the fair value of particular properties. Accordingly, the valuation of premises, furniture and equipment held for sale is subject to significant external and internal judgment. Heartland periodically reviews premises, furniture and equipment held for sale to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. Premises, furniture and equipment held for sale are classified as nonrecurring Level 3 in the fair value hierarchy.

Mortgage Servicing Rights

Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its mortgage servicing rights. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of the assumptions in the discounted cash flow analysis require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a fair value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs.

Commercial Servicing Rights

Commercial servicing rights assets represent the value associated with servicing commercial loans guaranteed by the Small Business Administration and the United States Department of Agriculture that have been sold with servicing retained by Heartland. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its commercial servicing rights. The fair value for servicing assets is determined through market prices for comparable servicing contracts, when available, or through a valuation model that calculates the present value of estimated future net servicing income. Inputs utilized include discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Commercial servicing rights are subject to impairment testing, and the carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. If the valuation model reflects a fair value less than the carrying value, commercial servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies commercial servicing rights as nonrecurring with Level 3 measurement inputs.

Derivative Financial Instruments

Heartland's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, Heartland incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, Heartland has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although Heartland has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2018, and December 31, 2017, Heartland has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, Heartland has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Interest rate lock commitments

Heartland uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy.

Forward commitments

The fair value of forward commitments are estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that Heartland has the ability to access and are classified in Level 2 of the fair value hierarchy.

Other Real Estate Owned

Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. Heartland periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3 of the fair value hierarchy.

The table below presents Heartland's assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2018, and December 31, 2017, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:

	Total Fair Value		Level 1		Level 2		Level 3
March 31, 2018
Assets
Securities available for sale
U.S. government corporations and agencies	$	11,188	$	9,421	$	1,767	$	—
Mortgage and asset-backed securities	1,647,604		—		1,647,604		—
Obligations of states and political subdivisions	352,180		—		352,180		—
Corporate debt securities	—		—		—		—
Equity securities	16,693		—		16,693		—
Derivative financial instruments(1)	6,265		—		6,265		—
Interest rate lock commitments	1,959		—		—		1,959
Forward commitments	283		—		283		—
Total assets at fair value	$	2,036,172	$	9,421	$	2,024,792	$	1,959
Liabilities
Derivative financial instruments(2)	$	4,709	$	—	$	4,709	$	—
Forward commitments	320		—		320		—
Total liabilities at fair value	$	5,029	$	—	$	5,029	$	—
December 31, 2017
Assets
Securities available for sale
U.S. government corporations and agencies	$	5,328	$	3,484	$	1,844	$	—
Mortgage and asset-backed securities	1,753,736		—		1,753,736		—
Obligations of states and political subdivisions	441,015		—		441,015		—
Equity securities	16,674		—		16,674		—
Derivative financial instruments(1)	3,933		—		3,933		—
Interest rate lock commitments	1,738		—		—		1,738
Forward commitments	80		—		80		—
Total assets at fair value	$	2,222,504	$	3,484	$	2,217,282	$	1,738
Liabilities
Derivative financial instruments(2)	$	5,167	$	—	$	5,167	$	—
Forward commitments	232		—		232		—
Total liabilities at fair value	$	5,399	$	—	$	5,399	$	—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

The tables below present Heartland's assets that are measured at fair value on a nonrecurring basis, in thousands:

	Fair Value Measurements at March 31, 2018
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	2,923	$	—	$	—	$	2,923	$	—
Commercial real estate	8,316		—		—		8,316		—
Agricultural and agricultural real estate	8,041		—		—		8,041		—
Residential real estate	1,421		—		—		1,421		4
Consumer	1,721		—		—		1,721		—
Total collateral dependent impaired loans	$	22,422	$	—	$	—	$	22,422	$	4
Loans held for sale	$	24,376	$	—	$	24,376	$	—	$	288
Other real estate owned	$	11,801	$	—	$	—	$	11,801	$	16
Premises, furniture and equipment held for sale	$	1,477	$	—	$	—	$	1,477	$	(115	)
Commercial servicing rights	$	272	$	—	$	—	$	272	$	2

	Fair Value Measurements at December 31, 2017
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	3,212	$	—	$	—		$	3,212	$	1,119
Commercial real estate	9,480		—		—			9,480		322
Agricultural and agricultural real estate	8,406		—		—			8,406		2,028
Residential real estate	1,137		—		—			1,137		—
Consumer	1,234		—		—			1,234		—
Total collateral dependent impaired loans	$	23,469	$	—	$	—	—	$	23,469	$	3,469
Loans held for sale	$	44,560	$	—	$	44,560		$	—	$	190
Other real estate owned	$	10,777	$	—	$	—		$	10,777	$	737
Premises, furniture and equipment held for sale	$	1,977	$	—	$	—		$	1,977	$	192
Commercial servicing rights	$	291	$	—	$	—		$	291	$	(21	)

The following tables present additional quantitative information about assets measured at fair value and for which Heartland has utilized Level 3 inputs to determine fair value, in thousands:

	Fair Value at 3/31/2018		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,959	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,477		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial servicing rights	272		Discounted cash flows	Third party valuation	(3)
Other real estate owned	11,801		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	2,923		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial real estate	8,316		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Agricultural and agricultural real estate	8,041		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,421		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,721		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-14%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

	Fair Value at 12/31/2017		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,738	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,977		Modified appraised value	Third party appraisal	(2) 0-10%(4)
Commercial servicing rights	291		Discounted cash flows	Third party valuation	(3)
Other real estate owned	10,777		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	3,212		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-15%(4)
Commercial real estate	9,480		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Agricultural and agricultural real estate	8,406		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,137		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,234		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-12%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments measured on a recurring basis, are summarized in the following table, in thousands:

	For the Three Months Ended March 31, 2018			For the Year Ended December 31, 2017
Balance at January 1,	$	1,738		$	2,790
Total gains (losses) included in earnings	17			(1,479		)
Issuances	492			1,875
Settlements	(288		)	(1,448		)
Balance at period end	$	1,959		$	1,738

Gains included in gains (losses) on sale of loans held for sale attributable to interest rate lock commitments held at March 31, 2018, and December 31, 2017, were $2.0 million and $1.7 million, respectively.

The tables below summarize the estimated fair value of Heartland's financial instruments as defined by ASC 825 as of March 31, 2018, and December 31, 2017, in thousands. The carrying amounts in the following tables are recorded in the consolidated balance sheets under the indicated captions. In accordance with ASC 825, the assets and liabilities that are not financial instruments are not included in the disclosure, such as the value of the commercial and mortgage servicing rights, premises, furniture and equipment, premises, furniture and equipment held for sale, OREO, goodwill, and other intangibles and other liabilities.

Heartland does not believe that the estimated information presented herein is representative of the earnings power or value of Heartland. The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of Heartland to create value through loan origination, deposit gathering or fee generating activities. Many of the estimates presented herein are based upon the use of highly subjective information and assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.

					Fair Value Measurements at March 31, 2018
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	266,346	$	266,346	$	266,346	$	—	$	—
Time deposits in other financial institutions	6,297		6,297		6,297		—		—
Securities:
Available for sale	2,027,665		2,027,665		9,421		2,018,244		—
Held to maturity	249,766		258,638		—		258,638		—
Other investments	22,982		22,982		—		22,982		—
Loans held for sale	24,376		24,376		—		24,376		—
Loans, net:
Commercial	1,786,838		1,766,760		—		1,763,837		2,923
Commercial real estate	3,298,798		3,280,785		—		3,272,469		8,316
Agricultural and agricultural real estate	514,471		508,582		—		500,541		8,041
Residential real estate	621,295		614,234		—		612,813		1,421
Consumer	465,957		464,793		—		463,072		1,721
Total Loans, net	6,687,359		6,635,154		—		6,612,732		22,422
Cash surrender value on life insurance	143,444		143,444		—		143,444		—
Derivative financial instruments(1)	6,265		6,265		—		6,265		—
Interest rate lock commitments	1,959		1,959		—		—		1,959
Forward commitments	283		283		—		283		—
Financial liabilities:
Deposits
Demand deposits	3,094,457		3,094,457		—		3,094,457		—
Savings deposits	4,536,106		4,536,106		—		4,536,106		—
Time deposits	910,977		910,977		—		910,977		—
Short term borrowings	131,240		131,240		—		131,240		—
Other borrowings	276,118		276,193		—		276,193		—
Derivative financial instruments(2)	4,709		4,709		—		4,709		—
Forward commitments	320		320		—		320		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

					Fair Value Measurements at December 31, 2017
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	196,003	$	196,003	$	196,003	$	—	$	—
Time deposits in other financial institutions	9,820		9,820		9,820		—		—
Securities:
Available for sale	2,216,753		2,216,753		3,484		2,213,269		—
Held to maturity	253,550		265,494		—		265,494		—
Other investments	22,563		22,563		—		22,563		—
Loans held for sale	44,560		44,560		—		44,560		—
Loans, net:
Commercial	1,628,043		1,617,956		—		1,614,744		3,212
Commercial real estate	3,140,427		3,132,542		—		3,123,062		9,480
Agricultural and agricultural real estate	508,075		508,987		—		500,581		8,406
Residential real estate	620,939		614,667		—		613,530		1,137
Consumer	438,294		440,820		—		439,586		1,234
Total Loans, net	6,335,778		6,314,972		—		6,291,503		23,469
Cash surrender value on life insurance	142,818		142,818		—		142,818		—
Derivative financial instruments(1)	3,933		3,933		—		3,933		—
Interest rate lock commitments	1,738		1,738		—		—		1,738
Forward commitments	80		80		—		80		—
Financial liabilities:
Deposits
Demand deposits	2,983,128		2,983,128		—		2,983,128		—
Savings deposits	4,240,328		4,240,328		—		4,240,328		—
Time deposits	923,453		923,453		—		923,453		—
Short term borrowings	324,691		324,691		—		324,691		—
Other borrowings	285,011		285,609		—		285,609		—
Derivative financial instruments(2)	5,167		5,167		—		5,167		—
Forward commitments	232		232		—		232		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

Cash and Cash Equivalents — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.

Time Deposits in Other Financial Institutions — The carrying amount is a reasonable estimate of fair value due to the short-term nature of these instruments.

Securities —For securities either held to maturity, available for sale or trading, fair value equals quoted market price if available. If a quoted market price is not available, fair value is estimated using quoted market prices for similar securities. For Level 3 securities, Heartland utilizes independent pricing provided by third party vendors or brokers.

Other Investments — Fair value measurement of other investments, which consists primarily of FHLB stock, are based on their redeemable value, which is at cost due to the restrictions placed on their transferability. The market for these securities is restricted to the issuer of the stock and subject to impairment evaluation.

Loans — Beginning in the first quarter of 2018, the fair value of loans were determined using an exit price methodology as prescribed by ASU 2016-01, which was effective on January 1, 2018. The exit price estimation of fair value is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and a discount rate based on the relative risk of the cash flows. Other considerations include the loan type, remaining life of the loan and credit risk. In comparison, loan fair values as of December 31, 2017, were estimated based on an entrance price methodology, which discounts future cash flows using the current rates at which a similar loan would be made to borrowers with similar credit ratings and for the same remaining maturities. The fair value of non-impaired loans as of March 31, 2018, and December 31, 2017, are not comparable.

The fair value of impaired loans is measured using the fair value of the underlying collateral. The fair value of loans held for sale is estimated using quoted market prices.

Interest Rate Lock Commitments — The fair value of interest rate lock commitments is estimated using an internal valuation model, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated closing ratio based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment group.

Forward Commitments — The fair value of these instruments is estimated using an internal valuation model, which includes current trade pricing for similar financial instruments.

Derivative Financial Instruments — The fair value of all derivatives is estimated based on the amount that Heartland would pay or would be paid to terminate the contract or agreement, using current rates and prices, and, when appropriate, the current creditworthiness of the counter-party.

Deposits — The fair value of demand deposits, savings accounts and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value.

Short-term and Other Borrowings—Rates currently available to Heartland for debt with similar terms and remaining maturities are used to estimate fair value of existing debt.

Commitments to Extend Credit, Unused Lines of Credit and Standby Letters of Credit — Based upon management's analysis of the off balance sheet financial instruments, there are no significant unrealized gains or losses associated with these financial instruments based upon review of the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties.

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Revenue

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue

REVENUE

On January 1, 2018, Heartland adopted ASU 2014-09, "Revenue from Contracts with Customers" (Topic 606), and all subsequent ASUs that modified Topic 606. As stated in Note 1, the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with Topic 605.

Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with loan servicing income, bank owned life insurance, derivatives and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as service charges and fees, trust fees, and brokerage and insurance commissions. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of Heartland's revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below.

Service Charges and Fees

Service charges and fees consist of revenue generated from deposit account related service charges and fees, overdraft fees, customer service fees, credit card fee income, debit card income and other service charges and fees.

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders and other deposit account related fees. Heartland's performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees, including overdraft fees, are largely transactional based, and therefore, the performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts.

Customer service fees and other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. Heartland's performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month.

Credit card fee income and debit card income are comprised of interchange fees, ATM fees, and merchant services income. Credit card fee income and debit card income are earned whenever the banks' debit and credit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a bank cardholder uses an ATM that is not owned by one of Heartland's banks or a non-bank cardholder uses Heartland-owned ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees.

Trust Fees

Trust fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. Heartland's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the average daily market value or month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days before or after month end through a direct charge to customers’ accounts. Heartland does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. Heartland's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered.

Brokerage and Insurance Commissions

Brokerage commission primarily consist of commissions related to broker-dealer contracts. The contracts are between the customer and the broker-dealer, and Heartland satisfies its performance obligation and earns commission when the transactions are completed. The recognition of revenue is based on a defined fee schedule and does not require significant judgment. Payment is received shortly after services are rendered. Insurance commissions are related to commissions received directly from the insurance carrier. Heartland acts as an insurance agent between the customer and the insurance carrier. Heartland's performance obligations and associated fee and commission income are defined with each insurance product with the insurance company. When insurance payments are received from customers, a portion of the payment is recognized as commission revenue.

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017
In-scope of Topic 606
Service charges and fees
Service charges and fees on deposit accounts	$	2,618		$	2,160
Overdraft fees	2,208			2,193
Customer service fees	77			49
Credit card fee income	2,190			2,033
Debit card income	2,985			3,021
Other service charges	1			1
Total service charges and fees	10,079			9,457
Trust fees	4,680			3,631
Brokerage and insurance commissions	907			1,036
Total noninterest income in-scope of Topic 606	15,666			14,124
Out-of-scope of Topic 606
Loan servicing income	1,754			1,724
Securities gains, net	1,441			2,482
Unrealized loss on equity securities, net	(28		)	—
Net gains on sale of loans held for sale	4,051			6,147
Valuation adjustment on commercial servicing rights	(2		)	5
Income on bank owned life insurance	614			617
Other noninterest income	1,220			794
Total noninterest income out-of-scope of Topic 606	9,050			11,769
Total noninterest income	$	24,716		$	25,893

Contract Balances

A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. Heartland's noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after Heartland satisfies its performance obligation and revenue is recognized. Heartland does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018, and December 31, 2017, Heartland did not have any significant contract balances.

Contract Acquisition Costs

In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). Heartland utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, Heartland did not capitalize any contract acquisition costs.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

The interim unaudited consolidated financial statements contained herein should be read in conjunction with the audited consolidated financial statements and accompanying notes to the consolidated financial statements for the fiscal year ended December 31, 2017, included in the Form 10-K of Heartland Financial USA, Inc. ("Heartland") filed with the Securities and Exchange Commission ("SEC") on February 28, 2018. Footnote disclosures to the interim unaudited consolidated financial statements which would substantially duplicate the disclosure contained in the footnotes to the audited consolidated financial statements have been omitted.

The financial information of Heartland included herein has been prepared in accordance with U.S. generally accepted accounting principles for interim financial reporting and has been prepared pursuant to the rules and regulations for reporting on Form 10-Q and Rule 10-01 of Regulation S-X. Such information reflects all adjustments (consisting of normal recurring adjustments), that are, in the opinion of management, necessary for a fair presentation of the financial position and results of operations for the periods presented. The results of the interim period ended March 31, 2018, are not necessarily indicative of the results expected for the year ending December 31, 2018.

Earnings Per Share

Basic earnings per share is determined using net income available to common stockholders and weighted average common shares outstanding. Diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average common shares and assumed incremental common shares issued.

Stock-Based Compensation

Heartland may grant, through its Nominating and Compensation Committee (the "Compensation Committee"), non-qualified and incentive stock options, stock appreciation rights, stock awards, restricted stock, restricted stock units and cash incentive awards, under its 2012 Long-Term Incentive Plan (the "Plan"). The Plan was originally approved by stockholders in May 2012 and was amended effective March 8, 2016, to increase the number of shares of common stock authorized for issuance and make certain other changes to the Plan. As of March 31, 2018, 459,893 shares of common stock were available for issuance under future awards that may be granted under the Plan to employees and directors of, and service providers to, Heartland or its subsidiaries.

Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 718, "Compensation-Stock Compensation" requires the measurement of the cost of employee services received in exchange for an award of equity instruments based upon the fair value of the award on the grant date. The cost of the award is based upon its fair value estimated on the date of grant and recognized in the consolidated statements of income over the vesting period of the award. The fair market value of restricted stock and restricted stock units is based on the fair value of the underlying shares of common stock on the date of grant. The fair value of stock options is estimated on the date of grant using the Black-Scholes model. Forfeitures are accounted for as they occur.

The amount of tax benefit related to the exercise, vesting and forfeiture of equity-based awards reflected as a tax benefit in Heartland's income tax expense was $611,000 and $888,000 during the three months ended March 31, 2018 and 2017, respectively.

Restricted Stock Units

The Plan permits the Compensation Committee to grant restricted stock units ("RSUs"). In the first quarter of 2018, the Compensation Committee granted time-based RSUs with respect to 52,153 shares of common stock, and in the first quarter of 2017, the Compensation Committee granted time-based RSUs with respect to 55,665 shares of common stock to selected officers and employees. The time-based RSUs represent the right, without payment, to receive shares of Heartland common stock on a specified date in the future. The time-based RSUs granted in 2018 vest over three years in equal installments on March 6 of each of the three years following the year of the grant, while the 2017 time-based RSUs vest in equal installments on January 19 of each of the three years following the year of the grant. The time-based RSUs may also vest upon death or disability, upon a change in control or upon a "qualified retirement" (as defined in the RSU agreement). The retiree is required to sign a non-solicitation agreement as a condition to vesting.

In addition to the time-based RSUs referenced in the preceding paragraph, the Compensation Committee granted one-year performance-based RSUs with respect to 18,988 shares of common stock in the first quarter of 2018, and 27,570 shares of common stock in the first quarter of 2017. These performance-based RSUs are earned based on satisfaction of performance targets for the fiscal years ended December 31, 2018, and December 31, 2017, respectively, and then fully vest on a specified date in the third calendar year following the year of the initial grant.

The Compensation Committee also granted three-year performance-based RSUs with respect to 16,108 shares and 9,032 shares of common stock in the first quarter of 2018 and 2017, respectively. These performance-based RSUs will be earned based on satisfaction of performance targets for the three-year performance period ended December 31, 2020, and December 31, 2019, respectively. These performance-based RSUs or a portion thereof may vest in 2021 and 2020, respectively, after measurement of performance in relation to the performance targets.

The one-year and three-year performance-based RSUs vest to the extent that they are earned upon death or disability or upon a "qualified retirement." Upon a change in control, performance-based RSUs shall become vested at 100% of target if the RSU obligations are not assumed by the successor company. If the successor company does assume the RSU obligations, the 2017 and 2018 performance-based RSUs will vest at 100% of target upon a "Termination of Service" within the period beginning six months prior to a change in control and ending twenty-four months after a change in control.

All of Heartland's RSUs will be settled in common stock upon vesting and are not entitled to dividends until vested.

The Compensation Committee may grant RSUs under the Plan to directors as part of their compensation, to new management level employees at commencement of employment, and to other employees and service providers as incentives.

Subsequent Events

Heartland has evaluated subsequent events that may require recognition or disclosure through the filing date of this Quarterly Report on Form 10-Q with the SEC.

Effect of New Financial Accounting Standards

In May 2014, the FASB issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers." The amendment clarifies the principles for recognizing revenue and develops a common revenue standard. The amendment outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that "an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." In applying the revenue model to contracts within its scope, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract, and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The new guidance does not apply to certain contracts within the scope of other ASC Topics, such as lease contracts, insurance contracts, financing arrangements, financial instruments, guarantees other than product or service warranties and nonmonetary exchanges between entities in the same line of business to facilitate sales to customers. Heartland evaluates noninterest income contracts affected by the new guidance by analyzing contracts and current accounting practices to determine if a change is appropriate. The amendment is largely consistent with existing guidance and current practices; however Heartland had to change the recognition of certain recurring revenue streams within trust and investment management fees. Heartland adopted the accounting standard effective January 1, 2018, as required, using a modified retrospective approach. However, the adoption of these amendments did not have a significant effect on Heartland's results of operations, financial position and liquidity other than expanded disclosure requirements. See Note 9, "Revenue," for further details regarding Heartland's revenue.

In January 2016, the FASB issued guidance ASU 2016-01, "Recognition and Measurement of Financial Assets and Financial Liabilities." The amendments in ASU 2016-01 to Subtopic 825-10, Financial Instruments, contain the following elements: (1) require equity investments to be measured at fair value with changes in fair value recognized in net income; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; (3) eliminates the requirement for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (5) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or accompanying notes to the financial statements; and (7) clarifies that the entity should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the entity's other deferred tax assets. The amendments are effective for fiscal years beginning after December 15, 2017, and for interim periods within those fiscal years. Except for the early application of the amendment noted in item (5) above, early adoption of the amendments in this update is not permitted. Entities are required to and Heartland applied the amendment by means of a cumulative-effect adjustment as of the beginning of the fiscal year of adoption, with the exception of the amendment related to equity securities without readily determinable fair values, which are to be applied prospectively to equity investments that exist as of the adoption date. Heartland adopted the accounting standard on January 1, 2018, as required, and the adoption of these amendments did not have a material impact on its results of operations, financial position and liquidity. Heartland reclassified $280,000 from accumulated other comprehensive income to retained earnings on January 1, 2018, related to the fair value of its equity investments.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)." Topic 842 requires a lessee to recognize leases on-balance sheet and disclose key information about leasing arrangements. The new standard establishes a right-of-use model (ROU) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as financing or operating, with classification affecting the pattern and classification of expense recognition in the income statement. The amendment is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and will be applied on a modified retrospective basis. Heartland leases certain properties and equipment under operating leases that will result in recognition of lease assets and lease liabilities on the consolidated balance sheets under the ASU; however the majority of Heartland's properties and equipment are owned, not leased. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. Early adoption is permitted. In January 2018, the FASB issued an amendment to provide entities with the optional practical expedient to not evaluate existing or expired land easements that were previously not accounted for as leases under Topic 840. Heartland intends to adopt the accounting standard in 2019, as required, and does not expect the adoption of this standard to have a significant impact on its results of operations, financial position and liquidity. Heartland has signed an agreement with a cloud-based lease software provider, and implementation of the software started in the first quarter of 2018.

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326)." The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The amendments in this ASU indicate that an entity should not use the length of time a security has been in an unrealized loss position to avoid recording a credit loss. In addition, in determining whether a credit loss exists, the amendments in this ASU also remove the requirements to consider the historical and implied volatility of the fair value of a security and recoveries or declines in fair value after the balance sheet date. The amendment is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. An entity may adopt the amendments earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Heartland intends to adopt the accounting standard in 2020, as required, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity. Upon adoption of ASU 2016-13, a cumulative-effect adjustment to retained earnings will be recorded as of the beginning of the first reporting period in which the guidance is effective. Heartland has formed an internal committee to assess and implement the standard, and Heartland has entered into an agreement with a third party vendor to evaluate potential methodologies and data.

In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments." The amendments in this update address eight specific cash flow issues with the objective of reducing the existing diversity in practice. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes the interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The amendments in this update should be applied using a retrospective transition method to each period presented. Heartland adopted this ASU on January 1, 2018, as required, and the adoption of these amendments did not have a material impact on Heartland's results of operations, financial position and liquidity.

In October 2016, the FASB issued ASU 2016-16, "Income Taxes (Topic 740) - Intra-Entity Transfer of Assets Other Than Inventory." The amendment requires an entity to recognize income tax consequences on an intra-entity transfer of an asset other than inventory at the time the transaction occurs. The amendment is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The amendments must be applied and Heartland applied these amendments using a modified retrospective basis. Heartland adopted this ASU on January 1, 2018, as required, and the adoption of this amendment did not have a material impact on Heartland's results of operations, financial position and liquidity.

In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business," which narrows the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction involves an asset or a business. ASU 2017-01 is effective for public business entities in annual periods beginning after December 15, 2017, including interim periods therein. Heartland adopted ASU 2017-01 on January 1, 2018, as required, and the adoption did not have a material impact on Heartland's results of operations, financial position, and liquidity.

In January 2017, the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350)." This amendment is to simplify the subsequent measurement of goodwill by eliminating step two from the goodwill impairment test. Instead, an entity will perform only step one of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing the impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss recognized cannot exceed the total amount of goodwill allocated to that reporting unit. An entity will still have the option to perform a qualitative assessment for a reporting unit to determine if the quantitative step one impairment test is necessary. This amendment is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied prospectively. Early adoption is permitted, including in an interim period for impairment tests performed after January 1, 2017. Heartland intends to adopt this ASU in the third quarter of 2020, consistent with the annual impairment test as of September 30, 2020, and is currently evaluating the potential impact of this guidance on its results of operations, financial position and liquidity.

In March 2017, the FASB issued ASU 2017-08, "Receivables - Nonrefundable Fee and Other Costs (Subtopic 310-20)." These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount. Discounts continue to be amortized to maturity. These amendments are effective for public business entities for fiscal years and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If any entity early adopts the amendments in an interim period, any adjustments must be reflected as of the beginning of the fiscal year that includes the interim period. The amendments must be applied and Heartland intends to apply these amendments on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Heartland intends to adopt this ASU in 2019, as required, and is currently evaluating the potential impact on its results of operations, financial position and liquidity.

In May 2017, the FASB issued ASU 2017-09, "Compensation - Stock Compensation (Topic 718)." The amendments provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity should account for the effects of a modification unless all the following are met: (1) the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the modified award is the same as the fair value (or calculated value or intrinsic value, if such an alternative measurement method is used) of the original award immediately before the original award is modified. If the modification does not affect any of the inputs to the valuation technique that the entity uses to value the award, the entity is not required to estimate the value immediately before and after the modification; (2) the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and (3) the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments are effective for annual periods and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted, including adoption in any interim periods for public business entities for reporting periods for which financial statements have not yet been issued. The amendments should be applied and Heartland applied these amendments prospectively to an award modified on or after the adoption date. Heartland adopted this ASU on January 1, 2018, as required, the adoption did not have a material impact to its results of operations, financial position and liquidity because Heartland has not typically modified share-based payment awards after the original award has been granted.

In August 2017, the FASB issued ASU 2017-12, "Derivatives and Hedging:Targeted Improvements to Accounting for Hedging Activities." The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. ASU 2017-12 is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. ASU 2017-12 requires a modified retrospective transition method in which Heartland will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the consolidated balance sheet as of the date of adoption. Heartland intends to adopt this ASU in 2019, as required, and does not believe there will be a material impact to its results of operations, financial position and liquidity.

In February 2018, the FASB issued ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220)." This ASU allows for the option to reclassify from accumulated other comprehensive income ("AOCI") to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate in the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017. The legislation included a reduction to the corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the historical corporate income tax rate and the newly enacted 21 percent corporate income tax rate. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted for public businesses for reporting periods for which financial statements have not yet been issued. Heartland adopted the guidance as of December 31, 2017. The adoption of this ASU was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $4.5 million increase to retained earnings and a corresponding decrease to AOCI on December 31, 2017.

Fair Value Hierarchy

Under ASC 820, assets and liabilities are grouped at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1 — Valuation is based upon quoted prices for identical instruments in active markets.

Level 2 — Valuation is based upon quoted prices for similar instruments in active markets, or similar instruments in markets that are not active, and model-based valuation techniques for all significant assumptions are observable in the market.

Level 3 — Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

The following is a description of valuation methodologies used for assets and liabilities recorded at fair value on a recurring or non-recurring basis.

Assets

Securities Available for Sale and Held to Maturity

Securities available for sale are recorded at fair value on a recurring basis. Securities held to maturity are generally recorded at cost and are recorded at fair value only to the extent a decline in fair value is determined to be other-than-temporary. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security's credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, as well as U.S. Treasury securities. Level 2 securities include U.S. government and agency securities, mortgage and asset-backed securities and private collateralized mortgage obligations, municipal bonds and corporate debt securities. On a quarterly basis, a secondary independent pricing service is used for the securities portfolio to validate the pricing from Heartland's primary pricing service.

Loans Held for Sale

Loans held for sale are carried at the lower of cost or fair value on an aggregate basis. The fair value of loans held for sale is based on what secondary markets are currently offering for portfolios with similar characteristics. As such, Heartland classifies loans held for sale subjected to nonrecurring fair value adjustments as Level 2.

Loans Held to Maturity

Heartland does not record loans held to maturity at fair value on a recurring basis. However, from time to time, a loan is considered impaired and an allowance for loan losses is established. Loans for which it is probable that payment of interest and principal will not be made in accordance with the contractual terms of the loan agreement are considered impaired. Once a loan is identified as individually impaired, management measures impairment in accordance with ASC 310. The fair value of impaired loans is measured using one of the following impairment methods: 1) the present value of expected future cash flows discounted at the loan's effective interest rate or 2) the observable market price of the loan or 3) the fair value of the collateral if the loan is collateral dependent. In accordance with ASC 820, impaired loans measured at fair value are classified as nonrecurring Level 3 in the fair value hierarchy.

Premises, Furniture and Equipment Held for Sale

Heartland values premises, furniture and equipment held for sale based on third-party appraisals less estimated disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from Realtors or persons involved in selling bank premises, furniture and equipment, in determining the fair value of particular properties. Accordingly, the valuation of premises, furniture and equipment held for sale is subject to significant external and internal judgment. Heartland periodically reviews premises, furniture and equipment held for sale to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. Premises, furniture and equipment held for sale are classified as nonrecurring Level 3 in the fair value hierarchy.

Mortgage Servicing Rights

Mortgage servicing rights assets represent the value associated with servicing residential real estate loans that have been sold to outside investors with servicing retained. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its mortgage servicing rights. The fair value for servicing assets is determined through discounted cash flow analysis and utilizes discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of the assumptions in the discounted cash flow analysis require a significant degree of management estimation and judgment. Mortgage servicing rights are subject to impairment testing. The carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. For purposes of measuring impairment, the rights are stratified into certain risk characteristics including note type and note term. If the valuation model reflects a fair value less than the carrying value, mortgage servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies mortgage servicing rights as nonrecurring with Level 3 measurement inputs.

Commercial Servicing Rights

Commercial servicing rights assets represent the value associated with servicing commercial loans guaranteed by the Small Business Administration and the United States Department of Agriculture that have been sold with servicing retained by Heartland. Heartland uses the amortization method (i.e., the lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, to determine the carrying value of its commercial servicing rights. The fair value for servicing assets is determined through market prices for comparable servicing contracts, when available, or through a valuation model that calculates the present value of estimated future net servicing income. Inputs utilized include discount rates, prepayment speeds and delinquency rate assumptions as inputs. All of these assumptions require a significant degree of management estimation and judgment. Commercial servicing rights are subject to impairment testing, and the carrying values of these rights are reviewed quarterly for impairment based upon the calculation of fair value as performed by an outside third party. If the valuation model reflects a fair value less than the carrying value, commercial servicing rights are adjusted to fair value through a valuation allowance. Heartland classifies commercial servicing rights as nonrecurring with Level 3 measurement inputs.

Derivative Financial Instruments

Heartland's current interest rate risk strategy includes interest rate swaps. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. To comply with the provisions of ASC 820, Heartland incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, Heartland has considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although Heartland has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2018, and December 31, 2017, Heartland has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, Heartland has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Interest rate lock commitments

Heartland uses an internal valuation model that relies on internally developed inputs to estimate the fair value of its interest rate lock commitments which is based on unobservable inputs that reflect management's assumptions and specific information about each borrower. Interest rate lock commitments are classified in Level 3 of the fair value hierarchy.

Forward commitments

The fair value of forward commitments are estimated using an internal valuation model, which includes current trade pricing for similar financial instruments in active markets that Heartland has the ability to access and are classified in Level 2 of the fair value hierarchy.

Other Real Estate Owned

Other real estate owned ("OREO") represents property acquired through foreclosures and settlements of loans. Property acquired is carried at the fair value of the property at the time of acquisition (representing the property's cost basis), plus any acquisition costs, or the estimated fair value of the property, less disposal costs. Heartland considers third party appraisals, as well as independent fair value assessments from realtors or persons involved in selling OREO, in determining the fair value of particular properties. Accordingly, the valuation of OREO is subject to significant external and internal judgment. Heartland periodically reviews OREO to determine if the fair value of the property, less disposal costs, has declined below its recorded book value and records any adjustments accordingly. OREO is classified as nonrecurring Level 3 of the fair value hierarchy.

Revenue Recognition

On January 1, 2018, Heartland adopted ASU 2014-09, "Revenue from Contracts with Customers" (Topic 606), and all subsequent ASUs that modified Topic 606. As stated in Note 1, the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with Topic 605.

Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with loan servicing income, bank owned life insurance, derivatives and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as service charges and fees, trust fees, and brokerage and insurance commissions. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of Heartland's revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below.

Service Charges and Fees

Service charges and fees consist of revenue generated from deposit account related service charges and fees, overdraft fees, customer service fees, credit card fee income, debit card income and other service charges and fees.

Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders and other deposit account related fees. Heartland's performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees, including overdraft fees, are largely transactional based, and therefore, the performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts.

Customer service fees and other service charges include revenue from processing wire transfers, bill pay service, cashier’s checks, and other services. Heartland's performance obligation for fees, exchange, and other service charges are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month.

Credit card fee income and debit card income are comprised of interchange fees, ATM fees, and merchant services income. Credit card fee income and debit card income are earned whenever the banks' debit and credit cards are processed through card payment networks such as Visa. ATM fees are primarily generated when a bank cardholder uses an ATM that is not owned by one of Heartland's banks or a non-bank cardholder uses Heartland-owned ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees.

Trust Fees

Trust fees are primarily comprised of fees earned from the management and administration of trusts and other customer assets. Heartland's performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the average daily market value or month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days before or after month end through a direct charge to customers’ accounts. Heartland does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. Heartland's performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered.

Brokerage and Insurance Commissions

Brokerage commission primarily consist of commissions related to broker-dealer contracts. The contracts are between the customer and the broker-dealer, and Heartland satisfies its performance obligation and earns commission when the transactions are completed. The recognition of revenue is based on a defined fee schedule and does not require significant judgment. Payment is received shortly after services are rendered. Insurance commissions are related to commissions received directly from the insurance carrier. Heartland acts as an insurance agent between the customer and the insurance carrier. Heartland's performance obligations and associated fee and commission income are defined with each insurance product with the insurance company. When insurance payments are received from customers, a portion of the payment is recognized as commission revenue.

Contract Balances

A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. Heartland's noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after Heartland satisfies its performance obligation and revenue is recognized. Heartland does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018, and December 31, 2017, Heartland did not have any significant contract balances.

Contract Acquisition Costs

In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). Heartland utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, Heartland did not capitalize any contract acquisition costs.

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Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Amounts used in the determination of basic and diluted earnings per share for the three-month periods ended March 31, 2018, and 2017, are shown in the table below:

	Three Months Ended March 31,
(Dollars and number of shares in thousands, except per share data)	2018			2017
Net income	$	23,268		$	18,010
Preferred dividends	(13		)	(19		)
Interest expense on convertible preferred debt	—			5
Net income available to common stockholders	$	23,255		$	17,996
Weighted average common shares outstanding for basic earnings per share	30,442			26,335
Assumed incremental common shares issued upon non-vested restricted stock units	203			293
Weighted average common shares for diluted earnings per share	30,645			26,628
Earnings per common share — basic	$	0.76		$	0.68
Earnings per common share — diluted	$	0.76		$	0.68
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation	—			—

Summary of Status of RSUs

A summary of the RSUs outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Grant Date Fair Value		Shares		Weighted-Average Grant Date Fair Value
Outstanding at January 1	301,578		$	34.74	346,817		$	27.61
Granted	87,249		55.25		92,267		47.50
Vested	(107,553	)	30.79		(103,897	)	24.74
Forfeited	(19,113	)	43.62		(7,765	)	31.03
Outstanding at March 31	262,161		$	42.60	327,422		$	34.04

Summary of Status of Stock Options

A summary of the stock options outstanding as of March 31, 2018 and 2017, and changes during the three months ended March 31, 2018 and 2017, follows:

	2018				2017
	Shares		Weighted-Average Exercise Price		Shares		Weighted-Average Exercise Price
Outstanding at January 1	6,500		$	18.60	26,400		$	18.60
Granted	—		—		—		—
Exercised	(6,500	)	18.60		(5,500	)	18.60
Forfeited	—		—		—		—
Outstanding at March 31	—		$	—	20,900		$	18.60
Options exercisable at March 31	—		$	—	20,900		$	18.60

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Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of Available for Sale Securities

The amortized cost, gross unrealized gains and losses, and estimated fair values of securities available for sale as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
U.S. government corporations and agencies	$	11,254	$	3	$	(69	)	$	11,188
Mortgage and asset-backed securities	1,691,092		3,968		(47,456		)	1,647,604
Obligations of states and political subdivisions	361,475		1,132		(10,427		)	352,180
Total debt securities	2,063,821		5,103		(57,952		)	2,010,972
Equity securities	16,693		—		—			16,693
Total	$	2,080,514	$	5,103	$	(57,952	)	$	2,027,665
December 31, 2017
U.S. government corporations and agencies	$	5,358	$	8	$	(38	)	$	5,328
Mortgage and asset-backed securities	1,785,467		5,856		(37,587		)	1,753,736
Obligations of states and political subdivisions	441,060		4,669		(4,714		)	441,015
Total debt securities	2,231,885		10,533		(42,339		)	2,200,079
Equity securities	16,296		378		—			16,674
Total	$	2,248,181	$	10,911	$	(42,339	)	$	2,216,753

Schedule of Held to Maturity Securities

The amortized cost, gross unrealized gains and losses and estimated fair values of held to maturity securities as of March 31, 2018, and December 31, 2017, are summarized in the table below, in thousands:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
March 31, 2018
Obligations of states and political subdivisions	$	249,766	$	9,699	$	(827	)	$	258,638
Total	$	249,766	$	9,699	$	(827	)	$	258,638
December 31, 2017
Obligations of states and political subdivisions	$	253,550	$	12,460	$	(516	)	$	265,494
Total	$	253,550	$	12,460	$	(516	)	$	265,494

Investments Classified by Contractual Maturity Date

The amortized cost and estimated fair value of debt securities available for sale at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	5,397	$	5,392
Due in 1 to 5 years	56,369		56,209
Due in 5 to 10 years	116,517		112,484
Due after 10 years	194,446		189,283
Total debt securities	372,729		363,368
Mortgage and asset-backed securities	1,691,092		1,647,604
Equity securities	16,693		16,693
Total investment securities	$	2,080,514	$	2,027,665

The amortized cost and estimated fair value of debt securities held to maturity at March 31, 2018, by contractual maturity, are as follows, in thousands. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without penalties.

	March 31, 2018
	Amortized Cost		Estimated Fair Value
Due in 1 year or less	$	2,486	$	2,523
Due in 1 to 5 years	27,627		28,231
Due in 5 to 10 years	104,170		106,538
Due after 10 years	115,483		121,346
Total investment securities	$	249,766	$	258,638

Schedule of Realized Gross Gains (Losses)

Gross gains and losses realized related to the sales of securities available for sale for the three-month periods ended March 31, 2018 and 2017, are summarized as follows, in thousands:

	Three Months Ended March 31,
	2018		2017
Proceeds from sales	$	392,246	$	221,637
Gross security gains	3,013		3,830
Gross security losses	1,572		1,339

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value

The following tables summarize, in thousands, the amount of unrealized losses, defined as the amount by which cost or amortized cost exceeds fair value, and the related fair value of investments with unrealized losses in Heartland's securities portfolio as of March 31, 2018, and December 31, 2017. The investments were segregated into two categories: those that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 months or more. The reference point for determining how long an investment was in an unrealized loss position wasMarch 31, 2017, andDecember 31, 2016, respectively. Securities for which Heartland has taken credit-related other-than-temporary impairment ("OTTI") write-downs are categorized as being "less than 12 months" or "12 months or longer" in a continuous loss position based on the point in time that the fair value declined to below the cost basis and not the period of time since the credit-related OTTI write-down.

Securities available for sale	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
U.S. government corporations and agencies	$	10,685	$	(69	)	$	—	$	—		$	10,685	$	(69	)
Mortgage and asset-backed securities	923,293		(18,459		)	379,672		(28,997		)	1,302,965		(47,456		)
Obligations of states and political subdivisions	177,100		(3,456		)	131,574		(6,971		)	308,674		(10,427		)
Total debt securities	1,111,078		(21,984		)	511,246		(35,968		)	1,622,324		(57,952		)
Total temporarily impaired securities	$	1,111,078	$	(21,984	)	$	511,246	$	(35,968	)	$	1,622,324	$	(57,952	)
December 31, 2017
U.S. government corporations and agencies	$	4,819	$	(38	)	$	—	$	—		$	4,819	$	(38	)
Mortgage and asset-backed securities	851,070		(11,533		)	399,978		(26,054		)	1,251,048		(37,587		)
Obligations of states and political subdivisions	93,040		(667		)	159,180		(4,047		)	252,220		(4,714		)
Total debt securities	948,929		(12,238		)	559,158		(30,101		)	1,508,087		(42,339		)
Total temporarily impaired securities	$	948,929	$	(12,238	)	$	559,158	$	(30,101	)	$	1,508,087	$	(42,339	)

Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value

Securities held to maturity	Less than 12 months					12 months or longer					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
March 31, 2018
Obligations of states and political subdivisions	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
Total temporarily impaired securities	$	30,496	$	(272	)	$	7,907	$	(555	)	$	38,403	$	(827	)
December 31, 2017
Obligations of states and political subdivisions	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)
Total temporarily impaired securities	$	8,512	$	(49	)	$	8,989	$	(467	)	$	17,501	$	(516	)

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Loans (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of Loans

Loans as of March 31, 2018, and December 31, 2017, were as follows, in thousands:

	March 31, 2018			December 31, 2017
Loans receivable held to maturity:
Commercial	$	1,806,683		$	1,646,606
Commercial real estate	3,323,094			3,163,269
Agricultural and agricultural real estate	518,386			511,588
Residential real estate	624,725			624,279
Consumer	474,929			447,484
Gross loans receivable held to maturity	6,747,817			6,393,226
Unearned discount	(1,620		)	(556		)
Deferred loan fees	(182		)	(1,206		)
Total net loans receivable held to maturity	6,746,015			6,391,464
Allowance for loan losses	(58,656		)	(55,686		)
Loans receivable, net	$	6,687,359		$	6,335,778

Allowance for Loan and Lease Losses, Based on Impairment Methodology

The following table shows the balance in the allowance for loan losses at March 31, 2018, and December 31, 2017, and the related loan balances, disaggregated on the basis of impairment methodology, in thousands. Loans evaluated under ASC 310-10-35 include loans on nonaccrual status and troubled debt restructurings, which are individually evaluated for impairment, and other impaired loans deemed to have similar risk characteristics. All other loans are collectively evaluated for impairment under ASC 450-20. Heartland has made no significant changes to the accounting for the allowance for loan losses during 2018.

	Allowance For Loan Losses						Gross Loans Receivable Held to Maturity
	Ending Balance Under ASC 310-10-35		Ending Balance Under ASC 450-20		Total		Ending Balance Evaluated for Impairment Under ASC 310-10-35		Ending Balance Evaluated for Impairment Under ASC 450-20		Total
March 31, 2018
Commercial	$	2,425	$	16,970	$	19,395	$	9,005	$	1,797,678	$	1,806,683
Commercial real estate	736		22,733		23,469		22,920		3,300,174		3,323,094
Agricultural and agricultural real estate	787		3,929		4,716		16,896		501,490		518,386
Residential real estate	386		1,755		2,141		28,324		596,401		624,725
Consumer	1,137		7,798		8,935		6,427		468,502		474,929
Total	$	5,471	$	53,185	$	58,656	$	83,572	$	6,664,245	$	6,747,817
December 31, 2017
Commercial	$	1,613	$	16,485	$	18,098	$	7,415	$	1,639,191	$	1,646,606
Commercial real estate	766		21,184		21,950		23,705		3,139,564		3,163,269
Agricultural and agricultural real estate	546		3,712		4,258		13,304		498,284		511,588
Residential real estate	430		1,794		2,224		27,141		597,138		624,279
Consumer	1,400		7,756		9,156		6,903		440,581		447,484
Total	$	4,755	$	50,931	$	55,686	$	78,468	$	6,314,758	$	6,393,226

Schedule of Financing Receivables, Non Accrual Status

The following table presents nonaccrual loans, accruing loans past due 90 days or more and performing troubled debt restructured loans at March 31, 2018, and December 31, 2017, in thousands:

	March 31, 2018		December 31, 2017
Nonaccrual loans	$	60,644	$	58,272
Nonaccrual troubled debt restructured loans	4,162		4,309
Total nonaccrual loans	$	64,806	$	62,581
Accruing loans past due 90 days or more	$	22	$	830
Performing troubled debt restructured loans	$	3,206	$	6,617

Troubled Debt Restructuring on Loans Modified

The following tables provide information on troubled debt restructured loans that were modified during the three-month periods ended March 31, 2018, and March 31, 2017, dollars in thousands:

	Three Months Ended March 31,
	2018					2017
	Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number of Loans	Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial	—	$	—	$	—	—	$	—	$	—
Commercial real estate	—	—		—		—	—		—
Total commercial and commercial real estate	—	—		—		—	—		—
Agricultural and agricultural real estate	—	—		—		—	—		—
Residential real estate	5	877		752		3	348		348
Consumer	—	—		—		—	—		—
Total	5	$	877	$	752	3	$	348	$	348

The following table shows troubled debt restructured loans for which there was a payment default during the three month periods ended March 31, 2018, and March 31, 2017, that had been modified during the twelve-month period prior to default, in thousands:

	With Payment Defaults During the Following Periods
	Three Months Ended March 31,
	2018			2017
	Number of Loans	Recorded Investment		Number of Loans	Recorded Investment
Commercial	—	$	—	—	$	—
Commercial real estate	—	—		—	—
Total commercial and commercial real estate	—	—		—	—
Agricultural and agricultural real estate	—	—		—	—
Residential real estate	3	519		—	—
Consumer	—	—		—	—
Total	3	$	519	—	$	—

Financing Receivable Credit Quality Indicators

The following table presents loans by credit quality indicator at March 31, 2018, and December 31, 2017, in thousands:

	Pass		Nonpass		Total
March 31, 2018
Commercial	$	1,677,338	$	129,345	$	1,806,683
Commercial real estate	3,146,622		176,472		3,323,094
Total commercial and commercial real estate	4,823,960		305,817		5,129,777
Agricultural and agricultural real estate	442,484		75,902		518,386
Residential real estate	585,886		38,839		624,725
Consumer	461,786		13,143		474,929
Total gross loans receivable held to maturity	$	6,314,116	$	433,701	$	6,747,817
December 31, 2017
Commercial	$	1,552,783	$	93,823	$	1,646,606
Commercial real estate	2,985,501		177,768		3,163,269
Total commercial and commercial real estate	4,538,284		271,591		4,809,875
Agricultural and agricultural real estate	451,539		60,049		511,588
Residential real estate	586,623		37,656		624,279
Consumer	432,936		14,548		447,484
Total gross loans receivable held to maturity	$	6,009,382	$	383,844	$	6,393,226

Past Due Financing Receivables

The following table sets forth information regarding Heartland's accruing and nonaccrual loans at March 31, 2018, and December 31, 2017, in thousands:

	Accruing Loans
	30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Nonaccrual		Total Loans
March 31, 2018
Commercial	$	2,906	$	1,883	$	—	$	4,789	$	1,793,565	$	8,329	$	1,806,683
Commercial real estate	403		740		—		1,143		3,305,043		16,908		3,323,094
Total commercial and commercial real estate	3,309		2,623		—		5,932		5,098,608		25,237		5,129,777
Agricultural and agricultural real estate	1,147		69		22		1,238		500,320		16,828		518,386
Residential real estate	2,891		66		—		2,957		602,927		18,841		624,725
Consumer	2,618		1,477		—		4,095		466,934		3,900		474,929
Total gross loans receivable held to maturity	$	9,965	$	4,235	$	22	$	14,222	$	6,668,789	$	64,806	$	6,747,817
December 31, 2017
Commercial	$	1,246	$	259	$	100	$	1,605	$	1,637,773	$	7,228	$	1,646,606
Commercial real estate	4,769		2,326		—		7,095		3,139,576		16,598		3,163,269
Total commercial and commercial real estate	6,015		2,585		100		8,700		4,777,349		23,826		4,809,875
Agricultural and agricultural real estate	604		134		—		738		497,546		13,304		511,588
Residential real estate	2,022		270		—		2,292		601,120		20,867		624,279
Consumer	4,734		943		730		6,407		436,493		4,584		447,484
Total gross loans receivable held to maturity	$	13,375	$	3,932	$	830	$	18,137	$	6,312,508	$	62,581	$	6,393,226

Summary of Impaired Loans

At March 31, 2018, and December 31, 2017, the carrying amount of loans acquired since 2015 consist of purchased impaired and nonimpaired loans as summarized in the following table, in thousands:

	March 31, 2018						December 31, 2017
	Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans		Impaired Purchased Loans		Non Impaired Purchased Loans		Total Purchased Loans
Commercial	$	3,142	$	262,107	$	265,249	$	952	$	187,375	$	188,327
Commercial real estate	2,474		1,078,724		1,081,198		2,572		1,052,469		1,055,041
Agricultural and agricultural real estate	—		26		26		—		1,242		1,242
Residential real estate	199		181,020		181,219		214		173,909		174,123
Consumer loans	—		78,613		78,613		—		51,292		51,292
Total loans	$	5,815	$	1,600,490	$	1,606,305	$	3,738	$	1,466,287	$	1,470,025

The following tables present, by category of loan, impaired loans, the unpaid contractual loan balances at March 31, 2018, and December 31, 2017; the outstanding loan balances recorded on the consolidated balance sheets at March 31, 2018, and December 31, 2017; any related allowance recorded for those loans as of March 31, 2018, and December 31, 2017; the average outstanding loan balances recorded on the consolidated balance sheets during the three-months ended March 31, 2018, and year ended December 31, 2017; and the interest income recognized on the impaired loans during the three-month period ended March 31, 2018, and year ended December 31, 2017, in thousands:

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year- to- Date Avg. Loan Balance		Year- to- Date Interest Income Recognized
March 31, 2018
Impaired loans with a related allowance:
Commercial	$	2,816	$	2,816	$	2,425	$	2,472	$	—
Commercial real estate	11,180		9,324		736		9,520		8
Total commercial and commercial real estate	13,996		12,140		3,161		11,992		8
Agricultural and agricultural real estate	1,536		1,536		787		1,537		—
Residential real estate	1,693		1,693		386		1,608		3
Consumer	2,859		2,859		1,137		3,069		9
Total impaired loans with a related allowance	$	20,084	$	18,228	$	5,471	$	18,206	$	20
Impaired loans without a related allowance:
Commercial	$	7,308	$	6,189	$	—	$	5,449	$	49
Commercial real estate	14,202		13,596		—		13,879		97
Total commercial and commercial real estate	21,510		19,785		—		19,328		146
Agricultural and agricultural real estate	17,388		15,360		—		12,954		1
Residential real estate	26,635		26,631		—		26,878		109
Consumer	3,757		3,568		—		3,912		22
Total impaired loans without a related allowance	$	69,290	$	65,344	$	—	$	63,072	$	278
Total impaired loans held to maturity:
Commercial	$	10,124	$	9,005	$	2,425	$	7,921	$	49
Commercial real estate	25,382		22,920		736		23,399		105
Total commercial and commercial real estate	35,506		31,925		3,161		31,320		154
Agricultural and agricultural real estate	18,924		16,896		787		14,491		1
Residential real estate	28,328		28,324		386		28,486		112
Consumer	6,616		6,427		1,137		6,981		31
Total impaired loans held to maturity	$	89,374	$	83,572	$	5,471	$	81,278	$	298

	Unpaid Contractual Balance		Loan Balance		Related Allowance Recorded		Year-to- Date Avg. Loan Balance		Year-to- Date Interest Income Recognized
December 31, 2017
Impaired loans with a related allowance:
Commercial	$	2,292	$	2,292	$	1,613	$	3,607	$	39
Commercial real estate	11,925		10,068		766		11,479		34
Total commercial and commercial real estate	14,217		12,360		2,379		15,086		73
Agricultural and agricultural real estate	1,539		1,539		546		3,437		—
Residential real estate	1,568		1,568		430		2,056		15
Consumer	2,634		2,634		1,400		2,370		41
Total impaired loans with a related allowance	$	19,958	$	18,101	$	4,755	$	22,949	$	129
Impaired loans without a related allowance:
Commercial	$	6,243	$	5,123	$	—	$	2,586	$	165
Commercial real estate	14,243		13,637		—		20,148		514
Total commercial and commercial real estate	20,486		18,760		—		22,734		679
Agricultural and agricultural real estate	13,793		11,765		—		9,654		—
Residential real estate	25,573		25,573		—		26,024		277
Consumer	4,269		4,269		—		3,884		73
Total impaired loans without a related allowance	$	64,121	$	60,367	$	—	$	62,296	$	1,029
Total impaired loans held to maturity:
Commercial	$	8,535	$	7,415	$	1,613	$	6,193	$	204
Commercial real estate	26,168		23,705		766		31,627		548
Total commercial and commercial real estate	34,703		31,120		2,379		37,820		752
Agricultural and agricultural real estate	15,332		13,304		546		13,091		—
Residential real estate	27,141		27,141		430		28,080		292
Consumer	6,903		6,903		1,400		6,254		114
Total impaired loans held to maturity	$	84,079	$	78,468	$	4,755	$	85,245	$	1,158

Changes in Accretable Yield on Acquired Loans

Changes in accretable yield on acquired loans with evidence of credit deterioration at the date of acquisition for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Three Months Ended March 31,
	2018			2017
Balance at beginning of period	$	57		$	182
Original yield premium, net, at date of acquisition	(56		)	—
Accretion	(199		)	(173		)
Reclassification from nonaccretable difference(1)	198			127
Balance at period end	$	—		$	136
(1) Represents increases in estimated cash flows expected to be received, primarily due to lower estimated credit losses.

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Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2018

Loans and Leases Receivable Disclosure [Abstract]

Changes in the Allowance for Loan and Leases Losses

Changes in the allowance for loan losses for the three-month periods ended March 31, 2018, and March 31, 2017, were as follows, in thousands:

	Commercial			Commercial Real Estate			Agricultural		Residential Real Estate			Consumer			Total
Balance at December 31, 2017	$	18,098		$	21,950		$	4,258	$	2,224		$	9,156		$	55,686
Charge-offs	(794		)	(125		)	—		(16		)	(1,289		)	(2,224		)
Recoveries	104			448			14		75			290			931
Provision	1,987			1,196			444		(142		)	778			4,263
Balance at March 31, 2018	$	19,395		$	23,469		$	4,716	$	2,141		$	8,935		$	58,656

	Commercial			Commercial Real Estate			Agricultural			Residential Real Estate			Consumer			Total
Balance at December 31, 2016	$	14,765		$	24,319		$	4,210		$	2,263		$	8,767		$	54,324
Charge-offs	(230		)	(608		)	(871		)	(265		)	(1,744		)	(3,718		)
Recoveries	234			212			1			2			303			752
Provision	1,411			(126		)	643			183			1,530			3,641
Balance at March 31, 2017	$	16,180		$	23,797		$	3,983		$	2,183		$	8,856		$	54,999

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Goodwill, Core Deposit Premium and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets

The gross carrying amount of these intangible assets and the associated accumulated amortization at March 31, 2018, and December 31, 2017, are presented in the table below, in thousands:

	March 31, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets:
Core deposit intangibles	$	69,731	$	28,939	$	40,792	$	62,008	$	27,086	$	34,922
Customer relationship intangibles	1,177		906		271		1,177		896		281
Mortgage servicing rights	42,249		19,084		23,165		42,139		18,891		23,248
Commercial servicing rights	6,740		4,434		2,306		6,719		4,110		2,609
Total	$	119,897	$	53,363	$	66,534	$	112,043	$	50,983	$	61,060

Schedule of Estimated Future Amortization Expense of Amortizable Intangible Assets

The following table shows the estimated future amortization expense for amortizable intangible assets, in thousands:

	Core Deposit Intangibles		Customer Relationship Intangibles		Mortgage Servicing Rights		Commercial Servicing Rights		Total
Nine months ending December 31, 2018	$	5,957	$	29	$	6,776	$	471	$	13,233
Year ending December 31,
2019	7,092		38		4,097		522		11,749
2020	6,220		37		3,512		411		10,180
2021	5,323		36		2,927		354		8,640
2022	4,175		34		2,341		290		6,840
2023	3,691		33		1,756		163		5,643
Thereafter	8,334		64		1,756		95		10,249
Total	$	40,792	$	271	$	23,165	$	2,306	$	66,534

Summary of Changes in Servicing Rights

The following table summarizes, in thousands, the changes in capitalized mortgage servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	23,248		$	32,088
Originations	1,162			2,132
Amortization	(1,245		)	(2,261		)
Balance at period end	$	23,165		$	31,959
Fair value of mortgage servicing rights	$	40,434		$	47,564
Mortgage servicing rights, net to servicing portfolio	0.66		%	0.74		%

The following table summarizes, in thousands, the changes in capitalized commercial servicing rights for the three months ended March 31, 2018, and March 31, 2017:

	2018			2017
Balance at January 1,	$	2,609		$	3,690
Originations	21			93
Amortization	(322		)	(306		)
Valuation allowance on commercial servicing rights	(2		)	5
Balance at period end	$	2,306		$	3,482
Fair value of commercial servicing rights	$	2,781		$	4,040
Commercial servicing rights, net to servicing portfolio	1.84		%	2.17		%

Schedule of Servicing Asset at Fair Value and Amortized Cost

The following table summarizes, in thousands, the book value, the fair value of each tranche of the commercial servicing rights and any recorded valuation allowance at each respective subsidiary at March 31, 2018, and December 31, 2017:

March 31, 2018	Book Value- Less than 20 Years		Fair Value- Less than 20 Years		Impairment- Less than 20 Years		Book Value- More than 20 Years		Fair Value- More than 20 Years		Impairment- More than 20 Years
Citywide Banks	$	6	$	10	$	—	$	33	$	36	$	—
Premier Valley Bank	72		104		—		286		272		14
Wisconsin Bank & Trust	368		534		—		1,554		1,825		—
Total	$	446	$	648	$	—	$	1,873	$	2,133	$	14
December 31, 2017
Citywide Banks	$	8	$	11	$	—	$	34	$	37	$	—
Premier Valley Bank	83		110		—		303		291		12
Wisconsin Bank & Trust	446		619		—		1,747		2,153		—
Total	$	537	$	740	$	—	$	2,084	$	2,481	$	12

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Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Balance Sheet Category and Fair Values of Derivative Instruments

The table below identifies the notional amount, fair value and balance sheet category of Heartland's fair value hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category
March 31, 2018
Fair value hedges	$	35,436	$	(105	)	Other liabilities
December 31, 2017
Fair value hedges	$	35,635	$	(999	)	Other liabilities

The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as cash flow hedges at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Receive Rate		Weighted Average Pay Rate		Maturity
March 31, 2018
Interest rate swap	$	25,000	$	239		Other assets	2.178	%	2.255	%	03/17/2021
Interest rate swap	20,000		(380		)	Other liabilities	1.704		3.355		01/07/2020
Interest rate swap	10,000		69			Other assets	2.286		1.674		03/26/2019
Interest rate swap	10,000		68			Other assets	2.178		1.658		03/18/2019
Interest rate swap	32,667		1,010			Other assets	4.240		3.674		05/10/2021
Interest rate swap	20,000		316			Other assets	2.125		2.390		06/15/2024
Interest rate swap	20,000		339			Other assets	2.006		2.352		03/01/2024
December 31, 2017
Interest rate swap	$	25,000	$	(106	)	Other liabilities	1.600	%	2.255	%	03/17/2021
Interest rate swap	20,000		(621		)	Other liabilities	1.350		3.355		01/07/2020
Interest rate swap	10,000		30			Other assets	1.329		1.674		03/26/2019
Interest rate swap	10,000		29			Other assets	1.600		1.658		03/18/2019
Interest rate swap	33,667		759			Other assets	3.932		3.674		05/10/2021
Interest rate swap(1)	20,000		(177		)	Other liabilities	1.588		2.390		06/15/2024
Interest rate swap(2)	20,000		(149		)	Other Liabilities	1.481		2.352		03/01/2024

The table below identifies the balance sheet category and fair values of Heartland's derivative instruments designated as loan swaps at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value			Balance Sheet Category	Weighted Average Receive Rate		Weighted Average Pay Rate
March 31, 2018
Customer interest rate swaps	$	162,882	$	3,763		Other assets	4.82	%	4.73	%
Customer interest rate swaps	162,882		(3,763		)	Other liabilities	4.73		4.82
December 31, 2017
Customer interest rate swaps	$	126,766	$	2,377		Other assets	4.70	%	4.03	%
Customer interest rate swaps	126,766		(2,377		)	Other liabilities	4.03		4.70

Gains (Losses) on Derivative Instruments

The table below identifies the gains and losses recognized on Heartland's fair value hedges for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Fair value hedges	$	894	Interest income
Three Months Ended March 31, 2017
Fair value hedges	$	194	Interest income

The table below identifies the gains and losses recognized on Heartland's derivative instruments designated as cash flow hedges for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Effective Portion						Ineffective Portion
	Recognized in OCI		Reclassified from AOCI into Income				Recognized in Income on Derivatives
	Amount of Gain (Loss)		Category	Amount of Gain (Loss)			Category	Amount of Gain (Loss)
Three Months Ended March 31, 2018
Interest rate swaps	$	1,896	Interest expense	$	(197	)	Other income	$	—
Three Months Ended March 31, 2017
Interest rate swaps	$	533	Interest expense	$	(397	)	Other income	$	—

Balance Sheet Category and Fair Values of Embedded Derivatives

The table below identifies the notional amount, fair value and balance sheet category of Heartland's embedded derivatives at March 31, 2018, and December 31, 2017, in thousands:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded derivatives	$	13,907	$	461	Other assets
December 31, 2017
Embedded derivatives	$	14,045	$	738	Other assets

The table below identifies the gains and losses recognized on Heartland's embedded derivatives for the three month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded derivatives	$	277	Other noninterest income
Three Months Ended March 31, 2017
Embedded derivatives	$	117	Other noninterest income

The following table identifies, in thousands, the notional amount, fair value, balance sheet category and income statement category for the change in fair value of the embedded conversion option as of March 31, 2018, and December 31, 2017:

	Notional Amount		Fair Value		Balance Sheet Category
March 31, 2018
Embedded conversion option	$	—	$	—	Other liabilities
December 31, 2017
Embedded conversion option	$	—	$	—	Other liabilities

The table below identifies the gains and losses recognized on Heartland's embedded conversion options for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Amount of Gain (Loss)		Income Statement Category
Three Months Ended March 31, 2018
Embedded conversion option	$	—	Other noninterest income
Three Months Ended March 31, 2017
Embedded conversion option	$	97	Other noninterest income

Schedule of Other Derivatives Not Designated as Hedging Instruments, Balance Sheet and Income Category

The table below identifies the balance sheet category and fair values of Heartland's other free standing derivative instruments not designated as hedging instruments at March 31, 2018, and December 31, 2017, in thousands:

	Balance Sheet Category	Notional Amount		Fair Value
March 31, 2018
Interest rate lock commitments (mortgage)	Other assets	$	65,591	$	1,959
Forward commitments	Other assets	55,118		283
Forward commitments	Other liabilities	91,625		(320		)
Undesignated interest rate swaps	Other liabilities	13,907		(461		)
December 31, 2017
Interest rate lock commitments (mortgage)	Other assets	$	53,588	$	1,738
Forward commitments	Other assets	37,286		80
Forward commitments	Other liabilities	118,632		(232		)
Undesignated interest rate swaps	Other liabilities	14,045		(738		)

The table below identifies the income statement category of the gains and losses recognized in income on Heartland's other free standing derivative instruments not designated as hedging instruments for the three-month periods ended March 31, 2018, and March 31, 2017, in thousands:

	Income Statement Category	Gain (Loss) Recognized
Three Months Ended March 31, 2018
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	17
Forward commitments	Net gains on sale of loans held for sale	115
Undesignated interest rate swaps	Other noninterest income	277
Three Months Ended March 31, 2017
Interest rate lock commitments (mortgage)	Net gains on sale of loans held for sale	$	1,062
Forward commitments	Net gains on sale of loans held for sale	(2,739		)
Undesignated interest rate swaps	Other noninterest income	117

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Fair Value (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The table below presents Heartland's assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2018, and December 31, 2017, in thousands, aggregated by the level in the fair value hierarchy within which those measurements fall:

	Total Fair Value		Level 1		Level 2		Level 3
March 31, 2018
Assets
Securities available for sale
U.S. government corporations and agencies	$	11,188	$	9,421	$	1,767	$	—
Mortgage and asset-backed securities	1,647,604		—		1,647,604		—
Obligations of states and political subdivisions	352,180		—		352,180		—
Corporate debt securities	—		—		—		—
Equity securities	16,693		—		16,693		—
Derivative financial instruments(1)	6,265		—		6,265		—
Interest rate lock commitments	1,959		—		—		1,959
Forward commitments	283		—		283		—
Total assets at fair value	$	2,036,172	$	9,421	$	2,024,792	$	1,959
Liabilities
Derivative financial instruments(2)	$	4,709	$	—	$	4,709	$	—
Forward commitments	320		—		320		—
Total liabilities at fair value	$	5,029	$	—	$	5,029	$	—
December 31, 2017
Assets
Securities available for sale
U.S. government corporations and agencies	$	5,328	$	3,484	$	1,844	$	—
Mortgage and asset-backed securities	1,753,736		—		1,753,736		—
Obligations of states and political subdivisions	441,015		—		441,015		—
Equity securities	16,674		—		16,674		—
Derivative financial instruments(1)	3,933		—		3,933		—
Interest rate lock commitments	1,738		—		—		1,738
Forward commitments	80		—		80		—
Total assets at fair value	$	2,222,504	$	3,484	$	2,217,282	$	1,738
Liabilities
Derivative financial instruments(2)	$	5,167	$	—	$	5,167	$	—
Forward commitments	232		—		232		—
Total liabilities at fair value	$	5,399	$	—	$	5,399	$	—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

Fair Value Measurements, Nonrecurring

The tables below present Heartland's assets that are measured at fair value on a nonrecurring basis, in thousands:

	Fair Value Measurements at March 31, 2018
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	2,923	$	—	$	—	$	2,923	$	—
Commercial real estate	8,316		—		—		8,316		—
Agricultural and agricultural real estate	8,041		—		—		8,041		—
Residential real estate	1,421		—		—		1,421		4
Consumer	1,721		—		—		1,721		—
Total collateral dependent impaired loans	$	22,422	$	—	$	—	$	22,422	$	4
Loans held for sale	$	24,376	$	—	$	24,376	$	—	$	288
Other real estate owned	$	11,801	$	—	$	—	$	11,801	$	16
Premises, furniture and equipment held for sale	$	1,477	$	—	$	—	$	1,477	$	(115	)
Commercial servicing rights	$	272	$	—	$	—	$	272	$	2

	Fair Value Measurements at December 31, 2017
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable  Inputs (Level 3)		Year-to- Date (Gains) Losses
Collateral dependent impaired loans:
Commercial	$	3,212	$	—	$	—		$	3,212	$	1,119
Commercial real estate	9,480		—		—			9,480		322
Agricultural and agricultural real estate	8,406		—		—			8,406		2,028
Residential real estate	1,137		—		—			1,137		—
Consumer	1,234		—		—			1,234		—
Total collateral dependent impaired loans	$	23,469	$	—	$	—	—	$	23,469	$	3,469
Loans held for sale	$	44,560	$	—	$	44,560		$	—	$	190
Other real estate owned	$	10,777	$	—	$	—		$	10,777	$	737
Premises, furniture and equipment held for sale	$	1,977	$	—	$	—		$	1,977	$	192
Commercial servicing rights	$	291	$	—	$	—		$	291	$	(21	)

Fair Value Inputs, Assets, Quantitative Information

The following tables present additional quantitative information about assets measured at fair value and for which Heartland has utilized Level 3 inputs to determine fair value, in thousands:

	Fair Value at 3/31/2018		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,959	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,477		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial servicing rights	272		Discounted cash flows	Third party valuation	(3)
Other real estate owned	11,801		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	2,923		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Commercial real estate	8,316		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Agricultural and agricultural real estate	8,041		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,421		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,721		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-14%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

	Fair Value at 12/31/2017		Valuation Technique	Unobservable Input	Range (Weighted Average)
Interest rate lock commitments	$	1,738	Discounted cash flows	Closing ratio	0-99% (89%)(1)
Premises, furniture and equipment held for sale	1,977		Modified appraised value	Third party appraisal	(2) 0-10%(4)
Commercial servicing rights	291		Discounted cash flows	Third party valuation	(3)
Other real estate owned	10,777		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%
Collateral dependent impaired loans:
Commercial	3,212		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-15%(4)
Commercial real estate	9,480		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Agricultural and agricultural real estate	8,406		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-10%(4)
Residential real estate	1,137		Modified appraised value	Third party appraisal	(2)
				Appraisal discount	0-12%(4)
Consumer	1,234		Modified appraised value	Third party valuation	(2)
				Valuation discount	0-12%(4)
(1) The significant unobservable input used in the fair value measurement is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close. The closing ratio calculation takes into consideration historical data and loan-level data.
(2) Third party appraisals are obtained and updated at least annually to establish the value of the underlying asset, but the disclosure of the unobservable inputs used by the appraisers would not be meaningful because the range will vary widely from appraisal to appraisal.
(3) The significant unobservable input used in the fair value measurement are the value indices, which are weighted-average spreads to LIBOR based on maturity groups.
(4) Discounts applied to the appraised values primarily include estimated sales costs, but also consider the age of the appraisal, changes in local market conditions and changes in the current condition of the collateral.

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The changes in fair value of the interest rate lock commitments, which are Level 3 financial instruments measured on a recurring basis, are summarized in the following table, in thousands:

	For the Three Months Ended March 31, 2018			For the Year Ended December 31, 2017
Balance at January 1,	$	1,738		$	2,790
Total gains (losses) included in earnings	17			(1,479		)
Issuances	492			1,875
Settlements	(288		)	(1,448		)
Balance at period end	$	1,959		$	1,738

Fair Value, by Balance Sheet Grouping

The following analysis, which is inherently limited in depicting fair value, also does not consider any value associated with either existing customer relationships or the ability of Heartland to create value through loan origination, deposit gathering or fee generating activities. Many of the estimates presented herein are based upon the use of highly subjective information and assumptions and, accordingly, the results may not be precise. Management believes that fair value estimates may not be comparable between financial institutions due to the wide range of permitted valuation techniques and numerous estimates which must be made. Furthermore, because the disclosed fair value amounts were estimated as of the balance sheet date, the amounts actually realized or paid upon maturity or settlement of the various financial instruments could be significantly different.

					Fair Value Measurements at March 31, 2018
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	266,346	$	266,346	$	266,346	$	—	$	—
Time deposits in other financial institutions	6,297		6,297		6,297		—		—
Securities:
Available for sale	2,027,665		2,027,665		9,421		2,018,244		—
Held to maturity	249,766		258,638		—		258,638		—
Other investments	22,982		22,982		—		22,982		—
Loans held for sale	24,376		24,376		—		24,376		—
Loans, net:
Commercial	1,786,838		1,766,760		—		1,763,837		2,923
Commercial real estate	3,298,798		3,280,785		—		3,272,469		8,316
Agricultural and agricultural real estate	514,471		508,582		—		500,541		8,041
Residential real estate	621,295		614,234		—		612,813		1,421
Consumer	465,957		464,793		—		463,072		1,721
Total Loans, net	6,687,359		6,635,154		—		6,612,732		22,422
Cash surrender value on life insurance	143,444		143,444		—		143,444		—
Derivative financial instruments(1)	6,265		6,265		—		6,265		—
Interest rate lock commitments	1,959		1,959		—		—		1,959
Forward commitments	283		283		—		283		—
Financial liabilities:
Deposits
Demand deposits	3,094,457		3,094,457		—		3,094,457		—
Savings deposits	4,536,106		4,536,106		—		4,536,106		—
Time deposits	910,977		910,977		—		910,977		—
Short term borrowings	131,240		131,240		—		131,240		—
Other borrowings	276,118		276,193		—		276,193		—
Derivative financial instruments(2)	4,709		4,709		—		4,709		—
Forward commitments	320		320		—		320		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

					Fair Value Measurements at December 31, 2017
	Carrying Amount		Estimated Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable  Inputs (Level 3)
Financial assets:
Cash and cash equivalents	$	196,003	$	196,003	$	196,003	$	—	$	—
Time deposits in other financial institutions	9,820		9,820		9,820		—		—
Securities:
Available for sale	2,216,753		2,216,753		3,484		2,213,269		—
Held to maturity	253,550		265,494		—		265,494		—
Other investments	22,563		22,563		—		22,563		—
Loans held for sale	44,560		44,560		—		44,560		—
Loans, net:
Commercial	1,628,043		1,617,956		—		1,614,744		3,212
Commercial real estate	3,140,427		3,132,542		—		3,123,062		9,480
Agricultural and agricultural real estate	508,075		508,987		—		500,581		8,406
Residential real estate	620,939		614,667		—		613,530		1,137
Consumer	438,294		440,820		—		439,586		1,234
Total Loans, net	6,335,778		6,314,972		—		6,291,503		23,469
Cash surrender value on life insurance	142,818		142,818		—		142,818		—
Derivative financial instruments(1)	3,933		3,933		—		3,933		—
Interest rate lock commitments	1,738		1,738		—		—		1,738
Forward commitments	80		80		—		80		—
Financial liabilities:
Deposits
Demand deposits	2,983,128		2,983,128		—		2,983,128		—
Savings deposits	4,240,328		4,240,328		—		4,240,328		—
Time deposits	923,453		923,453		—		923,453		—
Short term borrowings	324,691		324,691		—		324,691		—
Other borrowings	285,011		285,609		—		285,609		—
Derivative financial instruments(2)	5,167		5,167		—		5,167		—
Forward commitments	232		232		—		232		—
(1) Includes cash flow hedges, embedded derivatives and back-to-back loan swaps
(2) Includes cash flow hedges, fair value hedges, back-to-back loan swaps, embedded conversion options and free standing derivative instruments

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Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of noninterest income in-scope and out-of-scope of Topic 606

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2018, and 2017, in thousands:

	Three Months Ended March 31,
	2018			2017
In-scope of Topic 606
Service charges and fees
Service charges and fees on deposit accounts	$	2,618		$	2,160
Overdraft fees	2,208			2,193
Customer service fees	77			49
Credit card fee income	2,190			2,033
Debit card income	2,985			3,021
Other service charges	1			1
Total service charges and fees	10,079			9,457
Trust fees	4,680			3,631
Brokerage and insurance commissions	907			1,036
Total noninterest income in-scope of Topic 606	15,666			14,124
Out-of-scope of Topic 606
Loan servicing income	1,754			1,724
Securities gains, net	1,441			2,482
Unrealized loss on equity securities, net	(28		)	—
Net gains on sale of loans held for sale	4,051			6,147
Valuation adjustment on commercial servicing rights	(2		)	5
Income on bank owned life insurance	614			617
Other noninterest income	1,220			794
Total noninterest income out-of-scope of Topic 606	9,050			11,769
Total noninterest income	$	24,716		$	25,893

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Basis of Presentation (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments	2

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Basis of Presentation (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share
Net income	$ 23,268	$ 18,010
Preferred dividends	(13)	(19)
Interest expense on convertible preferred debt	0	5
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 23,255	$ 17,996
Weighted average common shares outstanding for basic earnings per share (in shares)	30,442	26,335
Assumed incremental common shares issued upon non-vested restricted stock units (in shares)	203	293
Weighted average common shares for diluted earnings per share (in shares)	30,645	26,628
Earnings per common share — basic (in dollars per share)	$ 0.76	$ 0.68
Earnings per common share — diluted (in dollars per share)	$ 0.76	$ 0.68
Number of antidilutive common stock equivalents excluded from diluted earnings per share computation (in shares)	0	0

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Basis of Presentation (Stock-Based Compensation) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit from equity based awards	$ 611,000	$ 888,000
Options granted (in shares)	0	0
Intrinsic value for the total of all options exercised	$ 231,000
Cash received from options exercised	$ 121,000	$ 102,000
Options vested during period (in shares)	0	0
2017 and 2018 RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, period before change in control	6 months
Prior to 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Typical options expiration period after date of grant	10 years
Time-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	3 years	3 years
Performance-Based RSUs | Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	1 year
Performance-Based RSUs | Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	3 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs	$ 1,900,000	$ 1,700,000
Share-based unrecognized compensation costs	6,100,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation costs	0	$ 0
Share-based unrecognized compensation costs	$ 0
Stock Options | Prior to 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	5 years
Stock Options | Period One | Prior to 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	3 years
Stock Options | Period Two | Prior to 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	4 years
Stock Options | Period Three | Prior to 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, award vesting periods	5 years
Long-Term Incentive Plan 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares for issuance under future awards (in shares)	459,893
Long-Term Incentive Plan 2012 | Time-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, granted (in shares)	52,153	55,665
Long-Term Incentive Plan 2012 | Performance-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting percentage after change in control	100.00%
Long-Term Incentive Plan 2012 | Performance-Based RSUs | 2017 and 2018 RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting percentage after change in control	100.00%
Share-based compensation, vesting period after change in control	24 months
Long-Term Incentive Plan 2012 | Performance-Based RSUs | Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, granted (in shares)	18,988	27,570
Long-Term Incentive Plan 2012 | Performance-Based RSUs | Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, granted (in shares)	16,108	9,032
Long-Term Incentive Plan 2012 | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments other than options, granted (in shares)	0	0

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Basis of Presentation (Summary of RSUs Outstanding) (Details) - RSUs - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Shares
Outstanding at beginning of period (in shares)	301,578	346,817
Granted (in shares)	87,249	92,267
Vested (in shares)	(107,553)	(103,897)
Forfeited (in shares)	(19,113)	(7,765)
Outstanding at end of period (in shares)	262,161	327,422
Weighted-Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 34.74	$ 27.61
Granted (in dollars per share)	55.25	47.50
Vested (in dollars per share)	30.79	24.74
Forfeited (in dollars per share)	43.62	31.03
Outstanding at end of period (in dollars per share)	$ 42.60	$ 34.04

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Basis of Presentation (Summary of Stock Options Outstanding) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Shares
Outstanding at beginning of period (in shares)	6,500	26,400
Granted (in shares)	0	0
Exercised (in shares)	(6,500)	(5,500)
Forfeited (in shares)	0	0
Outstanding at end of period (in shares)	0	20,900
Options exercisable at end of period (in shares)	0	20,900
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 18.60	$ 18.60
Granted (in dollars per share)	0.00	0.00
Exercised (in dollars per share)	18.60	18.60
Forfeited (in dollars per share)	0.00	0.00
Outstanding at end of period (in dollars per share)	0.00	18.60
Options exercisable at end of period (in dollars per share)	$ 0.00	$ 18.60

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Basis of Presentation (Effect of New Financial Accounting Standards) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unrealized net gain on equity securities	$ 0
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unrealized net gain on equity securities	280
Accumulated Other Comprehensive Income (Loss) | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unrealized net gain on equity securities		$ (280)
Accumulated Other Comprehensive Income (Loss) | ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment	(4,500)
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unrealized net gain on equity securities	280
Retained Earnings | ASU 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of unrealized net gain on equity securities		$ 280
Retained Earnings | ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment	$ 4,500

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Acquisitions (Details) $ in Thousands				3 Months Ended
	Feb. 23, 2018 USD ($) shares	Jul. 07, 2017 USD ($) building shares	Feb. 28, 2017 USD ($) building shares	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Assets						$ 10,055,863	$ 9,810,739
Held to maturity						6,746,015	6,391,464
Deposits						8,541,540	$ 8,146,909
Signature Bancshares, Inc.
Business Acquisition [Line Items]
Purchase price	$ 61,400
Purchase price in cash	$ 7,800
Purchase price paid by delivery of shares of common stock (in shares) | shares	1,000,843
Citywide Banks
Business Acquisition [Line Items]
Purchase price		$ 211,200
Purchase price in cash		$ 58,600
Purchase price paid by delivery of shares of common stock (in shares) | shares		3,216,161
Assets		$ 1,490,000
Held to maturity		985,400
Deposits		$ 1,210,000
Number of bank buildings sold (building) | building		1
Fair value of buildings sold		$ 1,400
Founders Bancorp
Business Acquisition [Line Items]
Purchase price			$ 31,000
Purchase price in cash			$ 8,400
Purchase price paid by delivery of shares of common stock (in shares) | shares			455,877
Assets			$ 213,900
Deposits			$ 181,500
Number of bank buildings sold (building) | building			1
Fair value of buildings sold					$ 576
Loans			$ 96,400
First Bank Lubbock Bancshares, Inc.
Business Acquisition [Line Items]
Assets						971,500
Held to maturity						704,900
Deposits						$ 869,300
Signature Bancshares, Inc.
Business Acquisition [Line Items]
Assets	$ 427,100
Held to maturity	324,500
Deposits	$ 357,300
Scenario, Forecast [Member] | First Bank Lubbock Bancshares, Inc.
Business Acquisition [Line Items]
Purchase price				$ 185,600

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Securities (Securities available for sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Equity Securities, FV-NI	$ 16,693
Marketable Securities, Amortized Cost Basis	2,080,514
Gross Unrealized Gains	5,103
Gross Unrealized Losses	(57,952)
Marketable Securities	2,027,665
Amortized Cost	2,080,514	$ 2,248,181
Gross Unrealized Gains		10,911
Gross Unrealized Losses		(42,339)
Securities available for sale	2,027,665	2,216,753
Total debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,063,821
Gross Unrealized Gains	5,103
Gross Unrealized Losses	(57,952)
Estimated Fair Value	2,010,972
Amortized Cost		2,231,885
Gross Unrealized Gains		10,533
Gross Unrealized Losses		(42,339)
Securities available for sale		2,200,079
U.S. government corporations and agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,254
Gross Unrealized Gains	3
Gross Unrealized Losses	(69)
Estimated Fair Value	11,188
Amortized Cost		5,358
Gross Unrealized Gains		8
Gross Unrealized Losses		(38)
Securities available for sale		5,328
Mortgage and asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,691,092
Gross Unrealized Gains	3,968
Gross Unrealized Losses	(47,456)
Estimated Fair Value	1,647,604
Amortized Cost		1,785,467
Gross Unrealized Gains		5,856
Gross Unrealized Losses		(37,587)
Securities available for sale		1,753,736
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	361,475
Gross Unrealized Gains	1,132
Gross Unrealized Losses	(10,427)
Estimated Fair Value	$ 352,180
Amortized Cost		441,060
Gross Unrealized Gains		4,669
Gross Unrealized Losses		(4,714)
Securities available for sale		441,015
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		16,296
Gross Unrealized Gains		378
Gross Unrealized Losses		0
Securities available for sale		$ 16,674

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Securities (Held to maturity securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 249,766	$ 253,550
Gross Unrealized Gains	9,699	12,460
Gross Unrealized Losses	(827)	(516)
Estimated Fair Value	258,638	265,494
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	249,766	253,550
Gross Unrealized Gains	9,699	12,460
Gross Unrealized Losses	(827)	(516)
Estimated Fair Value	$ 258,638	$ 265,494

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Securities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investment [Line Items]
Fair value of securities pledged	$ 594,300,000		$ 670,300,000
Gross realized gains on available-for-sale securities	0	$ 0
FHLB	$ 14,300,000		$ 14,000,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Investment [Line Items]
Percentage of mortgage and asset-backed securities issued by government-sponsored enterprises	77.00%

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Securities (Securities available for sale (debt maturities)) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized Cost
Due in 1 year or less	$ 5,397
Due in 1 to 5 years	56,369
Due in 5 to 10 years	116,517
Due after 10 years	194,446
Total debt securities	372,729
Mortgage and asset-backed securities	1,691,092
Equity securities	16,693
Amortized Cost	2,080,514	$ 2,248,181
Estimated Fair Value
Due in 1 year or less	5,392
Due in 1 to 5 years	56,209
Due in 5 to 10 years	112,484
Due after 10 years	189,283
Total debt securities	363,368
Mortgage and asset-backed securities	1,647,604
Equity securities	16,693
Estimated Fair Value	$ 2,027,665	$ 2,216,753

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Securities (Securities held to maturity (debt maturities)) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amortized Cost
Due in 1 year or less	$ 2,486
Due in 1 to 5 years	27,627
Due in 5 to 10 years	104,170
Due after 10 years	115,483
Amortized Cost	249,766	$ 253,550
Estimated Fair Value
Due in 1 year or less	2,523
Due in 1 to 5 years	28,231
Due in 5 to 10 years	106,538
Due after 10 years	121,346
Estimated Fair Value	$ 258,638	$ 265,494

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Securities (Gross realized gain (loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 392,246	$ 221,637
Gross security gains	3,013	3,830
Gross security losses	$ 1,572	$ 1,339

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Securities (Available for sale securities losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value
Less than 12 months	$ 1,111,078	$ 948,929
12 months or longer	511,246	559,158
Total	1,622,324	1,508,087
Unrealized Losses
Less than 12 months	(21,984)	(12,238)
12 months or longer	(35,968)	(30,101)
Total	(57,952)	(42,339)
Total debt securities
Fair Value
Less than 12 months	1,111,078	948,929
12 months or longer	511,246	559,158
Total	1,622,324	1,508,087
Unrealized Losses
Less than 12 months	(21,984)	(12,238)
12 months or longer	(35,968)	(30,101)
Total	(57,952)	(42,339)
U.S. government corporations and agencies
Fair Value
Less than 12 months	10,685	4,819
12 months or longer	0	0
Total	10,685	4,819
Unrealized Losses
Less than 12 months	(69)	(38)
12 months or longer	0	0
Total	(69)	(38)
Mortgage and asset-backed securities
Fair Value
Less than 12 months	923,293	851,070
12 months or longer	379,672	399,978
Total	1,302,965	1,251,048
Unrealized Losses
Less than 12 months	(18,459)	(11,533)
12 months or longer	(28,997)	(26,054)
Total	(47,456)	(37,587)
Obligations of states and political subdivisions
Fair Value
Less than 12 months	177,100	93,040
12 months or longer	131,574	159,180
Total	308,674	252,220
Unrealized Losses
Less than 12 months	(3,456)	(667)
12 months or longer	(6,971)	(4,047)
Total	$ (10,427)	$ (4,714)

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Securities (Held to maturity securities losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value
Less than 12 months	$ 30,496	$ 8,512
12 months or longer	7,907	8,989
Total	38,403	17,501
Unrealized Losses
Less than 12 months	(272)	(49)
12 months or longer	(555)	(467)
Total	(827)	(516)
Obligations of states and political subdivisions
Fair Value
Less than 12 months	30,496	8,512
12 months or longer	7,907	8,989
Total	38,403	17,501
Unrealized Losses
Less than 12 months	(272)	(49)
12 months or longer	(555)	(467)
Total	$ (827)	$ (516)

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Loans (Loans receivable) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Loans and Leases [Line Items]
Gross loans receivable held to maturity	$ 6,747,817	$ 6,393,226
Unearned discount	(1,620)	(556)
Deferred loan fees	(182)	(1,206)
Total net loans receivable held to maturity	6,746,015	6,391,464
Allowance for loan and lease losses	(58,656)	(55,686)
Loans receivable, net	6,687,359	6,335,778
Commercial
Loans and Leases [Line Items]
Gross loans receivable held to maturity	5,129,777	4,809,875
Commercial | Commercial
Loans and Leases [Line Items]
Gross loans receivable held to maturity	1,806,683	1,646,606
Commercial | Commercial real estate
Loans and Leases [Line Items]
Gross loans receivable held to maturity	3,323,094	3,163,269
Agricultural and agricultural real estate
Loans and Leases [Line Items]
Gross loans receivable held to maturity	518,386	511,588
Residential real estate
Loans and Leases [Line Items]
Gross loans receivable held to maturity	624,725	624,279
Consumer
Loans and Leases [Line Items]
Gross loans receivable held to maturity	$ 474,929	$ 447,484
Consumer | Loans and Finance Receivables | Citizens Finance Co
Loans and Leases [Line Items]
Concentration risk, percentage	15.00%

XML

Loans (Allowance for credit losses on financing receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	$ 5,471	$ 4,755
Ending Balance Under ASC 450-20	53,185	50,931
Total	58,656	55,686	$ 54,999	$ 54,324
Ending Balance Evaluated for Impairment Under ASC 310-10-35	83,572	78,468
Ending Balance Evaluated for Impairment Under ASC 450-20	6,664,245	6,314,758
Total	6,747,817	6,393,226
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,129,777	4,809,875
Commercial | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	2,425	1,613
Ending Balance Under ASC 450-20	16,970	16,485
Total	19,395	18,098	16,180	14,765
Ending Balance Evaluated for Impairment Under ASC 310-10-35	9,005	7,415
Ending Balance Evaluated for Impairment Under ASC 450-20	1,797,678	1,639,191
Total	1,806,683	1,646,606
Commercial | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	736	766
Ending Balance Under ASC 450-20	22,733	21,184
Total	23,469	21,950	23,797	24,319
Ending Balance Evaluated for Impairment Under ASC 310-10-35	22,920	23,705
Ending Balance Evaluated for Impairment Under ASC 450-20	3,300,174	3,139,564
Total	3,323,094	3,163,269
Agricultural and agricultural real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	787	546
Ending Balance Under ASC 450-20	3,929	3,712
Total	4,716	4,258	3,983	4,210
Ending Balance Evaluated for Impairment Under ASC 310-10-35	16,896	13,304
Ending Balance Evaluated for Impairment Under ASC 450-20	501,490	498,284
Total	518,386	511,588
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	386	430
Ending Balance Under ASC 450-20	1,755	1,794
Total	2,141	2,224	2,183	2,263
Ending Balance Evaluated for Impairment Under ASC 310-10-35	28,324	27,141
Ending Balance Evaluated for Impairment Under ASC 450-20	596,401	597,138
Total	624,725	624,279
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Ending Balance Under ASC 310-10-35	1,137	1,400
Ending Balance Under ASC 450-20	7,798	7,756
Total	8,935	9,156	$ 8,856	$ 8,767
Ending Balance Evaluated for Impairment Under ASC 310-10-35	6,427	6,903
Ending Balance Evaluated for Impairment Under ASC 450-20	468,502	440,581
Total	$ 474,929	$ 447,484

XML

Loans (Financing receivables, non accrual status) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Nonaccrual loans	$ 60,644	$ 58,272
Nonaccrual troubled debt restructured loans	4,162	4,309
Total nonaccrual loans	64,806	62,581
Accruing loans past due 90 days or more	22	830
Performing troubled debt restructured loans	$ 3,206	$ 6,617

XML

Loans (Troubled debt restructuring) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) loan	Mar. 31, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	5	3
Pre- Modification Recorded Investment	$ 877	$ 348
Post- Modification Recorded Investment	$ 752	$ 348
With Payment Defaults During the Following Periods
Number of Loans | loan	3	0
Recorded Investment	$ 519	$ 0
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
With Payment Defaults During the Following Periods
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0
Commercial | Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
With Payment Defaults During the Following Periods
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0
Commercial | Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
With Payment Defaults During the Following Periods
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0
Agricultural and agricultural real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
With Payment Defaults During the Following Periods
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	5	3
Pre- Modification Recorded Investment	$ 877	$ 348
Post- Modification Recorded Investment	$ 752	$ 348
With Payment Defaults During the Following Periods
Number of Loans | loan	3	0
Recorded Investment	$ 519	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Pre- Modification Recorded Investment	$ 0	$ 0
Post- Modification Recorded Investment	$ 0	$ 0
With Payment Defaults During the Following Periods
Number of Loans | loan	0	0
Recorded Investment	$ 0	$ 0

XML

Loans (Troubled debt) (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) loan
Financing Receivable, Recorded Investment [Line Items]
Principal deferment collected from government guarantees	$ 142
Capitalized interest and escrow	$ 17
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Number of loan relationships | loan	0

XML

Loans (Loans by credit quality indicator) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	$ 6,747,817	$ 6,393,226
Loans delinquent 30 to 89 days, percentage	0.21%	0.27%
Loans secured by residential real estate property in process of foreclosure	$ 2,800
Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	6,314,116	$ 6,009,382
Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	$ 433,701	$ 383,844
Percent of nonaccrual loans	15.00%	16.00%
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Percent of loans	55.00%	52.00%
Substandard
Financing Receivable, Recorded Investment [Line Items]
Percent of loans	45.00%	48.00%
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	$ 5,129,777	$ 4,809,875
Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	4,823,960	4,538,284
Commercial | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	305,817	271,591
Commercial | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	1,806,683	1,646,606
Commercial | Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	1,677,338	1,552,783
Commercial | Commercial | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	129,345	93,823
Commercial | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	3,323,094	3,163,269
Commercial | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	3,146,622	2,985,501
Commercial | Commercial real estate | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	176,472	177,768
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	518,386	511,588
Agricultural and agricultural real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	442,484	451,539
Agricultural and agricultural real estate | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	75,902	60,049
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	624,725	624,279
Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	585,886	586,623
Residential real estate | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	38,839	37,656
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	474,929	447,484
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	461,786	432,936
Consumer | Nonpass
Financing Receivable, Recorded Investment [Line Items]
Total gross loans receivable held to maturity	$ 13,143	$ 14,548

XML

Loans (Past due financing receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	$ 14,222	$ 18,137
Accruing Loans and Leases, Current	6,668,789	6,312,508
Nonaccrual	64,806	62,581
Total	6,747,817	6,393,226
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	9,965	13,375
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	4,235	3,932
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	22	830
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	5,932	8,700
Accruing Loans and Leases, Current	5,098,608	4,777,349
Nonaccrual	25,237	23,826
Total	5,129,777	4,809,875
Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	3,309	6,015
Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	2,623	2,585
Commercial | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	0	100
Commercial | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	4,789	1,605
Accruing Loans and Leases, Current	1,793,565	1,637,773
Nonaccrual	8,329	7,228
Total	1,806,683	1,646,606
Commercial | Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	2,906	1,246
Commercial | Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	1,883	259
Commercial | Commercial | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	0	100
Commercial | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	1,143	7,095
Accruing Loans and Leases, Current	3,305,043	3,139,576
Nonaccrual	16,908	16,598
Total	3,323,094	3,163,269
Commercial | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	403	4,769
Commercial | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	740	2,326
Commercial | Commercial real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	0	0
Agricultural and agricultural real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	1,238	738
Accruing Loans and Leases, Current	500,320	497,546
Nonaccrual	16,828	13,304
Total	518,386	511,588
Agricultural and agricultural real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	1,147	604
Agricultural and agricultural real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	69	134
Agricultural and agricultural real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	22	0
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	2,957	2,292
Accruing Loans and Leases, Current	602,927	601,120
Nonaccrual	18,841	20,867
Total	624,725	624,279
Residential real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	2,891	2,022
Residential real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	66	270
Residential real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	0	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	4,095	6,407
Accruing Loans and Leases, Current	466,934	436,493
Nonaccrual	3,900	4,584
Total	474,929	447,484
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	2,618	4,734
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	1,477	943
Consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing Loans and Leases, Past Due	$ 0	$ 730

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Loans (Impaired loans) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Unpaid Contractual Balance
Total impaired loans with a related allowance	$ 20,084	$ 19,958
Total impaired loans without a related allowance	69,290	64,121
Total impaired loans held to maturity	89,374	84,079
Loan Balance
Total impaired loans with a related allowance	18,228	18,101
Total impaired loans without a related allowance	65,344	60,367
Total impaired loans held to maturity	83,572	78,468
Related Allowance Recorded	5,471	4,755
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	18,206	22,949
Total impaired loans without a related allowance	63,072	62,296
Total impaired loans held to maturity	81,278	85,245
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	20	129
Total impaired loans without a related allowance	278	1,029
Total impaired loans held to maturity	298	1,158
Commercial
Unpaid Contractual Balance
Total impaired loans with a related allowance	13,996	14,217
Total impaired loans without a related allowance	21,510	20,486
Total impaired loans held to maturity	35,506	34,703
Loan Balance
Total impaired loans with a related allowance	12,140	12,360
Total impaired loans without a related allowance	19,785	18,760
Total impaired loans held to maturity	31,925	31,120
Related Allowance Recorded	3,161	2,379
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	11,992	15,086
Total impaired loans without a related allowance	19,328	22,734
Total impaired loans held to maturity	31,320	37,820
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	8	73
Total impaired loans without a related allowance	146	679
Total impaired loans held to maturity	154	752
Commercial | Commercial
Unpaid Contractual Balance
Total impaired loans with a related allowance	2,816	2,292
Total impaired loans without a related allowance	7,308	6,243
Total impaired loans held to maturity	10,124	8,535
Loan Balance
Total impaired loans with a related allowance	2,816	2,292
Total impaired loans without a related allowance	6,189	5,123
Total impaired loans held to maturity	9,005	7,415
Related Allowance Recorded	2,425	1,613
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	2,472	3,607
Total impaired loans without a related allowance	5,449	2,586
Total impaired loans held to maturity	7,921	6,193
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	0	39
Total impaired loans without a related allowance	49	165
Total impaired loans held to maturity	49	204
Commercial | Commercial real estate
Unpaid Contractual Balance
Total impaired loans with a related allowance	11,180	11,925
Total impaired loans without a related allowance	14,202	14,243
Total impaired loans held to maturity	25,382	26,168
Loan Balance
Total impaired loans with a related allowance	9,324	10,068
Total impaired loans without a related allowance	13,596	13,637
Total impaired loans held to maturity	22,920	23,705
Related Allowance Recorded	736	766
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	9,520	11,479
Total impaired loans without a related allowance	13,879	20,148
Total impaired loans held to maturity	23,399	31,627
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	8	34
Total impaired loans without a related allowance	97	514
Total impaired loans held to maturity	105	548
Agricultural and agricultural real estate
Unpaid Contractual Balance
Total impaired loans with a related allowance	1,536	1,539
Total impaired loans without a related allowance	17,388	13,793
Total impaired loans held to maturity	18,924	15,332
Loan Balance
Total impaired loans with a related allowance	1,536	1,539
Total impaired loans without a related allowance	15,360	11,765
Total impaired loans held to maturity	16,896	13,304
Related Allowance Recorded	787	546
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	1,537	3,437
Total impaired loans without a related allowance	12,954	9,654
Total impaired loans held to maturity	14,491	13,091
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	0	0
Total impaired loans without a related allowance	1	0
Total impaired loans held to maturity	1	0
Residential real estate
Unpaid Contractual Balance
Total impaired loans with a related allowance	1,693	1,568
Total impaired loans without a related allowance	26,635	25,573
Total impaired loans held to maturity	28,328	27,141
Loan Balance
Total impaired loans with a related allowance	1,693	1,568
Total impaired loans without a related allowance	26,631	25,573
Total impaired loans held to maturity	28,324	27,141
Related Allowance Recorded	386	430
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	1,608	2,056
Total impaired loans without a related allowance	26,878	26,024
Total impaired loans held to maturity	28,486	28,080
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	3	15
Total impaired loans without a related allowance	109	277
Total impaired loans held to maturity	112	292
Consumer
Unpaid Contractual Balance
Total impaired loans with a related allowance	2,859	2,634
Total impaired loans without a related allowance	3,757	4,269
Total impaired loans held to maturity	6,616	6,903
Loan Balance
Total impaired loans with a related allowance	2,859	2,634
Total impaired loans without a related allowance	3,568	4,269
Total impaired loans held to maturity	6,427	6,903
Related Allowance Recorded	1,137	1,400
Year- to- Date Avg. Loan Balance
Total impaired loans with a related allowance	3,069	2,370
Total impaired loans without a related allowance	3,912	3,884
Total impaired loans held to maturity	6,981	6,254
Year- to- Date Interest Income Recognized
Total impaired loans with a related allowance	9	41
Total impaired loans without a related allowance	22	73
Total impaired loans held to maturity	$ 31	$ 114

XML

Loans (Carrying amount of loans acquired) (Narrative) (Details) - USD ($) $ in Millions	Feb. 23, 2018	Jul. 07, 2017	Feb. 28, 2017
Signature Bancshares, Inc.
Business Acquisition [Line Items]
Loans held to maturity	$ 324.5
Estimated fair value of loans acquired	335.1
Citywide Banks
Business Acquisition [Line Items]
Loans held to maturity		$ 985.4
Estimated fair value of loans acquired		$ 1,000.0
Founders Bancorp
Business Acquisition [Line Items]
Loans held to maturity			$ 96.4
Estimated fair value of loans acquired			$ 98.9
Commercial | Signature Bancshares, Inc.
Business Acquisition [Line Items]
Loans held to maturity	$ 16.0

XML

Loans (Carrying amount of loans acquired) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	$ 1,606,305	$ 1,470,025
Commercial | Commercial
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	265,249	188,327
Commercial | Commercial real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	1,081,198	1,055,041
Agricultural and agricultural real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	26	1,242
Residential real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	181,219	174,123
Consumer
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	78,613	51,292
Impaired Purchased Loans
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	5,815	3,738
Impaired Purchased Loans | Commercial | Commercial
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	3,142	952
Impaired Purchased Loans | Commercial | Commercial real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	2,474	2,572
Impaired Purchased Loans | Agricultural and agricultural real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	0	0
Impaired Purchased Loans | Residential real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	199	214
Impaired Purchased Loans | Consumer
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	0	0
Non Impaired Purchased Loans
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	1,600,490	1,466,287
Non Impaired Purchased Loans | Commercial | Commercial
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	262,107	187,375
Non Impaired Purchased Loans | Commercial | Commercial real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	1,078,724	1,052,469
Non Impaired Purchased Loans | Agricultural and agricultural real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	26	1,242
Non Impaired Purchased Loans | Residential real estate
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	181,020	173,909
Non Impaired Purchased Loans | Consumer
Loans covered by loss share agreement (carrying amount) [Line Items]
Purchased loans	$ 78,613	$ 51,292

XML

Loans (Change in accretable yield on acquired loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 57	$ 182
Original yield premium, net, at date of acquisition	(56)	0
Accretion	(199)	(173)
Reclassification from nonaccretable difference	198	127
Balance at end of period	$ 0	$ 136

XML

Loans (Change in accretable yield on acquired loans) (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ 58,656,000		$ 55,686,000
Provision for loan losses	4,263,000	$ 3,641,000
2015, 2016 and 2017 Acquisitions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractually required payments of loans acquired	26,000,000
Estimated fair value of loans acquired	15,000,000
Allowance for loan and lease losses	0		$ 139,000
Provision for loan losses	0	$ 1,000
Non Impaired Purchased Loans | Two Thousand Fifteen Acquisitions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contractually required payments of loans acquired	2,990,000,000
Estimated fair value of loans acquired	$ 2,910,000,000

XML

Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 55,686	$ 54,324
Charge-offs	(2,224)	(3,718)
Recoveries	931	752
Provision	4,263	3,641
Ending Balance	58,656	54,999
Agricultural and agricultural real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	4,258	4,210
Charge-offs	0	(871)
Recoveries	14	1
Provision	444	643
Ending Balance	4,716	3,983
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	2,224	2,263
Charge-offs	(16)	(265)
Recoveries	75	2
Provision	(142)	183
Ending Balance	2,141	2,183
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	9,156	8,767
Charge-offs	(1,289)	(1,744)
Recoveries	290	303
Provision	778	1,530
Ending Balance	8,935	8,856
Commercial | Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	18,098	14,765
Charge-offs	(794)	(230)
Recoveries	104	234
Provision	1,987	1,411
Ending Balance	19,395	16,180
Commercial real estate | Commercial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	21,950	24,319
Charge-offs	(125)	(608)
Recoveries	448	212
Provision	1,196	(126)
Ending Balance	$ 23,469	$ 23,797

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Goodwill, Core Deposit Premium and Other Intangible Assets (Goodwill) (Narrative) (Details) - USD ($)		3 Months Ended
	Sep. 30, 2017	Mar. 31, 2018	Feb. 23, 2018	Dec. 31, 2017	Jul. 07, 2017	Feb. 28, 2017
Goodwill [Line Items]
Goodwill		$ 270,305,000		$ 236,615,000
Goodwill impairment	$ 0
Core Deposits
Goodwill [Line Items]
Intangibles, amortization period		10 years
Signature Bancshares, Inc.
Goodwill [Line Items]
Goodwill			$ 33,700,000
Signature Bancshares, Inc. | Core Deposits
Goodwill [Line Items]
Intangibles recognized			$ 7,700,000
Citywide Banks
Goodwill [Line Items]
Goodwill					$ 95,200,000
Citywide Banks | Core Deposits
Goodwill [Line Items]
Intangibles recognized					$ 16,000,000
Founders Bancorp
Goodwill [Line Items]
Goodwill						$ 13,800,000
Founders Bancorp | Core Deposits
Goodwill [Line Items]
Intangibles recognized						$ 2,500,000

XML

Goodwill, Core Deposit Premium and Other Intangible Assets (Carrying amount of intangible assets (incl accumulated amortization) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 119,897	$ 112,043
Accumulated Amortization	53,363	50,983
Net Carrying Amount	66,534	61,060
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	69,731	62,008
Accumulated Amortization	28,939	27,086
Net Carrying Amount	40,792	34,922
Customer relationship intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,177	1,177
Accumulated Amortization	906	896
Net Carrying Amount	271	281
Mortgage servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	42,249	42,139
Accumulated Amortization	19,084	18,891
Net Carrying Amount	23,165	23,248
Commercial servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,740	6,719
Accumulated Amortization	4,434	4,110
Net Carrying Amount	$ 2,306	$ 2,609

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Goodwill, Core Deposit Premium and Other Intangible Assets (Estimated future amortization expense for amortizable intangible assets) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Future amortization expense for amortizable intangible assets [Line Items]
Nine months ending December 31, 2018	$ 13,233
Year ending December 31,
2019	11,749
2020	10,180
2021	8,640
2022	6,840
2023	5,643
Thereafter	10,249
Total	66,534
Core deposit intangibles
Future amortization expense for amortizable intangible assets [Line Items]
Nine months ending December 31, 2018	5,957
Year ending December 31,
2019	7,092
2020	6,220
2021	5,323
2022	4,175
2023	3,691
Thereafter	8,334
Total	40,792
Customer relationship intangibles
Future amortization expense for amortizable intangible assets [Line Items]
Nine months ending December 31, 2018	29
Year ending December 31,
2019	38
2020	37
2021	36
2022	34
2023	33
Thereafter	64
Total	271
Mortgage servicing rights
Future amortization expense for amortizable intangible assets [Line Items]
Nine months ending December 31, 2018	6,776
Year ending December 31,
2019	4,097
2020	3,512
2021	2,927
2022	2,341
2023	1,756
Thereafter	1,756
Total	23,165
Commercial servicing rights
Future amortization expense for amortizable intangible assets [Line Items]
Nine months ending December 31, 2018	471
Year ending December 31,
2019	522
2020	411
2021	354
2022	290
2023	163
Thereafter	95
Total	$ 2,306

XML

Goodwill, Core Deposit Premium and Other Intangible Assets (Mortgage and commercial loans servicing) (Narrative) (Details) - USD ($)	3 Months Ended			12 Months Ended
	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017	Dec. 31, 2017
Valuation servicing rights in tranches [Line Items]
Mortgage loans serviced for others	$ 3,540,000,000			$ 3,560,000,000
Custodial escrow balances maintained	23,200,000			17,300,000
Total net loans receivable held to maturity		$ 773,900,000
Amount derecognized	6,900,000
Loans serviced	25,471,000			25,857,000
Mortgage Servicing Rights
Valuation servicing rights in tranches [Line Items]
Servicing asset at amortized value	$ 40,434,000		$ 47,564,000	$ 37,100,000
Prepayment rate (percent)	8.23%			9.73%
Discount rate (percent)	9.04%			9.06%
Fees collected for servicing of mortgage loans	$ 2,200,000		$ 3,200,000
Mortgage Servicing Rights | Minimum
Valuation servicing rights in tranches [Line Items]
Average cap rate (percent)	0.96%		0.91%
Mortgage Servicing Rights | Maximum
Valuation servicing rights in tranches [Line Items]
Average cap rate (percent)	1.25%		1.50%
Mortgage Servicing Rights 15-year Tranche
Valuation servicing rights in tranches [Line Items]
Servicing asset, agreement term	15 years
Mortgage Servicing Rights 30-year Tranche
Valuation servicing rights in tranches [Line Items]
Servicing asset, agreement term	30 years
Commercial Servicing Rights
Valuation servicing rights in tranches [Line Items]
Servicing asset at amortized value	$ 2,781,000		$ 4,040,000	$ 3,200,000
Loans serviced	$ 125,500,000			$ 139,900,000
Commercial Servicing Rights | Minimum
Valuation servicing rights in tranches [Line Items]
Prepayment rate (percent)	8.27%			7.27%
Discount rate (percent)	13.09%			13.04%
Average cap rate (percent)	3.10%		3.10%
Commercial Servicing Rights | Maximum
Valuation servicing rights in tranches [Line Items]
Prepayment rate (percent)	9.89%			8.88%
Discount rate (percent)	16.71%			15.49%
Average cap rate (percent)	4.45%		4.45%
Commercial Servicing Rights Less Than 20 Years
Valuation servicing rights in tranches [Line Items]
Servicing asset at amortized value	$ 648,000			$ 740,000
Servicing asset, agreement term	20 years
Fees collected for servicing of mortgage loans	$ 420,000		$ 415,000
Valuation allowance	0			0
Commercial Servicing Rights More Than 20 Years
Valuation servicing rights in tranches [Line Items]
Servicing asset at amortized value	$ 2,133,000			2,481,000
Servicing asset, agreement term	20 years
Valuation allowance	$ 14,000			$ 12,000

XML

Goodwill, Core Deposit Premium and Other Intangible Assets (Changes in capitalized mortgage and commercial servicing rights) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]
Valuation allowance on commercial servicing rights	$ (2)	$ 5
Mortgage Servicing Rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	23,248	32,088
Originations	1,162	2,132
Amortization	(1,245)	(2,261)
Balance at end of period	23,165	31,959
Fair value of mortgage servicing rights	$ 40,434	$ 47,564	$ 37,100
Mortgage servicing rights, net to servicing portfolio (percent)	0.66%	0.74%
Commercial servicing rights
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 2,609	$ 3,690
Originations	21	93
Amortization	(322)	(306)
Valuation allowance on commercial servicing rights	(2)	5
Balance at end of period	2,306	3,482
Fair value of mortgage servicing rights	$ 2,781	$ 4,040	$ 3,200
Mortgage servicing rights, net to servicing portfolio (percent)	1.84%	2.17%

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Goodwill, Core Deposit Premium and Other Intangible Assets (Book value, fair value of commercial serving rights and impairment) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Less than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	$ 446,000	$ 537,000
Fair Value	648,000	740,000
Impairment	0	0
More than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	1,873,000	2,084,000
Fair Value	2,133,000	2,481,000
Impairment	14,000	12,000
Citywide Banks | Less than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	6,000	8,000
Fair Value	10,000	11,000
Impairment	0	0
Citywide Banks | More than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	33,000	34,000
Fair Value	36,000	37,000
Impairment	0	0
Premier Valley Bank | Less than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	72,000	83,000
Fair Value	104,000	110,000
Impairment	0	0
Premier Valley Bank | More than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	286,000	303,000
Fair Value	272,000	291,000
Impairment	14,000	12,000
Wisconsin Bank & Trust | Less than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	368,000	446,000
Fair Value	534,000	619,000
Impairment	0	0
Wisconsin Bank & Trust | More than 20 Years
Finite-Lived Intangible Assets [Line Items]
Book Value	1,554,000	1,747,000
Fair Value	1,825,000	2,153,000
Impairment	$ 0	$ 0

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Derivative Financial Instruments (Cash collateral on derivative financial instruments) (Narrative) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 1,200,000
Counterparties
Derivative [Line Items]
Cash pledged as collateral	$ 860,000	$ 0

XML

Derivative Financial Instruments (Cash flow hedges) (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) transaction
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Change in net unrealized losses on cash flow hedges	$ 197
Estimated amount to be reclassified from accumulated other comprehensive income to interest expense within the next twelve months	$ 789
Interest Rate Swap | Cash Flow Hedges
Derivative [Line Items]
Number of swap transactions | transaction	5
Derivative, notional amount	$ 85,000
Interest Rate Swap | Cash Flow Hedges | Heartland Financial Statutory Trust IV, V and VII
Derivative [Line Items]
Derivative, notional amount	65,000
Interest Rate Swap | Cash Flow Hedges | Morrill Statutory Trust I and II
Derivative [Line Items]
Derivative, notional amount	$ 20,000

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Derivative Financial Instruments (Cash flow hedges) (Balance sheet category and fair values) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other assets | Interest Rate Swap due March 17, 2021
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 25,000
Fair Value, Other Assets	$ 239
Receive Rate	2.178%
Weighted Average Pay Rate	2.255%
Other assets | Interest Rate Swap due March 26, 2019
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 10,000	$ 10,000
Fair Value, Other Assets	$ 69	$ 30
Receive Rate	2.286%	1.329%
Weighted Average Pay Rate	1.674%	1.674%
Other assets | Interest Rate Swap due March 18, 2019
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 10,000	$ 10,000
Fair Value, Other Assets	$ 68	$ 29
Receive Rate	2.178%	1.60%
Weighted Average Pay Rate	1.658%	1.658%
Other assets | Interest Rate Swap due May 10, 2021
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 32,667	$ 33,667
Fair Value, Other Assets	$ 1,010	$ 759
Receive Rate	4.24%	3.932%
Weighted Average Pay Rate	3.674%	3.674%
Other assets | Interest Rate Swap due June 15, 2024
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 20,000
Fair Value, Other Assets	$ 316
Receive Rate	2.125%
Weighted Average Pay Rate	2.39%
Other assets | Interest Rate Swap due March 1, 2024
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 20,000
Fair Value, Other Assets	$ 339
Receive Rate	2.006%
Weighted Average Pay Rate	2.352%
Other liabilities | Interest Rate Swap due March 17, 2021
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities		$ 25,000
Fair Value, Other Liabilities		$ (106)
Receive Rate		1.60%
Weighted Average Pay Rate		2.255%
Other liabilities | Interest Rate Swap due January 7, 2020
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities	$ 20,000	$ 20,000
Fair Value, Other Liabilities	$ (380)	$ (621)
Receive Rate	1.704%	1.35%
Weighted Average Pay Rate	3.355%	3.355%
Other liabilities | Interest Rate Swap due June 15, 2024
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities		$ 20,000
Fair Value, Other Liabilities		$ (177)
Receive Rate		1.588%
Weighted Average Pay Rate		2.39%
Other liabilities | Interest Rate Swap due March 1, 2024
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities		$ 20,000
Fair Value, Other Liabilities		$ (149)
Receive Rate		1.481%
Weighted Average Pay Rate		2.352%

XML

Derivative Financial Instruments (Cash flow hedges) (Gains (losses) recognized) (Details) - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Trading Activity, Gains and Losses, Net [Line Items]
Effective Portion, Recognized in OCI, Amount of Gain (Loss)	$ 1,896	$ 533
Interest expense
Trading Activity, Gains and Losses, Net [Line Items]
Effective Portion, Reclassified from AOCI into Income, Amount of Gain (Loss)	(197)	(397)
Other income
Trading Activity, Gains and Losses, Net [Line Items]
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)	$ 0	$ 0

XML

Derivative Financial Instruments (Fair value hedges) (Narrative) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 1,200,000
Fair Value Hedging | Interest Rate Swap
Derivative [Line Items]
Cash pledged as collateral	$ 3,200,000	$ 3,900,000

XML

Derivative Financial Instruments (Fair value hedges) (Balance sheet category and fair values) (Details) - Other liabilities - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Feb. 05, 2016
Derivative [Line Items]
Notional Amount			$ 2,000,000
Fair value hedges
Derivative [Line Items]
Notional Amount	$ 35,436,000	$ 35,635,000
Fair Value	$ (105,000)	$ (999,000)

XML

Derivative Financial Instruments (Fair value hedges) (Gains (losses) recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair value hedges | Interest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss)	$ 894	$ 194

XML

Derivative Financial Instruments (Embedded derivatives) (Balance sheet category and fair values) (Details) - Embedded derivatives - Other assets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Notional Amount	$ 13,907	$ 14,045
Fair Value	$ 461	$ 738

XML

Derivative Financial Instruments (Embedded derivatives) (Gain (losses) recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other noninterest income | Embedded derivatives
Derivative [Line Items]
Amount of Gain (Loss)	$ 277	$ 117

XML

Derivative Financial Instruments (Embedded derivatives) (Narrative) (Details)		3 Months Ended	12 Months Ended
	Feb. 05, 2016 USD ($) shares	Mar. 31, 2018 shares	Dec. 31, 2017 shares
Derivative [Line Items]
Number of shares to be issued upon conversion (in shares)	73,394	0	0
Number of shares issued upon conversion (in shares)			20,481
Other liabilities
Derivative [Line Items]
Derivative, notional amount | $	$ 2,000,000

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Derivative Financial Instruments (Embedded derivatives) (Embedded conversion options) (Balance sheet category and fair values) (Details) - Other liabilities - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Feb. 05, 2016
Derivative [Line Items]
Notional Amount			$ 2,000,000
Embedded conversion option
Derivative [Line Items]
Notional Amount	$ 0	$ 0
Fair Value	$ 0	$ 0

XML

Derivative Financial Instruments (Embedded derivatives) (Embedded conversion options) (Gain (losses) recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other noninterest income | Embedded conversion option
Derivative [Line Items]
Amount of Gain (Loss)	$ 0	$ 97

XML

Derivative Financial Instruments (Back-to-back loan swaps) (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Cash pledged as collateral	$ 0		$ 1,200,000
Counterparties
Derivative [Line Items]
Cash pledged as collateral	860,000		0
Back-to-Back Loan Swaps | Interest Rate Swap
Derivative [Line Items]
Cash pledged as collateral	495,000		1,600,000
Back-to-Back Loan Swaps | Interest Rate Swap | Interest income
Derivative [Line Items]
Gain (loss) recognized	0	$ 0
Back-to-Back Loan Swaps | Interest Rate Swap | Counterparties
Derivative [Line Items]
Cash pledged as collateral	$ 1,600,000		$ 190,000

XML

Derivative Financial Instruments (Back-to-back loan swaps) (Balance sheet category and fair values) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Feb. 05, 2016
Other liabilities
Derivative [Line Items]
Notional Amount			$ 2,000,000
Back-to-Back Loan Swaps | Other assets
Derivative [Line Items]
Notional Amount	$ 162,882,000	$ 126,766,000
Fair Value, Receive fixed-pay floating interest rate swap	3,763,000	2,377,000
Back-to-Back Loan Swaps | Other liabilities
Derivative [Line Items]
Notional Amount	162,882,000	126,766,000
Fair Value, Pay fixed-receive floating interest rate swap	$ (3,763,000)	$ (2,377,000)
Long | Back-to-Back Loan Swaps | Other assets
Derivative [Line Items]
Derivative, Average Variable Interest Rate	4.82%	4.70%
Long | Back-to-Back Loan Swaps | Other liabilities
Derivative [Line Items]
Derivative, Average Variable Interest Rate	4.73%	4.03%
Short | Back-to-Back Loan Swaps | Other assets
Derivative [Line Items]
Derivative, Average Variable Interest Rate	4.73%	4.03%
Short | Back-to-Back Loan Swaps | Other liabilities
Derivative [Line Items]
Derivative, Average Variable Interest Rate	4.82%	4.70%

XML

Derivative Financial Instruments (Other free standing derivatives) (Narrative) (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 1,200,000
Counterparties
Derivative [Line Items]
Cash pledged as collateral	860,000	0
Not Designated as Hedging Instrument
Derivative [Line Items]
Cash pledged as collateral	203,000	20,000
Not Designated as Hedging Instrument | Counterparties
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 29,000

XML

Derivative Financial Instruments (Other free standing derivatives) (Balance sheet category and fair values) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other assets | Interest rate lock commitments (mortgage)
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	$ 65,591	$ 53,588
Fair Value, Other Assets	1,959	1,738
Other assets | Forward commitments
Derivatives, Fair Value [Line Items]
Notional Amount, Other Assets	55,118	37,286
Fair Value, Other Assets	283	80
Other liabilities | Forward commitments
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities	91,625	118,632
Fair Value, Other Liabilities	(320)	(232)
Other liabilities | Undesignated interest rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount, Other Liabilities	13,907	14,045
Fair Value, Other Liabilities	$ (461)	$ (738)

XML

Derivative Financial Instruments (Other free standing derivatives) (Gains (losses) recognized) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net gains on sale of loans held for sale | Interest rate lock commitments (mortgage)
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized	$ 17	$ 1,062
Net gains on sale of loans held for sale | Forward commitments
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized	115	(2,739)
Other noninterest income | Undesignated interest rate swaps
Trading Activity, Gains and Losses, Net [Line Items]
Gain (Loss) Recognized	$ 277	$ 117

XML

Fair Value (Fair value measurement recurring) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Securities available for sale	$ 2,027,665	$ 2,216,753
Level 1
Assets
Securities available for sale	9,421	3,484
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Level 2
Assets
Securities available for sale	2,018,244	2,213,269
Derivative assets	6,265	3,933
Liabilities
Derivative liabilities	4,709	5,167
Level 3
Assets
Securities available for sale	0	0
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Interest rate lock commitments | Level 1
Assets
Derivative assets	0	0
Interest rate lock commitments | Level 2
Assets
Derivative assets	0	0
Interest rate lock commitments | Level 3
Assets
Derivative assets	1,959	1,738
Forward commitments | Level 1
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Forward commitments | Level 2
Assets
Derivative assets	283	80
Liabilities
Derivative liabilities	320	232
Forward commitments | Level 3
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
U.S. government corporations and agencies
Assets
Securities available for sale		5,328
Mortgage and asset-backed securities
Assets
Securities available for sale		1,753,736
Obligations of states and political subdivisions
Assets
Securities available for sale		441,015
Equity securities
Assets
Securities available for sale		16,674
Recurring Basis
Assets
Total assets at fair value	2,036,172	2,222,504
Liabilities
Total liabilities at fair value	5,029	5,399
Recurring Basis | Level 1
Assets
Total assets at fair value	9,421	3,484
Liabilities
Total liabilities at fair value	0	0
Recurring Basis | Level 2
Assets
Total assets at fair value	2,024,792	2,217,282
Liabilities
Total liabilities at fair value	5,029	5,399
Recurring Basis | Level 3
Assets
Total assets at fair value	1,959	1,738
Liabilities
Total liabilities at fair value	0	0
Recurring Basis | Derivative Financial Instruments
Assets
Derivative assets	6,265	3,933
Liabilities
Derivative liabilities	4,709	5,167
Recurring Basis | Derivative Financial Instruments | Level 1
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Recurring Basis | Derivative Financial Instruments | Level 2
Assets
Derivative assets	6,265	3,933
Liabilities
Derivative liabilities	4,709	5,167
Recurring Basis | Derivative Financial Instruments | Level 3
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Recurring Basis | Interest rate lock commitments
Assets
Derivative assets	1,959	1,738
Recurring Basis | Interest rate lock commitments | Level 1
Assets
Derivative assets	0	0
Recurring Basis | Interest rate lock commitments | Level 2
Assets
Derivative assets	0	0
Recurring Basis | Interest rate lock commitments | Level 3
Assets
Derivative assets	1,959	1,738
Recurring Basis | Forward commitments
Assets
Derivative assets	283	80
Liabilities
Derivative liabilities	320	232
Recurring Basis | Forward commitments | Level 1
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Recurring Basis | Forward commitments | Level 2
Assets
Derivative assets	283	80
Liabilities
Derivative liabilities	320	232
Recurring Basis | Forward commitments | Level 3
Assets
Derivative assets	0	0
Liabilities
Derivative liabilities	0	0
Recurring Basis | U.S. government corporations and agencies
Assets
Securities available for sale	11,188	5,328
Recurring Basis | U.S. government corporations and agencies | Level 1
Assets
Securities available for sale	9,421	3,484
Recurring Basis | U.S. government corporations and agencies | Level 2
Assets
Securities available for sale	1,767	1,844
Recurring Basis | U.S. government corporations and agencies | Level 3
Assets
Securities available for sale	0	0
Recurring Basis | Mortgage and asset-backed securities
Assets
Securities available for sale	1,647,604	1,753,736
Recurring Basis | Mortgage and asset-backed securities | Level 1
Assets
Securities available for sale	0	0
Recurring Basis | Mortgage and asset-backed securities | Level 2
Assets
Securities available for sale	1,647,604	1,753,736
Recurring Basis | Mortgage and asset-backed securities | Level 3
Assets
Securities available for sale	0	0
Recurring Basis | Obligations of states and political subdivisions
Assets
Securities available for sale	352,180	441,015
Recurring Basis | Obligations of states and political subdivisions | Level 1
Assets
Securities available for sale	0	0
Recurring Basis | Obligations of states and political subdivisions | Level 2
Assets
Securities available for sale	352,180	441,015
Recurring Basis | Obligations of states and political subdivisions | Level 3
Assets
Securities available for sale	0	0
Recurring Basis | Corporate debt securities
Assets
Securities available for sale	0
Recurring Basis | Corporate debt securities | Level 1
Assets
Securities available for sale	0
Recurring Basis | Corporate debt securities | Level 2
Assets
Securities available for sale	0
Recurring Basis | Corporate debt securities | Level 3
Assets
Securities available for sale	0
Recurring Basis | Equity securities
Assets
Securities available for sale	16,693	16,674
Recurring Basis | Equity securities | Level 1
Assets
Securities available for sale	0	0
Recurring Basis | Equity securities | Level 2
Assets
Securities available for sale	16,693	16,674
Recurring Basis | Equity securities | Level 3
Assets
Securities available for sale	$ 0	$ 0

XML

Fair Value (Fair value measurement non-recurring) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 11,801	$ 10,777
Premises, furniture and equipment held for sale	1,477	1,977
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	24,376	44,560
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0	0
Other real estate owned	11,801	10,777
Commercial servicing rights | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	272	291
Premises, furniture and equipment held for sale | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	1,477	1,977
Commercial | Commercial | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	2,923	3,212
Commercial | Commercial real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,316	9,480
Agricultural and agricultural real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,041	8,406
Residential real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,421	1,137
Consumer | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,721	1,234
Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	22,422	23,469
Loans held for sale	24,376	44,560
Other real estate owned	11,801	10,777
Nonrecurring Basis | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	4	3,469
Loans held for sale	288	190
Other real estate owned	16	737
Nonrecurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Loans held for sale	0	0
Other real estate owned	0	0
Nonrecurring Basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Loans held for sale	24,376	44,560
Other real estate owned	0	0
Nonrecurring Basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	22,422	23,469
Loans held for sale	0	0
Other real estate owned	11,801	10,777
Nonrecurring Basis | Commercial servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	272	291
Nonrecurring Basis | Commercial servicing rights | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	2	(21)
Nonrecurring Basis | Commercial servicing rights | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	0	0
Nonrecurring Basis | Commercial servicing rights | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	0	0
Nonrecurring Basis | Commercial servicing rights | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Commercial servicing rights	272	291
Nonrecurring Basis | Premises, furniture and equipment held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	1,477	1,977
Nonrecurring Basis | Premises, furniture and equipment held for sale | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	(115)	192
Nonrecurring Basis | Premises, furniture and equipment held for sale | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	0	0
Nonrecurring Basis | Premises, furniture and equipment held for sale | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	0	0
Nonrecurring Basis | Premises, furniture and equipment held for sale | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises, furniture and equipment held for sale	1,477	1,977
Nonrecurring Basis | Commercial | Commercial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	2,923	3,212
Nonrecurring Basis | Commercial | Commercial | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	1,119
Nonrecurring Basis | Commercial | Commercial | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Commercial | Commercial | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Commercial | Commercial | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	2,923	3,212
Nonrecurring Basis | Commercial | Commercial real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,316	9,480
Nonrecurring Basis | Commercial | Commercial real estate | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	322
Nonrecurring Basis | Commercial | Commercial real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Commercial | Commercial real estate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Commercial | Commercial real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,316	9,480
Nonrecurring Basis | Agricultural and agricultural real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,041	8,406
Nonrecurring Basis | Agricultural and agricultural real estate | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	2,028
Nonrecurring Basis | Agricultural and agricultural real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Agricultural and agricultural real estate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Agricultural and agricultural real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	8,041	8,406
Nonrecurring Basis | Residential real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,421	1,137
Nonrecurring Basis | Residential real estate | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	4	0
Nonrecurring Basis | Residential real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Residential real estate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Residential real estate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,421	1,137
Nonrecurring Basis | Consumer
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	1,721	1,234
Nonrecurring Basis | Consumer | Year-to- Date (Gains) Losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Consumer | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Consumer | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	0	0
Nonrecurring Basis | Consumer | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	$ 1,721	$ 1,234

XML

Fair Value (Quantitative Information about Level 3 fair value measurements) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Securities available for sale	$ 2,027,665	$ 2,216,753
Premises, furniture and equipment held for sale	1,477	1,977
Other real estate owned	$ 11,801	$ 10,777
Commercial servicing rights | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	13.09%	13.04%
Commercial servicing rights | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	16.71%	15.49%
Level 3
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Securities available for sale	$ 0	$ 0
Derivative assets	0	0
Other real estate owned	$ 11,801	$ 10,777
Level 3 | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	10.00%	10.00%
Level 3 | Commercial | Commercial
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 2,923	$ 3,212
Level 3 | Commercial | Commercial | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Commercial | Commercial | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	10.00%	15.00%
Level 3 | Commercial | Commercial real estate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 8,316	$ 9,480
Level 3 | Commercial | Commercial real estate | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Commercial | Commercial real estate | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	10.00%	12.00%
Level 3 | Agricultural and agricultural real estate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 8,041	$ 8,406
Level 3 | Agricultural and agricultural real estate | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Agricultural and agricultural real estate | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	10.00%	10.00%
Level 3 | Residential real estate
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 1,421	$ 1,137
Level 3 | Residential real estate | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Residential real estate | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	12.00%	12.00%
Level 3 | Consumer
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral dependent impaired loans	$ 1,721	$ 1,234
Level 3 | Consumer | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Consumer | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	14.00%	12.00%
Level 3 | Commercial servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Commercial servicing rights	$ 272	$ 291
Level 3 | Premises, furniture and equipment held for sale
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Premises, furniture and equipment held for sale	$ 1,477	$ 1,977
Level 3 | Premises, furniture and equipment held for sale | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	0.00%	0.00%
Level 3 | Premises, furniture and equipment held for sale | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pretax discount rate (percent)	10.00%	10.00%
Level 3 | Interest rate lock commitments
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Derivative assets	$ 1,959	$ 1,738
Level 3 | Interest rate lock commitments | Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Closing ratio	0.00%	0.00%
Level 3 | Interest rate lock commitments | Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Closing ratio	99.00%	99.00%
Level 3 | Interest rate lock commitments | Weighted Average
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Closing ratio	89.00%	89.00%

XML

Fair Value (Changes Level 3 assets (fair value, recurring)) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Gains included in net gains on sale of loans held for sale	$ 2,889	$ 3,828
Interest rate lock commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	1,738	$ 2,790	$ 2,790
Total gains (losses) included in earnings	17		(1,479)
Issuances	492		1,875
Settlements	(288)		(1,448)
Balance at period end	1,959		1,738
Gains included in net gains on sale of loans held for sale	$ 2,000		$ 1,700

XML

Fair Value (Estimated fair value financial instruments (incl. carrying amounts)) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Securities:
Securities available for sale	$ 2,027,665	$ 2,216,753
Held to maturity	258,638	265,494
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	266,346	196,003
Securities:
Securities available for sale	9,421	3,484
Held to maturity	0	0
Other investments	0	0
Loans held for sale	0	0
Loans, net	0	0
Cash surrender value on life insurance	0	0
Derivative assets	0	0
Financial liabilities:
Short term borrowings	0	0
Other borrowings	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Cash and cash equivalents	0	0
Securities:
Securities available for sale	2,018,244	2,213,269
Held to maturity	258,638	265,494
Other investments	22,982	22,563
Loans held for sale	24,376	44,560
Loans, net	6,612,732	6,291,503
Cash surrender value on life insurance	143,444	142,818
Derivative assets	6,265	3,933
Financial liabilities:
Short term borrowings	131,240	324,691
Other borrowings	276,193	285,609
Derivative liabilities	4,709	5,167
Significant Unobservable Inputs (Level 3)
Financial assets:
Cash and cash equivalents	0	0
Securities:
Securities available for sale	0	0
Held to maturity	0	0
Other investments	0	0
Loans held for sale	0	0
Loans, net	22,422	23,469
Cash surrender value on life insurance	0	0
Derivative assets	0	0
Financial liabilities:
Short term borrowings	0	0
Other borrowings	0	0
Derivative liabilities	0	0
Carrying Amount
Financial assets:
Cash and cash equivalents	266,346	196,003
Securities:
Securities available for sale	2,027,665	2,216,753
Held to maturity	249,766	253,550
Other investments	22,982	22,563
Loans held for sale	24,376	44,560
Loans, net	6,687,359	6,335,778
Cash surrender value on life insurance	143,444	142,818
Derivative assets	6,265	3,933
Financial liabilities:
Short term borrowings	131,240	324,691
Other borrowings	276,118	285,011
Derivative liabilities	4,709	5,167
Estimated Fair Value
Financial assets:
Cash and cash equivalents	266,346	196,003
Securities:
Securities available for sale	2,027,665	2,216,753
Held to maturity	258,638	265,494
Other investments	22,982	22,563
Loans held for sale	24,376	44,560
Loans, net	6,635,154	6,314,972
Cash surrender value on life insurance	143,444	142,818
Derivative assets	6,265	3,933
Financial liabilities:
Short term borrowings	131,240	324,691
Other borrowings	276,193	285,609
Derivative liabilities	4,709	5,167
Interest rate lock commitments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Derivative assets	0	0
Interest rate lock commitments | Significant Other Observable Inputs (Level 2)
Securities:
Derivative assets	0	0
Interest rate lock commitments | Significant Unobservable Inputs (Level 3)
Securities:
Derivative assets	1,959	1,738
Interest rate lock commitments | Carrying Amount
Securities:
Derivative assets	1,959	1,738
Interest rate lock commitments | Estimated Fair Value
Securities:
Derivative assets	1,959	1,738
Forward commitments | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Forward commitments | Significant Other Observable Inputs (Level 2)
Securities:
Derivative assets	283	80
Financial liabilities:
Derivative liabilities	320	232
Forward commitments | Significant Unobservable Inputs (Level 3)
Securities:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Forward commitments | Carrying Amount
Securities:
Derivative assets	283	80
Financial liabilities:
Derivative liabilities	320	232
Forward commitments | Estimated Fair Value
Securities:
Derivative assets	283	80
Financial liabilities:
Derivative liabilities	320	232
Commercial | Commercial | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Loans, net	0	0
Commercial | Commercial | Significant Other Observable Inputs (Level 2)
Securities:
Loans, net	1,763,837	1,614,744
Commercial | Commercial | Significant Unobservable Inputs (Level 3)
Securities:
Loans, net	2,923	3,212
Commercial | Commercial | Carrying Amount
Securities:
Loans, net	1,786,838	1,628,043
Commercial | Commercial | Estimated Fair Value
Securities:
Loans, net	1,766,760	1,617,956
Commercial | Commercial real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Loans, net	0	0
Commercial | Commercial real estate | Significant Other Observable Inputs (Level 2)
Securities:
Loans, net	3,272,469	3,123,062
Commercial | Commercial real estate | Significant Unobservable Inputs (Level 3)
Securities:
Loans, net	8,316	9,480
Commercial | Commercial real estate | Carrying Amount
Securities:
Loans, net	3,298,798	3,140,427
Commercial | Commercial real estate | Estimated Fair Value
Securities:
Loans, net	3,280,785	3,132,542
Agricultural and agricultural real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Loans, net	0	0
Agricultural and agricultural real estate | Significant Other Observable Inputs (Level 2)
Securities:
Loans, net	500,541	500,581
Agricultural and agricultural real estate | Significant Unobservable Inputs (Level 3)
Securities:
Loans, net	8,041	8,406
Agricultural and agricultural real estate | Carrying Amount
Securities:
Loans, net	514,471	508,075
Agricultural and agricultural real estate | Estimated Fair Value
Securities:
Loans, net	508,582	508,987
Residential real estate | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Loans, net	0	0
Residential real estate | Significant Other Observable Inputs (Level 2)
Securities:
Loans, net	612,813	613,530
Residential real estate | Significant Unobservable Inputs (Level 3)
Securities:
Loans, net	1,421	1,137
Residential real estate | Carrying Amount
Securities:
Loans, net	621,295	620,939
Residential real estate | Estimated Fair Value
Securities:
Loans, net	614,234	614,667
Consumer | Quoted Prices in Active Markets for Identical Assets (Level 1)
Securities:
Loans, net	0	0
Consumer | Significant Other Observable Inputs (Level 2)
Securities:
Loans, net	463,072	439,586
Consumer | Significant Unobservable Inputs (Level 3)
Securities:
Loans, net	1,721	1,234
Consumer | Carrying Amount
Securities:
Loans, net	465,957	438,294
Consumer | Estimated Fair Value
Securities:
Loans, net	464,793	440,820
Time deposits in other financial institutions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets:
Time deposits in other financial institutions	6,297	9,820
Time deposits in other financial institutions | Significant Other Observable Inputs (Level 2)
Financial assets:
Time deposits in other financial institutions	0	0
Time deposits in other financial institutions | Significant Unobservable Inputs (Level 3)
Financial assets:
Time deposits in other financial institutions	0	0
Time deposits in other financial institutions | Carrying Amount
Financial assets:
Time deposits in other financial institutions	6,297	9,820
Time deposits in other financial institutions | Estimated Fair Value
Financial assets:
Time deposits in other financial institutions	6,297	9,820
Demand deposits | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities:
Deposits	0	0
Demand deposits | Significant Other Observable Inputs (Level 2)
Financial liabilities:
Deposits	3,094,457	2,983,128
Demand deposits | Significant Unobservable Inputs (Level 3)
Financial liabilities:
Deposits	0	0
Demand deposits | Carrying Amount
Financial liabilities:
Deposits	3,094,457	2,983,128
Demand deposits | Estimated Fair Value
Financial liabilities:
Deposits	3,094,457	2,983,128
Savings deposits | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities:
Deposits	0	0
Savings deposits | Significant Other Observable Inputs (Level 2)
Financial liabilities:
Deposits	4,536,106	4,240,328
Savings deposits | Significant Unobservable Inputs (Level 3)
Financial liabilities:
Deposits	0	0
Savings deposits | Carrying Amount
Financial liabilities:
Deposits	4,536,106	4,240,328
Savings deposits | Estimated Fair Value
Financial liabilities:
Deposits	4,536,106	4,240,328
Time deposits | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities:
Deposits	0	0
Time deposits | Significant Other Observable Inputs (Level 2)
Financial liabilities:
Deposits	910,977	923,453
Time deposits | Significant Unobservable Inputs (Level 3)
Financial liabilities:
Deposits	0	0
Time deposits | Carrying Amount
Financial liabilities:
Deposits	910,977	923,453
Time deposits | Estimated Fair Value
Financial liabilities:
Deposits	$ 910,977	$ 923,453

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Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Trust fees	$ 4,680	$ 3,631
Brokerage and insurance commissions	907	1,036
Total noninterest income	15,666	14,124
Loan servicing income	1,754	1,724
Securities gains, net	1,441	2,482
Unrealized loss on equity securities, net	(28)	0
Net gains on sale of loans held for sale	4,051	6,147
Valuation adjustment on commercial servicing rights	(2)	5
Income on bank owned life insurance	614	617
Other noninterest income	1,220	794
Total noninterest income out-of-scope of Topic 606	9,050	11,769
TOTAL NONINTEREST INCOME	24,716	25,893
Service charges and fees on deposit accounts
Disaggregation of Revenue [Line Items]
Total noninterest income	2,618	2,160
Overdraft fees
Disaggregation of Revenue [Line Items]
Total noninterest income	2,208	2,193
Customer service fees
Disaggregation of Revenue [Line Items]
Total noninterest income	77	49
Credit card fee income
Disaggregation of Revenue [Line Items]
Total noninterest income	2,190	2,033
Debit card income
Disaggregation of Revenue [Line Items]
Total noninterest income	2,985	3,021
Other service charges
Disaggregation of Revenue [Line Items]
Total noninterest income	1	1
Total service charges and fees
Disaggregation of Revenue [Line Items]
Total noninterest income	$ 10,079	$ 9,457