MidWestOne Financial (MOFG) 10-Q 6 May 21 2021 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2021	May 04, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-35968
Entity Registrant Name	MIDWESTONE FINANCIAL GROUP, INC.
Entity Incorporation, State or Country Code	IA
Entity Tax Identification Number	42-1206172
Entity Address, Address Line One	102 South Clinton Street
Entity Address, City or Town	Iowa City
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52240
City Area Code	319
Local Phone Number	356-5800
Title of 12(b) Security	Common stock, $1.00 par value
Trading Symbol	MOFG
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,979,198
Entity Central Index Key	0001412665
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 57,154	$ 65,078
Interest earning deposits in banks	80,924	17,409
Federal funds sold	7,691	172
Total cash and cash equivalents	145,769	82,659
Debt securities available for sale at fair value	1,896,894	1,657,381
Loans held for sale	58,333	59,956
Gross loans held for investment	3,374,076	3,496,790
Unearned income, net	(15,915)	(14,567)
Loans held for investment, net of unearned income	3,358,161	3,482,223
Allowance for credit losses	(50,650)	(55,500)
Total loans held for investment, net	3,307,511	3,426,723
Premises and equipment, net	85,581	86,401
Goodwill	62,477	62,477
Other intangible assets, net	23,735	25,242
Foreclosed assets, net	1,487	2,316
Other assets	155,525	153,493
Total assets	5,737,312	5,556,648
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest bearing deposits	958,526	910,655
Interest bearing deposits	3,836,037	3,636,394
Total deposits	4,794,563	4,547,049
Short-term borrowings	175,785	230,789
Long-term debt	201,696	208,691
Other liabilities	53,948	54,869
Total liabilities	5,225,992	5,041,398
Shareholders' equity
Preferred stock, no par value; authorized 500,000 shares; no shares issued and outstanding	0	0
Common stock, $1.00 par value; authorized 30,000,000 shares; issued shares of 16,581,017 and 16,581,017; outstanding shares of 15,981,088 and 16,016,780	16,581	16,581
Additional paid-in capital	299,747	300,137
Retained earnings	206,230	188,191
Treasury stock at cost, 599,929 and 564,237 shares	(15,278)	(14,251)
Accumulated other comprehensive income	4,040	24,592
Total shareholders' equity	511,320	515,250
Total liabilities and shareholders' equity	$ 5,737,312	$ 5,556,648

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	16,581,017	16,581,017
Common stock, shares outstanding (in shares)	15,981,088	16,016,780
Treasury stock (in shares)	599,929	564,237

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income
Loans, including fees	$ 36,542	$ 42,012
Taxable investment securities	5,093	3,717
Tax-exempt investment securities	2,555	1,512
Other	14	164
Total interest income	44,204	47,405
Interest expense
Deposits	3,608	7,949
Short-term borrowings	128	334
Long-term debt	1,851	1,716
Total interest expense	5,587	9,999
Net interest income	38,617	37,406
Credit loss (benefit) expense	(4,734)	21,733
Net interest income after credit loss (benefit) expense	43,351	15,673
Noninterest income
Investment services and trust activities	2,836	2,536
Service charges and fees	1,487	1,826
Card revenue	1,536	1,365
Loan revenue	4,730	1,123
Bank-owned life insurance	542	520
Investment securities gains, net	27	42
Other	666	2,743
Total noninterest income	11,824	10,155
Noninterest expense
Compensation and employee benefits	16,917	16,617
Occupancy expense of premises, net	2,318	2,341
Equipment	1,793	1,880
Legal and professional	783	1,535
Data processing	1,252	1,354
Marketing	1,006	1,062
Amortization of intangibles	1,507	2,028
FDIC insurance	512	448
Communications	409	457
Foreclosed assets, net	47	138
Other	1,156	2,141
Total noninterest expense	27,700	30,001
Income (loss) before income tax expense	27,475	(4,173)
Income tax expense (benefit)	5,827	(2,198)
Net income (loss)	$ 21,648	$ (1,975)
Per common share information
Earnings (loss) - basic (in dollars per share)	$ 1.35	$ (0.12)
Earnings (loss) - diluted (in dollars per share)	1.35	(0.12)
Dividends paid (in dollars per share)	$ 0.2250	$ 0.2200

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 21,648	$ (1,975)
Unrealized (loss) gain from debt securities available for sale:
Unrealized net holding (loss) gain on debt securities available for sale arising during the period	(27,784)	4,325
Reclassification adjustment for gains included in net income	(27)	(42)
Income tax benefit (expense)	7,259	(1,118)
Unrealized net (loss) gain on debt securities available for sale, net of reclassification adjustment	(20,552)	3,165
Unrealized loss from cash flow hedging instruments:
Unrealized net holding loss in cash flow hedging instruments arising during the period	0	(888)
Reclassification adjustment for net gain in cash flow hedging instruments included in income	0	(5)
Income tax benefit	0	233
Unrealized net losses on cash flow hedge instruments, net of reclassification adjustment	0	(660)
Other comprehensive (loss) income, net of tax	(20,552)	2,505
Comprehensive income	$ 1,096	$ 530

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative effect adjustment	[1]	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained EarningsCumulative effect adjustment	[1]	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2019		$ 508,982	$ (5,362)		$ 16,581	$ 297,390	$ 201,105	$ (5,362)		$ (10,466)	$ 4,372
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(1,975)					(1,975)
Other comprehensive (loss)		2,505									2,505
Acquisition fair value finalization	[2]	2,355				2,355
Release/lapse of restriction on RSUs		(127)				(679)				552
Repurchase of common stock		(2,604)								(2,604)
Share-based compensation		346				346
Dividends paid on common stock		(3,556)					(3,556)
Ending balance at Mar. 31, 2020		$ 500,564			16,581	299,412	190,212			(12,518)	6,877
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting standards update		us-gaap:AccountingStandardsUpdate201613Member
Beginning balance at Dec. 31, 2020		$ 515,250			16,581	300,137	188,191			(14,251)	24,592
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		21,648					21,648
Other comprehensive (loss)		(20,552)									(20,552)
Release/lapse of restriction on RSUs		(113)				(774)	(11)			672
Repurchase of common stock		(1,699)								(1,699)
Share-based compensation		384				384
Dividends paid on common stock		(3,598)					(3,598)
Ending balance at Mar. 31, 2021		$ 511,320			$ 16,581	$ 299,747	$ 206,230			$ (15,278)	$ 4,040
[1]	Reclassification pursuant to adoption of ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.
[2]	Relates to the finalization of the purchase accounting adjustments for the ATBancorp acquisition. This purchase accounting adjustment had a $2.06 million impact on goodwill, $296 thousand impact on deferred income taxes, with the offsetting impact being to additional paid-in capital.

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Release/lapse of restriction on RSUs (in shares)	26,896	22,946
Repurchase of common stock (in shares)	62,588	95,340
Dividends paid on common stock (in dollars per share)	$ 0.2250	$ 0.2200
ATBancorp
Goodwill adjustments		$ 2,060
Deferred income taxes		$ 296

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 21,648	$ (1,975)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Credit loss (benefit) expense	(4,734)	21,733
Depreciation, amortization, and accretion	(342)	1,456
Net loss on sale of premises and equipment	0	5
Share-based compensation	384	346
Net gain on sale or call of debt securities available for sale	0	(42)
Net gain on sale of foreclosed assets, net	(146)	(37)
Writedown of foreclosed assets	145	131
Net gain on sale of loans held for sale	(3,089)	(810)
Origination of loans held for sale	(82,898)	(50,305)
Proceeds from sales of loans held for sale	87,610	47,032
Increase in cash surrender value of bank-owned life insurance	(541)	(521)
Decrease (increase) in deferred income taxes, net	810	(3,655)
Change in:
Other assets	4,871	(5,316)
Other liabilities	(8,666)	13,367
Net cash provided by operating activities	15,052	21,409
Cash flows from investing activities:
Proceeds from sales of debt securities available for sale	0	22,140
Proceeds from maturities and calls of debt securities available for sale	108,976	28,426
Purchases of debt securities available for sale	(369,754)	(142,632)
Net decrease in loans held for investment	128,164	27,819
Purchases of premises and equipment	(349)	(403)
Proceeds from sale of foreclosed assets	1,010	2,151
Proceeds from sale of premises and equipment	0	2
Net cash (used in) investing activities	(131,953)	(62,497)
Cash flows from financing activities:
Deposits	247,469	131,094
Short-term borrowings	(55,004)	(9,860)
Payments of subordinated debt issuance costs	(9)	0
Payments on finance lease liability	(35)	(31)
Payments of Federal Home Loan Bank borrowings	(7,000)	(20,000)
Payments of other long-term debt	0	(1,767)
Taxes paid relating to the release/lapse of restriction on RSUs	(113)	(127)
Dividends paid	(3,598)	(3,556)
Repurchase of common stock	(1,699)	(2,604)
Net cash provided by financing activities	180,011	93,149
Net increase in cash and cash equivalents	63,110	52,061
Cash and cash equivalents:
Beginning of Period	82,659	73,484
Ending balance	145,769	125,545
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	6,835	9,993
Cash paid during the period for income taxes	0	0
Supplemental schedule of non-cash investing and financing activities:
Transfer of loans to foreclosed assets, net	180	493
Investment securities purchased but not settled	$ 7,945	$ 7,267

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Business MidWest One Financial Group, Inc., an Iowa corporation formed in 1983, is a bank holding company under the BHCA and a financial holding company under the GLBA. Our principal executive offices are located at 102 South Clinton Street, Iowa City, Iowa 52240. The Company owns all of the outstanding common stock of MidWest One Bank, an Iowa state non-member bank chartered in 1934 with its main office in Iowa City, Iowa. We operate primarily through MidWest One Bank, our bank subsidiary. Basis of Presentation The accompanying interim condensed consolidated financial statements are prepared in accordance with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all significant intercompany accounts and transactions have been eliminated and adjustments, consisting solely of normal recurring accruals and considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K for the year ended December 31, 2020, filed with the SEC on March 11, 2021. Risks and Uncertainties The outbreak of COVID-19 has adversely impacted a broad range of industries in which the Company’s customers operate and could impair their ability to fulfill their financial obligations to the Company. The World Health Organization declared COVID-19 to be a global pandemic, indicating that almost all public commerce and related business activities must be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The spread of the outbreak has caused significant disruptions in the U.S. economy and has disrupted banking and other financial activity in the areas in which the Company operates. While there has been no material impact to the Company’s employees to date, COVID-19 could also potentially create widespread business continuity issues for the Company. Congress, the President, and the FRB have taken several actions designed to mitigate the economic impact of the pandemic. The CARES Act was signed into law in March 2020 as a $2 trillion legislative package. In addition to the general impact of COVID-19, certain provisions of the CARES Act as well as other recent legislative and regulatory relief efforts are expected to have a material impact on the Company’s operations. On December 27, 2020, a new COVID-19 relief bill was signed into law by President Trump, which includes as part of the bill up to $284.5 billion of a second wave of PPP funding. The American Rescue Plan Act of 2021 was signed into law on March 11, 2021 by President Biden as a $1.9 trillion legislative package, which includes as part of the bill a variety of economic assistance programs for Americans. In addition, on March 30, 2021, President Biden signed into law the PPP Extension Act of 2021, which provided an extension to May 31, 2021 for qualifying businesses to apply for a PPP loan and provided an additional 30 days for the SBA to process pending PPP loan applications. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. If the global response to contain COVID-19 escalates further or is unsuccessful, the Company could experience a material adverse effect on its business, financial condition, results of operations and cash flows. While it is not possible to know the full universe or extent that the impact of COVID-19, and related measures to curtail its spread or to provide economic assistance to entities and individuals or otherwise stimulate the economy, will have on the Company’s operations, the Company discloses in this report potentially material items of which it is aware at the time this report is filed with the SEC. Financial position and results of operations The Company’s interest income could be reduced due to COVID-19. In accordance with CARES Act provisions and regulatory guidance, the Company is actively working with COVID-19 affected borrowers to defer their payments, interest, and fees. While interest and fees will still accrue to income, through normal GAAP accounting, should eventual credit losses on these deferred payments emerge, interest income and fees accrued would need to be reversed. In such a scenario, interest income in future periods could be negatively impacted. At this time, the Company is unable to project the materiality of such an impact, but recognizes that the breadth of the economic impact of COVID-19 may affect its borrowers’ ability to repay in future periods. Capital and liquidity While the Company believes that it has sufficient capital to withstand an extended economic recession brought about by COVID-19, its reported and regulatory capital ratios could be adversely impacted by further credit losses. The Company relies on cash on hand as well as dividends from its subsidiary bank to service its debt. If the Company’s capital deteriorates such that its subsidiary bank is unable to pay dividends to it for an extended period of time, the Company may not be able to service its debt. If an extended recession causes large numbers of the Company’s deposit customers to withdraw their funds, the Company might become more reliant on volatile or more expensive sources of funding. Asset valuation Currently, the Company does not expect COVID-19 to affect its ability to account timely for the assets on its balance sheet; however, this could change in future periods. While certain valuation assumptions and judgments will change to account for pandemic-related circumstances such as widening credit spreads, the Company does not anticipate significant changes in methodology used to determine the fair value of assets measured in accordance with GAAP. It is possible that the lingering effects of COVID-19 could cause the occurrence of what management would deem to be subsequent triggering events that could, under certain circumstances, cause us to perform a goodwill or intangible asset impairment test and result in an impairment charge being recorded for that period. In the event that the Company concludes that all or a portion of its goodwill or intangible assets is impaired, a non-cash charge for the amount of such impairment would be recorded to earnings. Such a charge would have no impact on tangible capital or regulatory capital, cash flows or liquidity position. Credit The Company is working with customers directly affected by COVID-19. The Company has offered and continues to offer short-term assistance in accordance with regulatory guidelines. As a result of the current economic environment caused by the COVID-19 pandemic, the Company is engaging in more frequent communication with borrowers to better understand their situations and the challenges faced, allowing it to respond proactively as needs and issues arise. Should economic conditions worsen, the Company could experience further increases in its required ACL and record additional credit loss expense. It is possible that the Company’s asset quality measures could worsen in future periods if the effects of COVID-19 are prolonged. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect: (1) the reported amounts of assets and liabilities, (2) the disclosure of contingent assets and liabilities at the date of the financial statements, and (3) the reported amounts of revenues and expenses during the reporting period. These estimates are based on information available to management at the time the estimates are made. Actual results could differ from those estimates. The results for the three months ended March 31, 2021 may not be indicative of results for the year ending December 31, 2021, or for any other period. All significant accounting policies followed in the preparation of the quarterly financial statements are disclosed in the Annual Report on Form 10-K for the year ended December 31, 2020, filed with the SEC on March 11, 2021. Segment Reporting The Company’s activities are considered to be one reportable segment. The Company is engaged in the business of commercial and retail banking, and trust and investment services, with operations throughout Iowa, the Minneapolis/St. Paul metropolitan area of Minnesota, western Wisconsin, Naples and Fort Myers, Florida, and Denver, Colorado. Substantially all income is derived from a diverse base of commercial, mortgage and retail lending activities, and investments.

Effect of New Financial Account

Effect of New Financial Accounting Standards	3 Months Ended
	Mar. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Effect of New Financial Accounting Standards	Effect of New Financial Accounting StandardsAccounting Guidance Pending Adoption at March 31, 2021 On March 12, 2020, the FASB issued ASU 2020-04, Reference Rate Reform (ASC 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting

Debt Securities

Debt Securities	3 Months Ended
	Mar. 31, 2021
Debt Securities [Abstract]
Debt Securities	Debt Securities The amortized cost and fair value of investment debt securities AFS, with gross unrealized gains and losses, were as follows: As of March 31, 2021 (in thousands) Amortized Gross Gross Allowance for Credit Loss related to Debt Securities Fair Value U.S. Government agencies and corporations $ 335 $ 5 $ — $ — $ 340 State and political subdivisions 672,120 9,510 7,707 — 673,923 Mortgage-backed securities 78,512 1,237 744 — 79,005 Collateralized mortgage obligations 717,112 4,546 5,677 — 715,981 Corporate debt securities 423,348 7,995 3,698 — 427,645 Total debt securities $ 1,891,427 $ 23,293 $ 17,826 $ — $ 1,896,894 As of December 31, 2020 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Loss related to Debt Securities Fair Value U.S. Government agencies and corporations $ 355 $ 6 $ — $ — $ 361 State and political subdivisions 611,666 17,163 483 — 628,346 Mortgage-backed securities 92,261 1,758 1 — 94,018 Collateralized mortgage obligations 559,718 6,332 214 — 565,836 Corporate debt securities 360,103 9,333 616 — 368,820 Total debt securities $ 1,624,103 $ 34,592 $ 1,314 $ — $ 1,657,381 Investment securities with a fair value of $516.1 million and $434.7 million at March 31, 2021 and December 31, 2020, respectively, were pledged on public deposits, securities sold under agreements to repurchase and for other purposes, as required or permitted by law. The following table presents debt securities AFS in an unrealized loss position for which an allowance for credit losses has not been recorded at March 31, 2021, aggregated by investment category and length of time in a continuous loss position: As of March 31, 2021 Number of Securities Less than 12 Months 12 Months or More Total Available for Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands, except number of securities) State and political subdivisions 145 $ 274,770 $ 7,413 $ 9,468 $ 294 $ 284,238 $ 7,707 Mortgage-backed securities 8 20,218 743 110 1 20,328 744 Collateralized mortgage obligations 22 392,272 5,677 — — 392,272 5,677 Corporate debt securities 28 143,592 3,543 750 155 144,342 3,698 Total 203 $ 830,852 $ 17,376 $ 10,328 $ 450 $ 841,180 $ 17,826 As of March 31, 2021, 145 state and political subdivisions securities with total unrealized losses of $7.7 million were held by the Company. Management evaluated these securities through a process that included consideration of credit agency ratings and payment history. In addition, management may evaluate securities by considering the yield spread to treasury securities and the most recent financial information available. Based on this evaluation, management concluded that the decline in fair value was not attributable to credit losses. As of March 31, 2021, 8 mortgage-backed securities and 22 collateralized mortgage obligations with unrealized losses totaling $6.4 million were held by the Company. Management evaluated the payment history of these securities. In addition, management considered the implied U.S. government guarantee of these agency securities and the level of credit enhancement for non-agency securities. Based on this evaluation, management concluded that the decline in fair value was not attributable to credit losses. As of March 31, 2021, 28 corporate debt securities with total unrealized losses of $3.7 million were held by the Company. Management evaluated these securities by considering credit agency ratings and payment history. In addition, management may evaluate securities by considering the yield spread to treasury securities and the most recent financial information available. Based on this evaluation, management concluded that the decline in fair value was not attributable to credit losses. Accrued interest receivable on available for sale debt securities, which is recorded within 'Other Assets,' totaled $7.8 million at March 31, 2021 and $7.3 million at December 31, 2020 and is excluded from the estimate of credit losses. The following table presents debt securities AFS in an unrealized loss position for which an allowance for credit losses has not been recorded at December 31, 2020, aggregated by investment category and length of time in a continuous loss position: As of December 31, 2020 Available for Sale Number of Securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands, except number of securities) State and political subdivisions 27 $ 31,489 $ 157 $ 4,065 $ 326 $ 35,554 $ 483 Mortgage-backed securities 7 315 1 — — 315 1 Collateralized mortgage obligations 8 133,032 214 — — 133,032 214 Corporate debt securities 15 35,995 523 3,311 93 39,306 616 Total 57 $ 200,831 $ 895 $ 7,376 $ 419 $ 208,207 $ 1,314 Proceeds and gross realized gains and losses on debt securities available for sale for the three months ended March 31, 2021 and 2020 were as follows: Three Months Ended (in thousands) March 31, 2021 March 31, 2020 Proceeds from sales of debt securities available for sale $ — $ 22,140 Gross realized gains from sales of debt securities available for sale — 155 Gross realized losses from sales of debt securities available for sale — (113) Net realized gain from sales of debt securities available for sale $ — $ 42 The contractual maturity distribution of investment debt securities at March 31, 2021, is shown below. Expected maturities of MBS and CMO may differ from contractual maturities because the mortgages underlying the securities may be called or prepaid without any penalties. Therefore, these securities are not included in the maturity categories in the following summary. Available For Sale (in thousands) Amortized Cost Fair Value Due in one year or less $ 35,751 $ 36,169 Due after one year through five years 304,392 310,792 Due after five years through ten years 418,530 416,063 Due after ten years 337,130 338,884 $ 1,095,803 $ 1,101,908 Mortgage-backed securities 78,512 79,005 Collateralized mortgage obligations 717,112 715,981 Total $ 1,891,427 $ 1,896,894

Loans Receivable and the Allowa

Loans Receivable and the Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loans Receivable and the Allowance for Credit Losses	Loans Receivable and the Allowance for Credit Losses The composition of loans by class of receivable was as follows: As of (in thousands) March 31, 2021 December 31, 2020 Agricultural $ 117,099 $ 116,392 Commercial and industrial 993,770 1,055,488 Commercial real estate: Construction & development 164,927 181,291 Farmland 138,199 144,970 Multifamily 261,806 256,525 Commercial real estate-other 1,128,660 1,149,575 Total commercial real estate 1,693,592 1,732,361 Residential real estate: One- to four- family first liens 337,408 355,684 One- to four- family junior liens 137,025 143,422 Total residential real estate 474,433 499,106 Consumer 79,267 78,876 Loans held for investment, net of unearned income 3,358,161 3,482,223 Allowance for credit losses (50,650) (55,500) Total loans held for investment, net $ 3,307,511 $ 3,426,723 Loans with unpaid principal in the amount of $835.8 million and $830.2 million at March 31, 2021 and December 31, 2020, respectively, were pledged to the FHLB as collateral for borrowings. Non-accrual and Delinquent Status Loans are placed on non-accrual when (1) payment in full of principal and interest is no longer expected or (2) principal or interest has been in default for 90 days or more unless the loan is both well secured with marketable collateral and in the process of collection. All loans rated doubtful or worse, and certain loans rated substandard, are placed on non-accrual. A non-accrual loan may be restored to an accrual status when (1) all past due principal and interest has been paid (excluding renewals and modifications that involve the capitalizing of interest) or (2) the loan becomes well secured with marketable collateral and is in the process of collection. An established track record of performance is also considered when determining accrual status. Loans are considered past due or delinquent when the contractual principal or interest due in accordance with the terms of the loan agreement or any portion thereof remains unpaid after the due date of the scheduled payment. The following table presents the amortized cost basis of loans based on delinquency status: Age Analysis of Past-Due Financial Assets 90 Days or More Past Due And Accruing (in thousands) Current 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total March 31, 2021 Agricultural $ 115,252 $ 513 $ 106 $ 1,228 $ 117,099 $ — Commercial and industrial 989,633 1,042 124 2,971 993,770 6 Commercial real estate: Construction and development 163,630 693 — 604 164,927 — Farmland 132,004 589 164 5,442 138,199 — Multifamily 259,564 2,242 — — 261,806 — Commercial real estate-other 1,112,419 785 — 15,456 1,128,660 — Total commercial real estate 1,667,617 4,309 164 21,502 1,693,592 — Residential real estate: One- to four- family first liens 334,061 2,337 141 869 337,408 468 One- to four- family junior liens 136,804 60 — 161 137,025 34 Total residential real estate 470,865 2,397 141 1,030 474,433 502 Consumer 79,134 94 6 33 79,267 — Total $ 3,322,501 $ 8,355 $ 541 $ 26,764 $ 3,358,161 $ 508 December 31, 2020 Agricultural $ 115,284 $ 8 $ 45 $ 1,055 $ 116,392 $ — Commercial and industrial 1,051,727 477 333 2,951 1,055,488 106 Commercial real estate: Construction and development 180,059 586 42 604 181,291 — Farmland 138,798 226 324 5,622 144,970 — Multifamily 256,525 — — — 256,525 — Commercial real estate-other 1,132,015 11,514 318 5,728 1,149,575 — Total commercial real estate 1,707,397 12,326 684 11,954 1,732,361 — Residential real estate: One- to four- family first liens 351,370 2,062 566 1,686 355,684 625 One- to four- family junior liens 142,663 377 234 148 143,422 — Total residential real estate 494,033 2,439 800 1,834 499,106 625 Consumer 78,747 43 39 47 78,876 8 Total $ 3,447,188 $ 15,293 $ 1,901 $ 17,841 $ 3,482,223 $ 739 The following table presents the amortized cost basis of loans on non-accrual status, and loans past due 90 days or more and still accruing by class of loan as of March 31, 2021 and December 31, 2020: Nonaccrual Nonaccrual with no Allowance for Credit Losses 90 Days or More Past Due And Accruing (in thousands) March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Agricultural $ 2,824 $ 2,584 $ 2,220 $ 1,599 $ — $ — Commercial and industrial 6,494 7,326 3,401 4,349 6 106 Commercial real estate: Construction and development 619 1,145 596 900 — — Farmland 10,458 8,319 8,834 7,266 — — Multifamily 1,096 746 37 39 — — Commercial real estate-other 19,695 19,134 2,933 2,497 — — Total commercial real estate 31,868 29,344 12,400 10,702 — — Residential real estate: One- to four- family first liens 1,863 1,895 353 75 468 625 One- to four- family junior liens 747 722 1 1 34 — Total residential real estate 2,610 2,617 354 76 502 625 Consumer 78 79 13 13 — 8 Total $ 43,874 $ 41,950 $ 18,388 $ 16,739 $ 508 $ 739 The interest income recognized on loans that were on nonaccrual for the three months ended March 31, 2021 and the three months ended March 31, 2020 is $236 thousand and $272 thousand, respectively. Credit Quality Information The Company aggregates loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as: current financial information, historical payment experience, credit documentation, and other factors. The Company analyzes loans individually to classify the loans as to credit risk. This analysis includes non-homogenous loans, such as agricultural, commercial and industrial, and commercial real estate loans. Loans not meeting the criteria described below that are analyzed individually are considered to be pass-rated. The Company uses the following definitions for risk ratings: Special Mention/Watch - A special mention/watch asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Company’s credit position at some future date. Special mention/watch assets are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification. Substandard - Substandard loans are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Doubtful - Loans classified as doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently known facts, conditions and values, highly questionable and improbable. Loss - Loans classified as loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be affected in the future. Homogenous loans, including residential real estate and consumer loans, are not individually risk rated. Instead, these loans are categorized based on performance: performing and nonperforming. Nonperforming loans include those loans on nonaccrual and loans greater than 90 days past due and on accrual. The following table sets forth the amortized cost basis of loans by class of receivable by credit quality indicator and vintage based on the most recent analysis performed, as of March 31, 2021. As of March 31, 2021, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans March 31, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Total Agricultural Pass $ 21,063 $ 13,560 $ 6,123 $ 2,169 $ 1,796 $ 2,501 $ 51,726 $ 98,938 Special mention / watch 1,485 3,259 1,066 75 94 1,326 4,680 11,985 Substandard 1,824 1,800 511 239 170 327 1,303 6,174 Doubtful — 1 — — — 1 — 2 Total $ 24,372 $ 18,620 $ 7,700 $ 2,483 $ 2,060 $ 4,155 $ 57,709 $ 117,099 Commercial and industrial Pass $ 137,814 $ 393,679 $ 91,939 $ 47,502 $ 59,720 $ 127,324 $ 108,875 $ 966,853 Special mention / watch 2,029 2,821 501 412 2,233 259 4,865 13,120 Substandard 1,092 3,440 1,378 861 464 3,688 2,869 13,792 Doubtful — — — — 1 3 1 5 Total $ 140,935 $ 399,940 $ 93,818 $ 48,775 $ 62,418 $ 131,274 $ 116,610 $ 993,770 CRE - Construction and development Pass $ 13,493 $ 84,966 $ 23,974 $ 10,652 $ 1,994 $ 1,344 $ 25,120 $ 161,543 Special mention / watch — 835 294 537 — 8 — 1,674 Substandard — 589 1,097 — — 24 — 1,710 Doubtful — — — — — — — — Total $ 13,493 $ 86,390 $ 25,365 $ 11,189 $ 1,994 $ 1,376 $ 25,120 $ 164,927 CRE - Farmland Pass $ 11,922 $ 45,736 $ 21,226 $ 6,170 $ 7,527 $ 16,130 $ 1,499 $ 110,210 Special mention / watch 2,113 5,349 4,582 1,039 656 236 148 14,123 Substandard 92 3,510 2,451 3,695 1,727 2,364 27 13,866 Doubtful — — — — — — — — Total $ 14,127 $ 54,595 $ 28,259 $ 10,904 $ 9,910 $ 18,730 $ 1,674 $ 138,199 CRE - Multifamily Pass $ 41,991 $ 151,623 $ 18,241 $ 3,888 $ 8,644 $ 23,693 $ 10,886 $ 258,966 Special mention / watch — 344 — — — 51 — 395 Substandard — 1,096 — — — 1,349 — 2,445 Doubtful — — — — — — — — Total $ 41,991 $ 153,063 $ 18,241 $ 3,888 $ 8,644 $ 25,093 $ 10,886 $ 261,806 CRE - other Pass $ 83,195 $ 486,080 $ 120,039 $ 46,016 $ 74,286 $ 115,050 $ 41,042 $ 965,708 Special mention / watch 5,116 53,445 6,732 12,761 5,883 4,536 282 88,755 Substandard 2,173 44,265 12,752 6,231 1,214 7,453 109 74,197 Doubtful — — — — — — — — Total $ 90,484 $ 583,790 $ 139,523 $ 65,008 $ 81,383 $ 127,039 $ 41,433 $ 1,128,660 RRE - One- to four- family first liens Performing $ 28,149 $ 100,073 $ 39,401 $ 37,074 $ 27,824 $ 95,272 $ 7,284 $ 335,077 Nonperforming 499 218 1 337 226 1,050 — 2,331 Total $ 28,648 $ 100,291 $ 39,402 $ 37,411 $ 28,050 $ 96,322 $ 7,284 $ 337,408 RRE - One- to four- family junior liens Performing $ 11,828 $ 17,822 $ 6,613 $ 10,069 $ 5,641 $ 7,683 $ 76,588 $ 136,244 Nonperforming — 32 143 209 16 230 151 781 Total $ 11,828 $ 17,854 $ 6,756 $ 10,278 $ 5,657 $ 7,913 $ 76,739 $ 137,025 Consumer Performing $ 12,390 $ 26,540 $ 11,168 $ 9,026 $ 4,108 $ 5,707 $ 10,250 $ 79,189 Nonperforming — 6 19 11 8 34 — 78 Total $ 12,390 $ 26,546 $ 11,187 $ 9,037 $ 4,116 $ 5,741 $ 10,250 $ 79,267 Term Loans by Origination Year Revolving Loans 2021 2020 2019 2018 2017 Prior Total Total by Credit Quality Indicator Category Pass $ 309,478 $ 1,175,644 $ 281,542 $ 116,397 $ 153,967 $ 286,042 $ 239,148 $ 2,562,218 Special mention / watch 10,743 66,053 13,175 14,824 8,866 6,416 9,975 130,052 Substandard 5,181 54,700 18,189 11,026 3,575 15,205 4,308 112,184 Doubtful — 1 — — 1 4 1 7 Performing 52,367 144,435 57,182 56,169 37,573 108,662 94,122 550,510 Nonperforming 499 256 163 557 250 1,314 151 3,190 Total $ 378,268 $ 1,441,089 $ 370,251 $ 198,973 $ 204,232 $ 417,643 $ 347,705 $ 3,358,161 The following table sets forth the amortized cost basis of loans by class of receivable by credit quality indicator and vintage based on the most recent analysis performed, as of December 31, 2020. As of December 31, 2020, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Total Agricultural Pass $ 17,836 $ 6,959 $ 2,764 $ 2,145 $ 1,386 $ 1,833 $ 60,802 $ 93,725 Special mention / watch 4,892 1,083 117 108 553 1,103 7,210 15,066 Substandard 4,075 650 258 183 121 226 2,086 7,599 Doubtful 1 — — — — 1 — 2 Total $ 26,804 $ 8,692 $ 3,139 $ 2,436 $ 2,060 $ 3,163 $ 70,098 $ 116,392 Commercial and industrial Pass $ 546,171 $ 105,523 $ 57,055 $ 61,753 $ 38,695 $ 92,526 $ 120,498 $ 1,022,221 Special mention / watch 3,410 572 497 2,261 611 112 4,796 12,259 Substandard 5,014 1,539 928 656 461 3,261 9,144 21,003 Doubtful — — — 1 — 3 1 5 Total $ 554,595 $ 107,634 $ 58,480 $ 64,671 $ 39,767 $ 95,902 $ 134,439 $ 1,055,488 CRE - Construction and development Pass $ 109,885 $ 25,972 $ 14,994 $ 2,696 $ 679 $ 876 $ 22,519 $ 177,621 Special mention / watch 843 298 542 — 9 3 — 1,695 Substandard 597 1,132 220 — — 26 — 1,975 Doubtful — — — — — — — — Total $ 111,325 $ 27,402 $ 15,756 $ 2,696 $ 688 $ 905 $ 22,519 $ 181,291 CRE - Farmland Pass $ 48,378 $ 25,022 $ 9,577 $ 10,490 $ 8,378 $ 13,003 $ 1,263 $ 116,111 Special mention / watch 8,088 4,583 935 660 361 237 — 14,864 Substandard 3,924 2,627 4,386 1,728 166 1,128 36 13,995 Doubtful — — — — — — — — Total $ 60,390 $ 32,232 $ 14,898 $ 12,878 $ 8,905 $ 14,368 $ 1,299 $ 144,970 CRE - Multifamily Pass $ 164,817 $ 18,992 $ 17,805 $ 10,706 $ 10,201 $ 19,581 $ 11,558 $ 253,660 Special mention / watch 345 — — — 59 — — 404 Substandard 1,099 — — — 1,362 — — 2,461 Doubtful — — — — — — — — Total $ 166,261 $ 18,992 $ 17,805 $ 10,706 $ 11,622 $ 19,581 $ 11,558 $ 256,525 CRE - other Pass $ 487,771 $ 129,388 $ 60,957 $ 83,393 $ 66,369 $ 91,698 $ 45,129 $ 964,705 Special mention / watch 71,141 14,870 12,415 5,953 3,756 4,335 455 112,925 Substandard 48,690 7,162 6,370 1,222 579 6,997 925 71,945 Doubtful — — — — — — — — Total $ 607,602 $ 151,420 $ 79,742 $ 90,568 $ 70,704 $ 103,030 $ 46,509 $ 1,149,575 RRE - One- to four- family first liens Performing $ 117,923 $ 46,581 $ 42,875 $ 30,628 $ 37,407 $ 68,501 $ 9,249 $ 353,164 Nonperforming 239 1 596 303 148 1,233 — 2,520 Total $ 118,162 $ 46,582 $ 43,471 $ 30,931 $ 37,555 $ 69,734 $ 9,249 $ 355,684 RRE - One- to four- family junior liens Performing $ 19,818 $ 7,973 $ 12,140 $ 6,152 $ 3,467 $ 5,354 $ 87,795 $ 142,699 Nonperforming 7 — 223 17 116 190 170 723 Total $ 19,825 $ 7,973 $ 12,363 $ 6,169 $ 3,583 $ 5,544 $ 87,965 $ 143,422 Consumer Performing $ 30,755 $ 13,662 $ 10,341 $ 4,960 $ 2,656 $ 6,306 $ 10,118 $ 78,798 Nonperforming 2 21 13 5 13 24 — 78 Total $ 30,757 $ 13,683 $ 10,354 $ 4,965 $ 2,669 $ 6,330 $ 10,118 $ 78,876 Term Loans by Origination Year Revolving Loans 2020 2019 2018 2017 2016 Prior Total Total by Credit Quality Indicator Category Pass $ 1,374,858 $ 311,856 $ 163,152 $ 171,183 $ 125,708 $ 219,517 $ 261,769 $ 2,628,043 Special mention / watch 88,719 21,406 14,506 8,982 5,349 5,790 12,461 157,213 Substandard 63,399 13,110 12,162 3,789 2,689 11,638 12,191 118,978 Doubtful 1 — — 1 — 4 1 7 Performing 168,496 68,216 65,356 41,740 43,530 80,161 107,162 574,661 Nonperforming 248 22 832 325 277 1,447 170 3,321 Total $ 1,695,721 $ 414,610 $ 256,008 $ 226,020 $ 177,553 $ 318,557 $ 393,754 $ 3,482,223 Allowance for Credit Losses At March 31, 2021, the economic forecast used by the Company showed the following: (1) Midwest unemployment – slight increase in the next forecasted quarter followed by decreases in the following three forecasted quarters; (2) Year-to-year change in national retail sales - increases over the next four forecasted quarters; (3) Year-to-year change in CRE Index - decreases over the next four forecasted quarters; (4) Year-to-year change in U.S. GDP - increases over the next four forecasted quarters; (5) Year-to-year change in National Home Price Index – increases over the next four forecasted quarters; and (6) Rental Vacancy - an increase over the next two forecasted quarters, followed by a decline in the third and fourth forecasted quarters. Overall, economic forecast loss driver data improved when compared to the previously disclosed fourth quarter of 2020 results. We have made a policy election to report interest receivable as a separate line on the balance sheet. Accrued interest receivable, which is recorded within 'Other Assets', totaled $11.7 million at March 31, 2021 and $14.2 million at December 31, 2020 and is excluded from the estimate of credit losses. The changes in the allowance for credit losses by portfolio segment were as follows: For the Three Months Ended March 31, 2021 and 2020 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Three Months Ended March 31, 2021 Beginning balance $ 1,346 $ 15,689 $ 32,640 $ 4,882 $ 943 $ 55,500 Charge-offs (41) (666) (66) (35) (195) (1,003) Recoveries 27 292 306 9 53 687 Credit loss (benefit) expense (1) (222) (1,671) (2,455) (201) 15 (4,534) Ending balance $ 1,110 $ 13,644 $ 30,425 $ 4,655 $ 816 $ 50,650 For the Three Months Ended March 31, 2020 Beginning balance $ 3,748 $ 8,394 $ 13,804 $ 2,685 $ 448 $ 29,079 Day 1 transition adjustment from adoption of ASC 326 (2,557) 2,728 1,300 2,050 463 3,984 Charge-offs (84) (471) (720) — (222) (1,497) Recoveries 25 213 8 7 46 299 Credit loss expense (1) 14 8,445 8,746 1,683 434 19,322 Ending balance $ 1,146 $ 19,309 $ 23,138 $ 6,425 $ 1,169 $ 51,187 (1) The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss (benefit) expense of $(0.2) million and $2.4 million related to off-balance sheet credit exposures for the three months ended March 31, 2021 and March 31, 2020, respectively. The composition of allowance for credit losses by portfolio segment based on evaluation method were as follows: As of March 31, 2021 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total Loans held for investment, net of unearned income Individually evaluated for impairment $ 2,463 $ 5,591 $ 30,949 $ 692 $ 8 $ 39,703 Collectively evaluated for impairment 114,636 988,179 1,662,643 473,741 79,259 3,318,458 Total $ 117,099 $ 993,770 $ 1,693,592 $ 474,433 $ 79,267 $ 3,358,161 Allowance for credit losses: Individually evaluated for impairment $ 39 $ 773 $ 2,486 $ 170 $ — $ 3,468 Collectively evaluated for impairment 1,071 12,871 27,939 4,485 816 47,182 Total $ 1,110 $ 13,644 $ 30,425 $ 4,655 $ 816 $ 50,650 As of December 31, 2020 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total Loans held for investment, net of unearned income Individually evaluated for impairment $ 2,088 $ 6,582 $ 28,235 $ 427 $ 8 $ 37,340 Collectively evaluated for impairment 114,304 1,048,906 1,704,126 498,679 78,868 3,444,883 Total $ 116,392 $ 1,055,488 $ 1,732,361 $ 499,106 $ 78,876 $ 3,482,223 Allowance for credit losses: Individually evaluated for impairment $ 66 $ 799 $ 2,031 $ 179 $ — $ 3,075 Collectively evaluated for impairment 1,280 14,890 30,609 4,703 943 52,425 Total $ 1,346 $ 15,689 $ 32,640 $ 4,882 $ 943 $ 55,500 The following table presents the amortized cost basis of collateral dependent loans, by the primary collateral type, which are individually evaluated to determine expected credit losses, and the related ACL allocated to these loans: As of March 31, 2021 (in thousands) Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 963 $ 758 $ 742 $ 2,463 $ 39 Commercial and industrial 629 2,366 2,596 5,591 773 Commercial real estate: Construction and development 595 — — 595 — Farmland 10,132 — — 10,132 123 Multifamily 1,096 — — 1,096 452 Commercial real estate-other 19,126 — — 19,126 1,911 Residential real estate: One- to four- family first liens 483 — — 483 132 One- to four- family junior liens 209 — — 209 38 Consumer — 8 — 8 — Total $ 33,233 $ 3,132 $ 3,338 $ 39,703 $ 3,468 As of December 31, 2020 (in thousands) Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 516 $ 824 $ 748 $ 2,088 $ 66 Commercial and industrial 667 3,037 2,878 6,582 799 Commercial real estate: Construction and development 899 — — 899 — Farmland 7,850 — — 7,850 88 Multifamily 746 — — 746 202 Commercial real estate-other 18,740 — — 18,740 1,741 Residential real estate: One- to four- family first liens 204 — — 204 132 One- to four- family junior liens 223 — — 223 47 Consumer — 8 — 8 — Total $ 29,845 $ 3,869 $ 3,626 $ 37,340 $ 3,075 Troubled Debt Restructurings TDRs totaled $9.9 million and $11.0 million as of March 31, 2021 and December 31, 2020, respectively. As of March 31, 2021, the Company had $7 thousand of commitments to lend additional funds to borrowers with loans classified as TDR. The following table sets forth information on the Company's TDRs by class of financing receivable occurring during the stated periods. TDRs include multiple concessions, and the disclosure classifications in the table are based on the primary concession provided to the borrower. Three Months Ended March 31, 2021 2020 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (dollars in thousands) CONCESSION - Extended maturity date Commercial and industrial — $ — $ — 1 $ 242 $ 242 Commercial real estate-other — — — 2 485 485 One- to four- family first liens 1 93 93 — — — CONCESSION - Other Commercial real estate-other 1 44 44 — — — One- to four- family first liens 1 150 150 — — — Total 3 $ 287 $ 287 3 $ 727 $ 727 For the three months ended March 31, 2021 and March 31, 2020, the Company had zero TDRs that redefaulted within 12 months subsequent to restructure. Modifications in response to COVID-19: The Company began offering short-term loan modifications to assist borrowers during the COVID-19 pandemic. The CARES Act, as extended by the Consolidated Appropriation Acts, 2021, along with a joint interagency statement issued by the federal banking agencies provide that short-term modifications made in response to COVID-19 do not need to be accounted for as a TDR. Accordingly, the Company does not account for such loan modifications as TDRs. The Company's loan modifications allow for the initial deferral of three months of principal and/or interest. The deferred interest is due and payable at the end of the deferral period and the deferred principal is due and payable on the maturity date. At March 31, 2021, the outstanding balance of loans modified as a result of the COVID-19 pandemic totaled $16.7 million. The program is ongoing and additional loans continue to be granted deferrals.

Derivatives, Hedging Activities

Derivatives, Hedging Activities and Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Hedging Activities and Balance Sheet Offsetting	Derivatives, Hedging Activities and Balance Sheet Offsetting The following table presents the total notional amounts and gross fair values of the Company’s derivatives as of the dates indicated. The derivative asset and liability balances are presented on a gross basis, prior to the application of master netting agreements, as included in other assets and other liabilities, respectively, on the consolidated balance sheets. The fair values of the Company's derivative instrument assets and liabilities are summarized as follows: As of March 31, 2021 As of December 31, 2020 Notional Amount Fair Value Notional Amount Fair Value (in thousands) Assets Liabilities Assets Liabilities Designated as hedging instruments Fair value hedges Interest rate swaps $ 25,373 $ 547 $ 1,329 $ 25,559 $ 34 $ 2,452 Total $ 25,373 $ 547 $ 1,329 $ 25,559 $ 34 $ 2,452 Not designated as hedging instruments: Interest rate swaps $ 346,944 $ 6,346 $ 6,361 $ 347,380 $ 10,758 $ 10,807 RPAs - protection sold 4,412 1 — 4,471 4 — RPAs - protection purchased 9,778 — 4 9,825 — 8 Total $ 361,134 $ 6,347 $ 6,365 $ 361,676 $ 10,762 $ 10,815 Derivatives Designated as Hedging Instruments The Company uses derivative instruments to hedge its exposure to economic risks, including interest rate, liquidity, and credit risk. Certain hedging relationships are formally designated and qualify for hedge accounting under GAAP as fair value or cash flow hedges. Fair Value Hedges - Derivatives are designated as fair value hedges to limit the Company's exposure to changes in the fair value of assets or liabilities due to movements in interest rates. The Company entered into pay-fixed receive-floating interest rate swaps to manage its exposure to changes in fair value in certain fixed-rate assets. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest income. Cash Flow Hedges - Derivatives are designated as cash flow hedges in order to minimize the variability in cash flows of earning assets or forecasted transactions caused by movement in interest rates. In February 2020, the Company entered into a pay-fixed receive-variable interest rate swap with a notional amount of $30.0 million to hedge against adverse fluctuations in interest rates by reducing exposure to variability in cash flows relating to interest payments on the Company's variable rate debt. The interest rate swap was designated as a cash flow hedge. The gain or loss on the derivative was recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. The Company terminated its cash flow hedge in the fourth quarter of 2020. The table below presents the effect of cash flow hedge accounting on AOCI for three months ended March 31, 2021 and 2020. Amount of Gain (Loss) Recognized in AOCI on Derivative Location of Gain (Loss) Reclassified from AOCI into Income Amount of Gain (Loss) Reclassified from AOCI into Income Three Months Ended March 31, Three Months Ended March 31, (in thousands) 2021 2020 2021 2020 Interest rate swaps $ — $ (888) Interest Expense $ — $ 5 The table below presents the effect of the Company’s derivative financial instruments designated as hedging instruments on the consolidated statements of income for the periods indicated: Location and Amount of Gain or Loss Recognized in Income on Fair Value and Cash Flow Hedging Relationships For the Three Months Ended March 31, 2021 2020 (in thousands) Interest Income Other Income Interest Income Other Income Total amounts of income and expense line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded $ (108) $ — $ (47) $ — The effects of fair value and cash flow hedging: Gain (loss) on fair value hedging relationships in subtopic 815-20: Interest contracts: Hedged items (1,633) — 1,750 — Derivative designated as hedging instruments 1,123 — (1,761) — Income statement effect of cash flow hedging relationships in subtopic 815-20: Interest contracts: Amount reclassified from AOCI into income — — 5 — As of March 31, 2021, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: Line Item in the Balance Sheet in Which the Hedged Item is Included Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset (in thousands) Loans $ 26,173 $ 786 Derivatives Not Designated as Hedging Instruments Interest Rate Swaps - The Company has also entered into interest rate swap contracts. The derivative contracts related to transactions in which the Company enters into an interest rate swap with a customer, while simultaneously entering into an offsetting interest rate swap with an institutional counterparty. Credit Risk Participation Agreements - The Company enters into RPAs to manage the credit exposure on interest rate contracts associated with a syndicated loan. The Company may enter into protection purchased RPAs with institutional counterparties to decrease or increase its exposure to a borrower. Under the RPA, the Company will receive or make payment if a borrower defaults on the related interest rate contract. The Company manages its credit risk on RPAs by monitoring the creditworthiness of the borrowers and institutional counterparties, which is based on the normal credit review process. The notional amount of the RPAs reflects the Company’s pro-rata share of the derivative instrument. The following table presents the net gains (losses) recognized on the consolidated statements of income related to the derivatives not designated as hedging instruments for the periods indicated: Location in the Consolidated Statements of Income For the Three Months Ended March 31, (in thousands) 2021 2020 Interest rate swaps Other income $ (34) $ 141 RPAs Other income — 103 Total $ (34) $ 244 Offsetting of Derivatives The Company has entered into agreements with certain counterparty financial institutions, which include master netting agreements. However, the Company has elected to account for all derivatives with counterparty institutions on a gross basis. The Company manages the risk of default by its borrower counterparties through its normal loan underwriting and credit monitoring policies and procedures. The table below presents gross derivatives and the respective collateral received or pledged in the form of other financial instruments as of March 31, 2021 and December 31, 2020, which are generally marketable securities and/or cash. The collateral amounts in the table below are limited to the outstanding balances of the related asset or liability (after netting is applied); thus instances of over-collateralization are not shown. Further, the net amounts of derivative assets or liabilities can be reconciled to the tabular disclosure of fair value. The tabular disclosure of fair value provides the location that derivative assets and liabilities are presented on the consolidated balance sheets. Gross Amounts Not Offset in the Balance Sheet (in thousands) Gross Amounts of Recognized Assets (Liabilities) Gross Amounts Offset in the Balance Sheet Net Amounts of Assets (Liabilities) presented in the Balance Sheet Financial Instruments Cash Collateral Received (Paid) Net Assets (Liabilities) As of March 31, 2021 Asset Derivatives $ 6,894 $ — $ 6,894 $ — $ — $ 6,894 Liability Derivatives (7,694) — (7,694) — (2,140) (5,554) As of December 31, 2020 Asset Derivatives $ 10,796 $ — $ 10,796 $ — $ — $ 10,796 Liability Derivatives (13,267) — (13,267) — (13,267) — Credit-risk-related Contingent Features The Company has an unsecured federal funds line with its institutional derivative counterparty. The Company has an agreement with its institutional derivative counterparty that contains a provision under which if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has an agreement with its derivative counterparty that contains a provision under which the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness. As of March 31, 2021, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $5.0 million. As of March 31, 2021, the Company had minimum collateral posting thresholds with certain of its derivative counterparties and has posted $2.1 million of collateral related to these agreements. If the Company had breached any of these provisions at March 31, 2021, it could have been required to settle its obligations under the agreements at their termination value of $5.0 million.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The carrying amount of goodwill was $62.5 million at March 31, 2021 and December 31, 2020. The following table presents the gross carrying amount, accumulated amortization, and net carrying amount of other intangible assets at the dates indicated: As of March 31, 2021 As of December 31, 2020 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (27,628) $ 14,117 $ 41,745 $ (26,440) $ 15,305 Customer relationship intangible 5,265 (2,920) 2,345 5,265 (2,630) 2,635 Other 2,700 (2,467) 233 2,700 (2,438) 262 $ 49,710 $ (33,015) $ 16,695 $ 49,710 $ (31,508) $ 18,202 Indefinite-lived trade name intangible $ 7,040 $ 7,040 The following table provides the estimated future amortization expense for the remaining nine months ending December 31, 2021 and the succeeding annual periods: (in thousands) Core Deposit Intangible Customer Relationship Intangible Other Total Estimated Remaining Amortization Expense for the Year Ending December 31, 2021 $ 3,002 $ 772 $ 77 $ 3,851 2022 3,487 797 79 4,363 2023 2,833 518 51 3,402 2024 2,180 239 24 2,443 2025 1,526 19 2 1,547 Thereafter 1,089 — — 1,089 Total $ 14,117 $ 2,345 $ 233 $ 16,695

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2021
Other Assets [Abstract]
Other Assets	Other Assets The components of the Company's other assets as of March 31, 2021 and December 31, 2020 were as follows: (in thousands) March 31, 2021 December 31, 2020 Bank-owned life insurance $ 84,024 $ 83,483 Interest receivable 19,749 21,706 FHLB stock 12,170 13,784 Mortgage servicing rights 5,928 5,137 Operating lease right-of-use assets, net 3,364 3,613 Federal and state income taxes, deferred 10,294 3,845 Derivative assets 6,894 10,796 Other receivables/assets 13,102 11,129 $ 155,525 $ 153,493

Deposits

Deposits	3 Months Ended
	Mar. 31, 2021
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of our deposits as of the dates indicated: (in thousands) March 31, 2021 December 31, 2020 Noninterest bearing deposits $ 958,526 $ 910,655 Interest checking deposits 1,406,070 1,351,641 Money market deposits 950,300 918,654 Savings deposits 580,862 529,751 Time deposits under $250 558,338 581,471 Time deposits of $250 or more 340,467 254,877 Total deposits $ 4,794,563 $ 4,547,049 The Company had $6.2 million and $7.8 million in reciprocal time deposits through the CDARS program as of March 31, 2021 and December 31, 2020, respectively. Included in interest-bearing checking and money market deposits at March 31, 2021 and December 31, 2020 were $17.2 million and $14.8 million, respectively, of reciprocal deposits in the ICS program. The CDARS and ICS programs coordinate, on a reciprocal basis, a network of banks to spread deposits exceeding the FDIC insurance coverage limits out to numerous institutions in order to provide insurance coverage for all participating deposits. As of March 31, 2021 and December 31, 2020, the Company had public entity deposits that were collateralized by investment securities of $244.9 million and $156.7 million, respectively.

Short-Term Borrowings

Short-Term Borrowings	3 Months Ended
	Mar. 31, 2021
Short-term Debt [Abstract]
Short-Term Borrowings	Short-Term Borrowings The following table summarizes our short-term borrowings as of the dates indicated: March 31, 2021 December 31, 2020 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Securities sold under agreements to repurchase 0.25 % $ 175,785 0.28 % $ 174,289 Federal Home Loan Bank advances — — 0.29 56,500 Total 0.25 % $ 175,785 0.28 % $ 230,789 Securities Sold Under an Agreement to Repurchase - Securities sold under agreements to repurchase are agreements in which the Company acquires funds by selling assets to another party under a simultaneous agreement to repurchase the same assets at a specified price and date. The Company enters into repurchase agreements and also offers a demand deposit account product to customers that sweeps their balances in excess of an agreed upon target amount into overnight repurchase agreements. All securities sold under agreements to repurchase are recorded on the face of the balance sheet. Federal Home Loan Bank Advances - The Bank has a secured line of credit with the FHLBDM. Advances from the FHLBDM are collateralized primarily by one- to four-family residential, commercial and agricultural real estate first mortgages equal to various percentages of the total outstanding notes. See Note 4. Loans Receivable and the Allowance for Credit Losses of the notes to the consolidated financial statements. Unsecured Line of Credit - The Bank has unsecured federal funds lines totaling $145.0 million from multiple correspondent banking relationships. There were no borrowings from such lines at either March 31, 2021 or December 31, 2020. Other - At March 31, 2021 and December 31, 2020, the Company had no Federal Reserve Discount Window borrowings, while the financing capacity was $64.8 million as of March 31, 2021 and $67.7 million as of December 31, 2020. As of March 31, 2021 and December 31, 2020, the Bank had municipal securities with a market value of $69.9 million and $72.0 million, respectively, pledged to the Federal Reserve Bank of Chicago to secure potential borrowings. The Company has a credit agreement with a correspondent bank with a revolving commitment of $25.0 million with interest payable at a rate of one-month LIBOR plus 1.75%. Fees are paid on the average daily unused revolving commitment in the amount of 0.30% per annum. The credit agreement matures on September 30, 2021. The Company had no balance outstanding under this revolving credit facility as of both March 31, 2021 and December 31, 2020.

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Junior Subordinated Notes Issued to Capital Trusts The table below summarizes the terms of each issuance of junior subordinated notes outstanding as of the dates indicated: (in thousands) Face Value Book Value Interest Rate Rate Maturity Date Callable Date March 31, 2021 ATBancorp Statutory Trust I $ 7,732 $ 6,859 Three-month LIBOR + 1.68% 1.86 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,864 Three-month LIBOR + 1.65% 1.83 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,775 Three-month LIBOR + 2.15% 2.35 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,845 Three-month LIBOR + 3.50% 3.68 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.77 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,807 December 31, 2020 ATBancorp Statutory Trust I $ 7,732 $ 6,850 Three-month LIBOR + 1.68% 1.90 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,850 Three-month LIBOR + 1.65% 1.87 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,767 Three-month LIBOR + 2.15% 2.39 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,832 Three-month LIBOR + 3.50% 3.72 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.81 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,763 The trust preferred securities are subject to mandatory redemption, in whole or in part, upon repayment of the junior subordinated notes at the stated maturity date or upon redemption of the junior subordinated notes. Each trust’s ability to pay amounts due on the trust preferred securities is solely dependent upon the Company making payment on the related junior subordinated notes. The Company’s obligation under the junior subordinated notes and other relevant trust agreements, in aggregate, constitutes a full and unconditional guarantee by the Company of each trust’s obligations under the trust preferred securities issued by each trust. The Company has the right to defer payment of interest on the junior subordinated notes and, therefore, distributions on the trust preferred securities, for up to five years, but not beyond the stated maturity date in the table above. During any such deferral period the Company may not pay cash dividends on its stock and generally may not repurchase its stock. Subordinated Debentures On May 1, 2019, with the acquisition of ATBancorp, the Company assumed $10.9 million of subordinated debentures (the "ATB Debentures"). The ATB Debentures have a stated maturity of May 31, 2023, and bear interest at a fixed annual rate of 6.50%, with interest payable semi-annually. The Company has the option to redeem the debentures, in whole or part, at any time on or after May 31, 2021. On July 28, 2020, the Company completed the private placement offering of $65.0 million of its subordinated notes, of which $63.75 million have been exchanged for subordinated notes registered under the Securities Act of 1933. The 5.75% fixed-to-floating rate subordinated notes are due July 30, 2030. The ATB Debentures and subordinated notes constitute Tier 2 capital under the rules and regulations of the Federal Reserve applicable to the capital status of the subordinated debt of bank holding companies. The ATB Debentures and subordinated notes are phased out of Tier 2 capital by 20% of the amount of the debentures or subordinated notes in each of the five years beginning on the fifth anniversary preceding the maturity date of each debenture. At March 31, 2021, we were permitted to treat 40% of the ATB Debentures as Tier 2 capital, and all of the subordinated notes as Tier 2 capital. Other Long-Term Debt Long-term borrowings were as follows as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Finance lease payable 8.89 % $ 1,061 8.89 % $ 1,096 FHLB borrowings 1.90 84,174 1.92 91,198 Total 1.99 % $ 85,235 2.00 % $ 92,294 The Company utilizes FHLB borrowings as a funding source to supplement customer deposits and to assist in managing interest rate risk. As a member of the FHLBDM, the Bank may borrow funds from the FHLB in amounts up to 45% of the Bank’s total assets, provided the Bank is able to pledge an adequate amount of qualified assets to secure the borrowings. Advances from the FHLB are collateralized primarily by one- to four-family residential, commercial and agricultural real estate first mortgages equal to various percentages of the total outstanding notes. See Note 4. Loans Receivable and the Allowance for Credit Losses of the notes to the consolidated financial statements. At March 31, 2021, FHLB long-term borrowings included advances from the FHLBC, which were collateralized by investment securities. See Note 3. Debt Securities of the notes to the consolidated financial statements. As of March 31, 2021, FHLB borrowings were as follows: (in thousands) Weighted Average Rate Amount Due in 2021 0.76 % $ 36,000 Due in 2022 2.68 % 31,000 Due in 2023 2.79 % 11,000 Due in 2024 3.15 % 6,000 Total 84,000 Valuation adjustment from acquisition accounting 174 Total $ 84,174

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended March 31, (dollars in thousands, except per share amounts) 2021 2020 Basic Earnings (Loss) Per Share: Net income (loss) $ 21,648 $ (1,975) Weighted average shares outstanding 15,990,724 16,141,500 Basic earnings (loss) per common share $ 1.35 $ (0.12) Diluted Earnings (Loss) Per Share: Net income (loss) $ 21,648 $ (1,975) Weighted average shares outstanding, including all dilutive potential shares 16,020,920 16,141,500 Diluted earnings (loss) per common share $ 1.35 $ (0.12) The weighted average shares that have an antidilutive effect in the calculation of diluted earnings per common share and have been excluded from the computation above were as follows: Three Months Ended March 31, 2021 2020 Dilutive shares (1) — 18,042 (1) Dilutive potential shares that were excluded from the computation of diluted earnings per common share for the three months ended March 31, 2020 as a result of the reported net loss available to common shareholders.

Regulatory Capital Requirements

Regulatory Capital Requirements and Restrictions on Subsidiary Cash	3 Months Ended
	Mar. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital Requirements and Restrictions on Subsidiary Cash	Regulatory Capital Requirements and Restrictions on Subsidiary Cash Regulatory Capital and Reserve Requirement - The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company's consolidated financial statements. The capital amounts and classification also are subject to qualitative judgments by the regulators about components, risk weightings and other factors. As of March 31, 2021 and December 31, 2020, the Bank was not required to maintain reserve balances in cash on hand or on deposit with Federal Reserve Banks, and therefore the total amount held in reserve for each of these periods was zero dollars. A comparison of the Company's and the Bank's capital with the corresponding minimum regulatory requirements in effect as of March 31, 2021 and December 31, 2020, is presented below: Actual For Capital Adequacy Purposes With Capital Conservation Buffer(1) To Be Well Capitalized Under Prompt Corrective Action Provisions (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At March 31, 2021 Consolidated: Total capital/risk weighted assets $589,205 13.75% $450,010 10.50% N/A N/A Tier 1 capital/risk weighted assets 477,086 11.13 364,294 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 435,279 10.16 300,006 7.00 N/A N/A Tier 1 leverage capital/average assets 477,086 8.78 217,315 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $563,501 13.19% $448,555 10.50% $427,195 10.00% Tier 1 capital/risk weighted assets 520,716 12.19 363,116 8.50 341,756 8.00 Common equity tier 1 capital/risk weighted assets 520,716 12.19 299,037 7.00 277,677 6.50 Tier 1 leverage capital/average assets 520,716 9.60 216,913 4.00 271,142 5.00 At December 31, 2020 Consolidated: Total capital/risk weighted assets $572,437 13.41% $448,068 10.50% N/A N/A Tier 1 capital/risk weighted assets 456,526 10.70 362,722 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 414,763 9.72 298,712 7.00 N/A N/A Tier 1 leverage capital/average assets 456,526 8.50 214,795 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $547,558 12.89% $446,113 10.50% $424,870 10.00% Tier 1 capital/risk weighted assets 500,981 11.79 361,139 8.50 339,896 8.00 Common equity tier 1 capital/risk weighted assets 500,981 11.79 297,409 7.00 276,165 6.50 Tier 1 leverage capital/average assets 500,981 9.35 214,251 4.00 271,992 5.00 (1) Includes a capital conservation buffer of 2.50%. Subordinated Notes - The Company completed a private placement of $65.0 million aggregate principal amount of 5.75% fixed-to-floating rate subordinated notes on July 28, 2020. The subordinated notes are intended to qualify as Tier 2 capital for regulatory purposes, and the Company is using the net proceeds from the offering for general corporate purposes and to support its organic growth plans, including maintaining its regulatory capital ratios.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Credit-related financial instruments - The Bank is a party to 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, commitments to sell loans, and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheets. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The following table summarizes the Bank's commitments as of the dates indicated: March 31, 2021 December 31, 2020 (in thousands) Commitments to extend credit $ 920,493 $ 897,274 Commitments to sell loans 58,333 59,956 Standby letters of credit 21,417 34,212 Total $ 1,000,243 $ 991,442 The Bank’s exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. 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. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation of the party. Collateral held varies, but may include accounts receivable, crops, livestock, inventory, property and equipment, residential real estate and income-producing commercial properties. Commitments to sell loans are agreements to sell loans held for sale to third parties at an agreed upon price. Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Bank holds collateral, which may include accounts receivable, inventory, property, equipment and income-producing properties, that support those commitments, if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Bank would be required to fund the commitment. The maximum potential amount of future payments the Bank could be required to make is represented by the contractual amount shown in the summary above. If the commitment is funded, the Bank would be entitled to seek recovery from the customer. Liability for Off-Balance Sheet Credit Losses - The Company records a liability for off-balance sheet credit losses through a charge to credit loss expense (or a reversal of credit loss expense) on the Company's consolidated statements of income and other liabilities on the Company's consolidated balance sheets. At March 31, 2021, the liability for off-balance-sheet credit losses totaled $3.9 million, whereas the total amount of the liability as of December 31, 2020 was $4.1 million. The total amount recorded in credit loss (benefit) expense for the three months ended March 31, 2021 and March 31, 2020 was $(0.2) million and $2.4 million, respectively. Litigation - In the normal course of business, the Company and its subsidiaries have been named, from time to time, as defendants in various legal actions. Certain of the actual or threatened legal actions may include claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages. Management, after consulting with legal counsel, is of the opinion that the ultimate liability, if any, resulting from these pending or threatened actions and proceedings will not have a material effect on the financial statements of the Company. Concentrations of credit risk - Substantially all of the Bank’s loans, commitments to extend credit and standby letters of credit have been granted to customers in the Bank’s market areas. Although the loan portfolio of the Bank is diversified, approximately 60% of the loans are real estate loans, excluding farmland, and approximately 8% are agriculturally related. The concentrations of credit by type of loan are set forth in Note 4. Loans Receivable and the Allowance for Credit Losses

Fair Value of Financial Instrum

Fair Value of Financial Instruments and Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments and Fair Value Measurements	Fair Value of Financial Instruments and Fair Value Measurements Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: • Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 – Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. For information regarding the valuation methodologies used to measure the Company's assets recorded at fair value (under ASC Topic 820), and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825, as amended by ASU 2016-01 and ASU 2018-03), see Note 1. Nature of Business and Significant Accounting Policies and Note 20. Estimated Fair Value of Financial Instruments and Fair Value Measurements to the consolidated financial statements in the Company's 2020 Annual Report on Form 10-K, filed with the SEC on March 11, 2021. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily available for sale debt securities, derivatives and mortgage servicing rights. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered "nonrecurring" for purposes of disclosing the Company's fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for collateral dependent individually analyzed loans and other real estate owned. Recurring Basis The following table summarizes assets and liabilities measured at fair value on a recurring basis as of the dates indicated, by level within the fair value hierarchy: Fair Value Measurement at March 31, 2021 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Available for sale debt securities: U.S. Government agencies and corporations $ 340 $ — $ 340 $ — State and political subdivisions 673,923 — 673,923 — Mortgage-backed securities 79,005 — 79,005 — Collateralized mortgage obligations 715,981 — 715,981 — Corporate debt securities 427,645 — 427,645 — Derivative assets 6,894 — 6,894 — Mortgage servicing rights 5,928 — 5,928 — Liabilities: Derivative liabilities $ 7,694 $ — $ 7,694 $ — Fair Value Measurement at December 31, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Debt securities available for sale: U.S. Government agencies and corporations $ 361 $ — $ 361 $ — State and political subdivisions 628,346 — 628,346 — Mortgage-backed securities 94,018 — 94,018 — Collateralized mortgage obligations 565,836 — 565,836 — Corporate debt securities 368,820 — 368,820 — Derivative assets 10,796 — 10,796 — Mortgage servicing rights 5,137 — 5,137 — Liabilities: Derivative liabilities $ 13,267 $ — $ 13,267 $ — There were no transfers of assets between Level 3 and other levels of the fair value hierarchy during the three months ended March 31, 2021 or the year ended December 31, 2020. Changes in the fair value of available for sale debt securities are included in other comprehensive income. Nonrecurring Basis The following tables presents assets measured at fair value on a nonrecurring basis as of the dates indicated: Fair Value Measurement at March 31, 2021 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 36,235 $ — $ — $ 36,235 Foreclosed assets, net 1,487 — — 1,487 Fair Value Measurement at December 31, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 34,265 $ — $ — $ 34,265 Foreclosed assets, net 2,316 — — 2,316 The following table presents the valuation technique(s), unobservable inputs, and quantitative information about the unobservable inputs used for fair value measurements of the financial instruments held by the Company and categorized within Level 3 of the fair value hierarchy as of the dates indicated: Fair Value at (dollars in thousands) March 31, 2021 December 31, 2020 Valuation Techniques(s) Unobservable Input Range of Inputs Weighted Average Collateral dependent individually analyzed loans $ 36,235 $ 34,265 Fair value of collateral Valuation adjustments — % - 91 % 22 % Foreclosed assets, net $ 1,487 $ 2,316 Fair value of collateral Valuation adjustments 8 % - 66 % 32 % Changes in assumptions or estimation methodologies may have a material effect on these estimated fair values. The carrying amount and estimated fair value of financial instruments at March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 (in thousands) Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 145,769 $ 145,769 $ 145,769 $ — $ — Debt securities available for sale 1,896,894 1,896,894 — 1,896,894 — Loans held for sale 58,333 58,608 — 58,608 — Loans held for investment, net 3,307,511 3,341,347 — — 3,341,347 Interest receivable 19,749 19,749 — 19,749 — FHLB stock 12,170 12,170 — 12,170 — Derivative assets 6,894 6,894 — 6,894 — Financial liabilities: Noninterest bearing deposits 958,526 958,526 958,526 — — Interest bearing deposits 3,836,037 3,838,265 2,937,232 901,033 — Short-term borrowings 175,785 175,785 175,785 — — Finance leases payable 1,061 1,061 — 1,061 — FHLB borrowings 84,174 85,986 — 85,986 — Junior subordinated notes issued to capital trusts 41,807 34,066 — 34,066 — Subordinated debentures 74,654 78,388 — 78,388 — Derivative liabilities 7,694 7,694 — 7,694 — December 31, 2020 (in thousands) Carrying Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 82,659 $ 82,659 $ 82,659 $ — $ — Debt securities available for sale 1,657,381 1,657,381 — 1,657,381 — Loans held for sale 59,956 60,039 — 60,039 — Loans held for investment, net 3,426,723 3,469,515 — — 3,469,515 Interest receivable 21,706 21,706 — 21,706 — FHLB stock 13,784 13,784 — 13,784 — Derivative assets 10,796 10,796 — 10,796 — Financial liabilities: Noninterest bearing deposits 910,655 910,655 910,655 — — Interest bearing deposits 3,636,394 3,640,365 2,800,046 840,319 Short-term borrowings 230,789 230,789 230,789 — — Finance leases payable 1,096 1,096 — 1,096 — FHLB borrowings 91,198 93,380 — 93,380 Junior subordinated notes issued to capital trusts 41,763 33,986 — 33,986 Subordinated debentures 74,634 77,228 — 77,228 Derivative liabilities 13,267 13,267 — 13,267 —

Leases

Leases	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	Leases Substantially all of the leases in which the Company is the lessee are comprised of real estate property for banking offices and office space with terms extending through 2025. We do not have any subleased properties. Substantially all of our leases are classified as operating leases, with the Company only holding one existing finance lease for a banking office location with a lease term through 2025. Supplemental balance sheet information related to leases was as follows: (in thousands) Classification March 31, 2021 December 31, 2020 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,364 $ 3,613 Finance lease right-of-use asset Premises and equipment, net 518 542 Total right-of-use assets $ 3,882 $ 4,155 Lease Liabilities Operating lease liability Other liabilities $ 4,316 $ 4,583 Finance lease liability Long-term debt 1,061 1,096 Total lease liabilities $ 5,377 $ 5,679 Weighted-average remaining lease term Operating leases 8.92 years 8.82 years Finance lease 5.42 years 5.67 years Weighted-average discount rate Operating leases 3.98 % 3.92 % Finance lease 8.89 % 8.89 % The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as common area maintenance and utilities. Three Months Ended March 31, (in thousands) 2021 2020 Lease Costs Operating lease cost $ 299 $ 319 Variable lease cost 72 39 Interest on lease liabilities (1) 23 26 Amortization of right-of-use assets 24 24 Net lease cost $ 418 $ 408 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 572 $ 503 Operating cash flows from finance lease 23 27 Finance cash flows from finance lease 35 31 (1) Included in long-term debt interest expense in the Company’s consolidated statements of income. All other lease costs in this table are included in occupancy expense of premises, net. Future minimum payments for finance leases and operating leases with initial or remaining terms of one year or more as of March 31, 2021 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2021 $ 177 $ 807 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 December 31, 2025 255 232 Thereafter 171 1,907 Total undiscounted lease payment $ 1,338 $ 5,573 Amounts representing interest (277) (1,257) Lease liability $ 1,061 $ 4,316
Leases	Leases Substantially all of the leases in which the Company is the lessee are comprised of real estate property for banking offices and office space with terms extending through 2025. We do not have any subleased properties. Substantially all of our leases are classified as operating leases, with the Company only holding one existing finance lease for a banking office location with a lease term through 2025. Supplemental balance sheet information related to leases was as follows: (in thousands) Classification March 31, 2021 December 31, 2020 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,364 $ 3,613 Finance lease right-of-use asset Premises and equipment, net 518 542 Total right-of-use assets $ 3,882 $ 4,155 Lease Liabilities Operating lease liability Other liabilities $ 4,316 $ 4,583 Finance lease liability Long-term debt 1,061 1,096 Total lease liabilities $ 5,377 $ 5,679 Weighted-average remaining lease term Operating leases 8.92 years 8.82 years Finance lease 5.42 years 5.67 years Weighted-average discount rate Operating leases 3.98 % 3.92 % Finance lease 8.89 % 8.89 % The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as common area maintenance and utilities. Three Months Ended March 31, (in thousands) 2021 2020 Lease Costs Operating lease cost $ 299 $ 319 Variable lease cost 72 39 Interest on lease liabilities (1) 23 26 Amortization of right-of-use assets 24 24 Net lease cost $ 418 $ 408 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 572 $ 503 Operating cash flows from finance lease 23 27 Finance cash flows from finance lease 35 31 (1) Included in long-term debt interest expense in the Company’s consolidated statements of income. All other lease costs in this table are included in occupancy expense of premises, net. Future minimum payments for finance leases and operating leases with initial or remaining terms of one year or more as of March 31, 2021 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2021 $ 177 $ 807 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 December 31, 2025 255 232 Thereafter 171 1,907 Total undiscounted lease payment $ 1,338 $ 5,573 Amounts representing interest (277) (1,257) Lease liability $ 1,061 $ 4,316

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events The Company has evaluated events that have occurred subsequent to March 31, 2021 and has concluded there are no other subsequent events that would require recognition in the accompanying consolidated financial statements. On April 29, 2021, the board of directors of the Company declared a cash dividend of $0.2250 per share payable on June 15, 2021 to shareholders of record as of the close of business on June 1, 2021. Pursuant to the Company’s share repurchase program approved on August 20, 2019, the Company has purchased 1,890 shares of common stock subsequent to March 31, 2021 and through May 4, 2021 for a total cost of $55.5 thousand inclusive of transaction costs, leaving $2.6 million remaining available under the program.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying interim condensed consolidated financial statements are prepared in accordance with GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934. Accordingly, certain disclosures accompanying annual consolidated financial statements are omitted. In the opinion of management, all significant intercompany accounts and transactions have been eliminated and adjustments, consisting solely of normal recurring accruals and considered necessary for the fair presentation of financial statements for the interim periods, have been included. The current period's results of operations are not necessarily indicative of the results that ultimately may be achieved for the year. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Form 10-K for the year ended December 31, 2020, filed with the SEC on March 11, 2021.
Risks and Uncertainties	Risks and Uncertainties The outbreak of COVID-19 has adversely impacted a broad range of industries in which the Company’s customers operate and could impair their ability to fulfill their financial obligations to the Company. The World Health Organization declared COVID-19 to be a global pandemic, indicating that almost all public commerce and related business activities must be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The spread of the outbreak has caused significant disruptions in the U.S. economy and has disrupted banking and other financial activity in the areas in which the Company operates. While there has been no material impact to the Company’s employees to date, COVID-19 could also potentially create widespread business continuity issues for the Company. Congress, the President, and the FRB have taken several actions designed to mitigate the economic impact of the pandemic. The CARES Act was signed into law in March 2020 as a $2 trillion legislative package. In addition to the general impact of COVID-19, certain provisions of the CARES Act as well as other recent legislative and regulatory relief efforts are expected to have a material impact on the Company’s operations. On December 27, 2020, a new COVID-19 relief bill was signed into law by President Trump, which includes as part of the bill up to $284.5 billion of a second wave of PPP funding. The American Rescue Plan Act of 2021 was signed into law on March 11, 2021 by President Biden as a $1.9 trillion legislative package, which includes as part of the bill a variety of economic assistance programs for Americans. In addition, on March 30, 2021, President Biden signed into law the PPP Extension Act of 2021, which provided an extension to May 31, 2021 for qualifying businesses to apply for a PPP loan and provided an additional 30 days for the SBA to process pending PPP loan applications. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. If the global response to contain COVID-19 escalates further or is unsuccessful, the Company could experience a material adverse effect on its business, financial condition, results of operations and cash flows. While it is not possible to know the full universe or extent that the impact of COVID-19, and related measures to curtail its spread or to provide economic assistance to entities and individuals or otherwise stimulate the economy, will have on the Company’s operations, the Company discloses in this report potentially material items of which it is aware at the time this report is filed with the SEC. Financial position and results of operations The Company’s interest income could be reduced due to COVID-19. In accordance with CARES Act provisions and regulatory guidance, the Company is actively working with COVID-19 affected borrowers to defer their payments, interest, and fees. While interest and fees will still accrue to income, through normal GAAP accounting, should eventual credit losses on these deferred payments emerge, interest income and fees accrued would need to be reversed. In such a scenario, interest income in future periods could be negatively impacted. At this time, the Company is unable to project the materiality of such an impact, but recognizes that the breadth of the economic impact of COVID-19 may affect its borrowers’ ability to repay in future periods. Capital and liquidity While the Company believes that it has sufficient capital to withstand an extended economic recession brought about by COVID-19, its reported and regulatory capital ratios could be adversely impacted by further credit losses. The Company relies on cash on hand as well as dividends from its subsidiary bank to service its debt. If the Company’s capital deteriorates such that its subsidiary bank is unable to pay dividends to it for an extended period of time, the Company may not be able to service its debt. If an extended recession causes large numbers of the Company’s deposit customers to withdraw their funds, the Company might become more reliant on volatile or more expensive sources of funding. Asset valuation Currently, the Company does not expect COVID-19 to affect its ability to account timely for the assets on its balance sheet; however, this could change in future periods. While certain valuation assumptions and judgments will change to account for pandemic-related circumstances such as widening credit spreads, the Company does not anticipate significant changes in methodology used to determine the fair value of assets measured in accordance with GAAP. It is possible that the lingering effects of COVID-19 could cause the occurrence of what management would deem to be subsequent triggering events that could, under certain circumstances, cause us to perform a goodwill or intangible asset impairment test and result in an impairment charge being recorded for that period. In the event that the Company concludes that all or a portion of its goodwill or intangible assets is impaired, a non-cash charge for the amount of such impairment would be recorded to earnings. Such a charge would have no impact on tangible capital or regulatory capital, cash flows or liquidity position. Credit The Company is working with customers directly affected by COVID-19. The Company has offered and continues to offer short-term assistance in accordance with regulatory guidelines. As a result of the current economic environment caused by the COVID-19 pandemic, the Company is engaging in more frequent communication with borrowers to better understand their situations and the challenges faced, allowing it to respond proactively as needs and issues arise. Should economic conditions worsen, the Company could experience further increases in its required ACL and record additional credit loss expense. It is possible that the Company’s asset quality measures could worsen in future periods if the effects of COVID-19 are prolonged.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect: (1) the reported amounts of assets and liabilities, (2) the disclosure of contingent assets and liabilities at the date of the financial statements, and (3) the reported amounts of revenues and expenses during the reporting period. These estimates are based on information available to management at the time the estimates are made. Actual results could differ from those estimates. The results for the three months ended March 31, 2021 may not be indicative of results for the year ending December 31, 2021, or for any other period.
Segment Reporting	Segment Reporting The Company’s activities are considered to be one reportable segment. The Company is engaged in the business of commercial and retail banking, and trust and investment services, with operations throughout Iowa, the Minneapolis/St. Paul metropolitan area of Minnesota, western Wisconsin, Naples and Fort Myers, Florida, and Denver, Colorado. Substantially all income is derived from a diverse base of commercial, mortgage and retail lending activities, and investments.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting StandardsAccounting Guidance Pending Adoption at March 31, 2021 On March 12, 2020, the FASB issued ASU 2020-04, Reference Rate Reform (ASC 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting
Derivatives	Derivatives Designated as Hedging Instruments The Company uses derivative instruments to hedge its exposure to economic risks, including interest rate, liquidity, and credit risk. Certain hedging relationships are formally designated and qualify for hedge accounting under GAAP as fair value or cash flow hedges. Fair Value Hedges - Derivatives are designated as fair value hedges to limit the Company's exposure to changes in the fair value of assets or liabilities due to movements in interest rates. The Company entered into pay-fixed receive-floating interest rate swaps to manage its exposure to changes in fair value in certain fixed-rate assets. The gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in interest income. Cash Flow Hedges - Derivatives are designated as cash flow hedges in order to minimize the variability in cash flows of earning assets or forecasted transactions caused by movement in interest rates. In February 2020, the Company entered into a pay-fixed receive-variable interest rate swap with a notional amount of $30.0 million to hedge against adverse fluctuations in interest rates by reducing exposure to variability in cash flows relating to interest payments on the Company's variable rate debt. The interest rate swap was designated as a cash flow hedge. The gain or loss on the derivative was recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. The Company terminated its cash flow hedge in the fourth quarter of 2020.
Fair Value Measurements	Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: • Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 – Significant other observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. For information regarding the valuation methodologies used to measure the Company's assets recorded at fair value (under ASC Topic 820), and for estimating fair value for financial instruments not recorded at fair value (under ASC Topic 825, as amended by ASU 2016-01 and ASU 2018-03), see Note 1. Nature of Business and Significant Accounting Policies and Note 20. Estimated Fair Value of Financial Instruments and Fair Value Measurements to the consolidated financial statements in the Company's 2020 Annual Report on Form 10-K, filed with the SEC on March 11, 2021. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily available for sale debt securities, derivatives and mortgage servicing rights. For assets measured at the lower of cost or fair value, the fair value measurement criteria may or may not be met during a reporting period and such measurements are therefore considered "nonrecurring" for purposes of disclosing the Company's fair value measurements. Fair value is used on a nonrecurring basis to adjust carrying values for collateral dependent individually analyzed loans and other real estate owned.

Debt Securities (Tables)

Debt Securities (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Securities [Abstract]
Schedule of Debt Securities, Available-for-sale	The amortized cost and fair value of investment debt securities AFS, with gross unrealized gains and losses, were as follows: As of March 31, 2021 (in thousands) Amortized Gross Gross Allowance for Credit Loss related to Debt Securities Fair Value U.S. Government agencies and corporations $ 335 $ 5 $ — $ — $ 340 State and political subdivisions 672,120 9,510 7,707 — 673,923 Mortgage-backed securities 78,512 1,237 744 — 79,005 Collateralized mortgage obligations 717,112 4,546 5,677 — 715,981 Corporate debt securities 423,348 7,995 3,698 — 427,645 Total debt securities $ 1,891,427 $ 23,293 $ 17,826 $ — $ 1,896,894 As of December 31, 2020 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Allowance for Credit Loss related to Debt Securities Fair Value U.S. Government agencies and corporations $ 355 $ 6 $ — $ — $ 361 State and political subdivisions 611,666 17,163 483 — 628,346 Mortgage-backed securities 92,261 1,758 1 — 94,018 Collateralized mortgage obligations 559,718 6,332 214 — 565,836 Corporate debt securities 360,103 9,333 616 — 368,820 Total debt securities $ 1,624,103 $ 34,592 $ 1,314 $ — $ 1,657,381
Schedule of Temporary Impairment Losses	The following table presents debt securities AFS in an unrealized loss position for which an allowance for credit losses has not been recorded at March 31, 2021, aggregated by investment category and length of time in a continuous loss position: As of March 31, 2021 Number of Securities Less than 12 Months 12 Months or More Total Available for Sale Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands, except number of securities) State and political subdivisions 145 $ 274,770 $ 7,413 $ 9,468 $ 294 $ 284,238 $ 7,707 Mortgage-backed securities 8 20,218 743 110 1 20,328 744 Collateralized mortgage obligations 22 392,272 5,677 — — 392,272 5,677 Corporate debt securities 28 143,592 3,543 750 155 144,342 3,698 Total 203 $ 830,852 $ 17,376 $ 10,328 $ 450 $ 841,180 $ 17,826 The following table presents debt securities AFS in an unrealized loss position for which an allowance for credit losses has not been recorded at December 31, 2020, aggregated by investment category and length of time in a continuous loss position: As of December 31, 2020 Available for Sale Number of Securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in thousands, except number of securities) State and political subdivisions 27 $ 31,489 $ 157 $ 4,065 $ 326 $ 35,554 $ 483 Mortgage-backed securities 7 315 1 — — 315 1 Collateralized mortgage obligations 8 133,032 214 — — 133,032 214 Corporate debt securities 15 35,995 523 3,311 93 39,306 616 Total 57 $ 200,831 $ 895 $ 7,376 $ 419 $ 208,207 $ 1,314
Schedule Proceeds and Realized Gains (Losses)	Proceeds and gross realized gains and losses on debt securities available for sale for the three months ended March 31, 2021 and 2020 were as follows: Three Months Ended (in thousands) March 31, 2021 March 31, 2020 Proceeds from sales of debt securities available for sale $ — $ 22,140 Gross realized gains from sales of debt securities available for sale — 155 Gross realized losses from sales of debt securities available for sale — (113) Net realized gain from sales of debt securities available for sale $ — $ 42
Investments Classified by Contractual Maturity Date	The contractual maturity distribution of investment debt securities at March 31, 2021, is shown below. Expected maturities of MBS and CMO may differ from contractual maturities because the mortgages underlying the securities may be called or prepaid without any penalties. Therefore, these securities are not included in the maturity categories in the following summary. Available For Sale (in thousands) Amortized Cost Fair Value Due in one year or less $ 35,751 $ 36,169 Due after one year through five years 304,392 310,792 Due after five years through ten years 418,530 416,063 Due after ten years 337,130 338,884 $ 1,095,803 $ 1,101,908 Mortgage-backed securities 78,512 79,005 Collateralized mortgage obligations 717,112 715,981 Total $ 1,891,427 $ 1,896,894

Loans Receivable and the Allo_2

Loans Receivable and the Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of Loans by Lending Classification	The composition of loans by class of receivable was as follows: As of (in thousands) March 31, 2021 December 31, 2020 Agricultural $ 117,099 $ 116,392 Commercial and industrial 993,770 1,055,488 Commercial real estate: Construction & development 164,927 181,291 Farmland 138,199 144,970 Multifamily 261,806 256,525 Commercial real estate-other 1,128,660 1,149,575 Total commercial real estate 1,693,592 1,732,361 Residential real estate: One- to four- family first liens 337,408 355,684 One- to four- family junior liens 137,025 143,422 Total residential real estate 474,433 499,106 Consumer 79,267 78,876 Loans held for investment, net of unearned income 3,358,161 3,482,223 Allowance for credit losses (50,650) (55,500) Total loans held for investment, net $ 3,307,511 $ 3,426,723
Schedule of Loans Based on Delinquency Status	The following table presents the amortized cost basis of loans based on delinquency status: Age Analysis of Past-Due Financial Assets 90 Days or More Past Due And Accruing (in thousands) Current 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total March 31, 2021 Agricultural $ 115,252 $ 513 $ 106 $ 1,228 $ 117,099 $ — Commercial and industrial 989,633 1,042 124 2,971 993,770 6 Commercial real estate: Construction and development 163,630 693 — 604 164,927 — Farmland 132,004 589 164 5,442 138,199 — Multifamily 259,564 2,242 — — 261,806 — Commercial real estate-other 1,112,419 785 — 15,456 1,128,660 — Total commercial real estate 1,667,617 4,309 164 21,502 1,693,592 — Residential real estate: One- to four- family first liens 334,061 2,337 141 869 337,408 468 One- to four- family junior liens 136,804 60 — 161 137,025 34 Total residential real estate 470,865 2,397 141 1,030 474,433 502 Consumer 79,134 94 6 33 79,267 — Total $ 3,322,501 $ 8,355 $ 541 $ 26,764 $ 3,358,161 $ 508 December 31, 2020 Agricultural $ 115,284 $ 8 $ 45 $ 1,055 $ 116,392 $ — Commercial and industrial 1,051,727 477 333 2,951 1,055,488 106 Commercial real estate: Construction and development 180,059 586 42 604 181,291 — Farmland 138,798 226 324 5,622 144,970 — Multifamily 256,525 — — — 256,525 — Commercial real estate-other 1,132,015 11,514 318 5,728 1,149,575 — Total commercial real estate 1,707,397 12,326 684 11,954 1,732,361 — Residential real estate: One- to four- family first liens 351,370 2,062 566 1,686 355,684 625 One- to four- family junior liens 142,663 377 234 148 143,422 — Total residential real estate 494,033 2,439 800 1,834 499,106 625 Consumer 78,747 43 39 47 78,876 8 Total $ 3,447,188 $ 15,293 $ 1,901 $ 17,841 $ 3,482,223 $ 739
Schedule of Amortized Cost Basis on Nonaccrual Status	The following table presents the amortized cost basis of loans on non-accrual status, and loans past due 90 days or more and still accruing by class of loan as of March 31, 2021 and December 31, 2020: Nonaccrual Nonaccrual with no Allowance for Credit Losses 90 Days or More Past Due And Accruing (in thousands) March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Agricultural $ 2,824 $ 2,584 $ 2,220 $ 1,599 $ — $ — Commercial and industrial 6,494 7,326 3,401 4,349 6 106 Commercial real estate: Construction and development 619 1,145 596 900 — — Farmland 10,458 8,319 8,834 7,266 — — Multifamily 1,096 746 37 39 — — Commercial real estate-other 19,695 19,134 2,933 2,497 — — Total commercial real estate 31,868 29,344 12,400 10,702 — — Residential real estate: One- to four- family first liens 1,863 1,895 353 75 468 625 One- to four- family junior liens 747 722 1 1 34 — Total residential real estate 2,610 2,617 354 76 502 625 Consumer 78 79 13 13 — 8 Total $ 43,874 $ 41,950 $ 18,388 $ 16,739 $ 508 $ 739
Schedule of Credit Quality Indicator	The following table sets forth the amortized cost basis of loans by class of receivable by credit quality indicator and vintage based on the most recent analysis performed, as of March 31, 2021. As of March 31, 2021, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans March 31, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Total Agricultural Pass $ 21,063 $ 13,560 $ 6,123 $ 2,169 $ 1,796 $ 2,501 $ 51,726 $ 98,938 Special mention / watch 1,485 3,259 1,066 75 94 1,326 4,680 11,985 Substandard 1,824 1,800 511 239 170 327 1,303 6,174 Doubtful — 1 — — — 1 — 2 Total $ 24,372 $ 18,620 $ 7,700 $ 2,483 $ 2,060 $ 4,155 $ 57,709 $ 117,099 Commercial and industrial Pass $ 137,814 $ 393,679 $ 91,939 $ 47,502 $ 59,720 $ 127,324 $ 108,875 $ 966,853 Special mention / watch 2,029 2,821 501 412 2,233 259 4,865 13,120 Substandard 1,092 3,440 1,378 861 464 3,688 2,869 13,792 Doubtful — — — — 1 3 1 5 Total $ 140,935 $ 399,940 $ 93,818 $ 48,775 $ 62,418 $ 131,274 $ 116,610 $ 993,770 CRE - Construction and development Pass $ 13,493 $ 84,966 $ 23,974 $ 10,652 $ 1,994 $ 1,344 $ 25,120 $ 161,543 Special mention / watch — 835 294 537 — 8 — 1,674 Substandard — 589 1,097 — — 24 — 1,710 Doubtful — — — — — — — — Total $ 13,493 $ 86,390 $ 25,365 $ 11,189 $ 1,994 $ 1,376 $ 25,120 $ 164,927 CRE - Farmland Pass $ 11,922 $ 45,736 $ 21,226 $ 6,170 $ 7,527 $ 16,130 $ 1,499 $ 110,210 Special mention / watch 2,113 5,349 4,582 1,039 656 236 148 14,123 Substandard 92 3,510 2,451 3,695 1,727 2,364 27 13,866 Doubtful — — — — — — — — Total $ 14,127 $ 54,595 $ 28,259 $ 10,904 $ 9,910 $ 18,730 $ 1,674 $ 138,199 CRE - Multifamily Pass $ 41,991 $ 151,623 $ 18,241 $ 3,888 $ 8,644 $ 23,693 $ 10,886 $ 258,966 Special mention / watch — 344 — — — 51 — 395 Substandard — 1,096 — — — 1,349 — 2,445 Doubtful — — — — — — — — Total $ 41,991 $ 153,063 $ 18,241 $ 3,888 $ 8,644 $ 25,093 $ 10,886 $ 261,806 CRE - other Pass $ 83,195 $ 486,080 $ 120,039 $ 46,016 $ 74,286 $ 115,050 $ 41,042 $ 965,708 Special mention / watch 5,116 53,445 6,732 12,761 5,883 4,536 282 88,755 Substandard 2,173 44,265 12,752 6,231 1,214 7,453 109 74,197 Doubtful — — — — — — — — Total $ 90,484 $ 583,790 $ 139,523 $ 65,008 $ 81,383 $ 127,039 $ 41,433 $ 1,128,660 RRE - One- to four- family first liens Performing $ 28,149 $ 100,073 $ 39,401 $ 37,074 $ 27,824 $ 95,272 $ 7,284 $ 335,077 Nonperforming 499 218 1 337 226 1,050 — 2,331 Total $ 28,648 $ 100,291 $ 39,402 $ 37,411 $ 28,050 $ 96,322 $ 7,284 $ 337,408 RRE - One- to four- family junior liens Performing $ 11,828 $ 17,822 $ 6,613 $ 10,069 $ 5,641 $ 7,683 $ 76,588 $ 136,244 Nonperforming — 32 143 209 16 230 151 781 Total $ 11,828 $ 17,854 $ 6,756 $ 10,278 $ 5,657 $ 7,913 $ 76,739 $ 137,025 Consumer Performing $ 12,390 $ 26,540 $ 11,168 $ 9,026 $ 4,108 $ 5,707 $ 10,250 $ 79,189 Nonperforming — 6 19 11 8 34 — 78 Total $ 12,390 $ 26,546 $ 11,187 $ 9,037 $ 4,116 $ 5,741 $ 10,250 $ 79,267 Term Loans by Origination Year Revolving Loans 2021 2020 2019 2018 2017 Prior Total Total by Credit Quality Indicator Category Pass $ 309,478 $ 1,175,644 $ 281,542 $ 116,397 $ 153,967 $ 286,042 $ 239,148 $ 2,562,218 Special mention / watch 10,743 66,053 13,175 14,824 8,866 6,416 9,975 130,052 Substandard 5,181 54,700 18,189 11,026 3,575 15,205 4,308 112,184 Doubtful — 1 — — 1 4 1 7 Performing 52,367 144,435 57,182 56,169 37,573 108,662 94,122 550,510 Nonperforming 499 256 163 557 250 1,314 151 3,190 Total $ 378,268 $ 1,441,089 $ 370,251 $ 198,973 $ 204,232 $ 417,643 $ 347,705 $ 3,358,161 The following table sets forth the amortized cost basis of loans by class of receivable by credit quality indicator and vintage based on the most recent analysis performed, as of December 31, 2020. As of December 31, 2020, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Total Agricultural Pass $ 17,836 $ 6,959 $ 2,764 $ 2,145 $ 1,386 $ 1,833 $ 60,802 $ 93,725 Special mention / watch 4,892 1,083 117 108 553 1,103 7,210 15,066 Substandard 4,075 650 258 183 121 226 2,086 7,599 Doubtful 1 — — — — 1 — 2 Total $ 26,804 $ 8,692 $ 3,139 $ 2,436 $ 2,060 $ 3,163 $ 70,098 $ 116,392 Commercial and industrial Pass $ 546,171 $ 105,523 $ 57,055 $ 61,753 $ 38,695 $ 92,526 $ 120,498 $ 1,022,221 Special mention / watch 3,410 572 497 2,261 611 112 4,796 12,259 Substandard 5,014 1,539 928 656 461 3,261 9,144 21,003 Doubtful — — — 1 — 3 1 5 Total $ 554,595 $ 107,634 $ 58,480 $ 64,671 $ 39,767 $ 95,902 $ 134,439 $ 1,055,488 CRE - Construction and development Pass $ 109,885 $ 25,972 $ 14,994 $ 2,696 $ 679 $ 876 $ 22,519 $ 177,621 Special mention / watch 843 298 542 — 9 3 — 1,695 Substandard 597 1,132 220 — — 26 — 1,975 Doubtful — — — — — — — — Total $ 111,325 $ 27,402 $ 15,756 $ 2,696 $ 688 $ 905 $ 22,519 $ 181,291 CRE - Farmland Pass $ 48,378 $ 25,022 $ 9,577 $ 10,490 $ 8,378 $ 13,003 $ 1,263 $ 116,111 Special mention / watch 8,088 4,583 935 660 361 237 — 14,864 Substandard 3,924 2,627 4,386 1,728 166 1,128 36 13,995 Doubtful — — — — — — — — Total $ 60,390 $ 32,232 $ 14,898 $ 12,878 $ 8,905 $ 14,368 $ 1,299 $ 144,970 CRE - Multifamily Pass $ 164,817 $ 18,992 $ 17,805 $ 10,706 $ 10,201 $ 19,581 $ 11,558 $ 253,660 Special mention / watch 345 — — — 59 — — 404 Substandard 1,099 — — — 1,362 — — 2,461 Doubtful — — — — — — — — Total $ 166,261 $ 18,992 $ 17,805 $ 10,706 $ 11,622 $ 19,581 $ 11,558 $ 256,525 CRE - other Pass $ 487,771 $ 129,388 $ 60,957 $ 83,393 $ 66,369 $ 91,698 $ 45,129 $ 964,705 Special mention / watch 71,141 14,870 12,415 5,953 3,756 4,335 455 112,925 Substandard 48,690 7,162 6,370 1,222 579 6,997 925 71,945 Doubtful — — — — — — — — Total $ 607,602 $ 151,420 $ 79,742 $ 90,568 $ 70,704 $ 103,030 $ 46,509 $ 1,149,575 RRE - One- to four- family first liens Performing $ 117,923 $ 46,581 $ 42,875 $ 30,628 $ 37,407 $ 68,501 $ 9,249 $ 353,164 Nonperforming 239 1 596 303 148 1,233 — 2,520 Total $ 118,162 $ 46,582 $ 43,471 $ 30,931 $ 37,555 $ 69,734 $ 9,249 $ 355,684 RRE - One- to four- family junior liens Performing $ 19,818 $ 7,973 $ 12,140 $ 6,152 $ 3,467 $ 5,354 $ 87,795 $ 142,699 Nonperforming 7 — 223 17 116 190 170 723 Total $ 19,825 $ 7,973 $ 12,363 $ 6,169 $ 3,583 $ 5,544 $ 87,965 $ 143,422 Consumer Performing $ 30,755 $ 13,662 $ 10,341 $ 4,960 $ 2,656 $ 6,306 $ 10,118 $ 78,798 Nonperforming 2 21 13 5 13 24 — 78 Total $ 30,757 $ 13,683 $ 10,354 $ 4,965 $ 2,669 $ 6,330 $ 10,118 $ 78,876 Term Loans by Origination Year Revolving Loans 2020 2019 2018 2017 2016 Prior Total Total by Credit Quality Indicator Category Pass $ 1,374,858 $ 311,856 $ 163,152 $ 171,183 $ 125,708 $ 219,517 $ 261,769 $ 2,628,043 Special mention / watch 88,719 21,406 14,506 8,982 5,349 5,790 12,461 157,213 Substandard 63,399 13,110 12,162 3,789 2,689 11,638 12,191 118,978 Doubtful 1 — — 1 — 4 1 7 Performing 168,496 68,216 65,356 41,740 43,530 80,161 107,162 574,661 Nonperforming 248 22 832 325 277 1,447 170 3,321 Total $ 1,695,721 $ 414,610 $ 256,008 $ 226,020 $ 177,553 $ 318,557 $ 393,754 $ 3,482,223
Schedule of Changes in Allowance for Credit Losses	The changes in the allowance for credit losses by portfolio segment were as follows: For the Three Months Ended March 31, 2021 and 2020 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Three Months Ended March 31, 2021 Beginning balance $ 1,346 $ 15,689 $ 32,640 $ 4,882 $ 943 $ 55,500 Charge-offs (41) (666) (66) (35) (195) (1,003) Recoveries 27 292 306 9 53 687 Credit loss (benefit) expense (1) (222) (1,671) (2,455) (201) 15 (4,534) Ending balance $ 1,110 $ 13,644 $ 30,425 $ 4,655 $ 816 $ 50,650 For the Three Months Ended March 31, 2020 Beginning balance $ 3,748 $ 8,394 $ 13,804 $ 2,685 $ 448 $ 29,079 Day 1 transition adjustment from adoption of ASC 326 (2,557) 2,728 1,300 2,050 463 3,984 Charge-offs (84) (471) (720) — (222) (1,497) Recoveries 25 213 8 7 46 299 Credit loss expense (1) 14 8,445 8,746 1,683 434 19,322 Ending balance $ 1,146 $ 19,309 $ 23,138 $ 6,425 $ 1,169 $ 51,187 (1) The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss (benefit) expense of $(0.2) million and $2.4 million related to off-balance sheet credit exposures for the three months ended March 31, 2021 and March 31, 2020, respectively. The composition of allowance for credit losses by portfolio segment based on evaluation method were as follows: As of March 31, 2021 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total Loans held for investment, net of unearned income Individually evaluated for impairment $ 2,463 $ 5,591 $ 30,949 $ 692 $ 8 $ 39,703 Collectively evaluated for impairment 114,636 988,179 1,662,643 473,741 79,259 3,318,458 Total $ 117,099 $ 993,770 $ 1,693,592 $ 474,433 $ 79,267 $ 3,358,161 Allowance for credit losses: Individually evaluated for impairment $ 39 $ 773 $ 2,486 $ 170 $ — $ 3,468 Collectively evaluated for impairment 1,071 12,871 27,939 4,485 816 47,182 Total $ 1,110 $ 13,644 $ 30,425 $ 4,655 $ 816 $ 50,650 As of December 31, 2020 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total Loans held for investment, net of unearned income Individually evaluated for impairment $ 2,088 $ 6,582 $ 28,235 $ 427 $ 8 $ 37,340 Collectively evaluated for impairment 114,304 1,048,906 1,704,126 498,679 78,868 3,444,883 Total $ 116,392 $ 1,055,488 $ 1,732,361 $ 499,106 $ 78,876 $ 3,482,223 Allowance for credit losses: Individually evaluated for impairment $ 66 $ 799 $ 2,031 $ 179 $ — $ 3,075 Collectively evaluated for impairment 1,280 14,890 30,609 4,703 943 52,425 Total $ 1,346 $ 15,689 $ 32,640 $ 4,882 $ 943 $ 55,500
Financing Receivable, Collateral Depend Loans	The following table presents the amortized cost basis of collateral dependent loans, by the primary collateral type, which are individually evaluated to determine expected credit losses, and the related ACL allocated to these loans: As of March 31, 2021 (in thousands) Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 963 $ 758 $ 742 $ 2,463 $ 39 Commercial and industrial 629 2,366 2,596 5,591 773 Commercial real estate: Construction and development 595 — — 595 — Farmland 10,132 — — 10,132 123 Multifamily 1,096 — — 1,096 452 Commercial real estate-other 19,126 — — 19,126 1,911 Residential real estate: One- to four- family first liens 483 — — 483 132 One- to four- family junior liens 209 — — 209 38 Consumer — 8 — 8 — Total $ 33,233 $ 3,132 $ 3,338 $ 39,703 $ 3,468 As of December 31, 2020 (in thousands) Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 516 $ 824 $ 748 $ 2,088 $ 66 Commercial and industrial 667 3,037 2,878 6,582 799 Commercial real estate: Construction and development 899 — — 899 — Farmland 7,850 — — 7,850 88 Multifamily 746 — — 746 202 Commercial real estate-other 18,740 — — 18,740 1,741 Residential real estate: One- to four- family first liens 204 — — 204 132 One- to four- family junior liens 223 — — 223 47 Consumer — 8 — 8 — Total $ 29,845 $ 3,869 $ 3,626 $ 37,340 $ 3,075
Schedule of TDRs by Class of Financing Receivable	The following table sets forth information on the Company's TDRs by class of financing receivable occurring during the stated periods. TDRs include multiple concessions, and the disclosure classifications in the table are based on the primary concession provided to the borrower. Three Months Ended March 31, 2021 2020 Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Contracts Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (dollars in thousands) CONCESSION - Extended maturity date Commercial and industrial — $ — $ — 1 $ 242 $ 242 Commercial real estate-other — — — 2 485 485 One- to four- family first liens 1 93 93 — — — CONCESSION - Other Commercial real estate-other 1 44 44 — — — One- to four- family first liens 1 150 150 — — — Total 3 $ 287 $ 287 3 $ 727 $ 727

Derivatives, Hedging Activiti_2

Derivatives, Hedging Activities and Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table presents the total notional amounts and gross fair values of the Company’s derivatives as of the dates indicated. The derivative asset and liability balances are presented on a gross basis, prior to the application of master netting agreements, as included in other assets and other liabilities, respectively, on the consolidated balance sheets. The fair values of the Company's derivative instrument assets and liabilities are summarized as follows: As of March 31, 2021 As of December 31, 2020 Notional Amount Fair Value Notional Amount Fair Value (in thousands) Assets Liabilities Assets Liabilities Designated as hedging instruments Fair value hedges Interest rate swaps $ 25,373 $ 547 $ 1,329 $ 25,559 $ 34 $ 2,452 Total $ 25,373 $ 547 $ 1,329 $ 25,559 $ 34 $ 2,452 Not designated as hedging instruments: Interest rate swaps $ 346,944 $ 6,346 $ 6,361 $ 347,380 $ 10,758 $ 10,807 RPAs - protection sold 4,412 1 — 4,471 4 — RPAs - protection purchased 9,778 — 4 9,825 — 8 Total $ 361,134 $ 6,347 $ 6,365 $ 361,676 $ 10,762 $ 10,815
Schedule of Derivatives Instrument Impacts on Statements	The table below presents the effect of cash flow hedge accounting on AOCI for three months ended March 31, 2021 and 2020. Amount of Gain (Loss) Recognized in AOCI on Derivative Location of Gain (Loss) Reclassified from AOCI into Income Amount of Gain (Loss) Reclassified from AOCI into Income Three Months Ended March 31, Three Months Ended March 31, (in thousands) 2021 2020 2021 2020 Interest rate swaps $ — $ (888) Interest Expense $ — $ 5 The table below presents the effect of the Company’s derivative financial instruments designated as hedging instruments on the consolidated statements of income for the periods indicated: Location and Amount of Gain or Loss Recognized in Income on Fair Value and Cash Flow Hedging Relationships For the Three Months Ended March 31, 2021 2020 (in thousands) Interest Income Other Income Interest Income Other Income Total amounts of income and expense line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded $ (108) $ — $ (47) $ — The effects of fair value and cash flow hedging: Gain (loss) on fair value hedging relationships in subtopic 815-20: Interest contracts: Hedged items (1,633) — 1,750 — Derivative designated as hedging instruments 1,123 — (1,761) — Income statement effect of cash flow hedging relationships in subtopic 815-20: Interest contracts: Amount reclassified from AOCI into income — — 5 —
Hedged Items In Fair Value Hedging Relationship	As of March 31, 2021, the following amounts were recorded on the balance sheet related to cumulative basis adjustment for fair value hedges: Line Item in the Balance Sheet in Which the Hedged Item is Included Carrying Amount of the Hedged Assets Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset (in thousands) Loans $ 26,173 $ 786
Derivatives Not Designated as Hedging Instruments	The following table presents the net gains (losses) recognized on the consolidated statements of income related to the derivatives not designated as hedging instruments for the periods indicated: Location in the Consolidated Statements of Income For the Three Months Ended March 31, (in thousands) 2021 2020 Interest rate swaps Other income $ (34) $ 141 RPAs Other income — 103 Total $ (34) $ 244
Offsetting Derivative Assets And Liabilities	The table below presents gross derivatives and the respective collateral received or pledged in the form of other financial instruments as of March 31, 2021 and December 31, 2020, which are generally marketable securities and/or cash. The collateral amounts in the table below are limited to the outstanding balances of the related asset or liability (after netting is applied); thus instances of over-collateralization are not shown. Further, the net amounts of derivative assets or liabilities can be reconciled to the tabular disclosure of fair value. The tabular disclosure of fair value provides the location that derivative assets and liabilities are presented on the consolidated balance sheets. Gross Amounts Not Offset in the Balance Sheet (in thousands) Gross Amounts of Recognized Assets (Liabilities) Gross Amounts Offset in the Balance Sheet Net Amounts of Assets (Liabilities) presented in the Balance Sheet Financial Instruments Cash Collateral Received (Paid) Net Assets (Liabilities) As of March 31, 2021 Asset Derivatives $ 6,894 $ — $ 6,894 $ — $ — $ 6,894 Liability Derivatives (7,694) — (7,694) — (2,140) (5,554) As of December 31, 2020 Asset Derivatives $ 10,796 $ — $ 10,796 $ — $ — $ 10,796 Liability Derivatives (13,267) — (13,267) — (13,267) —

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table presents the gross carrying amount, accumulated amortization, and net carrying amount of other intangible assets at the dates indicated: As of March 31, 2021 As of December 31, 2020 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (27,628) $ 14,117 $ 41,745 $ (26,440) $ 15,305 Customer relationship intangible 5,265 (2,920) 2,345 5,265 (2,630) 2,635 Other 2,700 (2,467) 233 2,700 (2,438) 262 $ 49,710 $ (33,015) $ 16,695 $ 49,710 $ (31,508) $ 18,202 Indefinite-lived trade name intangible $ 7,040 $ 7,040
Schedule of Indefinite-Lived Intangible Assets	The following table presents the gross carrying amount, accumulated amortization, and net carrying amount of other intangible assets at the dates indicated: As of March 31, 2021 As of December 31, 2020 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (27,628) $ 14,117 $ 41,745 $ (26,440) $ 15,305 Customer relationship intangible 5,265 (2,920) 2,345 5,265 (2,630) 2,635 Other 2,700 (2,467) 233 2,700 (2,438) 262 $ 49,710 $ (33,015) $ 16,695 $ 49,710 $ (31,508) $ 18,202 Indefinite-lived trade name intangible $ 7,040 $ 7,040
Schedule of Future Amortization Expense	The following table provides the estimated future amortization expense for the remaining nine months ending December 31, 2021 and the succeeding annual periods: (in thousands) Core Deposit Intangible Customer Relationship Intangible Other Total Estimated Remaining Amortization Expense for the Year Ending December 31, 2021 $ 3,002 $ 772 $ 77 $ 3,851 2022 3,487 797 79 4,363 2023 2,833 518 51 3,402 2024 2,180 239 24 2,443 2025 1,526 19 2 1,547 Thereafter 1,089 — — 1,089 Total $ 14,117 $ 2,345 $ 233 $ 16,695

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Other Assets [Abstract]
Schedule of Other Assets	The components of the Company's other assets as of March 31, 2021 and December 31, 2020 were as follows: (in thousands) March 31, 2021 December 31, 2020 Bank-owned life insurance $ 84,024 $ 83,483 Interest receivable 19,749 21,706 FHLB stock 12,170 13,784 Mortgage servicing rights 5,928 5,137 Operating lease right-of-use assets, net 3,364 3,613 Federal and state income taxes, deferred 10,294 3,845 Derivative assets 6,894 10,796 Other receivables/assets 13,102 11,129 $ 155,525 $ 153,493

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2021
Deposits [Abstract]
Deposit Liabilities	The following table presents the composition of our deposits as of the dates indicated: (in thousands) March 31, 2021 December 31, 2020 Noninterest bearing deposits $ 958,526 $ 910,655 Interest checking deposits 1,406,070 1,351,641 Money market deposits 950,300 918,654 Savings deposits 580,862 529,751 Time deposits under $250 558,338 581,471 Time deposits of $250 or more 340,467 254,877 Total deposits $ 4,794,563 $ 4,547,049

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	3 Months Ended
	Mar. 31, 2021
Short-term Debt [Abstract]
Schedule of Short-term borrowings	The following table summarizes our short-term borrowings as of the dates indicated: March 31, 2021 December 31, 2020 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Securities sold under agreements to repurchase 0.25 % $ 175,785 0.28 % $ 174,289 Federal Home Loan Bank advances — — 0.29 56,500 Total 0.25 % $ 175,785 0.28 % $ 230,789

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of long-term debt	The table below summarizes the terms of each issuance of junior subordinated notes outstanding as of the dates indicated: (in thousands) Face Value Book Value Interest Rate Rate Maturity Date Callable Date March 31, 2021 ATBancorp Statutory Trust I $ 7,732 $ 6,859 Three-month LIBOR + 1.68% 1.86 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,864 Three-month LIBOR + 1.65% 1.83 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,775 Three-month LIBOR + 2.15% 2.35 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,845 Three-month LIBOR + 3.50% 3.68 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.77 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,807 December 31, 2020 ATBancorp Statutory Trust I $ 7,732 $ 6,850 Three-month LIBOR + 1.68% 1.90 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,850 Three-month LIBOR + 1.65% 1.87 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,767 Three-month LIBOR + 2.15% 2.39 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,832 Three-month LIBOR + 3.50% 3.72 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.81 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,763 Long-term borrowings were as follows as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Finance lease payable 8.89 % $ 1,061 8.89 % $ 1,096 FHLB borrowings 1.90 84,174 1.92 91,198 Total 1.99 % $ 85,235 2.00 % $ 92,294
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank	As of March 31, 2021, FHLB borrowings were as follows: (in thousands) Weighted Average Rate Amount Due in 2021 0.76 % $ 36,000 Due in 2022 2.68 % 31,000 Due in 2023 2.79 % 11,000 Due in 2024 3.15 % 6,000 Total 84,000 Valuation adjustment from acquisition accounting 174 Total $ 84,174

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended March 31, (dollars in thousands, except per share amounts) 2021 2020 Basic Earnings (Loss) Per Share: Net income (loss) $ 21,648 $ (1,975) Weighted average shares outstanding 15,990,724 16,141,500 Basic earnings (loss) per common share $ 1.35 $ (0.12) Diluted Earnings (Loss) Per Share: Net income (loss) $ 21,648 $ (1,975) Weighted average shares outstanding, including all dilutive potential shares 16,020,920 16,141,500 Diluted earnings (loss) per common share $ 1.35 $ (0.12)
Schedule of Antidilutive Effect in the Calculation of Diluted Earnings Per Common Share	The weighted average shares that have an antidilutive effect in the calculation of diluted earnings per common share and have been excluded from the computation above were as follows: Three Months Ended March 31, 2021 2020 Dilutive shares (1) — 18,042 (1) Dilutive potential shares that were excluded from the computation of diluted earnings per common share for the three months ended March 31, 2020 as a result of the reported net loss available to common shareholders.

Regulatory Capital Requiremen_2

Regulatory Capital Requirements and Restrictions on Subsidiary Cash (Tables)	3 Months Ended
	Mar. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	A comparison of the Company's and the Bank's capital with the corresponding minimum regulatory requirements in effect as of March 31, 2021 and December 31, 2020, is presented below: Actual For Capital Adequacy Purposes With Capital Conservation Buffer(1) To Be Well Capitalized Under Prompt Corrective Action Provisions (dollars in thousands) Amount Ratio Amount Ratio Amount Ratio At March 31, 2021 Consolidated: Total capital/risk weighted assets $589,205 13.75% $450,010 10.50% N/A N/A Tier 1 capital/risk weighted assets 477,086 11.13 364,294 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 435,279 10.16 300,006 7.00 N/A N/A Tier 1 leverage capital/average assets 477,086 8.78 217,315 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $563,501 13.19% $448,555 10.50% $427,195 10.00% Tier 1 capital/risk weighted assets 520,716 12.19 363,116 8.50 341,756 8.00 Common equity tier 1 capital/risk weighted assets 520,716 12.19 299,037 7.00 277,677 6.50 Tier 1 leverage capital/average assets 520,716 9.60 216,913 4.00 271,142 5.00 At December 31, 2020 Consolidated: Total capital/risk weighted assets $572,437 13.41% $448,068 10.50% N/A N/A Tier 1 capital/risk weighted assets 456,526 10.70 362,722 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 414,763 9.72 298,712 7.00 N/A N/A Tier 1 leverage capital/average assets 456,526 8.50 214,795 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $547,558 12.89% $446,113 10.50% $424,870 10.00% Tier 1 capital/risk weighted assets 500,981 11.79 361,139 8.50 339,896 8.00 Common equity tier 1 capital/risk weighted assets 500,981 11.79 297,409 7.00 276,165 6.50 Tier 1 leverage capital/average assets 500,981 9.35 214,251 4.00 271,992 5.00

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments	The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The following table summarizes the Bank's commitments as of the dates indicated: March 31, 2021 December 31, 2020 (in thousands) Commitments to extend credit $ 920,493 $ 897,274 Commitments to sell loans 58,333 59,956 Standby letters of credit 21,417 34,212 Total $ 1,000,243 $ 991,442

Fair Value of Financial Instr_2

Fair Value of Financial Instruments and Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value Measured on Recurring Basis	The following table summarizes assets and liabilities measured at fair value on a recurring basis as of the dates indicated, by level within the fair value hierarchy: Fair Value Measurement at March 31, 2021 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Available for sale debt securities: U.S. Government agencies and corporations $ 340 $ — $ 340 $ — State and political subdivisions 673,923 — 673,923 — Mortgage-backed securities 79,005 — 79,005 — Collateralized mortgage obligations 715,981 — 715,981 — Corporate debt securities 427,645 — 427,645 — Derivative assets 6,894 — 6,894 — Mortgage servicing rights 5,928 — 5,928 — Liabilities: Derivative liabilities $ 7,694 $ — $ 7,694 $ — Fair Value Measurement at December 31, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Debt securities available for sale: U.S. Government agencies and corporations $ 361 $ — $ 361 $ — State and political subdivisions 628,346 — 628,346 — Mortgage-backed securities 94,018 — 94,018 — Collateralized mortgage obligations 565,836 — 565,836 — Corporate debt securities 368,820 — 368,820 — Derivative assets 10,796 — 10,796 — Mortgage servicing rights 5,137 — 5,137 — Liabilities: Derivative liabilities $ 13,267 $ — $ 13,267 $ —
Schedule of Fair Value Measured on Nonrecurring Basis	The following tables presents assets measured at fair value on a nonrecurring basis as of the dates indicated: Fair Value Measurement at March 31, 2021 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 36,235 $ — $ — $ 36,235 Foreclosed assets, net 1,487 — — 1,487 Fair Value Measurement at December 31, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 34,265 $ — $ — $ 34,265 Foreclosed assets, net 2,316 — — 2,316
Schedule of Valuation Techniques	The following table presents the valuation technique(s), unobservable inputs, and quantitative information about the unobservable inputs used for fair value measurements of the financial instruments held by the Company and categorized within Level 3 of the fair value hierarchy as of the dates indicated: Fair Value at (dollars in thousands) March 31, 2021 December 31, 2020 Valuation Techniques(s) Unobservable Input Range of Inputs Weighted Average Collateral dependent individually analyzed loans $ 36,235 $ 34,265 Fair value of collateral Valuation adjustments — % - 91 % 22 % Foreclosed assets, net $ 1,487 $ 2,316 Fair value of collateral Valuation adjustments 8 % - 66 % 32 %
Fair Value, by Balance Sheet Grouping	The carrying amount and estimated fair value of financial instruments at March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 (in thousands) Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 145,769 $ 145,769 $ 145,769 $ — $ — Debt securities available for sale 1,896,894 1,896,894 — 1,896,894 — Loans held for sale 58,333 58,608 — 58,608 — Loans held for investment, net 3,307,511 3,341,347 — — 3,341,347 Interest receivable 19,749 19,749 — 19,749 — FHLB stock 12,170 12,170 — 12,170 — Derivative assets 6,894 6,894 — 6,894 — Financial liabilities: Noninterest bearing deposits 958,526 958,526 958,526 — — Interest bearing deposits 3,836,037 3,838,265 2,937,232 901,033 — Short-term borrowings 175,785 175,785 175,785 — — Finance leases payable 1,061 1,061 — 1,061 — FHLB borrowings 84,174 85,986 — 85,986 — Junior subordinated notes issued to capital trusts 41,807 34,066 — 34,066 — Subordinated debentures 74,654 78,388 — 78,388 — Derivative liabilities 7,694 7,694 — 7,694 — December 31, 2020 (in thousands) Carrying Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 82,659 $ 82,659 $ 82,659 $ — $ — Debt securities available for sale 1,657,381 1,657,381 — 1,657,381 — Loans held for sale 59,956 60,039 — 60,039 — Loans held for investment, net 3,426,723 3,469,515 — — 3,469,515 Interest receivable 21,706 21,706 — 21,706 — FHLB stock 13,784 13,784 — 13,784 — Derivative assets 10,796 10,796 — 10,796 — Financial liabilities: Noninterest bearing deposits 910,655 910,655 910,655 — — Interest bearing deposits 3,636,394 3,640,365 2,800,046 840,319 Short-term borrowings 230,789 230,789 230,789 — — Finance leases payable 1,096 1,096 — 1,096 — FHLB borrowings 91,198 93,380 — 93,380 Junior subordinated notes issued to capital trusts 41,763 33,986 — 33,986 Subordinated debentures 74,634 77,228 — 77,228 Derivative liabilities 13,267 13,267 — 13,267 —

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Schedule of Lease Assets and Liabilities	Supplemental balance sheet information related to leases was as follows: (in thousands) Classification March 31, 2021 December 31, 2020 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,364 $ 3,613 Finance lease right-of-use asset Premises and equipment, net 518 542 Total right-of-use assets $ 3,882 $ 4,155 Lease Liabilities Operating lease liability Other liabilities $ 4,316 $ 4,583 Finance lease liability Long-term debt 1,061 1,096 Total lease liabilities $ 5,377 $ 5,679 Weighted-average remaining lease term Operating leases 8.92 years 8.82 years Finance lease 5.42 years 5.67 years Weighted-average discount rate Operating leases 3.98 % 3.92 % Finance lease 8.89 % 8.89 %
Lease Costs and Other Information	The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as common area maintenance and utilities. Three Months Ended March 31, (in thousands) 2021 2020 Lease Costs Operating lease cost $ 299 $ 319 Variable lease cost 72 39 Interest on lease liabilities (1) 23 26 Amortization of right-of-use assets 24 24 Net lease cost $ 418 $ 408 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 572 $ 503 Operating cash flows from finance lease 23 27 Finance cash flows from finance lease 35 31 (1) Included in long-term debt interest expense in the Company’s consolidated statements of income. All other lease costs in this table are included in occupancy expense of premises, net.
Schedule of Finance Lease Liability Maturity	Future minimum payments for finance leases and operating leases with initial or remaining terms of one year or more as of March 31, 2021 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2021 $ 177 $ 807 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 December 31, 2025 255 232 Thereafter 171 1,907 Total undiscounted lease payment $ 1,338 $ 5,573 Amounts representing interest (277) (1,257) Lease liability $ 1,061 $ 4,316
Schedule of Operating Lease Liability Maturity	Future minimum payments for finance leases and operating leases with initial or remaining terms of one year or more as of March 31, 2021 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2021 $ 177 $ 807 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 December 31, 2025 255 232 Thereafter 171 1,907 Total undiscounted lease payment $ 1,338 $ 5,573 Amounts representing interest (277) (1,257) Lease liability $ 1,061 $ 4,316

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2021segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	1

Debt Securities - Schedule of A

Debt Securities - Schedule of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities
Amortized Cost	$ 1,891,427	$ 1,624,103
Gross Unrealized Gains	23,293	34,592
Gross Unrealized Losses	17,826	1,314
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	1,896,894	1,657,381
U.S. Government agencies and corporations
Schedule of Available-for-sale Securities
Amortized Cost	335	355
Gross Unrealized Gains	5	6
Gross Unrealized Losses	0	0
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	340	361
State and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost	672,120	611,666
Gross Unrealized Gains	9,510	17,163
Gross Unrealized Losses	7,707	483
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	673,923	628,346
Mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	78,512	92,261
Gross Unrealized Gains	1,237	1,758
Gross Unrealized Losses	744	1
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	79,005	94,018
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Amortized Cost	717,112	559,718
Gross Unrealized Gains	4,546	6,332
Gross Unrealized Losses	5,677	214
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	715,981	565,836
Corporate debt securities
Schedule of Available-for-sale Securities
Amortized Cost	423,348	360,103
Gross Unrealized Gains	7,995	9,333
Gross Unrealized Losses	3,698	616
Allowance for Credit Loss related to Debt Securities	0	0
Debt securities available for sale	$ 427,645	$ 368,820

Debt Securities - Additional In

Debt Securities - Additional Information (Details) $ in Thousands	Mar. 31, 2021USD ($)security	Dec. 31, 2020USD ($)security
Schedule of Available-for-sale Securities
Pledged securities	$ 516,100	$ 434,700
Securities in continuous unrealized loss position | security	203	57
Accumulated unrealized losses	$ 17,826	$ 1,314
Interest receivable	$ 19,749	$ 21,706
State and political subdivisions
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	145	27
Accumulated unrealized losses	$ 7,707	$ 483
Mortgage-backed securities
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	8	7
Accumulated unrealized losses	$ 744	$ 1
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	22	8
Accumulated unrealized losses	$ 5,677	$ 214
Mortgage backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities
Accumulated unrealized losses	$ 6,400
Corporate debt securities
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	28	15
Accumulated unrealized losses	$ 3,698	$ 616
Debt securities
Schedule of Available-for-sale Securities
Interest receivable	$ 7,800	$ 7,300

Debt Securities - Available for

Debt Securities - Available for Sale Securities in Continuous Loss Position (Details) $ in Thousands	Mar. 31, 2021USD ($)security	Dec. 31, 2020USD ($)security
Schedule of Available-for-sale Securities
Number of Securities | security	203	57
Less than 12 months, fair value	$ 830,852	$ 200,831
Less than 12 months, unrealized losses	17,376	895
12 Months or more, fair value	10,328	7,376
12 Months or more, unrealized loss	450	419
Fair Value	841,180	208,207
Unrealized Losses	$ 17,826	$ 1,314
State and political subdivisions
Schedule of Available-for-sale Securities
Number of Securities | security	145	27
Less than 12 months, fair value	$ 274,770	$ 31,489
Less than 12 months, unrealized losses	7,413	157
12 Months or more, fair value	9,468	4,065
12 Months or more, unrealized loss	294	326
Fair Value	284,238	35,554
Unrealized Losses	$ 7,707	$ 483
Mortgage-backed securities
Schedule of Available-for-sale Securities
Number of Securities | security	8	7
Less than 12 months, fair value	$ 20,218	$ 315
Less than 12 months, unrealized losses	743	1
12 Months or more, fair value	110	0
12 Months or more, unrealized loss	1	0
Fair Value	20,328	315
Unrealized Losses	$ 744	$ 1
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Number of Securities | security	22	8
Less than 12 months, fair value	$ 392,272	$ 133,032
Less than 12 months, unrealized losses	5,677	214
12 Months or more, fair value	0	0
12 Months or more, unrealized loss	0	0
Fair Value	392,272	133,032
Unrealized Losses	$ 5,677	$ 214
Corporate debt securities
Schedule of Available-for-sale Securities
Number of Securities | security	28	15
Less than 12 months, fair value	$ 143,592	$ 35,995
Less than 12 months, unrealized losses	3,543	523
12 Months or more, fair value	750	3,311
12 Months or more, unrealized loss	155	93
Fair Value	144,342	39,306
Unrealized Losses	$ 3,698	$ 616

Debt Securities - Proceeds and

Debt Securities - Proceeds and Gross Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Debt Securities [Abstract]
Proceeds from sales of debt securities available for sale	$ 0	$ 22,140
Gross realized gains from sales of debt securities available for sale	0	155
Gross realized losses from sales of debt securities available for sale	0	(113)
Net realized gain from sales of debt securities available for sale	$ 0	$ 42

Debt Securities - Investments C

Debt Securities - Investments Classified by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less, amortized cost	$ 35,751
Due after one year through five years, amortized cost	304,392
Due after five years through ten years, amortized cost	418,530
Due after ten years, amortized cost	337,130
Total maturing securities, amortized cost	1,095,803
Amortized Cost	1,891,427	$ 1,624,103
Fair Value
Due in one year or less, estimated fair value	36,169
Due after one year through five years, estimated fair value	310,792
Due after five years through ten years, estimated fair value	416,063
Due after ten years, estimated fair value	338,884
Total maturing securities, fair value	1,101,908
Debt securities available for sale at fair value	1,896,894	1,657,381
Mortgage-backed securities
Amortized Cost
Amortized Cost	78,512	92,261
Fair Value
Debt securities available for sale at fair value	79,005	94,018
Collateralized mortgage obligations
Amortized Cost
Amortized Cost	717,112	559,718
Fair Value
Debt securities available for sale at fair value	$ 715,981	$ 565,836

Loans Receivable and the Allo_3

Loans Receivable and the Allowance for Credit Losses - Composition of Loans by Lending Classification (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 3,358,161	$ 3,482,223
Allowance for credit losses	(50,650)	(55,500)	$ (51,187)	$ (29,079)
Total loans held for investment, net	3,307,511	3,426,723
Loans pledged for FHLB debt	835,800	830,200
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	117,099	116,392
Allowance for credit losses	(1,110)	(1,346)	(1,146)	(3,748)
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	993,770	1,055,488
Allowance for credit losses	(13,644)	(15,689)	(19,309)	(8,394)
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,693,592	1,732,361
Allowance for credit losses	(30,425)	(32,640)	(23,138)	(13,804)
Commercial real estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	164,927	181,291
Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	138,199	144,970
Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	261,806	256,525
Commercial real estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,128,660	1,149,575
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	474,433	499,106
Allowance for credit losses	(4,655)	(4,882)	(6,425)	(2,685)
Residential real estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	337,408	355,684
Residential real estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	137,025	143,422
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	79,267	78,876
Allowance for credit losses	$ (816)	$ (943)	$ (1,169)	$ (448)

Loans Receivable and the Allo_4

Loans Receivable and the Allowance for Credit Losses - Amortized Cost Basis Based on Delinquency Status (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due
Loans current	$ 3,322,501	$ 3,447,188
Loans held for investment, net of unearned income	3,358,161	3,482,223
90 Days or More Past Due And Accruing	508	739
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	8,355	15,293
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	541	1,901
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	26,764	17,841
Agricultural
Financing Receivable, Recorded Investment, Past Due
Loans current	115,252	115,284
Loans held for investment, net of unearned income	117,099	116,392
90 Days or More Past Due And Accruing	0	0
Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	513	8
Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	106	45
Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,228	1,055
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due
Loans current	989,633	1,051,727
Loans held for investment, net of unearned income	993,770	1,055,488
90 Days or More Past Due And Accruing	6	106
Commercial and industrial | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,042	477
Commercial and industrial | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	124	333
Commercial and industrial | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,971	2,951
Commercial real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	1,667,617	1,707,397
Loans held for investment, net of unearned income	1,693,592	1,732,361
90 Days or More Past Due And Accruing	0	0
Commercial real estate | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	4,309	12,326
Commercial real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	164	684
Commercial real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	21,502	11,954
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment, Past Due
Loans current	163,630	180,059
Loans held for investment, net of unearned income	164,927	181,291
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Construction & development | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	693	586
Commercial real estate | Construction & development | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	42
Commercial real estate | Construction & development | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	604	604
Commercial real estate | Farmland
Financing Receivable, Recorded Investment, Past Due
Loans current	132,004	138,798
Loans held for investment, net of unearned income	138,199	144,970
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Farmland | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	589	226
Commercial real estate | Farmland | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	164	324
Commercial real estate | Farmland | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	5,442	5,622
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due
Loans current	259,564	256,525
Loans held for investment, net of unearned income	261,806	256,525
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Multifamily | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,242	0
Commercial real estate | Multifamily | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	0
Commercial real estate | Multifamily | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	0
Commercial real estate | Commercial real estate-other
Financing Receivable, Recorded Investment, Past Due
Loans current	1,112,419	1,132,015
Loans held for investment, net of unearned income	1,128,660	1,149,575
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Commercial real estate-other | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	785	11,514
Commercial real estate | Commercial real estate-other | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	318
Commercial real estate | Commercial real estate-other | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	15,456	5,728
Residential real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	470,865	494,033
Loans held for investment, net of unearned income	474,433	499,106
90 Days or More Past Due And Accruing	502	625
Residential real estate | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,397	2,439
Residential real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	141	800
Residential real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,030	1,834
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment, Past Due
Loans current	334,061	351,370
Loans held for investment, net of unearned income	337,408	355,684
90 Days or More Past Due And Accruing	468	625
Residential real estate | One- to four- family first liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,337	2,062
Residential real estate | One- to four- family first liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	141	566
Residential real estate | One- to four- family first liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	869	1,686
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment, Past Due
Loans current	136,804	142,663
Loans held for investment, net of unearned income	137,025	143,422
90 Days or More Past Due And Accruing	34	0
Residential real estate | One- to four- family junior liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	60	377
Residential real estate | One- to four- family junior liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	234
Residential real estate | One- to four- family junior liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	161	148
Consumer
Financing Receivable, Recorded Investment, Past Due
Loans current	79,134	78,747
Loans held for investment, net of unearned income	79,267	78,876
90 Days or More Past Due And Accruing	0	8
Consumer | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	94	43
Consumer | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	6	39
Consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	$ 33	$ 47

Loans Receivable and the Allo_5

Loans Receivable and the Allowance for Credit Losses - Nonaccrual Status and Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	$ 43,874		$ 41,950
Nonaccrual with no Allowance for Credit Losses	18,388		16,739
90 Days or More Past Due And Accruing	508		739
Interest Income Recognized on Nonaccrual	236	$ 272
Agricultural
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	2,824		2,584
Nonaccrual with no Allowance for Credit Losses	2,220		1,599
90 Days or More Past Due And Accruing	0		0
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	6,494		7,326
Nonaccrual with no Allowance for Credit Losses	3,401		4,349
90 Days or More Past Due And Accruing	6		106
Commercial real estate
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	31,868		29,344
Nonaccrual with no Allowance for Credit Losses	12,400		10,702
90 Days or More Past Due And Accruing	0		0
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	619		1,145
Nonaccrual with no Allowance for Credit Losses	596		900
90 Days or More Past Due And Accruing	0		0
Commercial real estate | Farmland
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	10,458		8,319
Nonaccrual with no Allowance for Credit Losses	8,834		7,266
90 Days or More Past Due And Accruing	0		0
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	1,096		746
Nonaccrual with no Allowance for Credit Losses	37		39
90 Days or More Past Due And Accruing	0		0
Commercial real estate | Commercial real estate-other
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	19,695		19,134
Nonaccrual with no Allowance for Credit Losses	2,933		2,497
90 Days or More Past Due And Accruing	0		0
Residential real estate
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	2,610		2,617
Nonaccrual with no Allowance for Credit Losses	354		76
90 Days or More Past Due And Accruing	502		625
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	1,863		1,895
Nonaccrual with no Allowance for Credit Losses	353		75
90 Days or More Past Due And Accruing	468		625
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	747		722
Nonaccrual with no Allowance for Credit Losses	1		1
90 Days or More Past Due And Accruing	34		0
Consumer
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	78		79
Nonaccrual with no Allowance for Credit Losses	13		13
90 Days or More Past Due And Accruing	$ 0		$ 8

Loans Receivable and the Allo_6

Loans Receivable and the Allowance for Credit Losses - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment
2021	$ 378,268	$ 1,695,721
2020	1,441,089	414,610
2019	370,251	256,008
2018	198,973	226,020
2017	204,232	177,553
Prior	417,643	318,557
Revolving Loans	347,705	393,754
Loans, gross	3,358,161	3,482,223
Agricultural
Financing Receivable, Recorded Investment
2021	24,372	26,804
2020	18,620	8,692
2019	7,700	3,139
2018	2,483	2,436
2017	2,060	2,060
Prior	4,155	3,163
Revolving Loans	57,709	70,098
Loans, gross	117,099	116,392
Commercial and industrial
Financing Receivable, Recorded Investment
2021	140,935	554,595
2020	399,940	107,634
2019	93,818	58,480
2018	48,775	64,671
2017	62,418	39,767
Prior	131,274	95,902
Revolving Loans	116,610	134,439
Loans, gross	993,770	1,055,488
Commercial real estate
Financing Receivable, Recorded Investment
Loans, gross	1,693,592	1,732,361
Residential real estate
Financing Receivable, Recorded Investment
Loans, gross	474,433	499,106
Consumer
Financing Receivable, Recorded Investment
2021	12,390	30,757
2020	26,546	13,683
2019	11,187	10,354
2018	9,037	4,965
2017	4,116	2,669
Prior	5,741	6,330
Revolving Loans	10,250	10,118
Loans, gross	79,267	78,876
Performing
Financing Receivable, Recorded Investment
2021	52,367	168,496
2020	144,435	68,216
2019	57,182	65,356
2018	56,169	41,740
2017	37,573	43,530
Prior	108,662	80,161
Revolving Loans	94,122	107,162
Loans, gross	550,510	574,661
Performing | Consumer
Financing Receivable, Recorded Investment
2021	12,390	30,755
2020	26,540	13,662
2019	11,168	10,341
2018	9,026	4,960
2017	4,108	2,656
Prior	5,707	6,306
Revolving Loans	10,250	10,118
Loans, gross	79,189	78,798
Nonperforming
Financing Receivable, Recorded Investment
2021	499	248
2020	256	22
2019	163	832
2018	557	325
2017	250	277
Prior	1,314	1,447
Revolving Loans	151	170
Loans, gross	3,190	3,321
Nonperforming | Consumer
Financing Receivable, Recorded Investment
2021	0	2
2020	6	21
2019	19	13
2018	11	5
2017	8	13
Prior	34	24
Revolving Loans	0	0
Loans, gross	78	78
Pass [Member]
Financing Receivable, Recorded Investment
2021	309,478	1,374,858
2020	1,175,644	311,856
2019	281,542	163,152
2018	116,397	171,183
2017	153,967	125,708
Prior	286,042	219,517
Revolving Loans	239,148	261,769
Loans, gross	2,562,218	2,628,043
Pass [Member] | Agricultural
Financing Receivable, Recorded Investment
2021	21,063	17,836
2020	13,560	6,959
2019	6,123	2,764
2018	2,169	2,145
2017	1,796	1,386
Prior	2,501	1,833
Revolving Loans	51,726	60,802
Loans, gross	98,938	93,725
Pass [Member] | Commercial and industrial
Financing Receivable, Recorded Investment
2021	137,814	546,171
2020	393,679	105,523
2019	91,939	57,055
2018	47,502	61,753
2017	59,720	38,695
Prior	127,324	92,526
Revolving Loans	108,875	120,498
Loans, gross	966,853	1,022,221
Special mention / watch
Financing Receivable, Recorded Investment
2021	10,743	88,719
2020	66,053	21,406
2019	13,175	14,506
2018	14,824	8,982
2017	8,866	5,349
Prior	6,416	5,790
Revolving Loans	9,975	12,461
Loans, gross	130,052	157,213
Special mention / watch | Agricultural
Financing Receivable, Recorded Investment
2021	1,485	4,892
2020	3,259	1,083
2019	1,066	117
2018	75	108
2017	94	553
Prior	1,326	1,103
Revolving Loans	4,680	7,210
Loans, gross	11,985	15,066
Special mention / watch | Commercial and industrial
Financing Receivable, Recorded Investment
2021	2,029	3,410
2020	2,821	572
2019	501	497
2018	412	2,261
2017	2,233	611
Prior	259	112
Revolving Loans	4,865	4,796
Loans, gross	13,120	12,259
Substandard [Member]
Financing Receivable, Recorded Investment
2021	5,181	63,399
2020	54,700	13,110
2019	18,189	12,162
2018	11,026	3,789
2017	3,575	2,689
Prior	15,205	11,638
Revolving Loans	4,308	12,191
Loans, gross	112,184	118,978
Substandard [Member] | Agricultural
Financing Receivable, Recorded Investment
2021	1,824	4,075
2020	1,800	650
2019	511	258
2018	239	183
2017	170	121
Prior	327	226
Revolving Loans	1,303	2,086
Loans, gross	6,174	7,599
Substandard [Member] | Commercial and industrial
Financing Receivable, Recorded Investment
2021	1,092	5,014
2020	3,440	1,539
2019	1,378	928
2018	861	656
2017	464	461
Prior	3,688	3,261
Revolving Loans	2,869	9,144
Loans, gross	13,792	21,003
Doubtful
Financing Receivable, Recorded Investment
2021	0	1
2020	1	0
2019	0	0
2018	0	1
2017	1	0
Prior	4	4
Revolving Loans	1	1
Loans, gross	7	7
Doubtful | Agricultural
Financing Receivable, Recorded Investment
2021	0	1
2020	1	0
2019	0	0
2018	0	0
2017	0	0
Prior	1	1
Revolving Loans	0	0
Loans, gross	2	2
Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment
2021	0	0
2020	0	0
2019	0	0
2018	0	1
2017	1	0
Prior	3	3
Revolving Loans	1	1
Loans, gross	5	5
Construction & development | Commercial real estate
Financing Receivable, Recorded Investment
2021	13,493	111,325
2020	86,390	27,402
2019	25,365	15,756
2018	11,189	2,696
2017	1,994	688
Prior	1,376	905
Revolving Loans	25,120	22,519
Loans, gross	164,927	181,291
Construction & development | Pass [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	13,493	109,885
2020	84,966	25,972
2019	23,974	14,994
2018	10,652	2,696
2017	1,994	679
Prior	1,344	876
Revolving Loans	25,120	22,519
Loans, gross	161,543	177,621
Construction & development | Special mention / watch | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	843
2020	835	298
2019	294	542
2018	537	0
2017	0	9
Prior	8	3
Revolving Loans	0	0
Loans, gross	1,674	1,695
Construction & development | Substandard [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	597
2020	589	1,132
2019	1,097	220
2018	0	0
2017	0	0
Prior	24	26
Revolving Loans	0	0
Loans, gross	1,710	1,975
Construction & development | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross	0	0
Farmland | Commercial real estate
Financing Receivable, Recorded Investment
2021	14,127	60,390
2020	54,595	32,232
2019	28,259	14,898
2018	10,904	12,878
2017	9,910	8,905
Prior	18,730	14,368
Revolving Loans	1,674	1,299
Loans, gross	138,199	144,970
Farmland | Pass [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	11,922	48,378
2020	45,736	25,022
2019	21,226	9,577
2018	6,170	10,490
2017	7,527	8,378
Prior	16,130	13,003
Revolving Loans	1,499	1,263
Loans, gross	110,210	116,111
Farmland | Special mention / watch | Commercial real estate
Financing Receivable, Recorded Investment
2021	2,113	8,088
2020	5,349	4,583
2019	4,582	935
2018	1,039	660
2017	656	361
Prior	236	237
Revolving Loans	148	0
Loans, gross	14,123	14,864
Farmland | Substandard [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	92	3,924
2020	3,510	2,627
2019	2,451	4,386
2018	3,695	1,728
2017	1,727	166
Prior	2,364	1,128
Revolving Loans	27	36
Loans, gross	13,866	13,995
Farmland | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross	0	0
Multifamily | Commercial real estate
Financing Receivable, Recorded Investment
2021	41,991	166,261
2020	153,063	18,992
2019	18,241	17,805
2018	3,888	10,706
2017	8,644	11,622
Prior	25,093	19,581
Revolving Loans	10,886	11,558
Loans, gross	261,806	256,525
Multifamily | Pass [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	41,991	164,817
2020	151,623	18,992
2019	18,241	17,805
2018	3,888	10,706
2017	8,644	10,201
Prior	23,693	19,581
Revolving Loans	10,886	11,558
Loans, gross	258,966	253,660
Multifamily | Special mention / watch | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	345
2020	344	0
2019	0	0
2018	0	0
2017	0	59
Prior	51	0
Revolving Loans	0	0
Loans, gross	395	404
Multifamily | Substandard [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	1,099
2020	1,096	0
2019	0	0
2018	0	0
2017	0	1,362
Prior	1,349	0
Revolving Loans	0	0
Loans, gross	2,445	2,461
Multifamily | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross	0	0
Commercial real estate-other | Commercial real estate
Financing Receivable, Recorded Investment
2021	90,484	607,602
2020	583,790	151,420
2019	139,523	79,742
2018	65,008	90,568
2017	81,383	70,704
Prior	127,039	103,030
Revolving Loans	41,433	46,509
Loans, gross	1,128,660	1,149,575
Commercial real estate-other | Pass [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	83,195	487,771
2020	486,080	129,388
2019	120,039	60,957
2018	46,016	83,393
2017	74,286	66,369
Prior	115,050	91,698
Revolving Loans	41,042	45,129
Loans, gross	965,708	964,705
Commercial real estate-other | Special mention / watch | Commercial real estate
Financing Receivable, Recorded Investment
2021	5,116	71,141
2020	53,445	14,870
2019	6,732	12,415
2018	12,761	5,953
2017	5,883	3,756
Prior	4,536	4,335
Revolving Loans	282	455
Loans, gross	88,755	112,925
Commercial real estate-other | Substandard [Member] | Commercial real estate
Financing Receivable, Recorded Investment
2021	2,173	48,690
2020	44,265	7,162
2019	12,752	6,370
2018	6,231	1,222
2017	1,214	579
Prior	7,453	6,997
Revolving Loans	109	925
Loans, gross	74,197	71,945
Commercial real estate-other | Doubtful | Commercial real estate
Financing Receivable, Recorded Investment
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross	0	0
One- to four- family first liens | Residential real estate
Financing Receivable, Recorded Investment
2021	28,648	118,162
2020	100,291	46,582
2019	39,402	43,471
2018	37,411	30,931
2017	28,050	37,555
Prior	96,322	69,734
Revolving Loans	7,284	9,249
Loans, gross	337,408	355,684
One- to four- family first liens | Performing | Residential real estate
Financing Receivable, Recorded Investment
2021	28,149	117,923
2020	100,073	46,581
2019	39,401	42,875
2018	37,074	30,628
2017	27,824	37,407
Prior	95,272	68,501
Revolving Loans	7,284	9,249
Loans, gross	335,077	353,164
One- to four- family first liens | Nonperforming | Residential real estate
Financing Receivable, Recorded Investment
2021	499	239
2020	218	1
2019	1	596
2018	337	303
2017	226	148
Prior	1,050	1,233
Revolving Loans	0	0
Loans, gross	2,331	2,520
One- to four- family junior liens | Residential real estate
Financing Receivable, Recorded Investment
2021	11,828	19,825
2020	17,854	7,973
2019	6,756	12,363
2018	10,278	6,169
2017	5,657	3,583
Prior	7,913	5,544
Revolving Loans	76,739	87,965
Loans, gross	137,025	143,422
One- to four- family junior liens | Performing | Residential real estate
Financing Receivable, Recorded Investment
2021	11,828	19,818
2020	17,822	7,973
2019	6,613	12,140
2018	10,069	6,152
2017	5,641	3,467
Prior	7,683	5,354
Revolving Loans	76,588	87,795
Loans, gross	136,244	142,699
One- to four- family junior liens | Nonperforming | Residential real estate
Financing Receivable, Recorded Investment
2021	0	7
2020	32	0
2019	143	223
2018	209	17
2017	16	116
Prior	230	190
Revolving Loans	151	170
Loans, gross	$ 781	$ 723

Loans Receivable and the Allo_7

Loans Receivable and the Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 55,500	$ 29,079
Charge-offs	(1,003)	(1,497)
Recoveries	687	299
Credit loss expense	(4,534)	19,322
Ending balance	50,650	$ 51,187	$ 29,079
Accounting standards update		us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Credit loss expense, off balance sheet credit exposure	(200)	$ 2,400
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		3,984
Ending balance			$ 3,984
Loans receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued interest receivable	11,700			$ 14,200
Agricultural
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,346	3,748
Charge-offs	(41)	(84)
Recoveries	27	25
Credit loss expense	(222)	14
Ending balance	1,110	1,146	3,748
Agricultural | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		(2,557)
Ending balance			(2,557)
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15,689	8,394
Charge-offs	(666)	(471)
Recoveries	292	213
Credit loss expense	(1,671)	8,445
Ending balance	13,644	19,309	8,394
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,728
Ending balance			2,728
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	32,640	13,804
Charge-offs	(66)	(720)
Recoveries	306	8
Credit loss expense	(2,455)	8,746
Ending balance	30,425	23,138	13,804
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		1,300
Ending balance			1,300
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,882	2,685
Charge-offs	(35)	0
Recoveries	9	7
Credit loss expense	(201)	1,683
Ending balance	4,655	6,425	2,685
Residential real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,050
Ending balance			2,050
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	943	448
Charge-offs	(195)	(222)
Recoveries	53	46
Credit loss expense	15	434
Ending balance	$ 816	1,169	448
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ 463
Ending balance			$ 463

Loans Receivable and the Allo_8

Loans Receivable and the Allowance for Credit Losses - Allowance for Loan Losses Based on Evaluation Method (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans held for investment, net of unearned income
Individually evaluated for impairment	$ 39,703	$ 37,340
Collectively evaluated for impairment	3,318,458	3,444,883
Loans, gross	3,358,161	3,482,223
Allowance for credit losses:
Individually evaluated for impairment	3,468	3,075
Collectively evaluated for impairment	47,182	52,425
Financing receivable, allowance for credit loss	50,650	55,500	$ 51,187	$ 29,079
Agricultural
Loans held for investment, net of unearned income
Individually evaluated for impairment	2,463	2,088
Collectively evaluated for impairment	114,636	114,304
Loans, gross	117,099	116,392
Allowance for credit losses:
Individually evaluated for impairment	39	66
Collectively evaluated for impairment	1,071	1,280
Financing receivable, allowance for credit loss	1,110	1,346	1,146	3,748
Commercial and industrial
Loans held for investment, net of unearned income
Individually evaluated for impairment	5,591	6,582
Collectively evaluated for impairment	988,179	1,048,906
Loans, gross	993,770	1,055,488
Allowance for credit losses:
Individually evaluated for impairment	773	799
Collectively evaluated for impairment	12,871	14,890
Financing receivable, allowance for credit loss	13,644	15,689	19,309	8,394
Commercial real estate
Loans held for investment, net of unearned income
Individually evaluated for impairment	30,949	28,235
Collectively evaluated for impairment	1,662,643	1,704,126
Loans, gross	1,693,592	1,732,361
Allowance for credit losses:
Individually evaluated for impairment	2,486	2,031
Collectively evaluated for impairment	27,939	30,609
Financing receivable, allowance for credit loss	30,425	32,640	23,138	13,804
Residential real estate
Loans held for investment, net of unearned income
Individually evaluated for impairment	692	427
Collectively evaluated for impairment	473,741	498,679
Loans, gross	474,433	499,106
Allowance for credit losses:
Individually evaluated for impairment	170	179
Collectively evaluated for impairment	4,485	4,703
Financing receivable, allowance for credit loss	4,655	4,882	6,425	2,685
Consumer
Loans held for investment, net of unearned income
Individually evaluated for impairment	8	8
Collectively evaluated for impairment	79,259	78,868
Loans, gross	79,267	78,876
Allowance for credit losses:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	816	943
Financing receivable, allowance for credit loss	$ 816	$ 943	$ 1,169	$ 448

Loans Receivable and the Allo_9

Loans Receivable and the Allowance for Credit Losses - Primary Type of Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	$ 3,307,511	$ 3,426,723
Financing receivable, allowance for credit loss	50,650	55,500	$ 51,187	$ 29,079
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	33,233	29,845
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	3,132	3,869
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	3,338	3,626
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	39,703	37,340
Financing receivable, allowance for credit loss	3,468	3,075
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	1,110	1,346	1,146	3,748
Agricultural | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	963	516
Agricultural | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	758	824
Agricultural | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	742	748
Agricultural | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	2,463	2,088
Financing receivable, allowance for credit loss	39	66
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	13,644	15,689	19,309	8,394
Commercial and industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	629	667
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	2,366	3,037
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	2,596	2,878
Commercial and industrial | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	5,591	6,582
Financing receivable, allowance for credit loss	773	799
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	30,425	32,640	23,138	13,804
Commercial real estate | Construction & development | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	595	899
Commercial real estate | Construction & development | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Construction & development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Construction & development | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	595	899
Financing receivable, allowance for credit loss	0	0
Commercial real estate | Farmland | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	10,132	7,850
Commercial real estate | Farmland | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Farmland | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Farmland | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	10,132	7,850
Financing receivable, allowance for credit loss	123	88
Commercial real estate | Multifamily | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	1,096	746
Commercial real estate | Multifamily | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Multifamily | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Multifamily | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	1,096	746
Financing receivable, allowance for credit loss	452	202
Commercial real estate | Commercial real estate-other | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	19,126	18,740
Commercial real estate | Commercial real estate-other | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Commercial real estate-other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Commercial real estate | Commercial real estate-other | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	19,126	18,740
Financing receivable, allowance for credit loss	1,911	1,741
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	4,655	4,882	6,425	2,685
Residential real estate | One- to four- family first liens | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	483	204
Residential real estate | One- to four- family first liens | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Residential real estate | One- to four- family first liens | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Residential real estate | One- to four- family first liens | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	483	204
Financing receivable, allowance for credit loss	132	132
Residential real estate | One- to four- family junior liens | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	209	223
Residential real estate | One- to four- family junior liens | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Residential real estate | One- to four- family junior liens | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Residential real estate | One- to four- family junior liens | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	209	223
Financing receivable, allowance for credit loss	38	47
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	816	943	$ 1,169	$ 448
Consumer | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	8	8
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0	0
Consumer | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	8	8
Financing receivable, allowance for credit loss	$ 0	$ 0

Loans Receivable and the All_10

Loans Receivable and the Allowance for Credit Losses - TDR Disclosures (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)contractsecurity	Mar. 31, 2020USD ($)contractsecurity	Dec. 31, 2020USD ($)
Financing Receivable, Modifications
Number of Contracts | contract	3	3
Pre-Modification Outstanding Recorded Investment	$ 287	$ 727
Post-Modification Outstanding Recorded Investment	$ 287	$ 727
TDR, subsequent to restructure, number of contracts | security	0	0
Financing receivable, TDR	$ 9,900		$ 11,000
Loans and leases receivable, impaired, commitment to lend	7
COVID-19
Financing Receivable, Modifications
Amount of deferrals	$ 16,700
Commercial and industrial | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 242
Post-Modification Outstanding Recorded Investment	$ 0	$ 242
Commercial real estate | Commercial real estate-other | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 485
Post-Modification Outstanding Recorded Investment	$ 0	$ 485
Commercial real estate | Commercial real estate-other | Other
Financing Receivable, Modifications
Number of Contracts | contract	1	0
Pre-Modification Outstanding Recorded Investment	$ 44	$ 0
Post-Modification Outstanding Recorded Investment	$ 44	$ 0
Residential real estate | One- to four- family first liens | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract	1	0
Pre-Modification Outstanding Recorded Investment	$ 93	$ 0
Post-Modification Outstanding Recorded Investment	$ 93	$ 0
Residential real estate | One- to four- family first liens | Other
Financing Receivable, Modifications
Number of Contracts | contract	1	0
Pre-Modification Outstanding Recorded Investment	$ 150	$ 0
Post-Modification Outstanding Recorded Investment	$ 150	$ 0

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Balance Sheet Offsetting - Derivatives and Hedging Activities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 6,894	$ 10,796
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	25,373	25,559
Derivative assets, fair value	547	34
Derivative liabilities, fair value	1,329	2,452
Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	25,373	25,559
Derivative assets, fair value	547	34
Derivative liabilities, fair value	1,329	2,452
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	361,134	361,676
Derivative assets, fair value	6,347	10,762
Derivative liabilities, fair value	6,365	10,815
Not Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	346,944	347,380
Derivative assets, fair value	6,346	10,758
Derivative liabilities, fair value	6,361	10,807
Not Designated as Hedging Instrument | RPAs | RPAs - protection sold
Derivatives, Fair Value [Line Items]
Derivative, notional amount	4,412	4,471
Derivative assets, fair value	1	4
Derivative liabilities, fair value	0	0
Not Designated as Hedging Instrument | RPAs | RPAs - protection purchased
Derivatives, Fair Value [Line Items]
Derivative, notional amount	9,778	9,825
Derivative assets, fair value	0	0
Derivative liabilities, fair value	$ 4	$ 8

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Balance Sheet Offsetting - Additional Information (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Feb. 29, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of derivatives in a net liability position, including accrued interest	$ 5,000,000
Cash collateral paid	2,140,000	$ 13,267,000
Assets needed for immediate settlement, aggregate fair value	5,000,000
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	25,373,000	25,559,000
Interest rate swaps | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 25,373,000	$ 25,559,000
Interest rate swaps | Cash flow hedges | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount			$ 30,000,000

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Balance Sheet Offsetting - Schedule of Impacts on Statements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative	$ 0	$ (888)
Amount of Gain (Loss) Reclassified from AOCI into Income	0	5
Interest income	38,617	37,406
Interest expense	5,587	9,999
Designated as Hedging Instrument | Interest rate swaps | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative	0	(888)
Designated as Hedging Instrument | Interest rate swaps | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest income	(108)	(47)
Interest expense	0	0
Designated as Hedging Instrument | Interest rate swaps | Interest Income | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from AOCI into income	0	5
Designated as Hedging Instrument | Interest rate swaps | Interest Income | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of hedged items	(1,633)	1,750
Change in fair value of derivative instruments	1,123	(1,761)
Designated as Hedging Instrument | Interest rate swaps | Other Income | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income	0	5
Amount reclassified from AOCI into income	0	0
Designated as Hedging Instrument | Interest rate swaps | Other Income | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of hedged items	0	0
Change in fair value of derivative instruments	$ 0	$ 0

Derivatives, Hedging Activiti_6

Derivatives, Hedging Activities and Balance Sheet Offsetting - Hedged Items in Fair Value Hedging Relationship (Details) - Interest rate swaps - Designated as Hedging Instrument - Fair value hedges $ in Thousands	Mar. 31, 2021USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Assets	$ 26,173
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset	$ 786

Derivatives, Hedging Activiti_7

Derivatives, Hedging Activities and Balance Sheet Offsetting - Schedule of Other Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	$ (34)	$ 244
Interest rate swaps | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	(34)	141
RPAs | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	$ 0	$ 103

Derivatives, Hedging Activiti_8

Derivatives, Hedging Activities and Balance Sheet Offsetting - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Asset Derivatives
Gross Amounts of Recognized Assets (Liabilities)	$ 6,894	$ 10,796
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets (Liabilities) presented in the Balance Sheet	6,894	10,796
Financial Instruments	0	0
Cash Collateral Received (Paid)	0	0
Net Assets (Liabilities)	6,894	10,796
Liability Derivatives
Gross Amounts of Recognized Assets (Liabilities)	(7,694)	(13,267)
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets (Liabilities) presented in the Balance Sheet	(7,694)	(13,267)
Financial Instruments	0	0
Cash Collateral Received (Paid)	(2,140)	(13,267)
Net Assets (Liabilities)	$ (5,554)	$ 0

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Goodwill and Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 62,477	$ 62,477

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 49,710	$ 49,710
Accumulated Amortization	(33,015)	(31,508)
Net Carrying Amount	16,695	18,202
Indefinite-lived trade name intangible	7,040	7,040
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	41,745	41,745
Accumulated Amortization	(27,628)	(26,440)
Net Carrying Amount	14,117	15,305
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,265	5,265
Accumulated Amortization	(2,920)	(2,630)
Net Carrying Amount	2,345	2,635
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,700	2,700
Accumulated Amortization	(2,467)	(2,438)
Net Carrying Amount	$ 233	$ 262

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2021	$ 3,851
2022	4,363
2023	3,402
2024	2,443
2025	1,547
Thereafter	1,089
Net Carrying Amount	16,695	$ 18,202
Core deposit intangible
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2021	3,002
2022	3,487
2023	2,833
2024	2,180
2025	1,526
Thereafter	1,089
Net Carrying Amount	14,117	15,305
Customer relationship intangible
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2021	772
2022	797
2023	518
2024	239
2025	19
Thereafter	0
Net Carrying Amount	2,345	2,635
Other
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2021	77
2022	79
2023	51
2024	24
2025	2
Thereafter	0
Net Carrying Amount	$ 233	$ 262

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Bank-owned life insurance	$ 84,024	$ 83,483
Interest receivable	19,749	21,706
FHLB stock	12,170	13,784
Mortgage servicing rights	5,928	5,137
Operating lease right-of-use assets, net	3,364	3,613
Federal and state income taxes, deferred	10,294	3,845
Derivative assets	6,894	10,796
Other receivables/assets	13,102	11,129
Other assets	$ 155,525	$ 153,493

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Noninterest bearing deposits	$ 958,526	$ 910,655
Interest checking deposits	1,406,070	1,351,641
Money market deposits	950,300	918,654
Savings deposits	580,862	529,751
Time deposits under $250	558,338	581,471
Time deposits of $250 or more	340,467	254,877
Total deposits	4,794,563	4,547,049
Domestic time deposit, brokered	6,200	7,800
Domestic non-time deposit, brokered	17,200	14,800
Deposits of government entities	$ 244,900	$ 156,700

Short-Term Borrowings (Details)

Short-Term Borrowings (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Weighted Average Rate	0.25%	0.28%
Short-term borrowings	$ 175,785,000	$ 230,789,000
Pledged securities	$ 516,100,000	$ 434,700,000
Securities sold under agreements to repurchase
Short-term Debt [Line Items]
Weighted Average Rate	0.25%	0.28%
Short-term borrowings	$ 175,785,000	$ 174,289,000
Federal Home Loan Bank advances
Short-term Debt [Line Items]
Weighted Average Rate	0.00%	0.29%
Short-term borrowings	$ 0	$ 56,500,000
Federal funds purchased
Short-term Debt [Line Items]
Short-term borrowings	0	0
Unsecured line of credit, maximum borrowing capacity	145,000,000
Federal Reserve Bank advances
Short-term Debt [Line Items]
Short-term borrowings	0	0
Financing capacity	64,800,000	67,700,000
Pledged securities	69,900,000	72,000,000
Unsecured line of credit
Short-term Debt [Line Items]
Short-term borrowings	0	$ 0
Unsecured line of credit, maximum borrowing capacity	$ 25,000,000
Unused commitment fee percentage	0.30%
Unsecured line of credit | LIBOR
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.75%

Long-Term Debt - Junior Subordi

Long-Term Debt - Junior Subordinated Notes (Details) - Junior subordinated notes - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument, face amount	$ 44,847		$ 44,847
Debt instrument, book value	$ 41,807		41,763
Stated maturity date	5 years
ATBancorp Statutory Trust I
Debt Instrument [Line Items]
Debt instrument, face amount	$ 7,732		7,732
Debt instrument, book value	$ 6,859		$ 6,850
Interest rate	1.86%		1.90%
ATBancorp Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.68%	1.68%
ATBancorp Statutory Trust II
Debt Instrument [Line Items]
Debt instrument, face amount	$ 12,372		$ 12,372
Debt instrument, book value	$ 10,864		$ 10,850
Interest rate	1.83%		1.87%
ATBancorp Statutory Trust II | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.65%	1.65%
Barron Investment Capital Trust I
Debt Instrument [Line Items]
Debt instrument, face amount	$ 2,062		$ 2,062
Debt instrument, book value	$ 1,775		$ 1,767
Interest rate	2.35%		2.39%
Barron Investment Capital Trust I | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.15%	2.15%
Central Bancshares Capital Trust II
Debt Instrument [Line Items]
Debt instrument, face amount	$ 7,217		$ 7,217
Debt instrument, book value	$ 6,845		$ 6,832
Interest rate	3.68%		3.72%
Central Bancshares Capital Trust II | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.50%	3.50%
MidWestOne Statutory Trust II
Debt Instrument [Line Items]
Debt instrument, face amount	$ 15,464		$ 15,464
Debt instrument, book value	$ 15,464		$ 15,464
Interest rate	1.77%		1.81%
MidWestOne Statutory Trust II | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.59%	1.59%

Long-Term Debt - Subordinated D

Long-Term Debt - Subordinated Debentures (Details) - Subordinated debt - USD ($) $ in Thousands	Jul. 28, 2020	Mar. 31, 2021	May 01, 2019
Debt Instrument [Line Items]
Debt instrument, face amount			$ 10,900
Interest rate		6.50%
Percentage of debentures, decrease to Tier 2 treatment, per year		20.00%
Decrease to Tier 2 treatment, period of recognition		5 years
Percentage of debentures, measured as Tier 2		40.00%
5.75% Fixed to floating subordinated notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 63,750
Interest rate	5.75%
5.75% Fixed to floating subordinated notes | Private placement
Debt Instrument [Line Items]
Sale of equity	$ 65,000

Long-Term Debt - Other Long-Ter

Long-Term Debt - Other Long-Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Finance lease payable
Debt Instrument [Line Items]
Weighted Average Rate	8.89%	8.89%
Balance	$ 1,061	$ 1,096
FHLB borrowings
Debt Instrument [Line Items]
Weighted Average Rate	1.90%	1.92%
Balance	$ 84,174	$ 91,198
Federal home loan, bank advances general debt obligations, disclosures maximum borrowing capacity as percentage of total assets	45.00%
Other long-term debt
Debt Instrument [Line Items]
Weighted Average Rate	1.99%	2.00%
Balance	$ 85,235	$ 92,294

Long-Term Debt - Federal Home L

Long-Term Debt - Federal Home Loan Bank Advances (Details) $ in Thousands	Mar. 31, 2021USD ($)
Weighted Average Rate
Due in 2021	0.76%
Due in 2022	2.68%
Due in 2023	2.79%
Due in 2024	3.15%
Amount
Due in 2021	$ 36,000
Due in 2022	31,000
Due in 2023	11,000
Due in 2024	6,000
Total	84,000
Valuation adjustment from acquisition accounting	174
Total	$ 84,174

Earnings per Share - Basic And

Earnings per Share - Basic And Diluted Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic Earnings (Loss) Per Share:
Net income (loss)	$ 21,648	$ (1,975)
Weighted average shares outstanding (in shares)	15,990,724	16,141,500
Basic (loss) earnings per common share (in dollars per share)	$ 1.35	$ (0.12)
Diluted Earnings (Loss) Per Share:
Net income (loss)	$ 21,648	$ (1,975)
Weighted average shares outstanding, including all dilutive potential shares (in shares)	16,020,920	16,141,500
Diluted (loss) earnings per common share (in dollars per share)	$ 1.35	$ (0.12)

Earnings per Share - Anti-Dilut

Earnings per Share - Anti-Dilutive Shares (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Dilutive shares (in shares)	0	18,042

Regulatory Capital Requiremen_3

Regulatory Capital Requirements and Restrictions on Subsidiary Cash (Details)	Jul. 28, 2020USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash reserve deposit required and made		$ 0	$ 0
Capital		$ 589,205,000	$ 572,437,000
Capital to risk weighted assets		0.1375	0.1341
Capital required for capital adequacy		$ 450,010,000	$ 448,068,000
Capital required for capital adequacy to risk weighted assets		0.1050	0.1050
Tier one risk based capital		$ 477,086,000	$ 456,526,000
Tier one risk based capital to risk weighted assets		0.1113	0.1070
Tier one risk based capital required for capital adequacy		$ 364,294,000	$ 362,722,000
Tier one risk based capital required for capital adequacy to risk weighted assets		0.0850	0.0850
Common equity tier one capital		$ 435,279,000	$ 414,763,000
Common equity tier one capital to risk weighted assets		10.16%	9.72%
Common equity tier one capital required for capital adequacy		$ 300,006,000	$ 298,712,000
Common equity tier one capital required for capital adequacy to risk weighted assets		7.00%	7.00%
Tier one leverage capital		$ 477,086,000	$ 456,526,000
Tier one leverage capital to average assets		0.0878	0.0850
Tier one leverage capital required for capital adequacy		$ 217,315,000	$ 214,795,000
Tier one leverage capital required for capital adequacy to average assets		0.0400	0.0400
Capital conservation buffer		0.0250	0.0250
Subordinated debt
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Interest rate		6.50%
5.75% Fixed to floating subordinated notes | Subordinated debt
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Interest rate	5.75%
5.75% Fixed to floating subordinated notes | Subordinated debt | Private placement
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Sale of equity	$ 65,000,000
MidWestOne Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital		$ 563,501,000	$ 547,558,000
Capital to risk weighted assets		0.1319	0.1289
Capital required for capital adequacy		$ 448,555,000	$ 446,113,000
Capital required for capital adequacy to risk weighted assets		0.1050	0.1050
Capital required to be well capitalized		$ 427,195,000	$ 424,870,000
Capital required to be well capitalized to risk weighted assets		0.1000	0.1000
Tier one risk based capital		$ 520,716,000	$ 500,981,000
Tier one risk based capital to risk weighted assets		0.1219	0.1179
Tier one risk based capital required for capital adequacy		$ 363,116,000	$ 361,139,000
Tier one risk based capital required for capital adequacy to risk weighted assets		0.0850	0.0850
Tier one risk based capital required to be well capitalized		$ 341,756,000	$ 339,896,000
Tier one risk based capital required to be well capitalized to risk weighted assets		0.0800	0.0800
Common equity tier one capital		$ 520,716,000	$ 500,981,000
Common equity tier one capital to risk weighted assets		12.19%	11.79%
Common equity tier one capital required for capital adequacy		$ 299,037,000	$ 297,409,000
Common equity tier one capital required for capital adequacy to risk weighted assets		7.00%	7.00%
Common equity tier one risk based capital required to be well capitalized		$ 277,677,000	$ 276,165,000
Common equity tier one risk based capital required to be well capitalized to risk weighted assets		6.50%	6.50%
Tier one leverage capital		$ 520,716,000	$ 500,981,000
Tier one leverage capital to average assets		0.0960	0.0935
Tier one leverage capital required for capital adequacy		$ 216,913,000	$ 214,251,000
Tier one leverage capital required for capital adequacy to average assets		0.0400	0.0400
Tier one leverage capital required to be well capitalized		$ 271,142,000	$ 271,992,000
Tier one leverage capital required to be well capitalized to average assets		0.0500	0.0500

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Other commitment	$ 1,000,243	$ 991,442
Commitments to sell loans
Other Commitments [Line Items]
Other commitment	58,333	59,956
Commitments to extend credit
Other Commitments [Line Items]
Other commitment	920,493	897,274
Standby letters of credit
Other Commitments [Line Items]
Other commitment	$ 21,417	$ 34,212

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Concentration Risk [Line Items]
Off-balance sheet, credit loss, liability	$ 3.9		$ 4.1
Credit loss expense, off balance sheet credit exposure	$ (0.2)	$ 2.4
Credit Concentration Risk | Loans Concentration | Commercial real estate
Concentration Risk [Line Items]
Concentration risk, percentage	60.00%
Credit Concentration Risk | Loans Concentration | Agricultural Related Loan Financing Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	8.00%
Credit Concentration Risk | Investment Securities | State and political subdivisions | IOWA
Concentration Risk [Line Items]
Concentration risk, percentage	20.00%
Credit Concentration Risk | Investment Securities | State and political subdivisions | MINNESOTA
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%

Fair Value of Financial Instr_3

Fair Value of Financial Instruments and Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	$ 1,896,894	$ 1,657,381
Derivative assets	6,894	10,796
Mortgage servicing rights	5,928	5,137
U.S. Government agencies and corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	340	361
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	673,923	628,346
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	79,005	94,018
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	427,645	368,820
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	6,894	10,796
Mortgage servicing rights	5,928	5,137
Derivative liabilities	7,694	13,267
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	0	0
Mortgage servicing rights	0	0
Derivative liabilities	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	6,894	10,796
Mortgage servicing rights	5,928	5,137
Derivative liabilities	7,694	13,267
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	0	0
Mortgage servicing rights	0	0
Derivative liabilities	0	0
Recurring | U.S. Government agencies and corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	340	361
Recurring | U.S. Government agencies and corporations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | U.S. Government agencies and corporations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	340	361
Recurring | U.S. Government agencies and corporations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	673,923	628,346
Recurring | State and political subdivisions | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | State and political subdivisions | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	673,923	628,346
Recurring | State and political subdivisions | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	79,005	94,018
Recurring | Mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	79,005	94,018
Recurring | Mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	715,981	565,836
Recurring | Collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	715,981	565,836
Recurring | Collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	427,645	368,820
Recurring | Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	0	0
Recurring | Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	427,645	368,820
Recurring | Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments and Fair Value Measurements - Measured on a Nonrecurring Basis (Details) $ in Thousands	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	$ 1,487	$ 2,316
Nonrecurring | Collateral dependent individually analyzed loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	36,235	34,265
Nonrecurring | Collateral dependent individually analyzed loans | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	0	0
Nonrecurring | Collateral dependent individually analyzed loans | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	0	0
Nonrecurring | Collateral dependent individually analyzed loans | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	$ 36,235	34,265
Nonrecurring | Collateral dependent individually analyzed loans | Level 3 | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0
Nonrecurring | Collateral dependent individually analyzed loans | Level 3 | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.91
Nonrecurring | Collateral dependent individually analyzed loans | Level 3 | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.22
Nonrecurring | Foreclosed assets, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	$ 1,487	2,316
Nonrecurring | Foreclosed assets, net | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	0	0
Nonrecurring | Foreclosed assets, net | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	0	0
Nonrecurring | Foreclosed assets, net | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	$ 1,487	$ 2,316
Nonrecurring | Foreclosed assets, net | Level 3 | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.08
Nonrecurring | Foreclosed assets, net | Level 3 | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.66
Nonrecurring | Foreclosed assets, net | Level 3 | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.32

Fair Value of Financial Instr_5

Fair Value of Financial Instruments and Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets:
Debt securities available for sale	$ 1,896,894	$ 1,657,381
Interest receivable	19,749	21,706
FHLB stock	12,170	13,784
Derivative assets	6,894	10,796
Financial liabilities:
Interest bearing deposits	1,406,070	1,351,641
Short-term borrowings	175,785	230,789
Finance leases payable	1,061	1,096
Carrying Amount
Financial assets:
Cash and cash equivalents	145,769	82,659
Debt securities available for sale	1,896,894	1,657,381
Loans held for sale	58,333	59,956
Loans held for investment, net	3,307,511	3,426,723
Interest receivable	19,749	21,706
FHLB stock	12,170
Derivative assets	6,894	10,796
Financial liabilities:
Noninterest bearing deposits	958,526	910,655
Interest bearing deposits	3,836,037	3,636,394
Short-term borrowings	175,785	230,789
Finance leases payable	1,061	1,096
FHLB borrowings	84,174	91,198
Junior subordinated notes issued to capital trusts	41,807	41,763
Subordinated debentures	74,654	74,634
Derivative liabilities	7,694	13,267
Estimated Fair Value
Financial assets:
Cash and cash equivalents	145,769	82,659
Debt securities available for sale	1,896,894	1,657,381
Loans held for sale	58,608	60,039
Loans held for investment, net	3,341,347	3,469,515
Interest receivable	19,749	21,706
FHLB stock	12,170	13,784
Derivative assets	6,894	10,796
Financial liabilities:
Noninterest bearing deposits	958,526	910,655
Interest bearing deposits	3,838,265	3,640,365
Short-term borrowings	175,785	230,789
Finance leases payable	1,061	1,096
FHLB borrowings	85,986	93,380
Junior subordinated notes issued to capital trusts	34,066	33,986
Subordinated debentures	78,388	77,228
Derivative liabilities	7,694	13,267
Level 1 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	145,769	82,659
Debt securities available for sale	0	0
Loans held for sale	0	0
Loans held for investment, net	0	0
Interest receivable	0	0
FHLB stock	0	0
Derivative assets	0	0
Financial liabilities:
Noninterest bearing deposits	958,526	910,655
Interest bearing deposits	2,937,232	2,800,046
Short-term borrowings	175,785	230,789
Finance leases payable	0	0
FHLB borrowings	0	0
Junior subordinated notes issued to capital trusts	0	0
Subordinated debentures	0	0
Derivative liabilities	0	0
Level 2 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	0	0
Debt securities available for sale	1,896,894	1,657,381
Loans held for sale	58,608	60,039
Loans held for investment, net	0	0
Interest receivable	19,749	21,706
FHLB stock	12,170	13,784
Derivative assets	6,894	10,796
Financial liabilities:
Noninterest bearing deposits	0	0
Interest bearing deposits	901,033	840,319
Short-term borrowings	0	0
Finance leases payable	1,061	1,096
FHLB borrowings	85,986	93,380
Junior subordinated notes issued to capital trusts	34,066	33,986
Subordinated debentures	78,388	77,228
Derivative liabilities	7,694	13,267
Level 3 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	0	0
Debt securities available for sale	0	0
Loans held for sale	0	0
Loans held for investment, net	3,341,347	3,469,515
Interest receivable		0
FHLB stock		0
Derivative assets	0	0
Financial liabilities:
Noninterest bearing deposits	0	0
Interest bearing deposits	0
Short-term borrowings		0
Finance leases payable	0	0
FHLB borrowings	0
Junior subordinated notes issued to capital trusts	0
Subordinated debentures	0
Derivative liabilities	$ 0	$ 0

Leases - Assets and Liabilities

Leases - Assets and Liabilities (Details) $ in Thousands	Mar. 31, 2021USD ($)lease	Dec. 31, 2020USD ($)
Leases [Abstract]
Number of leases | lease	1
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 3,364	$ 3,613
Finance lease right-of-use asset	518	542
Total right-of-use assets	3,882	4,155
Lease Liabilities
Operating lease liability	4,316	4,583
Finance lease liability	1,061	1,096
Total lease liabilities	$ 5,377	$ 5,679
Weighted-average remaining lease term
Operating leases	8 years 11 months 1 day	8 years 9 months 25 days
Finance lease	5 years 5 months 1 day	5 years 8 months 1 day
Weighted-average discount rate
Operating leases	3.98%	3.92%
Finance lease	8.89%	8.89%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Premises and equipment, net	Premises and equipment, net
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Long-term debt	Long-term debt

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost	$ 299	$ 319
Variable lease cost	72	39
Interest on lease liabilities	23	26
Amortization of right-of-use assets	24	24
Net lease cost	418	408
Operating cash flows from operating leases	572	503
Operating cash flows from finance lease	23	27
Finance cash flows from finance lease	$ 35	$ 31

Leases - Maturity Schedule (Det

Leases - Maturity Schedule (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finance Leases
December 31, 2020	$ 177
December 31, 2021	240
December 31, 2022	245
December 31, 2023	250
December 31, 2024	255
Thereafter	171
Total undiscounted lease payment	1,338
Amounts representing interest	(277)
Finance lease liability	1,061	$ 1,096
Operating Leases
December 31, 2020	807
December 31, 2021	993
December 31, 2022	932
December 31, 2023	702
December 31, 2024	232
Thereafter	1,907
Total undiscounted lease payment	5,573
Amounts representing interest	(1,257)
Operating lease liability	$ 4,316	$ 4,583

Subsequent Events (Details)

Subsequent Events (Details) - Common Stock - Subsequent event - USD ($)	1 Months Ended
	May 04, 2021	Apr. 29, 2021
Subsequent Event
Dividends payable (in dollars per share)		$ 0.2250
Stock repurchased during period (in shares)	1,890
Stock repurchased during period, value	$ 55,500
Stock repurchase program, remaining authorized repurchase amount	$ 2,600,000