MidWestOne Financial (MOFG) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2020	Nov. 03, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
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		16,096,324
Entity Central Index Key	0001412665
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 71,901	$ 67,174
Interest earning deposits in banks	55,421	6,112
Federal funds sold	7,540	198
Total cash and cash equivalents	134,862	73,484
Debt securities available for sale at fair value	1,366,344	785,977
Loans held for sale	13,096	5,400
Gross loans held for investment	3,555,969	3,469,236
Unearned income, net	(18,537)	(17,970)
Loans held for investment, net of unearned income	3,537,432	3,451,266
Allowance for credit losses	(58,500)	(29,079)
Total loans held for investment, net	3,478,932	3,422,187
Premises and equipment, net	87,955	90,723
Goodwill	62,477	91,918
Other intangible assets, net	26,811	32,218
Foreclosed assets, net	724	3,706
Other assets	159,507	147,960
Total assets	5,330,708	4,653,573
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest bearing deposits	864,504	662,209
Interest bearing deposits	3,469,137	3,066,446
Total deposits	4,333,641	3,728,655
Short-term borrowings	183,893	139,349
Long-term debt	245,481	231,660
Other liabilities	68,612	44,927
Total liabilities	4,831,627	4,144,591
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 16,099,324 and 16,162,176	16,581	16,581
Additional paid-in capital	299,939	297,390
Retained earnings	175,017	201,105
Treasury stock at cost, 481,693 and 418,841 shares	(12,272)	(10,466)
Accumulated other comprehensive income	19,816	4,372
Total shareholders' equity	499,081	508,982
Total liabilities and shareholders' equity	$ 5,330,708	$ 4,653,573

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
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)	16,099,324	16,162,176
Treasury stock (in shares)	481,693	418,841

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest income
Loans, including fees	$ 38,191	$ 49,169	$ 120,417	$ 118,257
Taxable investment securities	4,574	3,376	12,937	9,592
Tax-exempt investment securities	2,360	1,401	5,730	4,231
Other	29	130	233	335
Total interest income	45,154	54,076	139,317	132,415
Interest expense
Deposits	5,296	8,238	19,654	21,676
Short-term borrowings	175	522	772	1,479
Long-term debt	1,874	2,058	4,964	5,194
Total interest expense	7,345	10,818	25,390	28,349
Net interest income	37,809	43,258	113,927	104,066
Credit loss expense	4,992	4,264	31,410	6,554
Net interest income after credit loss expense	32,817	38,994	82,517	97,512
Noninterest income
Investment services and trust activities	2,361	2,339	7,114	5,619
Service charges and fees	1,491	2,068	4,607	5,380
Card revenue	1,600	1,655	4,202	4,452
Loan revenue	3,252	991	6,285	2,032
Bank-owned life insurance	530	514	1,685	1,376
Insurance commissions	0	0	0	734
Investment securities gains, net	106	23	154	72
Other	230	414	3,947	2,545
Total noninterest income	9,570	8,004	27,994	22,210
Noninterest expense
Compensation and employee benefits	16,460	17,426	48,759	46,414
Occupancy expense of premises, net	2,278	2,294	6,872	6,300
Equipment	1,935	2,181	5,825	5,466
Legal and professional	1,184	1,996	4,101	6,252
Data processing	1,308	1,234	3,902	3,087
Marketing	857	1,167	2,829	2,642
Amortization of intangibles	1,631	2,583	5,407	3,965
FDIC insurance	470	(42)	1,363	762
Communications	428	489	1,334	1,208
Foreclosed assets, net	13	265	185	407
Goodwill impairment	31,500	0	31,500	0
Other	1,875	1,849	5,901	4,596
Total noninterest expense	59,939	31,442	117,978	81,099
(Loss) income before income tax expense	(17,552)	15,556	(7,467)	38,623
Income tax expense	2,272	3,256	2,620	8,364
Net (loss) income	$ (19,824)	$ 12,300	$ (10,087)	$ 30,259
Per common share information
Earnings (loss) - basic (in dollars per share)	$ (1.23)	$ 0.76	$ (0.63)	$ 2.10
Earnings (loss) - diluted (in dollars per share)	(1.23)	0.76	(0.63)	2.09
Dividends paid (in dollars per share)	$ 0.2200	$ 0.2025	$ 0.6600	$ 0.6075

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (19,824)	$ 12,300	$ (10,087)	$ 30,259
Unrealized gain from debt securities available for sale:
Unrealized net holding gains on debt securities available for sale arising during the period	1,726	1,999	21,917	11,904
Reclassification adjustment for gains included in net income	(106)	(19)	(154)	(68)
Income tax expense	(423)	(517)	(5,680)	(3,089)
Unrealized net gains on debt securities available for sale, net of reclassification adjustment	1,197	1,463	16,083	8,747
Unrealized gain (loss) from cash flow hedging instruments:
Unrealized net holding gains (losses) in cash flow hedging instruments arising during the period	8	0	(1,009)	0
Reclassification adjustment for net losses in cash flow hedging instruments included in income	88	0	145	0
Income tax (expense) benefit	(25)	0	225	0
Unrealized net gains (losses) on cash flow hedge instruments, net of reclassification adjustment	71	0	(639)	0
Other comprehensive income, net of tax	1,268	1,463	15,444	8,747
Comprehensive (loss) income	$ (18,556)	$ 13,763	$ 5,357	$ 39,006

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, 2018		$ 357,067			$ 12,463	$ 187,813	$ 168,951			$ (6,499)	$ (5,661)
Net (loss) income		7,285					7,285
Other comprehensive income		3,038									3,038
Release/lapse of restriction on RSUs		(69)				(570)				501
Repurchase of common stock		(1,299)								(1,299)
Share-based compensation		292				292
Dividends paid on common stock		(2,465)					(2,465)
Ending balance at Mar. 31, 2019		363,849			12,463	187,535	173,771			(7,297)	(2,623)
Beginning balance at Dec. 31, 2018		357,067			12,463	187,813	168,951			(6,499)	(5,661)
Net (loss) income		30,259
Other comprehensive income		8,747
Ending balance at Sep. 30, 2019		497,885			16,581	297,144	191,007			(9,933)	3,086
Beginning balance at Mar. 31, 2019		363,849			12,463	187,535	173,771			(7,297)	(2,623)
Issuance of common stock due to business combination		113,346			4,118	109,228
Net (loss) income		10,674					10,674
Other comprehensive income		4,246									4,246
Release/lapse of restriction on RSUs		(19)				(196)				177
Repurchase of common stock		(1,596)								(1,596)
Share-based compensation		312				312
Dividends paid on common stock		(2,461)					(2,461)
Ending balance at Jun. 30, 2019		488,351			16,581	296,879	181,984			(8,716)	1,623
Issuance of common stock due to business combination		8				8
Net (loss) income		12,300					12,300
Other comprehensive income		1,463									1,463
Repurchase of common stock		(1,217)								(1,217)
Share-based compensation		257				257
Dividends paid on common stock		(3,277)					(3,277)
Ending balance at Sep. 30, 2019		497,885			16,581	297,144	191,007			(9,933)	3,086
Beginning balance at Dec. 31, 2019		508,982	$ (5,362)		16,581	297,390	201,105	$ (5,362)		(10,466)	4,372
Net (loss) income		(1,975)					(1,975)
Other comprehensive income		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
Beginning balance at Dec. 31, 2019		508,982	$ (5,362)		16,581	297,390	201,105	$ (5,362)		(10,466)	4,372
Net (loss) income		(10,087)
Other comprehensive income		15,444
Ending balance at Sep. 30, 2020		499,081			16,581	299,939	175,017			(12,272)	19,816
Beginning balance at Mar. 31, 2020		500,564			16,581	299,412	190,212			(12,518)	6,877
Net (loss) income		11,712					11,712
Other comprehensive income		11,671									11,671
Release/lapse of restriction on RSUs		(12)				(258)				246
Share-based compensation		388				388
Dividends paid on common stock		(3,542)					(3,542)
Ending balance at Jun. 30, 2020		520,781			16,581	299,542	198,382			(12,272)	18,548
Net (loss) income		(19,824)					(19,824)
Other comprehensive income		1,268									1,268
Release/lapse of restriction on RSUs		0				0
Repurchase of common stock		0
Share-based compensation		397				397
Dividends paid on common stock		(3,541)					(3,541)
Ending balance at Sep. 30, 2020		$ 499,081			$ 16,581	$ 299,939	$ 175,017			$ (12,272)	$ 19,816
[1]	Reclassification pursuant to adoption of ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. See Note 2. Effect of New Financial Accounting Standards for additional information.
[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. See Note 6. Goodwill and Intangible Assets for additional information.

Consolidated Statements of Sh_2

Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Release/lapse of restriction on RSUs (in shares)	0	9,542	22,946		8,260	24,550
Repurchase of common stock (in shares)	0		95,340	41,426	56,985	49,216
Dividends paid on common stock (in dollars per share)	$ 0.2200	$ 0.22	$ 0.22	$ 0.2025	$ 0.2025	$ 0.2025
Common Stock
Issuance of common stock due to business combination (in shares)					4,117,536
Additional Paid-in Capital
Expenses incurred in stock issuance					$ 323
ATBancorp
Goodwill adjustments			$ 2,060
Deferred income taxes			$ 296

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (19,824)	$ 12,300	$ (10,087)	$ 30,259
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Credit loss expense	4,992	4,264	31,410	6,554
Goodwill impairment	31,500	0	31,500	0
Depreciation, amortization, and accretion			4,054	8,877
Net loss on sale of premises and equipment			55	55
Share-based compensation			1,131	861
Net gain on sale or call of debt securities available for sale			(132)	(68)
Net gain on call of debt securities held to maturity			0	(4)
Net (gain) loss on sale of foreclosed assets, net			(39)	25
Writedown of foreclosed assets			164	170
Net gain on sale of loans held for sale			(5,519)	(1,553)
Origination of loans held for sale			(286,551)	(87,369)
Proceeds from sales of loans held for sale			284,374	83,030
Increase in cash surrender value of bank-owned life insurance			(1,317)	(1,376)
(Increase) decrease in deferred income taxes, net			(7,105)	752
Change in:
Other assets			(8,393)	9,222
Other liabilities			8,495	(10,016)
Net cash provided by operating activities			42,040	39,419
Cash flows from investing activities:
Proceeds from sales of debt securities available for sale			27,020	125,433
Proceeds from maturities and calls of debt securities available for sale			169,210	66,940
Purchases of debt securities available for sale			(746,101)	(170,660)
Proceeds from sales of debt securities held to maturity			0	1,381
Proceeds from maturities and calls of debt securities held to maturity			0	4,540
Net (increase) decrease in loans held for investment				4,043
Net (increase) decrease in loans held for investment			(81,867)
Purchases of premises and equipment			(1,514)	(1,242)
Proceeds from sale of foreclosed assets			2,922	1,321
Proceeds from sale of premises and equipment			49	312
Net cash acquired in business acquisition			0	37,054
Proceeds from sale of intangible assets			0	99
Net cash (used in) provided by investing activities			(630,281)	69,221
Cash flows from financing activities:
Deposits			604,699	17,688
Short-term borrowings			44,544	(37,082)
Proceeds from issuance of subordinated debt			65,000	0
Payments of subordinated debt issuance costs			(1,248)	0
Payments on finance lease liability	(32)	(28)	(94)	(83)
Proceeds from Federal Home Loan Bank borrowings			0	31,400
Payments of Federal Home Loan Bank borrowings			(44,400)	(94,400)
Proceeds from other long-term debt			0	35,000
Payments of other long-term debt			(5,500)	(7,250)
Taxes paid relating to the release/lapse of restriction on RSUs			(139)	(88)
Dividends paid			(10,639)	(8,203)
Payment of stock issuance costs			0	(323)
Repurchase of common stock			(2,604)	(4,112)
Net cash provided by (used in) financing activities			649,619	(67,453)
Net increase in cash and cash equivalents			61,378	41,187
Cash and cash equivalents:
Beginning of Period			73,484	45,480
Ending balance	134,862	86,667	134,862	86,667
Supplemental disclosures of cash flow information:
Cash paid during the period for interest			25,478	26,910
Cash paid during the period for income taxes			8,970	1,915
Supplemental schedule of non-cash investing and financing activities:
Transfer of loans to foreclosed assets, net			65	2,256
Investment securities purchased but not settled			10,690	0
Initial recognition of operating lease right of use asset	3,860		3,860
Initial recognition of operating lease liability	4,830		4,830
Noncash assets acquired:
Goodwill	62,477		62,477
ATBancorp
Noncash assets acquired:
Debt securities available for sale	0	99,056	0	99,056
Loans	0	1,138,928	0	1,138,928
Premises and equipment	0	18,623	0	18,623
Goodwill	0	28,604	0	28,604
Bank-owned life insurance	0	18,759	0	18,759
Foreclosed assets	0	3,091	0	3,091
Other assets	0	20,677	0	20,677
Total noncash assets acquired			0	1,355,562
Liabilities assumed:
Deposits	0	1,079,094	0	1,079,094
Short-term borrowings	0	100,761	0	100,761
FHLB borrowings	0	42,770	0	42,770
Junior subordinated notes issued to capital trusts	0	17,555	0	17,555
Subordinated debentures	0	10,909	0	10,909
Other liabilities	0	27,850	0	27,850
Total liabilities assumed			0	1,278,939
ATBancorp | Core deposit intangible
Noncash assets acquired:
Core deposit intangible	0	23,539	0	23,539
ATBancorp | Trust customer list intangible
Noncash assets acquired:
Core deposit intangible	$ 0	$ 4,285	$ 0	$ 4,285

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
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. The Company previously owned all of the common stock of MidWest One Insurance Services, Inc., Oskaloosa, Iowa, until that entity dissolved in December 2019. We operate primarily through MidWest One Bank, our bank subsidiary. On May 1, 2019, the Company acquired ATBancorp, a bank holding company whose wholly-owned banking subsidiaries were ATSB and ABTW, community banks headquartered in Dubuque, Iowa, and Cuba City, Wisconsin, respectively. As consideration for the merger, we issued 4,117,536 shares of our common stock with a value of $116 million, and paid cash in the amount of $34.8 million. On June 30, 2019, the Company sold substantially all of the assets used by its wholly owned subsidiary, MidWest One Insurance Services, Inc. to sell insurance products. The Company recognized a pre-tax gain of $1.1 million from the sale, which was reported in “Other” noninterest income on the Company’s consolidated statements of income. 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, 2019, filed with the SEC on March 6, 2020. 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 cushion the economic fallout. Most notably, the CARES Act was signed into law at the end of March 2020 as a $2 trillion legislative package. The goal of the CARES Act was to prevent a severe economic downturn through various measures, including direct financial aid to American families and economic stimulus to significantly impacted industry sectors. The package also includes extensive emergency funding for hospitals and healthcare providers. 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. 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 resulting measures to curtail its spread, 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 the breadth of the economic impact of COVID-19 may affect its borrowers’ ability to repay in future periods. The Company’s fee income could be reduced due to COVID-19. In keeping with guidance from regulators, the Company continues to actively work with COVID-19 affected customers. During the second and third quarters of 2020, we waived fees from a variety of sources, such as, but not limited to, insufficient funds and overdraft fees, ATM fees, account maintenance fees, etc. These reductions in fees are thought, at this time, to be temporary in conjunction with the length of the expected COVID-19 related economic crisis. At this time, the Company is unable to project the materiality of such an impact, but recognizes the breadth of the economic impact of COVID-19 is likely to impact its fee income 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. On July 28, 2020, the Company completed the private placement of $65.0 million of its subordinated notes. The 5.75% fixed-to-floating rate subordinated notes are due July 30, 2030. For regulatory capital purposes, the subordinated notes have been structured to qualify initially as Tier 2 Capital for the Company. 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 are 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. In the third quarter 2020, due to the continued economic impact that COVID-19 has had on the Company, management concluded that factors, such as the decline in macroeconomic conditions and a sustained decrease in share price, have led to the occurrence of a triggering event and therefore an interim impairment test over goodwill was performed as of September 30, 2020. Based upon the interim impairment assessment, we concluded that a portion of our goodwill was impaired as our estimated fair value was less than our book value on this date. The Company recorded a goodwill impairment charge of $31.5 million, which was reflected within "Noninterest expense" in the Consolidated Statements of Income. See Note 6. Goodwill and Intangible Assets for additional information. Processes, controls and business continuity plan The Company maintains a Business Continuity Plan, which was enacted upon the World Health Organization declaration of COVID-19 to be a global pandemic. Shortly after enacting the plan, the Company deployed a successful remote working strategy. The Company also implemented a number of other safety protocols, as well as initiated strategies for monitoring and responding to COVID-19 in our market areas, including customer relief efforts. As of September 30, 2020, the majority of our employees have returned to work in our branch offices with no disruption to our operations. To date, no material operational or internal control challenges or risks have been identified. We have also not incurred additional material cost related to our remote working strategy to date, nor do we anticipate incurring material cost in future periods. Further, as of September 30, 2020 the Company also does not anticipate significant challenges in its ability to maintain its systems and controls in light of the measures the Company has taken to prevent the spread of COVID-19. The Company does not currently face any material resource constraint through the implementation of its business continuity plans. 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 virus, the Company is engaging in more frequent communication with borrowers to better understand their situation 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 at future measurement 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 nine months ended September 30, 2020 may not be indicative of results for the year ending December 31, 2020, 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, 2019, filed with the SEC on March 6, 2020. 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 investment management 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. Allowance for Credit Losses Debt Securities Available for Sale For available for sale debt securities in an unrealized loss position, the Company evaluates the securities to determine whether the decline in the fair value below the amortized cost basis (impairment) is due to credit-related factors or noncredit-related factors. Any impairment that is not credit related is recognized in other comprehensive income, net of applicable taxes. Credit-related impairment is recognized as an allowance for credit losses related to debt securities AFS on the balance sheet, limited to the amount by which the amortized cost basis exceeds the fair value, with a corresponding adjustment to earnings. Both the ACL and the adjustment to net income may be reversed if conditions change. However, if the Company intends to sell an impaired available for sale debt security or more likely than not will be required to sell such a security before recovering its amortized cost basis, the entire impairment amount must be recognized in earnings with a corresponding adjustment to the security’s amortized cost basis. Because the security’s amortized cost basis is adjusted to fair value, there is no ACL in this situation. In evaluating available for sale debt securities in unrealized loss positions for impairment and the criteria regarding its intent or requirement to sell such securities, the Company considers the extent to which fair value is less than amortized cost, whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuers’ financial condition, among other factors. Changes in the allowance for credit losses are recorded as credit loss expense (or reversal of credit loss expense). Losses are charged against the ACL when management believes the uncollectability of an available for sale debt security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable is excluded from the estimate of credit losses. Loans Held for Investment Under the current expected credit loss model, the allowance for credit losses is a valuation account estimated at each balance sheet date and deducted from the amortized cost basis of loans held for investment to present the net amount expected to be collected. The Company estimates the ACL based on the underlying assets’ amortized cost basis, which is the amount at which the financing receivable is originated or acquired, adjusted for collection of cash and charge-offs, as well as applicable accretion or amortization of premium, discount, and net deferred fees or costs. In the event that collection of principal becomes uncertain, the Company has policies in place to reverse accrued interest in a timely manner. Therefore, the Company has made a policy election to exclude accrued interest from the measurement of ACL. Expected credit losses are reflected in the allowance for credit losses through a charge to credit loss expense. When the Company deems all or a portion of a financial asset to be uncollectible, the appropriate amount is written off and the ACL is reduced by the same amount. The Company applies judgment to determine when a financial asset is deemed uncollectible; however, generally speaking, an asset will be considered uncollectible no later than when all efforts at collection have been exhausted. Subsequent recoveries, if any, are credited to the ACL when received. The Company measures expected credit losses of financial assets on a collective (pool) basis when the financial assets share similar risk characteristics. Depending on the nature of the pool of financial assets with similar risk characteristics, the Company uses a DCF method or a loss-rate method to estimate expected credit losses. The Company’s methodologies for estimating the ACL consider available relevant information about the collectability of cash flows, including information about past events, current conditions, and reasonable and supportable forecasts. The methodologies apply historical loss information, adjusted for asset-specific characteristics, economic conditions at the measurement date, and forecasts about future economic conditions expected to exist through the contractual lives of the financial assets that are reasonable and supportable, to the identified pools of financial assets with similar risk characteristics for which the historical loss experience was observed. The Company’s methodologies revert back to historical loss driver information on a straight-line basis over four quarters when it can no longer develop reasonable and supportable forecasts. The Company adjusted in the first quarter of 2020 the reversion period from the previously disclosed six quarters to four quarters based upon current forecasted conditions. Discounted Cash Flow Method The Company uses the DCF method to estimate expected credit losses for the agricultural, commercial and industrial, CRE - construction and development, CRE - farmland, CRE - multifamily, CRE - other, RRE - owner-occupied one-to-four family first liens, RRE - nonowner-occupied one-to-four family first liens, RRE - one-to-four family junior liens, and consumer loan pools. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The Company uses regression analysis of historical internal and peer data to determine which variables are best suited to be economic variables utilized when modeling lifetime probability of default and loss given default. This analysis also determines how expected probability of default and loss given default will react to forecasted levels of the economic variables. For the loan pools utilizing the DCF method, management utilizes one or multiple of the following economic variables: Midwest unemployment, national retail sales, CRE index, US rental vacancy rate, US gross domestic product, and national home price index (HPI). For all DCF models, management has determined that four quarters represents a reasonable and supportable forecast period and reverts back to a historical loss rate over four quarters on a straight-line basis. Management leverages economic projections from a reputable and independent third party to inform its loss driver forecasts over the four quarter forecast period. Other internal and external indicators of economic forecasts are also considered by management when developing the forecast metrics. The combination of adjustments for credit expectations (default and loss) and timing expectations (prepayment, curtailment, and time to recovery) produces an expected cash flow stream at the instrument level. Instrument effective yield is calculated, net of the impacts of prepayment assumptions, and the instrument expected cash flows are then discounted at that effective yield to produce an instrument-level net present value of expected cash flows (“NPV”). An ACL is established for the difference between the instrument’s NPV and amortized cost basis. In addition, management utilizes qualitative factors to adjust the calculated ACL as appropriate. Qualitative factors are based on management's judgment of company, market, industry or business specific data, changes in underlying loan composition of specific portfolios, trends relating to credit quality, delinquency, non-performing and adversely rated loans, and reasonable and supportable forecasts of economic conditions. Loss-Rate Method The Company uses a loss-rate method to estimate expected credit losses for the credit card and overdraft pools. For each of these pools, the Company applies an expected loss ratio based on internal and peer historical losses, adjusted as appropriate for qualitative factors. Qualitative loss factors are based on management's judgment of company, market, industry or business specific data, changes in underlying loan composition of specific portfolios, trends relating to credit quality, delinquency, non-performing and adversely rated loans, and reasonable and supportable forecasts of economic conditions. Collateral Dependent Financial Assets Loans that do not share risk characteristics are evaluated on an individual basis. For collateral dependent financial assets where the Company has determined that foreclosure of the collateral is probable, or where the borrower is experiencing financial difficulty and the Company expects repayment of the financial asset to be provided substantially through the operation or sale of the collateral, the ACL is measured based on the difference between the fair value of the collateral and the amortized cost basis of the asset as of the measurement date. When repayment is expected to be from the operation of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the financial asset exceeds the present value of expected cash flows from the operation of the collateral. When repayment is expected to be from the sale of the collateral, expected credit losses are calculated as the amount by which the amortized costs basis of the financial asset exceeds the fair value of the underlying collateral less estimated cost to sell. The ACL may be zero if the fair value of the collateral at the measurement date exceeds the amortized cost basis of the financial asset. The Company’s estimate of the ACL reflects losses expected over the remaining contractual life of the assets. The contractual term does not consider extensions, renewals or modifications unless the Company has identified an expected TDR. A loan that has been modified or renewed is considered a TDR when two conditions are met: 1) the borrower is experiencing financial difficulty and 2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics. The Company’s ACL reflects all effects of a TDR when an individual asset is specifically identified as a reasonably expected TDR. The Company has determined that a TDR is reasonably expected no later than the point when the lender concludes that modification is the best course of action and it is at least reasonably possible that the troubled borrower will accept some form of concession from the lender to avoid a default. Reasonably expected TDRs and executed non-performing TDRs are evaluated individually to determine the required ACL. TDRs performing in accordance with their modified contractual terms for a reasonable period of time may be included in the Company’s existing pools based on the underlying risk characteristics of the loan to measure the ACL. Guidance on Non-TDR Loan Modifications due to COVID-19 Section 4013 of the CARES Act, “Temporary Relief From Troubled Debt Restructurings,” allows financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. Under Section 4013 of the CARES Act, loan modifications that qualify for such suspension are those where the borrower was not more than 30 days past due as of December 31, 2019. In addition, the loan modification being made in response to the COVID-19 pandemic must include a deferral or delay in the payment of principal or interest, or change in the interest rate on the loan. In March 2020, various regulatory agencies, including the FRB and the FDIC, issued an interagency statement, effective immediately, on loan modifications and reporting for financial institutions working with customers affected by COVID-19. The agencies confirmed with the staff of the FASB that short-term modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief, are not to be considered TDRs. This includes short-term (e.g., six months) modifications, such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. Liability for Off-Balance Sheet Credit Losses Financial instruments include off-balance sheet credit losses, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for off-balance sheet loan commitments is represented by the contractual amount of those instruments. Such financial instruments are recorded when they are funded.

Effect of New Financial Account

Effect of New Financial Accounting Standards	9 Months Ended
	Sep. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards Accounting Guidance Adopted in 2020 On January 1, 2020, the Company adopted ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables. It is also applied to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, ASC 326 made changes to the accounting for AFS debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on AFS debt securities that management does not intend to sell or believes that it is more likely than not they will be required to sell. The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326, while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a net decrease to retained earnings of $5.4 million as of January 1, 2020 for the cumulative effect of adopting ASC 326. The transition adjustment includes a $4.0 million impact due to the increase in ACL related to loans, a $3.4 million impact due the establishment of the allowance for unfunded commitments, and a $1.9 million impact on deferred taxes. The Company adopted ASC 326 using the prospective transition approach for financial assets purchased with credit deterioration that were previously classified as PCI and accounted for under ASC 310-30. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. On January 1, 2020, the amortized cost basis of the PCD assets were adjusted to reflect the addition of $119 thousand to the ACL. The remaining noncredit discount will be accreted into interest income at the effective interest rate as of January 1, 2020. The following table illustrates the impact of ASC 326 on the allowance for credit losses on loans and the liability for off-balance sheet credit exposures: January 1, 2020 Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported Under ASC 326 (in thousands) Assets: Loans Agricultural $ 3,748 $ (2,557) $ 1,191 Commercial and industrial 8,394 2,728 11,122 Commercial real estate 13,804 1,300 15,104 Residential real estate 2,685 2,050 4,735 Consumer 448 463 911 Allowance for credit losses on loans $ 29,079 $ 3,984 $ 33,063 Liabilities: Liability for off-balance sheet credit exposures $ — $ 3,433 $ 3,433 In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. The amendments in this update modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, including the consideration of costs and benefits. Four disclosure requirements were removed, three were modified, and two were added. In addition, the amendments eliminate “ at a minimum” from the phrase “ an entity shall disclose at a minimum” to promote the appropriate exercise of discretion by entities when considering fair value measurement disclosures and to clarify that materiality is an appropriate consideration of entities and their auditors when evaluating disclosure requirements. The amendments in this update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. 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	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 (in thousands) Amortized Gross Gross Allowance for Credit Loss related to Debt Securities Estimated Fair Value U.S. Government agencies and corporations $ 378 $ 8 $ — $ — $ 386 State and political subdivisions 499,922 11,875 1,314 — 510,483 Mortgage-backed securities 106,997 1,759 123 — 108,633 Collateralized mortgage obligations 395,772 7,599 478 — 402,893 Corporate debt securities 335,596 8,928 575 — 343,949 Total debt securities $ 1,338,665 $ 30,169 $ 2,490 $ — $ 1,366,344 As of December 31, 2019 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. Government agencies and corporations $ 439 $ 2 $ — $ 441 State and political subdivisions 253,750 3,803 348 257,205 Mortgage-backed securities 43,009 536 15 43,530 Collateralized mortgage obligations 293,911 1,000 1,965 292,946 Corporate debt securities 188,952 3,018 115 191,855 Total debt securities $ 780,061 $ 8,359 $ 2,443 $ 785,977 Investment securities with a carrying value of $434.5 million and $264.8 million at September 30, 2020 and December 31, 2019, 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 September 30, 2020, aggregated by investment category and length of time in a continuous loss position: As of September 30, 2020 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 68 $ 90,190 $ 1,314 $ — $ — $ 90,190 $ 1,314 Mortgage-backed securities 7 25,209 123 16 — 25,225 123 Collateralized mortgage obligations 5 60,760 249 9,444 229 70,204 478 Corporate debt securities 18 44,417 488 1,316 87 45,733 575 Total 98 $ 220,576 $ 2,174 $ 10,776 $ 316 $ 231,352 $ 2,490 As of September 30, 2020, 68 state and political subdivisions securities with total unrealized losses of $1.3 million were held by the Company. Management evaluated these securities by considering the yield spread to treasury securities, credit agency ratings, and payment history. In addition, management evaluated the most recent financial information available for certain of these securities. Based on this evaluation, management concluded that the decline in fair value was not attributable to credit losses. As of September 30, 2020, 7 mortgage-backed securities and 5 collateralized mortgage obligations with unrealized losses totaling $0.6 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 September 30, 2020, 18 corporate debt securities with total unrealized losses of $0.6 million were held by the Company. Management evaluated these securities by considering credit agency ratings and payment history. In addition, management evaluated the most recent financial information available for certain of these securities. 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 $6.1 million at September 30, 2020 and is excluded from the estimate of credit losses. The following table presents information pertaining to debt securities with gross unrealized losses as of December 31, 2019, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of December 31, 2019 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 47 $ 27,161 $ 322 $ 2,112 $ 26 $ 29,273 $ 348 Mortgage-backed securities 7 963 12 1,365 3 2,328 15 Collateralized mortgage obligations 33 103,395 719 65,604 1,246 168,999 1,965 Corporate debt securities 7 7,012 14 8,788 101 15,800 115 Total 94 $ 138,531 $ 1,067 $ 77,869 $ 1,376 $ 216,400 $ 2,443 Proceeds and gross realized gains and losses on debt securities available for sale for the three months and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended (in thousands) September 30, 2020 September 30, 2019 September 30, 2020 September 30, 2019 Proceeds from sales of debt securities available for sale $ 4,885 $ 19 $ 27,020 $ 125,433 Gross realized gains from sales of debt securities available for sale 105 18 255 124 Gross realized losses from sales of debt securities available for sale (10) (1) (123) (56) Net realized gain from sales of debt securities available for sale $ 95 $ 17 $ 132 $ 68 The contractual maturity distribution of investment debt securities at September 30, 2020, 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 $ 52,185 $ 52,578 Due after one year through five years 252,498 260,915 Due after five years through ten years 220,385 225,480 Due after ten years 310,828 315,845 $ 835,896 $ 854,818 Mortgage-backed securities 106,997 108,633 Collateralized mortgage obligations 395,772 402,893 Total $ 1,338,665 $ 1,366,344

Loans Receivable and the Allowa

Loans Receivable and the Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2020
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) September 30, 2020 December 31, 2019 Agricultural $ 129,453 $ 140,446 Commercial and industrial 1,103,102 835,236 Commercial real estate: Construction & development 191,423 298,077 Farmland 152,362 181,885 Multifamily 235,241 227,407 Commercial real estate-other 1,128,009 1,107,490 Total commercial real estate 1,707,035 1,814,859 Residential real estate: One- to four- family first liens 371,390 407,418 One- to four- family junior liens 150,180 170,381 Total residential real estate 521,570 577,799 Consumer 76,272 82,926 Loans held for investment, net of unearned income 3,537,432 3,451,266 Allowance for credit losses (58,500) (29,079) Total loans held for investment, net $ 3,478,932 $ 3,422,187 Loans with unpaid principal in the amount of $858.1 million and $945.9 million at September 30, 2020 and December 31, 2019, 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. As of September 30, 2020, the Company had no commitments to lend additional funds to borrowers who have a nonaccrual loan. 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 September 30, 2020 Agricultural $ 127,448 $ 390 $ 339 $ 1,276 $ 129,453 $ — Commercial and industrial 1,098,272 1,027 105 3,698 1,103,102 5 Commercial real estate: Construction and development 188,115 1,774 825 709 191,423 — Farmland 142,470 114 353 9,425 152,362 — Multifamily 235,241 — — — 235,241 — Commercial real estate-other 1,121,100 996 3 5,910 1,128,009 — Total commercial real estate 1,686,926 2,884 1,181 16,044 1,707,035 — Residential real estate: One- to four- family first liens 364,393 1,856 1,271 3,870 371,390 2,588 One- to four- family junior liens 149,374 603 46 157 150,180 — Total residential real estate 513,767 2,459 1,317 4,027 521,570 2,588 Consumer 76,078 78 23 93 76,272 — Total $ 3,502,491 $ 6,838 $ 2,965 $ 25,138 $ 3,537,432 $ 2,593 December 31, 2019 Agricultural $ 137,715 $ 975 $ — $ 1,756 $ 140,446 $ — Commercial and industrial 828,842 846 270 5,278 835,236 — Commercial real estate: Construction and development 294,995 2,256 621 205 298,077 — Farmland 175,281 362 — 6,242 181,885 — Multifamily 227,013 394 — — 227,407 — Commercial real estate-other 1,102,504 1,965 347 2,674 1,107,490 — Total commercial real estate 1,799,793 4,977 968 9,121 1,814,859 — Residential real estate: One- to four- family first liens 402,471 2,579 857 1,511 407,418 99 One- to four- family junior liens 169,592 518 108 163 170,381 25 Total residential real estate 572,063 3,097 965 1,674 577,799 124 Consumer 82,558 150 80 138 82,926 12 Total $ 3,420,971 $ 10,045 $ 2,283 $ 17,967 $ 3,451,266 $ 136 The following table presents the amortized cost basis of loans on non-accrual status, loans past due 90 days or more and still accruing by class of loan and related interest income recognized: Three Months Ended September 30, Nine Months Ended September 30, (in thousands) Beginning of Period Nonaccrual End of Period Nonaccrual Nonaccrual with no Allowance for Credit Losses 90 Days or More Past Due And Accruing Interest Income Recognized on Nonaccrual Interest Income Recognized on Nonaccrual As of and for the Three and Nine Months Ended September 30, 2020 Agricultural $ 2,894 $ 2,787 $ 1,576 $ — $ 14 $ 94 Commercial and industrial 13,276 8,725 4,825 5 49 150 Commercial real estate: Construction and development 1,494 1,387 1,007 — 5 46 Farmland 10,402 13,693 12,385 — 23 116 Multifamily — — — — — 1 Commercial real estate-other 10,141 9,783 2,850 — 8 32 Total commercial real estate 22,037 24,863 16,242 — 36 195 Residential real estate: One- to four- family first liens 2,557 1,999 207 2,588 21 62 One- to four- family junior liens 513 552 1 — 9 16 Total residential real estate 3,070 2,551 208 2,588 30 78 Consumer 206 145 13 — 1 9 Total $ 41,483 $ 39,071 $ 22,864 $ 2,593 $ 130 $ 526 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, loans greater than 90 days past due and on accrual, and TDRs 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 September 30, 2020. As of September 30, 2020, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans September 30, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Total Agricultural Pass $ 18,711 $ 9,402 $ 3,467 $ 2,612 $ 1,607 $ 2,392 $ 66,182 $ 104,373 Special mention / watch 5,268 1,456 125 113 593 1,110 7,885 16,550 Substandard 3,830 874 272 187 130 227 3,009 8,529 Doubtful — — — — — 1 — 1 Total $ 27,809 $ 11,732 $ 3,864 $ 2,912 $ 2,330 $ 3,730 $ 77,076 $ 129,453 Commercial and industrial Pass $ 552,011 $ 113,602 $ 61,017 $ 71,706 $ 40,276 $ 96,039 $ 130,932 $ 1,065,583 Special mention / watch 3,770 679 1,437 2,395 869 1,272 6,065 16,487 Substandard 3,846 1,651 609 841 538 4,301 9,242 21,028 Doubtful — — — 1 — 2 1 4 Total $ 559,627 $ 115,932 $ 63,063 $ 74,943 $ 41,683 $ 101,614 $ 146,240 $ 1,103,102 CRE - Construction and development Pass $ 86,471 $ 47,688 $ 20,154 $ 4,356 $ 929 $ 1,165 $ 21,666 $ 182,429 Special mention / watch 4,570 461 546 — 11 33 — 5,621 Substandard 1,053 1,497 220 — — 38 565 3,373 Doubtful — — — — — — — — Total $ 92,094 $ 49,646 $ 20,920 $ 4,356 $ 940 $ 1,236 $ 22,231 $ 191,423 CRE - Farmland Pass $ 39,115 $ 28,158 $ 11,528 $ 11,938 $ 8,493 $ 16,116 $ 1,740 $ 117,088 Special mention / watch 7,976 4,709 1,040 667 1,212 239 353 16,196 Substandard 2,656 4,163 4,509 1,729 204 5,767 50 19,078 Doubtful — — — — — — — — Total $ 49,747 $ 37,030 $ 17,077 $ 14,334 $ 9,909 $ 22,122 $ 2,143 $ 152,362 CRE - Multifamily Pass $ 131,319 $ 18,505 $ 18,183 $ 17,687 $ 16,004 $ 21,446 $ 10,612 $ 233,756 Special mention / watch 346 — — — 70 — — 416 Substandard 1,069 — — — — — — 1,069 Doubtful — — — — — — — — Total $ 132,734 $ 18,505 $ 18,183 $ 17,687 $ 16,074 $ 21,446 $ 10,612 $ 235,241 CRE - other Pass $ 423,851 $ 130,751 $ 69,359 $ 90,154 $ 75,302 $ 104,107 $ 41,301 $ 934,825 Special mention / watch 79,206 16,202 12,061 4,865 4,054 4,159 885 121,432 Substandard 44,915 7,767 7,021 1,233 586 9,231 999 71,752 Doubtful — — — — — — — — Total $ 547,972 $ 154,720 $ 88,441 $ 96,252 $ 79,942 $ 117,497 $ 43,185 $ 1,128,009 RRE - One- to four- family first liens Performing $ 98,719 $ 54,993 $ 46,672 $ 41,713 $ 39,818 $ 75,091 $ 9,796 $ 366,802 Nonperforming 67 66 561 812 522 2,560 — 4,588 Total $ 98,786 $ 55,059 $ 47,233 $ 42,525 $ 40,340 $ 77,651 $ 9,796 $ 371,390 RRE - One- to four- family junior liens Performing $ 15,090 $ 8,971 $ 14,175 $ 6,994 $ 3,821 $ 6,773 $ 93,804 $ 149,628 Nonperforming — — — 32 117 233 170 552 Total $ 15,090 $ 8,971 $ 14,175 $ 7,026 $ 3,938 $ 7,006 $ 93,974 $ 150,180 Consumer Performing $ 21,940 $ 16,255 $ 12,000 $ 5,796 $ 3,033 $ 6,450 $ 10,653 $ 76,127 Nonperforming — 34 46 18 12 35 — 145 Total $ 21,940 $ 16,289 $ 12,046 $ 5,814 $ 3,045 $ 6,485 $ 10,653 $ 76,272 Term Loans by Origination Year Revolving Loans 2020 2019 2018 2017 2016 Prior Total Total by Credit Quality Indicator Category Pass $ 1,251,478 $ 348,106 $ 183,708 $ 198,453 $ 142,611 $ 241,265 $ 272,433 $ 2,638,054 Special mention / watch 101,136 23,507 15,209 8,040 6,809 6,813 15,188 176,702 Substandard 57,369 15,952 12,631 3,990 1,458 19,564 13,865 124,829 Doubtful — — — 1 — 3 1 5 Performing 135,749 80,219 72,847 54,503 46,672 88,314 114,253 592,557 Nonperforming 67 100 607 862 651 2,828 170 5,285 Total $ 1,545,799 $ 467,884 $ 285,002 $ 265,849 $ 198,201 $ 358,787 $ 415,910 $ 3,537,432 The following table sets forth the risk category of loans by class of loans and credit quality indicator used on the most recent analysis performed as of December 31, 2019: December 31, 2019 Pass Special Mention / Watch Substandard Doubtful Loss Total Agricultural $ 117,374 $ 13,292 $ 9,780 $ — $ — $ 140,446 Commercial and industrial 794,526 19,038 21,635 1 36 835,236 Commercial real estate: Construction and development 283,921 11,423 2,733 — — 298,077 Farmland 141,107 21,307 19,471 — — 181,885 Multifamily 226,124 90 1,193 — — 227,407 Commercial real estate-other 1,036,418 50,691 20,381 — — 1,107,490 Total commercial real estate 1,687,570 83,511 43,778 — — 1,814,859 Residential real estate: One- to four- family first liens 396,175 4,547 6,532 164 — 407,418 One- to four- family junior liens 168,229 1,282 870 — — 170,381 Total residential real estate 564,404 5,829 7,402 164 — 577,799 Consumer 82,650 39 218 19 — 82,926 Total $ 3,246,524 $ 121,709 $ 82,813 $ 184 $ 36 $ 3,451,266 Allowance for Credit Losses At September 30, 2020, the economic forecast used by the Company showed a decline in Midwest unemployment over the next four forecasted quarters; increases in national retail sales over the next three forecasted quarters, with a decline in the fourth quarter; decreases in the CRE index over the next two forecasted quarters, with improvements beginning in the third quarter; increases in U.S. GDP over the next three forecasted quarters, with a decline in the fourth quarter; decreases in the national home price index over the next three forecasted quarters, with improvements beginning in the fourth quarter; and a decline in the U.S. rental vacancy rate through the second forecasted quarter, with an improvement in the third forecasted quarter, and then a decline beginning in the fourth forecasted quarter. These loss drivers saw improvements when compared to the prior quarter, however are consistently worse when compared to recent historical trends over the past several years, largely as a result of the COVID-19 pandemic. 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 $14.8 million at September 30, 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 September 30, 2020 and 2019 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Three Months September 30, 2020 Beginning balance $ 1,408 $ 18,709 $ 28,221 $ 6,074 $ 1,232 $ 55,644 Charge-offs (746) (983) (275) (83) (101) (2,188) Recoveries 103 180 9 14 41 347 Credit loss expense (1) 649 (1,267) 2,966 2,273 76 4,697 Ending balance $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 For the Three Months Ended September 30, 2019 Beginning balance $ 3,720 $ 7,633 $ 13,655 $ 3,377 $ 306 $ 28,691 Charge-offs (986) (328) — (121) (200) (1,635) Recoveries 22 9 8 49 124 212 Credit loss expense 1,372 1,680 1,808 (742) 146 4,264 Ending balance $ 4,128 $ 8,994 $ 15,471 $ 2,563 $ 376 $ 31,532 For the Nine Months Ended September 30, 2020 and 2019 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Nine Months Ended September 30, 2020 Beginning balance, prior to adoption of ASC 326 $ 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 (939) (2,356) (1,787) (186) (520) (5,788) Recoveries 129 559 28 29 137 882 Credit loss expense (1) 1,033 7,314 17,576 3,700 720 30,343 Ending balance $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 For the Nine Months Ended September 30, 2019 Beginning balance $ 3,637 $ 7,478 $ 15,635 $ 2,349 $ 208 $ 29,307 Charge-offs (1,137) (2,441) (960) (171) (469) (5,178) Recoveries 31 158 272 67 321 849 Credit loss expense 1,597 3,799 524 318 316 6,554 Ending balance $ 4,128 $ 8,994 $ 15,471 $ 2,563 $ 376 $ 31,532 (1) The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss expense of $0.3 million and $1.1 million related to off-balance sheet credit exposures for the three months and nine months ended September 30, 2020, respectively. The composition of allowance for credit losses by portfolio segment based on evaluation method were as follows: As of September 30, 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 $ 2,161 $ 7,774 $ 23,412 $ 204 $ 7 $ 33,558 Collectively evaluated for impairment 127,292 1,095,328 1,683,623 521,366 76,265 3,503,874 Total $ 129,453 $ 1,103,102 $ 1,707,035 $ 521,570 $ 76,272 $ 3,537,432 Allowance for credit losses: Individually evaluated for impairment $ 55 $ 504 $ 675 $ — $ — $ 1,234 Collectively evaluated for impairment 1,359 16,135 30,246 8,278 1,248 57,266 Total $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 As of December 31, 2019 (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 $ 4,312 $ 12,242 $ 16,082 $ 838 $ 21 $ 33,495 Collectively evaluated for impairment 135,246 822,939 1,781,306 572,865 82,864 3,395,220 Purchased credit impaired loans 888 55 17,471 4,096 41 22,551 Total $ 140,446 $ 835,236 $ 1,814,859 $ 577,799 $ 82,926 $ 3,451,266 Allowance for loan losses: Individually evaluated for impairment $ 212 $ 2,198 $ 1,180 $ 73 $ — $ 3,663 Collectively evaluated for impairment 3,536 6,194 11,836 2,152 448 24,166 Purchased credit impaired loans — 2 788 460 — 1,250 Total $ 3,748 $ 8,394 $ 13,804 $ 2,685 $ 448 $ 29,079 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 September 30, 2020 Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 767 $ 741 $ 653 $ 2,161 $ 55 Commercial and industrial 682 4,151 2,941 7,774 504 Commercial real estate: Construction and development 1,006 — — 1,006 — Farmland 11,826 1,345 — 13,171 88 Multifamily — — — — — Commercial real estate-other 8,794 441 — 9,235 587 Residential real estate: One- to four- family first liens 204 — — 204 — One- to four- family junior liens — — — — — Consumer 7 — — 7 — Total $ 23,286 $ 6,678 $ 3,594 $ 33,558 $ 1,234 Troubled Debt Restructurings TDRs totaled $9.4 million and $11.0 million as of September 30, 2020 and December 31, 2019, respectively. 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 September 30, 2020 2019 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 - Interest rate reduction Commercial and industrial 1 $ 143 $ 143 — $ — $ — CONCESSION - Extended maturity date Agricultural — — — 7 341 341 Commercial and industrial — — — 1 1,863 1,863 Farmland — — — 1 158 158 One- to four- family first liens 1 128 132 — — — One- to four- family junior liens — — — 1 5 5 CONCESSION - Other Agricultural 1 59 69 — — — Farmland 1 150 161 — — — Total 4 $ 480 $ 505 10 $ 2,367 $ 2,367 Nine Months Ended September 30, 2020 2019 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 - Interest rate reduction Commercial and industrial 1 $ 143 $ 143 — $ — $ — CONCESSION - Extended maturity date Agricultural — — — 7 341 341 Commercial and industrial — — — 1 1,863 1,863 Farmland — — — 1 158 158 Commercial real estate-other 3 759 808 — — — One- to four- family first liens 3 274 278 3 240 239 One- to four- family junior liens — — — 3 81 81 CONCESSION - Other Agricultural 2 267 278 — — — Farmland 3 504 514 — — — Total 12 $ 1,947 $ 2,021 15 $ 2,683 $ 2,682 For the three months and nine months ended September 30, 2020, the Company had four TDRs, totaling $412 thousand that redefaulted within 12 months subsequent to restructure. These TDRs that redefaulted within 12 months subsequent to restructure consisted of the following for the three and nine months ended September 30, 2020: 1 agricultural contract totaling $59 thousand, 1 farmland contract totaling $150 thousand, and 2 one-to four-family first lien contracts totaling $203 thousand. For the three and nine months ended September 30, 2019, the Company had twelve TDRs, totaling $742 thousand that redefaulted within 12 months subsequent to restructure. These TDRs that redefaulted within 12 months subsequent to restructure consisted of the following for the three and nine months ended September 30, 2019: 6 agricultural contracts totaling $315 thousand, 1 farmland contract totaling $158 thousand, 3 one-to four-family first lien contracts totaling $239 thousand, and 2 one-to four-family junior lien contracts totaling $30 thousand. 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 along with a joint interagency statement issued by the federal banking agencies provides 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 September 30, 2020, we had granted short-term payment deferrals on $115.3 million of loans. The program is ongoing and additional loans continue to be granted deferrals. Pre-ASC 326 Adoption Impaired Loan Disclosures The following table presents loans individually evaluated for impairment by class of receivable as of December 31, 2019, which was prior to the adoption of ASC 326: December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Agricultural $ 2,383 $ 2,913 $ — Commercial and industrial 7,391 10,875 — Commercial real estate: Construction and development 1,181 1,218 — Farmland 4,306 4,331 — Multifamily — — — Commercial real estate-other 5,709 5,854 — Total commercial real estate 11,196 11,403 — Residential real estate: One- to four- family first liens 577 578 — One- to four- family junior liens — — — Total residential real estate 577 578 — Consumer 21 21 — Total $ 21,568 $ 25,790 $ — With an allowance recorded: Agricultural $ 1,929 $ 1,930 $ 212 Commercial and industrial 4,851 5,417 2,198 Commercial real estate: Construction and development 135 135 135 Farmland 1,109 1,148 347 Multifamily — — — Commercial real estate-other 3,642 4,229 698 Total commercial real estate 4,886 5,512 1,180 Residential real estate: One- to four- family first liens 261 262 73 One- to four- family junior liens — — — Total residential real estate 261 262 73 Consumer — — — Total $ 11,927 $ 13,121 $ 3,663 Total: Agricultural $ 4,312 $ 4,843 $ 212 Commercial and industrial 12,242 16,292 2,198 Commercial real estate: Construction and development 1,316 1,353 135 Farmland 5,415 5,479 347 Multifamily — — — Commercial real estate-other 9,351 10,083 698 Total commercial real estate 16,082 16,915 1,180 Residential real estate: One- to four- family first liens 838 840 73 One- to four- family junior liens — — — Total residential real estate 838 840 73 Consumer 21 21 — Total $ 33,495 $ 38,911 $ 3,663 The following table presents the average recorded investment and interest income recognized for loans individually evaluated for impairment by class of receivable, during the stated periods, which were prior to the adoption of ASC 326: Three Months Ended September 30, Nine Months Ended September 30, 2019 2019 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Agricultural $ 2,260 $ 11 $ 1,962 $ — Commercial and industrial 5,199 2 4,961 — Commercial real estate: Construction and development — — — — Farmland 2,410 — 1,710 — Multifamily — — — — Commercial real estate-other 1,541 7 1,361 20 Total commercial real estate 3,951 7 3,071 20 Residential real estate: One- to four- family first liens 347 — 260 — One- to four- family junior liens — — — — Total residential real estate 347 — 260 — Consumer 21 — 16 — Total $ 11,778 $ 20 $ 10,270 $ 20 With an allowance recorded: Agricultural $ 1,527 $ — $ 1,378 $ 31 Commercial and industrial 4,577 16 3,386 — Commercial real estate: Construction and development — — — — Farmland 649 — 586 5 Multifamily — — — — Commercial real estate-other 2,507 82 1,834 93 Total commercial real estate 3,156 82 2,420 98 Residential real estate: One- to four- family first liens 265 2 266 7 One- to four- family junior liens — — — — Total residential real estate 265 2 266 7 Consumer — — — — Total $ 9,525 $ 100 $ 7,450 $ 136 Total: Agricultural $ 3,787 $ 11 $ 3,340 $ 31 Commercial and industrial 9,776 18 8,347 — Commercial real estate: Construction and development — — — — Farmland 3,059 — 2,296 5 Multifamily — — — — Commercial real estate-other 4,048 89 3,195 113 Total commercial real estate 7,107 89 5,491 118 Residential real estate: One- to four- family first liens 612 2 526 7 One- to four- family junior liens — — — — Total residential real estate 612 2 526 7 Consumer 21 — 16 — Total $ 21,303 $ 120 $ 17,720 $ 156 Purchased Credit Impaired Loans (Pre-ASC 326 Adoption) The following table summarizes the outstanding balance and carrying amount of our PCI loans that were identified prior to the adoption of ASC 326: December 31, 2019 (in thousands) Agricultural $ 904 Commercial and industrial 147 Commercial real estate 17,803 Residential real estate 4,136 Consumer 57 Outstanding balance 23,047 Carrying amount 22,551 Allowance for credit losses 1,250 Carrying amount, net of allowance for credit losses $ 21,301

Derivatives, Hedging Activities

Derivatives, Hedging Activities and Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 As of December 31, 2019 Notional Amount Fair Value Notional Amount Fair Value (in thousands) Assets Liabilities Assets Liabilities Designated as hedging instruments Fair value hedges Interest rate swaps $ 25,744 $ — $ 2,926 $ 16,734 $ — $ 1,113 Cash flow hedges Interest rate swaps 30,000 — 864 — — — Total $ 55,744 $ — $ 3,790 $ 16,734 $ — $ 1,113 Not designated as hedging instruments: Interest rate swaps $ 342,670 $ 13,550 $ 13,692 $ 113,632 $ 1,824 $ 1,999 RPAs - protection sold 4,530 10 — 4,702 24 — RPAs - protection purchased 9,873 — 21 10,009 — 130 Total $ 357,073 $ 13,560 $ 13,713 $ 128,343 $ 1,848 $ 2,129 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 is designated as a cash flow hedge. The gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. During 2020, the Company estimates that an additional $358 thousand will be reclassified to interest expense. The table below presents the effect of cash flow hedge accounting on AOCI for three months and nine months ended September 30, 2020 and 2019. 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 September 30, Three Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps $ 8 $ — Interest Expense $ (88) $ — 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 Nine Months Ended September 30, Nine Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps $ (1,009) $ — Interest Expense $ (145) $ — 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 September 30, For the Nine Months Ended September 30, 2020 2019 2020 2019 (in thousands) Interest Income Interest Expense Interest Income Interest Expense Interest Income Interest Expense Interest Income Interest Expense 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 $ (102) $ — $ (1) $ — $ (229) $ — $ (2) $ — The effects of fair value and cash flow hedging: Gain (loss) on fair value hedging relationships in subtopic 815-20: Interest contracts: Hedged items (174) — 617 — 1,814 — 1,412 — Derivative designated as hedging instruments 180 (618) — (1,813) — (1,414) — Income statement effect of cash flow hedging relationships in subtopic 815-20: Interest contracts: Amount reclassified from AOCI into income — 88 — — — 145 — — As of September 30, 2020, 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 $ 28,679 $ 2,924 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 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 September 30, For the Nine Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps Other income $ (90) $ (96) $ 33 $ (226) RPAs Other income (3) (24) 94 (148) Total $ (93) $ (120) $ 127 $ (374) 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 following table below presents gross derivatives and the respective collateral received or pledged in the form of other financial instruments as of September 30, 2020 and December 31, 2019, 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 Pledged Net Assets (Liabilities) As of September 30, 2020 Asset Derivatives $ 13,560 $ — $ 13,560 $ — $ — $ 13,560 Liability Derivatives (17,503) — (17,503) — (17,503) — As of December 31, 2019 Asset Derivatives $ 1,848 $ — $ 1,848 $ — $ — $ 1,848 Liability Derivatives (3,242) — (3,242) — (3,242) — 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 September 30, 2020, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $17.7 million. As of September 30, 2020, the Company had minimum collateral posting thresholds with certain of its derivative counterparties and has posted $13.6 million of collateral related to these agreements. If the Company had breached any of these provisions at September 30, 2020, it could have been required to settle its obligations under the agreements at their termination value of $17.7 million.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill is the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations accounted for as acquisitions. Under ASC Topic 350, goodwill of a reporting unit is tested for impairment on an annual basis, or between annual tests if an event occurs or circumstances change that would reduce the fair value of a reporting unit below its carrying amount. The Company's annual assessment is done at the reporting unit level, which the Company has concluded is at the consolidated level. Due to the continued economic impact that COVID-19 has had on the Company, management concluded that factors, such as the decline in macroeconomic conditions and a sustained decrease in share price, have led to the occurrence of a triggering event and therefore an interim impairment test over goodwill was performed as of September 30, 2020. The Company performed a market capitalization approach, a guideline public company approach and a discounted cash flow approach, to determine the fair value of the Company. As a result of this interim assessment, the Company recorded a goodwill impairment charge of $31.5 million as its estimated fair value was less than its book value on that date. This non-cash charge was reflected within "Noninterest expense" in the Consolidated Statements of Income and had no impact on the Company's regulatory capital ratios, cash flows and liquidity position. The following table presents the changes in the carrying amount of goodwill for the period indicated: Nine Months Ended September 30, (in thousands) 2020 Goodwill, beginning of period $ 91,918 Fair value adjustment (1) 2,059 Goodwill impairment (31,500) Total goodwill, end of period $ 62,477 (1) Goodwill adjustments consisted of the ATBancorp acquisition purchase accounting adjustments, which were finalized in the first quarter of 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 September 30, 2020 As of December 31, 2019 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (25,208) $ 16,537 $ 41,745 $ (21,032) $ 20,713 Customer relationship intangible 5,265 (2,324) 2,941 5,265 (1,195) 4,070 Other 2,700 (2,407) 293 2,700 (2,305) 395 $ 49,710 $ (29,939) $ 19,771 $ 49,710 $ (24,532) $ 25,178 Indefinite-lived trade name intangible $ 7,040 $ 7,040 The following table provides the estimated future amortization expense for the remaining three months ending December 31, 2020 and the succeeding annual periods: Core Deposit Intangible Customer Relationship Intangible Other Total Estimated Remaining Amortization Expense for the Year Ending December 31, 2020 $ 1,231 $ 306 $ 31 $ 1,568 2021 4,190 1,062 106 5,358 2022 3,487 797 79 4,363 2023 2,833 518 51 3,402 2024 2,180 239 24 2,443 Thereafter 2,616 19 2 2,637 Total $ 16,537 $ 2,941 $ 293 $ 19,771

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2020
Other Assets [Abstract]
Other Assets	Other Assets The components of the Company's other assets as of September 30, 2020 and December 31, 2019 were as follows: (in thousands) September 30, 2020 December 31, 2019 Bank-owned life insurance $ 82,942 $ 81,625 Interest receivable 21,112 18,525 FHLB stock 12,246 15,381 Mortgage servicing rights 5,274 7,026 Operating lease right-of-use assets, net 3,860 4,499 Federal and state income taxes, current 725 2,318 Federal and state income taxes, deferred 7,413 3,530 Derivative assets 13,560 1,848 Other receivables/assets 12,375 13,208 $ 159,507 $ 147,960

Deposits

Deposits	9 Months Ended
	Sep. 30, 2020
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of our deposits as of the dates indicated: (in thousands) As of September 30, 2020 As of December 31, 2019 Noninterest bearing deposits $ 864,504 $ 662,209 Interest checking deposits 1,230,146 962,830 Money market deposits 871,336 763,028 Savings deposits 486,876 387,142 Time deposits under $250,000 617,229 682,232 Time deposits of $250,000 or more 263,550 271,214 Total deposits $ 4,333,641 $ 3,728,655 The Company had $6.2 million and $6.6 million in brokered time deposits through the CDARS program as of September 30, 2020 and December 31, 2019, respectively. Included in money market deposits at September 30, 2020 and December 31, 2019 were $16.1 million and $10.1 million, respectively, of brokered deposits through the ICS program. As of September 30, 2020 and December 31, 2019, the Company had public entity deposits that were collateralized by investment securities of $138.8 million and $96.6 million, respectively.

Short-Term Borrowings

Short-Term Borrowings	9 Months Ended
	Sep. 30, 2020
Short-term Debt [Abstract]
Short-Term Borrowings	Short-Term Borrowings The following table summarizes our short-term borrowings as of the dates indicated: September 30, 2020 December 31, 2019 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Securities sold under agreements to repurchase 0.35 % $ 183,893 1.06 % $ 117,249 Federal Home Loan Bank advances — — 1.73 22,100 Unsecured line of credit — — — — Total 0.35 % $ 183,893 1.17 % $ 139,349 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. 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. 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 September 30, 2020 or December 31, 2019. At September 30, 2020 and December 31, 2019, the Company had no Federal Reserve Discount Window borrowings, while the financing capacity was $67.9 million as of September 30, 2020 and $12.7 million as of December 31, 2019. As of September 30, 2020 and December 31, 2019, the Bank had municipal securities with a market value of $71.9 million and $13.0 million, respectively, pledged to the Federal Reserve Bank of Chicago to secure potential borrowings.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 ATBancorp Statutory Trust I $ 7,732 $ 6,841 Three-month LIBOR + 1.68% 1.93 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,836 Three-month LIBOR + 1.65% 1.90 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,758 Three-month LIBOR + 2.15% 2.37 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,820 Three-month LIBOR + 3.50% 3.75 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.84 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,719 December 31, 2019 ATBancorp Statutory Trust I $ 7,732 $ 6,814 Three-month LIBOR + 1.68% 3.57 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,794 Three-month LIBOR + 1.65% 3.54 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,732 Three-month LIBOR + 2.15% 4.08 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,783 Three-month LIBOR + 3.50% 5.39 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 3.48 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,587 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 on March 15th and September 15th. 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 September 30, 2020, we were permitted to treat 40% of the ATB Debentures as Tier 2 capital. Other Long-Term Debt Long-term borrowings were as follows as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Finance lease payable 8.89 % $ 1,130 8.89 % $ 1,224 FHLB borrowings 1.89 101,222 2.25 145,700 Notes payable to unaffiliated bank 1.91 26,750 3.44 32,250 Total 1.96 % $ 129,102 2.51 % $ 179,174 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 September 30, 2020, 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. On April 30, 2015, the Company entered into a $35.0 million unsecured note payable with a correspondent bank with a maturity date of June 30, 2020. The Company drew $25.0 million on the note prior to June 30, 2015, at which time the ability to obtain additional advances ceased. The note was paid off on June 30, 2020. On April 30, 2019, the Company entered into a $35.0 million unsecured note payable with a correspondent bank with a maturity date of April 30, 2024. Quarterly principal and interest payments began June 30, 2019 and, as of September 30, 2020, $26.8 million of that note was outstanding.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense (benefit) based on statutory rate for the three months and nine months ended September 30, 2020 and 2019 varied from the amount computed by applying the maximum effective federal income tax rate of 21%, to the income before income taxes, because of the following items: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2020 2019 2020 2019 (in thousands) Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income Income tax based on statutory rate $ (3,686) 21.0 % $ 3,267 21.0 % $ (1,568) 21.0 % $ 8,111 21.0 % Tax-exempt interest (801) 4.6 (791) (5.1) (2,147) 28.7 (1,732) (4.5) Bank-owned life insurance (111) 0.6 (108) (0.7) (353) 4.7 (289) (0.7) State income taxes, net of federal income tax benefit 735 (4.2) 833 5.4 1,280 (17.1) 2,063 5.3 Goodwill Impairment 6,615 (37.7) — — 6,615 (88.6) — — Non-deductible acquisition expenses — — 5 — — — 167 0.5 General business credits (551) 3.2 41 0.3 (1,322) 17.7 13 — Other 71 (0.4) 9 — 115 (1.5) 31 0.1 Total income tax expense $ 2,272 (12.9) % $ 3,256 20.9 % $ 2,620 (35.1) % $ 8,364 21.7 %

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2020
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 September 30, Nine Months Ended September 30, (dollars in thousands, except per share amounts) 2020 2019 2020 2019 Basic (Loss) Earnings Per Share: Net (loss) income $ (19,824) $ 12,300 $ (10,087) $ 30,259 Weighted average shares outstanding 16,099,324 16,200,667 16,111,591 14,434,411 Basic (loss) earnings per common share $ (1.23) $ 0.76 $ (0.63) $ 2.10 Diluted (Loss) Earnings Per Share: Net (loss) income $ (19,824) $ 12,300 $ (10,087) $ 30,259 Weighted average shares outstanding, including all dilutive potential shares 16,099,324 16,214,562 16,111,591 14,444,732 Diluted (loss) earnings per common share $ (1.23) $ 0.76 $ (0.63) $ 2.09 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 September 30, Nine Months Ended September 30, 2020 2020 Dilutive shares (1) 7,132 6,820 (1) Dilutive potential shares that were excluded from the computation of diluted earnings per common share for the three and nine months ended September 30, 2020 as a result of the reported net loss available to common shareholders.

Regulatory Capital Requirements

Regulatory Capital Requirements and Restrictions on Subsidiary Cash	9 Months Ended
	Sep. 30, 2020
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Regulatory Capital Requirements and Restrictions on Subsidiary Cash	Regulatory Capital Requirements and Restrictions on Subsidiary CashThe 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. A comparison of the Company's and the Bank's capital with the corresponding minimum regulatory requirements in effect as of September 30, 2020 and December 31, 2019, 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 September 30, 2020 Consolidated: Total capital/risk weighted assets $562,015 13.56% $435,338 10.50% N/A N/A Tier 1 capital/risk weighted assets 444,772 10.73 352,416 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 403,053 9.72 290,225 7.00 N/A N/A Tier 1 leverage capital/average assets 444,772 8.52 208,864 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $531,541 12.95% $431,130 10.50% $410,600 10.00% Tier 1 capital/risk weighted assets 482,406 11.75 349,010 8.50 328,480 8.00 Common equity tier 1 capital/risk weighted assets 482,406 11.75 287,420 7.00 266,890 6.50 Tier 1 leverage capital/average assets 482,406 9.26 208,318 4.00 260,398 5.00 At December 31, 2019 Consolidated: Total capital/risk weighted assets $463,601 11.34% $429,077 10.50% N/A N/A Tier 1 capital/risk weighted assets 428,021 10.47 347,348 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 386,434 9.46 286,051 7.00 N/A N/A Tier 1 leverage capital/average assets 428,021 9.48 180,529 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $482,106 11.83% $427,877 10.50% $407,502 10.00% Tier 1 capital/risk weighted assets 453,027 11.12 346,377 8.50 326,002 8.00 Common equity tier 1 capital/risk weighted assets 453,027 11.12 285,251 7.00 264,876 6.50 Tier 1 leverage capital/average assets 453,027 10.06 180,209 4.00 231,166 5.00 (1) Includes a capital conservation buffer of 2.50%. As of December 31, 2019, the Bank was required to maintain reserve balances in cash on hand or on deposit with Federal Reserve Banks, of which these reserve amounts totaled $24.1 million. There was no such requirement to maintain such reserve balances as of September 30, 2020, and therefore the total amount held in reserve was zero dollars.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
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: September 30, 2020 December 31, 2019 (in thousands) Commitments to extend credit $ 893,147 $ 859,212 Commitments to sell loans 13,096 5,400 Standby letters of credit 25,864 36,192 Total $ 932,107 $ 900,804 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 a future requirement. 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 September 30, 2020, the liability for off-balance-sheet credit losses totaled $4.5 million, whereas the total amount recorded within credit loss expense for the nine months ended September 30, 2020 was $1.1 million. No liability was recorded in the prior year. 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 63% of the loans are real estate loans 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	9 Months Ended
	Sep. 30, 2020
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 2019 Annual Report on Form 10-K, filed with the SEC on March 6, 2020. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily available for sale debt securities and derivatives. 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 Assets and liabilities measured at fair value on a recurring basis comprise the following as of the dates indicated: Fair Value Measurement at September 30, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Available for sale debt securities: U.S. Government agencies and corporations $ 386 $ — $ 386 $ — State and political subdivisions 510,483 — 510,483 — Mortgage-backed securities 108,633 — 108,633 — Collateralized mortgage obligations 402,893 — 402,893 — Corporate debt securities 343,949 — 343,949 — Derivative assets 13,560 — 13,560 — Liabilities: Derivative liabilities $ 17,503 $ — $ 17,503 $ — Fair Value Measurement at December 31, 2019 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Debt securities available for sale: U.S. Government agencies and corporations $ 441 $ — $ 441 $ — State and political subdivisions 257,205 — 257,205 — Mortgage-backed securities 43,530 — 43,530 — Collateralized mortgage obligations 292,946 — 292,946 — Corporate debt securities 191,855 — 191,855 — Derivative assets 1,848 — 1,848 — Liabilities: Derivative liabilities $ 3,242 $ — $ 3,242 $ — There were no transfers of assets between Level 3 and other levels of the fair value hierarchy during the nine months ended September 30, 2020 or the year ended December 31, 2019. Changes in the fair value of available for sale debt securities are included in other comprehensive income. Nonrecurring Basis The following tables present assets measured at fair value on a nonrecurring basis as of the dates indicated: Fair Value Measurement at September 30, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 32,324 $ — $ — $ 32,324 Foreclosed assets, net 724 — — 724 Fair Value Measurement at December 31, 2019 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent impaired loans $ 6,749 $ — $ — $ 6,749 Foreclosed assets, net 3,706 — — 3,706 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 date indicated: Fair Value at (dollars in thousands) September 30, 2020 December 31, 2019 Valuation Techniques(s) Unobservable Input Range of Inputs Weighted Average Collateral dependent impaired loans $ 32,324 $ 6,749 Fair value of collateral Valuation adjustments — % - 75 % 22 % Foreclosed assets, net $ 724 3,706 Fair value of collateral Valuation adjustments 12 % - 55 % 31 % The carrying amount and estimated fair value of financial instruments at September 30, 2020 and December 31, 2019 were as follows: September 30, 2020 (in thousands) Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 134,862 $ 134,862 $ 134,862 $ — $ — Debt securities available for sale 1,366,344 1,366,344 — 1,366,344 — Loans held for sale 13,096 13,433 — 13,433 — Loans held for investment, net 3,478,932 3,530,722 — — 3,530,722 Interest receivable 21,112 21,112 — 21,112 — Federal Home Loan Bank stock 12,246 12,246 — 12,246 — Derivative assets 13,560 13,560 — 13,560 — Financial liabilities: Non-interest bearing deposits 864,504 864,504 864,504 — — Interest-bearing deposits 3,469,137 3,474,719 2,588,358 886,361 — Short-term borrowings 183,893 183,893 183,893 — — Finance leases payable 1,130 1,130 — 1,130 — Federal Home Loan Bank borrowings 101,222 104,618 — 104,618 — Junior subordinated notes issued to capital trusts 41,719 33,848 — 33,848 — Subordinated debentures 74,660 76,651 — 76,651 — Other long-term debt 26,750 26,750 — 26,750 — Derivative liabilities 17,503 17,503 — 17,503 — December 31, 2019 (in thousands) Carrying Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 73,484 $ 73,484 $ 73,484 $ — $ — Debt securities available for sale 785,977 785,977 — 785,977 — Loans held for sale 5,400 5,476 — 5,476 — Loans held for investment, net 3,422,187 3,427,952 — — 3,427,952 Interest receivable 18,525 18,525 — 18,525 — Federal Home Loan Bank stock 15,381 15,381 — 15,381 — Derivative assets 1,848 1,848 — 1,848 — Financial liabilities: Non-interest bearing deposits 662,209 662,209 662,209 — — Interest-bearing deposits 3,066,446 3,066,427 2,113,000 953,427 — Short-term borrowings 139,349 139,349 139,349 — — Finance leases payable 1,224 1,224 — 1,224 — Federal Home Loan Bank borrowings 145,700 146,913 — 146,913 — Junior subordinated notes issued to capital trusts 41,587 39,391 — 39,391 — Subordinated debentures 10,899 11,083 — 11,083 — Other long-term debt 32,250 32,250 — 32,250 — Derivative liabilities 3,242 3,242 — 3,242 —

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	Leases A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. The Company adopted FASB Topic 842 on January 1, 2019. Substantially all of the leases in which the Company is the lessee are comprised of real estate property for branches 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, and therefore, were previously not recognized on the Company’s consolidated balance sheets. The Company has one existing finance lease (previously referred to as a capital lease) for a branch location with a lease term through 2025. Supplemental balance sheet information related to leases was as follows: (in thousands) Classification September 30, 2020 December 31, 2019 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,860 $ 4,499 Finance lease right-of-use asset Premises and equipment, net 573 637 Total right-of-use assets $ 4,433 $ 5,136 Lease Liabilities Operating lease liability Other liabilities $ 4,830 $ 5,430 Finance lease liability Long-term debt 1,130 1,225 Total lease liabilities $ 5,960 $ 6,655 Weighted-average remaining lease term Operating leases 8.78 years 8.90 years Finance lease 5.92 years 6.67 years Weighted-average discount rate Operating leases 3.87 % 3.78 % Finance lease 8.89 % 8.89 % The calculated amount of the right-of-use assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to January 1, 2019, the rate for the remaining lease term as of January 1, 2019 was used. For finance leases, the Company utilizes the rate implicit in the lease. 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 Nine Months Ended September 30, September 30, (in thousands) 2020 2019 2020 2019 Lease Costs Operating lease cost $ 209 $ 303 $ 937 $ 755 Variable lease cost 42 52 189 118 Short-term lease cost — — — — Interest on lease liabilities (1) 25 28 78 85 Amortization of right-of-use assets 24 24 72 72 Net lease cost $ 300 $ 407 $ 1,276 $ 1,030 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 443 $ 524 $ 1,598 $ 1,354 Operating cash flows from finance lease 25 41 78 124 Finance cash flows from finance lease 32 28 94 83 Right-of-use assets obtained in exchange for new operating lease liabilities 39 49 132 5,319 Right-of-use assets obtained in exchange for new finance lease liabilities — — — — (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 September 30, 2020 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2020 $ 58 $ 287 December 31, 2021 235 1,112 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 Thereafter 426 2,139 Total undiscounted lease payment $ 1,454 $ 6,165 Amounts representing interest (324) (1,335) Lease liability $ 1,130 $ 4,830
Leases	Leases A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. The Company adopted FASB Topic 842 on January 1, 2019. Substantially all of the leases in which the Company is the lessee are comprised of real estate property for branches 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, and therefore, were previously not recognized on the Company’s consolidated balance sheets. The Company has one existing finance lease (previously referred to as a capital lease) for a branch location with a lease term through 2025. Supplemental balance sheet information related to leases was as follows: (in thousands) Classification September 30, 2020 December 31, 2019 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,860 $ 4,499 Finance lease right-of-use asset Premises and equipment, net 573 637 Total right-of-use assets $ 4,433 $ 5,136 Lease Liabilities Operating lease liability Other liabilities $ 4,830 $ 5,430 Finance lease liability Long-term debt 1,130 1,225 Total lease liabilities $ 5,960 $ 6,655 Weighted-average remaining lease term Operating leases 8.78 years 8.90 years Finance lease 5.92 years 6.67 years Weighted-average discount rate Operating leases 3.87 % 3.78 % Finance lease 8.89 % 8.89 % The calculated amount of the right-of-use assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used to present value the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to January 1, 2019, the rate for the remaining lease term as of January 1, 2019 was used. For finance leases, the Company utilizes the rate implicit in the lease. 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 Nine Months Ended September 30, September 30, (in thousands) 2020 2019 2020 2019 Lease Costs Operating lease cost $ 209 $ 303 $ 937 $ 755 Variable lease cost 42 52 189 118 Short-term lease cost — — — — Interest on lease liabilities (1) 25 28 78 85 Amortization of right-of-use assets 24 24 72 72 Net lease cost $ 300 $ 407 $ 1,276 $ 1,030 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 443 $ 524 $ 1,598 $ 1,354 Operating cash flows from finance lease 25 41 78 124 Finance cash flows from finance lease 32 28 94 83 Right-of-use assets obtained in exchange for new operating lease liabilities 39 49 132 5,319 Right-of-use assets obtained in exchange for new finance lease liabilities — — — — (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 September 30, 2020 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2020 $ 58 $ 287 December 31, 2021 235 1,112 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 Thereafter 426 2,139 Total undiscounted lease payment $ 1,454 $ 6,165 Amounts representing interest (324) (1,335) Lease liability $ 1,130 $ 4,830

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 20, 2020, the board of directors of the Company authorized resuming repurchases under the Company's share repurchase program. The Company previously announced the temporary suspension of its share repurchase program in light of market conditions associated with the COVID-19 pandemic. On October 28, 2020, the board of directors of the Company declared a cash dividend of $0.22 per share payable on December 15, 2020 to shareholders of record as of the close of business on December 1, 2020. Effective October 28, 2020, the Company plans to consolidate its branch office in Newport, Minnesota into its nearby branch office in South St. Paul, Minnesota. This branch consolidation is part of the Company's strategy to improve operating efficiency. The Company estimates the branch consolidation will reduce its annual operating expenses by approximately $360 thousand. The Company has evaluated events that have occurred subsequent to September 30, 2020 and has concluded there are no other subsequent events that would require recognition in the accompanying consolidated financial statements.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
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, 2019, filed with the SEC on March 6, 2020.
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 cushion the economic fallout. Most notably, the CARES Act was signed into law at the end of March 2020 as a $2 trillion legislative package. The goal of the CARES Act was to prevent a severe economic downturn through various measures, including direct financial aid to American families and economic stimulus to significantly impacted industry sectors. The package also includes extensive emergency funding for hospitals and healthcare providers. 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. 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 resulting measures to curtail its spread, 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 the breadth of the economic impact of COVID-19 may affect its borrowers’ ability to repay in future periods. The Company’s fee income could be reduced due to COVID-19. In keeping with guidance from regulators, the Company continues to actively work with COVID-19 affected customers. During the second and third quarters of 2020, we waived fees from a variety of sources, such as, but not limited to, insufficient funds and overdraft fees, ATM fees, account maintenance fees, etc. These reductions in fees are thought, at this time, to be temporary in conjunction with the length of the expected COVID-19 related economic crisis. At this time, the Company is unable to project the materiality of such an impact, but recognizes the breadth of the economic impact of COVID-19 is likely to impact its fee income 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. On July 28, 2020, the Company completed the private placement of $65.0 million of its subordinated notes. The 5.75% fixed-to-floating rate subordinated notes are due July 30, 2030. For regulatory capital purposes, the subordinated notes have been structured to qualify initially as Tier 2 Capital for the Company. 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 are 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. In the third quarter 2020, due to the continued economic impact that COVID-19 has had on the Company, management concluded that factors, such as the decline in macroeconomic conditions and a sustained decrease in share price, have led to the occurrence of a triggering event and therefore an interim impairment test over goodwill was performed as of September 30, 2020. Based upon the interim impairment assessment, we concluded that a portion of our goodwill was impaired as our estimated fair value was less than our book value on this date. The Company recorded a goodwill impairment charge of $31.5 million, which was reflected within "Noninterest expense" in the Consolidated Statements of Income. See Note 6. Goodwill and Intangible Assets for additional information. Processes, controls and business continuity plan The Company maintains a Business Continuity Plan, which was enacted upon the World Health Organization declaration of COVID-19 to be a global pandemic. Shortly after enacting the plan, the Company deployed a successful remote working strategy. The Company also implemented a number of other safety protocols, as well as initiated strategies for monitoring and responding to COVID-19 in our market areas, including customer relief efforts. As of September 30, 2020, the majority of our employees have returned to work in our branch offices with no disruption to our operations. To date, no material operational or internal control challenges or risks have been identified. We have also not incurred additional material cost related to our remote working strategy to date, nor do we anticipate incurring material cost in future periods. Further, as of September 30, 2020 the Company also does not anticipate significant challenges in its ability to maintain its systems and controls in light of the measures the Company has taken to prevent the spread of COVID-19. The Company does not currently face any material resource constraint through the implementation of its business continuity plans. 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 virus, the Company is engaging in more frequent communication with borrowers to better understand their situation 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 at future measurement 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 nine months ended September 30, 2020 may not be indicative of results for the year ending December 31, 2020, 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 investment management 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.
Allowance for Credit Losses	Allowance for Credit Losses Debt Securities Available for Sale For available for sale debt securities in an unrealized loss position, the Company evaluates the securities to determine whether the decline in the fair value below the amortized cost basis (impairment) is due to credit-related factors or noncredit-related factors. Any impairment that is not credit related is recognized in other comprehensive income, net of applicable taxes. Credit-related impairment is recognized as an allowance for credit losses related to debt securities AFS on the balance sheet, limited to the amount by which the amortized cost basis exceeds the fair value, with a corresponding adjustment to earnings. Both the ACL and the adjustment to net income may be reversed if conditions change. However, if the Company intends to sell an impaired available for sale debt security or more likely than not will be required to sell such a security before recovering its amortized cost basis, the entire impairment amount must be recognized in earnings with a corresponding adjustment to the security’s amortized cost basis. Because the security’s amortized cost basis is adjusted to fair value, there is no ACL in this situation. In evaluating available for sale debt securities in unrealized loss positions for impairment and the criteria regarding its intent or requirement to sell such securities, the Company considers the extent to which fair value is less than amortized cost, whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuers’ financial condition, among other factors. Changes in the allowance for credit losses are recorded as credit loss expense (or reversal of credit loss expense). Losses are charged against the ACL when management believes the uncollectability of an available for sale debt security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable is excluded from the estimate of credit losses. Loans Held for Investment Under the current expected credit loss model, the allowance for credit losses is a valuation account estimated at each balance sheet date and deducted from the amortized cost basis of loans held for investment to present the net amount expected to be collected. The Company estimates the ACL based on the underlying assets’ amortized cost basis, which is the amount at which the financing receivable is originated or acquired, adjusted for collection of cash and charge-offs, as well as applicable accretion or amortization of premium, discount, and net deferred fees or costs. In the event that collection of principal becomes uncertain, the Company has policies in place to reverse accrued interest in a timely manner. Therefore, the Company has made a policy election to exclude accrued interest from the measurement of ACL. Expected credit losses are reflected in the allowance for credit losses through a charge to credit loss expense. When the Company deems all or a portion of a financial asset to be uncollectible, the appropriate amount is written off and the ACL is reduced by the same amount. The Company applies judgment to determine when a financial asset is deemed uncollectible; however, generally speaking, an asset will be considered uncollectible no later than when all efforts at collection have been exhausted. Subsequent recoveries, if any, are credited to the ACL when received. The Company measures expected credit losses of financial assets on a collective (pool) basis when the financial assets share similar risk characteristics. Depending on the nature of the pool of financial assets with similar risk characteristics, the Company uses a DCF method or a loss-rate method to estimate expected credit losses. The Company’s methodologies for estimating the ACL consider available relevant information about the collectability of cash flows, including information about past events, current conditions, and reasonable and supportable forecasts. The methodologies apply historical loss information, adjusted for asset-specific characteristics, economic conditions at the measurement date, and forecasts about future economic conditions expected to exist through the contractual lives of the financial assets that are reasonable and supportable, to the identified pools of financial assets with similar risk characteristics for which the historical loss experience was observed. The Company’s methodologies revert back to historical loss driver information on a straight-line basis over four quarters when it can no longer develop reasonable and supportable forecasts. The Company adjusted in the first quarter of 2020 the reversion period from the previously disclosed six quarters to four quarters based upon current forecasted conditions. Discounted Cash Flow Method The Company uses the DCF method to estimate expected credit losses for the agricultural, commercial and industrial, CRE - construction and development, CRE - farmland, CRE - multifamily, CRE - other, RRE - owner-occupied one-to-four family first liens, RRE - nonowner-occupied one-to-four family first liens, RRE - one-to-four family junior liens, and consumer loan pools. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The Company uses regression analysis of historical internal and peer data to determine which variables are best suited to be economic variables utilized when modeling lifetime probability of default and loss given default. This analysis also determines how expected probability of default and loss given default will react to forecasted levels of the economic variables. For the loan pools utilizing the DCF method, management utilizes one or multiple of the following economic variables: Midwest unemployment, national retail sales, CRE index, US rental vacancy rate, US gross domestic product, and national home price index (HPI). For all DCF models, management has determined that four quarters represents a reasonable and supportable forecast period and reverts back to a historical loss rate over four quarters on a straight-line basis. Management leverages economic projections from a reputable and independent third party to inform its loss driver forecasts over the four quarter forecast period. Other internal and external indicators of economic forecasts are also considered by management when developing the forecast metrics. The combination of adjustments for credit expectations (default and loss) and timing expectations (prepayment, curtailment, and time to recovery) produces an expected cash flow stream at the instrument level. Instrument effective yield is calculated, net of the impacts of prepayment assumptions, and the instrument expected cash flows are then discounted at that effective yield to produce an instrument-level net present value of expected cash flows (“NPV”). An ACL is established for the difference between the instrument’s NPV and amortized cost basis. In addition, management utilizes qualitative factors to adjust the calculated ACL as appropriate. Qualitative factors are based on management's judgment of company, market, industry or business specific data, changes in underlying loan composition of specific portfolios, trends relating to credit quality, delinquency, non-performing and adversely rated loans, and reasonable and supportable forecasts of economic conditions. Loss-Rate Method The Company uses a loss-rate method to estimate expected credit losses for the credit card and overdraft pools. For each of these pools, the Company applies an expected loss ratio based on internal and peer historical losses, adjusted as appropriate for qualitative factors. Qualitative loss factors are based on management's judgment of company, market, industry or business specific data, changes in underlying loan composition of specific portfolios, trends relating to credit quality, delinquency, non-performing and adversely rated loans, and reasonable and supportable forecasts of economic conditions. Collateral Dependent Financial Assets Loans that do not share risk characteristics are evaluated on an individual basis. For collateral dependent financial assets where the Company has determined that foreclosure of the collateral is probable, or where the borrower is experiencing financial difficulty and the Company expects repayment of the financial asset to be provided substantially through the operation or sale of the collateral, the ACL is measured based on the difference between the fair value of the collateral and the amortized cost basis of the asset as of the measurement date. When repayment is expected to be from the operation of the collateral, expected credit losses are calculated as the amount by which the amortized cost basis of the financial asset exceeds the present value of expected cash flows from the operation of the collateral. When repayment is expected to be from the sale of the collateral, expected credit losses are calculated as the amount by which the amortized costs basis of the financial asset exceeds the fair value of the underlying collateral less estimated cost to sell. The ACL may be zero if the fair value of the collateral at the measurement date exceeds the amortized cost basis of the financial asset. The Company’s estimate of the ACL reflects losses expected over the remaining contractual life of the assets. The contractual term does not consider extensions, renewals or modifications unless the Company has identified an expected TDR. A loan that has been modified or renewed is considered a TDR when two conditions are met: 1) the borrower is experiencing financial difficulty and 2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics. The Company’s ACL reflects all effects of a TDR when an individual asset is specifically identified as a reasonably expected TDR. The Company has determined that a TDR is reasonably expected no later than the point when the lender concludes that modification is the best course of action and it is at least reasonably possible that the troubled borrower will accept some form of concession from the lender to avoid a default. Reasonably expected TDRs and executed non-performing TDRs are evaluated individually to determine the required ACL. TDRs performing in accordance with their modified contractual terms for a reasonable period of time may be included in the Company’s existing pools based on the underlying risk characteristics of the loan to measure the ACL. Guidance on Non-TDR Loan Modifications due to COVID-19 Section 4013 of the CARES Act, “Temporary Relief From Troubled Debt Restructurings,” allows financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. Under Section 4013 of the CARES Act, loan modifications that qualify for such suspension are those where the borrower was not more than 30 days past due as of December 31, 2019. In addition, the loan modification being made in response to the COVID-19 pandemic must include a deferral or delay in the payment of principal or interest, or change in the interest rate on the loan. In March 2020, various regulatory agencies, including the FRB and the FDIC, issued an interagency statement, effective immediately, on loan modifications and reporting for financial institutions working with customers affected by COVID-19. The agencies confirmed with the staff of the FASB that short-term modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief, are not to be considered TDRs. This includes short-term (e.g., six months) modifications, such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. Liability for Off-Balance Sheet Credit Losses Financial instruments include off-balance sheet credit losses, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for off-balance sheet loan commitments is represented by the contractual amount of those instruments. Such financial instruments are recorded when they are funded.
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.
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 2019 Annual Report on Form 10-K, filed with the SEC on March 6, 2020. The Company uses fair value to measure certain assets and liabilities on a recurring basis, primarily available for sale debt securities and derivatives. 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.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards Accounting Guidance Adopted in 2020 On January 1, 2020, the Company adopted ASU 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables. It is also applied to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, ASC 326 made changes to the accounting for AFS debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on AFS debt securities that management does not intend to sell or believes that it is more likely than not they will be required to sell. The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for reporting periods beginning after January 1, 2020 are presented under ASC 326, while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a net decrease to retained earnings of $5.4 million as of January 1, 2020 for the cumulative effect of adopting ASC 326. The transition adjustment includes a $4.0 million impact due to the increase in ACL related to loans, a $3.4 million impact due the establishment of the allowance for unfunded commitments, and a $1.9 million impact on deferred taxes. The Company adopted ASC 326 using the prospective transition approach for financial assets purchased with credit deterioration that were previously classified as PCI and accounted for under ASC 310-30. In accordance with the standard, management did not reassess whether PCI assets met the criteria of PCD assets as of the date of adoption. On January 1, 2020, the amortized cost basis of the PCD assets were adjusted to reflect the addition of $119 thousand to the ACL. The remaining noncredit discount will be accreted into interest income at the effective interest rate as of January 1, 2020. The following table illustrates the impact of ASC 326 on the allowance for credit losses on loans and the liability for off-balance sheet credit exposures: January 1, 2020 Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported Under ASC 326 (in thousands) Assets: Loans Agricultural $ 3,748 $ (2,557) $ 1,191 Commercial and industrial 8,394 2,728 11,122 Commercial real estate 13,804 1,300 15,104 Residential real estate 2,685 2,050 4,735 Consumer 448 463 911 Allowance for credit losses on loans $ 29,079 $ 3,984 $ 33,063 Liabilities: Liability for off-balance sheet credit exposures $ — $ 3,433 $ 3,433 In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. The amendments in this update modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, including the consideration of costs and benefits. Four disclosure requirements were removed, three were modified, and two were added. In addition, the amendments eliminate “ at a minimum” from the phrase “ an entity shall disclose at a minimum” to promote the appropriate exercise of discretion by entities when considering fair value measurement disclosures and to clarify that materiality is an appropriate consideration of entities and their auditors when evaluating disclosure requirements. The amendments in this update are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. 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

Effect of New Financial Accou_2

Effect of New Financial Accounting Standards (Tables)	9 Months Ended
	Sep. 30, 2020
Accounting Standards Update and Change in Accounting Principle [Abstract]
Schedule of Impacts from New Accounting Pronouncements	The following table illustrates the impact of ASC 326 on the allowance for credit losses on loans and the liability for off-balance sheet credit exposures: January 1, 2020 Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported Under ASC 326 (in thousands) Assets: Loans Agricultural $ 3,748 $ (2,557) $ 1,191 Commercial and industrial 8,394 2,728 11,122 Commercial real estate 13,804 1,300 15,104 Residential real estate 2,685 2,050 4,735 Consumer 448 463 911 Allowance for credit losses on loans $ 29,079 $ 3,984 $ 33,063 Liabilities: Liability for off-balance sheet credit exposures $ — $ 3,433 $ 3,433

Debt Securities (Tables)

Debt Securities (Tables)	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 (in thousands) Amortized Gross Gross Allowance for Credit Loss related to Debt Securities Estimated Fair Value U.S. Government agencies and corporations $ 378 $ 8 $ — $ — $ 386 State and political subdivisions 499,922 11,875 1,314 — 510,483 Mortgage-backed securities 106,997 1,759 123 — 108,633 Collateralized mortgage obligations 395,772 7,599 478 — 402,893 Corporate debt securities 335,596 8,928 575 — 343,949 Total debt securities $ 1,338,665 $ 30,169 $ 2,490 $ — $ 1,366,344 As of December 31, 2019 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U.S. Government agencies and corporations $ 439 $ 2 $ — $ 441 State and political subdivisions 253,750 3,803 348 257,205 Mortgage-backed securities 43,009 536 15 43,530 Collateralized mortgage obligations 293,911 1,000 1,965 292,946 Corporate debt securities 188,952 3,018 115 191,855 Total debt securities $ 780,061 $ 8,359 $ 2,443 $ 785,977
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 September 30, 2020, aggregated by investment category and length of time in a continuous loss position: As of September 30, 2020 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 68 $ 90,190 $ 1,314 $ — $ — $ 90,190 $ 1,314 Mortgage-backed securities 7 25,209 123 16 — 25,225 123 Collateralized mortgage obligations 5 60,760 249 9,444 229 70,204 478 Corporate debt securities 18 44,417 488 1,316 87 45,733 575 Total 98 $ 220,576 $ 2,174 $ 10,776 $ 316 $ 231,352 $ 2,490 The following table presents information pertaining to debt securities with gross unrealized losses as of December 31, 2019, aggregated by investment category and length of time that individual securities have been in a continuous loss position: As of December 31, 2019 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 47 $ 27,161 $ 322 $ 2,112 $ 26 $ 29,273 $ 348 Mortgage-backed securities 7 963 12 1,365 3 2,328 15 Collateralized mortgage obligations 33 103,395 719 65,604 1,246 168,999 1,965 Corporate debt securities 7 7,012 14 8,788 101 15,800 115 Total 94 $ 138,531 $ 1,067 $ 77,869 $ 1,376 $ 216,400 $ 2,443
Schedule Proceeds and Realized Gains (Losses)	Proceeds and gross realized gains and losses on debt securities available for sale for the three months and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended (in thousands) September 30, 2020 September 30, 2019 September 30, 2020 September 30, 2019 Proceeds from sales of debt securities available for sale $ 4,885 $ 19 $ 27,020 $ 125,433 Gross realized gains from sales of debt securities available for sale 105 18 255 124 Gross realized losses from sales of debt securities available for sale (10) (1) (123) (56) Net realized gain from sales of debt securities available for sale $ 95 $ 17 $ 132 $ 68
Investments Classified by Contractual Maturity Date	The contractual maturity distribution of investment debt securities at September 30, 2020, 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 $ 52,185 $ 52,578 Due after one year through five years 252,498 260,915 Due after five years through ten years 220,385 225,480 Due after ten years 310,828 315,845 $ 835,896 $ 854,818 Mortgage-backed securities 106,997 108,633 Collateralized mortgage obligations 395,772 402,893 Total $ 1,338,665 $ 1,366,344

Loans Receivable and the Allo_2

Loans Receivable and the Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Schedule of Loans by Lending Classification	The composition of loans by class of receivable was as follows: As of (in thousands) September 30, 2020 December 31, 2019 Agricultural $ 129,453 $ 140,446 Commercial and industrial 1,103,102 835,236 Commercial real estate: Construction & development 191,423 298,077 Farmland 152,362 181,885 Multifamily 235,241 227,407 Commercial real estate-other 1,128,009 1,107,490 Total commercial real estate 1,707,035 1,814,859 Residential real estate: One- to four- family first liens 371,390 407,418 One- to four- family junior liens 150,180 170,381 Total residential real estate 521,570 577,799 Consumer 76,272 82,926 Loans held for investment, net of unearned income 3,537,432 3,451,266 Allowance for credit losses (58,500) (29,079) Total loans held for investment, net $ 3,478,932 $ 3,422,187
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 September 30, 2020 Agricultural $ 127,448 $ 390 $ 339 $ 1,276 $ 129,453 $ — Commercial and industrial 1,098,272 1,027 105 3,698 1,103,102 5 Commercial real estate: Construction and development 188,115 1,774 825 709 191,423 — Farmland 142,470 114 353 9,425 152,362 — Multifamily 235,241 — — — 235,241 — Commercial real estate-other 1,121,100 996 3 5,910 1,128,009 — Total commercial real estate 1,686,926 2,884 1,181 16,044 1,707,035 — Residential real estate: One- to four- family first liens 364,393 1,856 1,271 3,870 371,390 2,588 One- to four- family junior liens 149,374 603 46 157 150,180 — Total residential real estate 513,767 2,459 1,317 4,027 521,570 2,588 Consumer 76,078 78 23 93 76,272 — Total $ 3,502,491 $ 6,838 $ 2,965 $ 25,138 $ 3,537,432 $ 2,593 December 31, 2019 Agricultural $ 137,715 $ 975 $ — $ 1,756 $ 140,446 $ — Commercial and industrial 828,842 846 270 5,278 835,236 — Commercial real estate: Construction and development 294,995 2,256 621 205 298,077 — Farmland 175,281 362 — 6,242 181,885 — Multifamily 227,013 394 — — 227,407 — Commercial real estate-other 1,102,504 1,965 347 2,674 1,107,490 — Total commercial real estate 1,799,793 4,977 968 9,121 1,814,859 — Residential real estate: One- to four- family first liens 402,471 2,579 857 1,511 407,418 99 One- to four- family junior liens 169,592 518 108 163 170,381 25 Total residential real estate 572,063 3,097 965 1,674 577,799 124 Consumer 82,558 150 80 138 82,926 12 Total $ 3,420,971 $ 10,045 $ 2,283 $ 17,967 $ 3,451,266 $ 136
Schedule of Amortized Cost Basis on Nonaccrual Status	The following table presents the amortized cost basis of loans on non-accrual status, loans past due 90 days or more and still accruing by class of loan and related interest income recognized: Three Months Ended September 30, Nine Months Ended September 30, (in thousands) Beginning of Period Nonaccrual End of Period Nonaccrual Nonaccrual with no Allowance for Credit Losses 90 Days or More Past Due And Accruing Interest Income Recognized on Nonaccrual Interest Income Recognized on Nonaccrual As of and for the Three and Nine Months Ended September 30, 2020 Agricultural $ 2,894 $ 2,787 $ 1,576 $ — $ 14 $ 94 Commercial and industrial 13,276 8,725 4,825 5 49 150 Commercial real estate: Construction and development 1,494 1,387 1,007 — 5 46 Farmland 10,402 13,693 12,385 — 23 116 Multifamily — — — — — 1 Commercial real estate-other 10,141 9,783 2,850 — 8 32 Total commercial real estate 22,037 24,863 16,242 — 36 195 Residential real estate: One- to four- family first liens 2,557 1,999 207 2,588 21 62 One- to four- family junior liens 513 552 1 — 9 16 Total residential real estate 3,070 2,551 208 2,588 30 78 Consumer 206 145 13 — 1 9 Total $ 41,483 $ 39,071 $ 22,864 $ 2,593 $ 130 $ 526
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 September 30, 2020. As of September 30, 2020, there were no 'loss' rated credits. Term Loans by Origination Year Revolving Loans September 30, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Total Agricultural Pass $ 18,711 $ 9,402 $ 3,467 $ 2,612 $ 1,607 $ 2,392 $ 66,182 $ 104,373 Special mention / watch 5,268 1,456 125 113 593 1,110 7,885 16,550 Substandard 3,830 874 272 187 130 227 3,009 8,529 Doubtful — — — — — 1 — 1 Total $ 27,809 $ 11,732 $ 3,864 $ 2,912 $ 2,330 $ 3,730 $ 77,076 $ 129,453 Commercial and industrial Pass $ 552,011 $ 113,602 $ 61,017 $ 71,706 $ 40,276 $ 96,039 $ 130,932 $ 1,065,583 Special mention / watch 3,770 679 1,437 2,395 869 1,272 6,065 16,487 Substandard 3,846 1,651 609 841 538 4,301 9,242 21,028 Doubtful — — — 1 — 2 1 4 Total $ 559,627 $ 115,932 $ 63,063 $ 74,943 $ 41,683 $ 101,614 $ 146,240 $ 1,103,102 CRE - Construction and development Pass $ 86,471 $ 47,688 $ 20,154 $ 4,356 $ 929 $ 1,165 $ 21,666 $ 182,429 Special mention / watch 4,570 461 546 — 11 33 — 5,621 Substandard 1,053 1,497 220 — — 38 565 3,373 Doubtful — — — — — — — — Total $ 92,094 $ 49,646 $ 20,920 $ 4,356 $ 940 $ 1,236 $ 22,231 $ 191,423 CRE - Farmland Pass $ 39,115 $ 28,158 $ 11,528 $ 11,938 $ 8,493 $ 16,116 $ 1,740 $ 117,088 Special mention / watch 7,976 4,709 1,040 667 1,212 239 353 16,196 Substandard 2,656 4,163 4,509 1,729 204 5,767 50 19,078 Doubtful — — — — — — — — Total $ 49,747 $ 37,030 $ 17,077 $ 14,334 $ 9,909 $ 22,122 $ 2,143 $ 152,362 CRE - Multifamily Pass $ 131,319 $ 18,505 $ 18,183 $ 17,687 $ 16,004 $ 21,446 $ 10,612 $ 233,756 Special mention / watch 346 — — — 70 — — 416 Substandard 1,069 — — — — — — 1,069 Doubtful — — — — — — — — Total $ 132,734 $ 18,505 $ 18,183 $ 17,687 $ 16,074 $ 21,446 $ 10,612 $ 235,241 CRE - other Pass $ 423,851 $ 130,751 $ 69,359 $ 90,154 $ 75,302 $ 104,107 $ 41,301 $ 934,825 Special mention / watch 79,206 16,202 12,061 4,865 4,054 4,159 885 121,432 Substandard 44,915 7,767 7,021 1,233 586 9,231 999 71,752 Doubtful — — — — — — — — Total $ 547,972 $ 154,720 $ 88,441 $ 96,252 $ 79,942 $ 117,497 $ 43,185 $ 1,128,009 RRE - One- to four- family first liens Performing $ 98,719 $ 54,993 $ 46,672 $ 41,713 $ 39,818 $ 75,091 $ 9,796 $ 366,802 Nonperforming 67 66 561 812 522 2,560 — 4,588 Total $ 98,786 $ 55,059 $ 47,233 $ 42,525 $ 40,340 $ 77,651 $ 9,796 $ 371,390 RRE - One- to four- family junior liens Performing $ 15,090 $ 8,971 $ 14,175 $ 6,994 $ 3,821 $ 6,773 $ 93,804 $ 149,628 Nonperforming — — — 32 117 233 170 552 Total $ 15,090 $ 8,971 $ 14,175 $ 7,026 $ 3,938 $ 7,006 $ 93,974 $ 150,180 Consumer Performing $ 21,940 $ 16,255 $ 12,000 $ 5,796 $ 3,033 $ 6,450 $ 10,653 $ 76,127 Nonperforming — 34 46 18 12 35 — 145 Total $ 21,940 $ 16,289 $ 12,046 $ 5,814 $ 3,045 $ 6,485 $ 10,653 $ 76,272 Term Loans by Origination Year Revolving Loans 2020 2019 2018 2017 2016 Prior Total Total by Credit Quality Indicator Category Pass $ 1,251,478 $ 348,106 $ 183,708 $ 198,453 $ 142,611 $ 241,265 $ 272,433 $ 2,638,054 Special mention / watch 101,136 23,507 15,209 8,040 6,809 6,813 15,188 176,702 Substandard 57,369 15,952 12,631 3,990 1,458 19,564 13,865 124,829 Doubtful — — — 1 — 3 1 5 Performing 135,749 80,219 72,847 54,503 46,672 88,314 114,253 592,557 Nonperforming 67 100 607 862 651 2,828 170 5,285 Total $ 1,545,799 $ 467,884 $ 285,002 $ 265,849 $ 198,201 $ 358,787 $ 415,910 $ 3,537,432 The following table sets forth the risk category of loans by class of loans and credit quality indicator used on the most recent analysis performed as of December 31, 2019: December 31, 2019 Pass Special Mention / Watch Substandard Doubtful Loss Total Agricultural $ 117,374 $ 13,292 $ 9,780 $ — $ — $ 140,446 Commercial and industrial 794,526 19,038 21,635 1 36 835,236 Commercial real estate: Construction and development 283,921 11,423 2,733 — — 298,077 Farmland 141,107 21,307 19,471 — — 181,885 Multifamily 226,124 90 1,193 — — 227,407 Commercial real estate-other 1,036,418 50,691 20,381 — — 1,107,490 Total commercial real estate 1,687,570 83,511 43,778 — — 1,814,859 Residential real estate: One- to four- family first liens 396,175 4,547 6,532 164 — 407,418 One- to four- family junior liens 168,229 1,282 870 — — 170,381 Total residential real estate 564,404 5,829 7,402 164 — 577,799 Consumer 82,650 39 218 19 — 82,926 Total $ 3,246,524 $ 121,709 $ 82,813 $ 184 $ 36 $ 3,451,266
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 September 30, 2020 and 2019 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Three Months September 30, 2020 Beginning balance $ 1,408 $ 18,709 $ 28,221 $ 6,074 $ 1,232 $ 55,644 Charge-offs (746) (983) (275) (83) (101) (2,188) Recoveries 103 180 9 14 41 347 Credit loss expense (1) 649 (1,267) 2,966 2,273 76 4,697 Ending balance $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 For the Three Months Ended September 30, 2019 Beginning balance $ 3,720 $ 7,633 $ 13,655 $ 3,377 $ 306 $ 28,691 Charge-offs (986) (328) — (121) (200) (1,635) Recoveries 22 9 8 49 124 212 Credit loss expense 1,372 1,680 1,808 (742) 146 4,264 Ending balance $ 4,128 $ 8,994 $ 15,471 $ 2,563 $ 376 $ 31,532 For the Nine Months Ended September 30, 2020 and 2019 (in thousands) Agricultural Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer Total For the Nine Months Ended September 30, 2020 Beginning balance, prior to adoption of ASC 326 $ 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 (939) (2,356) (1,787) (186) (520) (5,788) Recoveries 129 559 28 29 137 882 Credit loss expense (1) 1,033 7,314 17,576 3,700 720 30,343 Ending balance $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 For the Nine Months Ended September 30, 2019 Beginning balance $ 3,637 $ 7,478 $ 15,635 $ 2,349 $ 208 $ 29,307 Charge-offs (1,137) (2,441) (960) (171) (469) (5,178) Recoveries 31 158 272 67 321 849 Credit loss expense 1,597 3,799 524 318 316 6,554 Ending balance $ 4,128 $ 8,994 $ 15,471 $ 2,563 $ 376 $ 31,532 (1) The difference in the credit loss expense reported herein as compared to the Consolidated Statements of Income is associated with the credit loss expense of $0.3 million and $1.1 million related to off-balance sheet credit exposures for the three months and nine months ended September 30, 2020, respectively. The composition of allowance for credit losses by portfolio segment based on evaluation method were as follows: As of September 30, 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 $ 2,161 $ 7,774 $ 23,412 $ 204 $ 7 $ 33,558 Collectively evaluated for impairment 127,292 1,095,328 1,683,623 521,366 76,265 3,503,874 Total $ 129,453 $ 1,103,102 $ 1,707,035 $ 521,570 $ 76,272 $ 3,537,432 Allowance for credit losses: Individually evaluated for impairment $ 55 $ 504 $ 675 $ — $ — $ 1,234 Collectively evaluated for impairment 1,359 16,135 30,246 8,278 1,248 57,266 Total $ 1,414 $ 16,639 $ 30,921 $ 8,278 $ 1,248 $ 58,500 As of December 31, 2019 (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 $ 4,312 $ 12,242 $ 16,082 $ 838 $ 21 $ 33,495 Collectively evaluated for impairment 135,246 822,939 1,781,306 572,865 82,864 3,395,220 Purchased credit impaired loans 888 55 17,471 4,096 41 22,551 Total $ 140,446 $ 835,236 $ 1,814,859 $ 577,799 $ 82,926 $ 3,451,266 Allowance for loan losses: Individually evaluated for impairment $ 212 $ 2,198 $ 1,180 $ 73 $ — $ 3,663 Collectively evaluated for impairment 3,536 6,194 11,836 2,152 448 24,166 Purchased credit impaired loans — 2 788 460 — 1,250 Total $ 3,748 $ 8,394 $ 13,804 $ 2,685 $ 448 $ 29,079
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 September 30, 2020 Primary Type of Collateral Real Estate Equipment Other Total ACL Allocation Agricultural $ 767 $ 741 $ 653 $ 2,161 $ 55 Commercial and industrial 682 4,151 2,941 7,774 504 Commercial real estate: Construction and development 1,006 — — 1,006 — Farmland 11,826 1,345 — 13,171 88 Multifamily — — — — — Commercial real estate-other 8,794 441 — 9,235 587 Residential real estate: One- to four- family first liens 204 — — 204 — One- to four- family junior liens — — — — — Consumer 7 — — 7 — Total $ 23,286 $ 6,678 $ 3,594 $ 33,558 $ 1,234
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 September 30, 2020 2019 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 - Interest rate reduction Commercial and industrial 1 $ 143 $ 143 — $ — $ — CONCESSION - Extended maturity date Agricultural — — — 7 341 341 Commercial and industrial — — — 1 1,863 1,863 Farmland — — — 1 158 158 One- to four- family first liens 1 128 132 — — — One- to four- family junior liens — — — 1 5 5 CONCESSION - Other Agricultural 1 59 69 — — — Farmland 1 150 161 — — — Total 4 $ 480 $ 505 10 $ 2,367 $ 2,367 Nine Months Ended September 30, 2020 2019 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 - Interest rate reduction Commercial and industrial 1 $ 143 $ 143 — $ — $ — CONCESSION - Extended maturity date Agricultural — — — 7 341 341 Commercial and industrial — — — 1 1,863 1,863 Farmland — — — 1 158 158 Commercial real estate-other 3 759 808 — — — One- to four- family first liens 3 274 278 3 240 239 One- to four- family junior liens — — — 3 81 81 CONCESSION - Other Agricultural 2 267 278 — — — Farmland 3 504 514 — — — Total 12 $ 1,947 $ 2,021 15 $ 2,683 $ 2,682
Schedule of Impaired Receivables	The following table presents loans individually evaluated for impairment by class of receivable as of December 31, 2019, which was prior to the adoption of ASC 326: December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: Agricultural $ 2,383 $ 2,913 $ — Commercial and industrial 7,391 10,875 — Commercial real estate: Construction and development 1,181 1,218 — Farmland 4,306 4,331 — Multifamily — — — Commercial real estate-other 5,709 5,854 — Total commercial real estate 11,196 11,403 — Residential real estate: One- to four- family first liens 577 578 — One- to four- family junior liens — — — Total residential real estate 577 578 — Consumer 21 21 — Total $ 21,568 $ 25,790 $ — With an allowance recorded: Agricultural $ 1,929 $ 1,930 $ 212 Commercial and industrial 4,851 5,417 2,198 Commercial real estate: Construction and development 135 135 135 Farmland 1,109 1,148 347 Multifamily — — — Commercial real estate-other 3,642 4,229 698 Total commercial real estate 4,886 5,512 1,180 Residential real estate: One- to four- family first liens 261 262 73 One- to four- family junior liens — — — Total residential real estate 261 262 73 Consumer — — — Total $ 11,927 $ 13,121 $ 3,663 Total: Agricultural $ 4,312 $ 4,843 $ 212 Commercial and industrial 12,242 16,292 2,198 Commercial real estate: Construction and development 1,316 1,353 135 Farmland 5,415 5,479 347 Multifamily — — — Commercial real estate-other 9,351 10,083 698 Total commercial real estate 16,082 16,915 1,180 Residential real estate: One- to four- family first liens 838 840 73 One- to four- family junior liens — — — Total residential real estate 838 840 73 Consumer 21 21 — Total $ 33,495 $ 38,911 $ 3,663 The following table presents the average recorded investment and interest income recognized for loans individually evaluated for impairment by class of receivable, during the stated periods, which were prior to the adoption of ASC 326: Three Months Ended September 30, Nine Months Ended September 30, 2019 2019 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded: Agricultural $ 2,260 $ 11 $ 1,962 $ — Commercial and industrial 5,199 2 4,961 — Commercial real estate: Construction and development — — — — Farmland 2,410 — 1,710 — Multifamily — — — — Commercial real estate-other 1,541 7 1,361 20 Total commercial real estate 3,951 7 3,071 20 Residential real estate: One- to four- family first liens 347 — 260 — One- to four- family junior liens — — — — Total residential real estate 347 — 260 — Consumer 21 — 16 — Total $ 11,778 $ 20 $ 10,270 $ 20 With an allowance recorded: Agricultural $ 1,527 $ — $ 1,378 $ 31 Commercial and industrial 4,577 16 3,386 — Commercial real estate: Construction and development — — — — Farmland 649 — 586 5 Multifamily — — — — Commercial real estate-other 2,507 82 1,834 93 Total commercial real estate 3,156 82 2,420 98 Residential real estate: One- to four- family first liens 265 2 266 7 One- to four- family junior liens — — — — Total residential real estate 265 2 266 7 Consumer — — — — Total $ 9,525 $ 100 $ 7,450 $ 136 Total: Agricultural $ 3,787 $ 11 $ 3,340 $ 31 Commercial and industrial 9,776 18 8,347 — Commercial real estate: Construction and development — — — — Farmland 3,059 — 2,296 5 Multifamily — — — — Commercial real estate-other 4,048 89 3,195 113 Total commercial real estate 7,107 89 5,491 118 Residential real estate: One- to four- family first liens 612 2 526 7 One- to four- family junior liens — — — — Total residential real estate 612 2 526 7 Consumer 21 — 16 — Total $ 21,303 $ 120 $ 17,720 $ 156
Schedule of PCD Loans	The following table summarizes the outstanding balance and carrying amount of our PCI loans that were identified prior to the adoption of ASC 326: December 31, 2019 (in thousands) Agricultural $ 904 Commercial and industrial 147 Commercial real estate 17,803 Residential real estate 4,136 Consumer 57 Outstanding balance 23,047 Carrying amount 22,551 Allowance for credit losses 1,250 Carrying amount, net of allowance for credit losses $ 21,301

Derivatives, Hedging Activiti_2

Derivatives, Hedging Activities and Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 As of December 31, 2019 Notional Amount Fair Value Notional Amount Fair Value (in thousands) Assets Liabilities Assets Liabilities Designated as hedging instruments Fair value hedges Interest rate swaps $ 25,744 $ — $ 2,926 $ 16,734 $ — $ 1,113 Cash flow hedges Interest rate swaps 30,000 — 864 — — — Total $ 55,744 $ — $ 3,790 $ 16,734 $ — $ 1,113 Not designated as hedging instruments: Interest rate swaps $ 342,670 $ 13,550 $ 13,692 $ 113,632 $ 1,824 $ 1,999 RPAs - protection sold 4,530 10 — 4,702 24 — RPAs - protection purchased 9,873 — 21 10,009 — 130 Total $ 357,073 $ 13,560 $ 13,713 $ 128,343 $ 1,848 $ 2,129
Schedule of Derivatives Instrument Impacts on Statements	The table below presents the effect of cash flow hedge accounting on AOCI for three months and nine months ended September 30, 2020 and 2019. 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 September 30, Three Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps $ 8 $ — Interest Expense $ (88) $ — 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 Nine Months Ended September 30, Nine Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps $ (1,009) $ — Interest Expense $ (145) $ — 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 September 30, For the Nine Months Ended September 30, 2020 2019 2020 2019 (in thousands) Interest Income Interest Expense Interest Income Interest Expense Interest Income Interest Expense Interest Income Interest Expense 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 $ (102) $ — $ (1) $ — $ (229) $ — $ (2) $ — The effects of fair value and cash flow hedging: Gain (loss) on fair value hedging relationships in subtopic 815-20: Interest contracts: Hedged items (174) — 617 — 1,814 — 1,412 — Derivative designated as hedging instruments 180 (618) — (1,813) — (1,414) — Income statement effect of cash flow hedging relationships in subtopic 815-20: Interest contracts: Amount reclassified from AOCI into income — 88 — — — 145 — —
Hedged Items In Fair Value Hedging Relationship	As of September 30, 2020, 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 $ 28,679 $ 2,924
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 September 30, For the Nine Months Ended September 30, (in thousands) 2020 2019 2020 2019 Interest rate swaps Other income $ (90) $ (96) $ 33 $ (226) RPAs Other income (3) (24) 94 (148) Total $ (93) $ (120) $ 127 $ (374)
Offsetting Derivative Assets And Liabilities	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 following table below presents gross derivatives and the respective collateral received or pledged in the form of other financial instruments as of September 30, 2020 and December 31, 2019, 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 Pledged Net Assets (Liabilities) As of September 30, 2020 Asset Derivatives $ 13,560 $ — $ 13,560 $ — $ — $ 13,560 Liability Derivatives (17,503) — (17,503) — (17,503) — As of December 31, 2019 Asset Derivatives $ 1,848 $ — $ 1,848 $ — $ — $ 1,848 Liability Derivatives (3,242) — (3,242) — (3,242) —

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the changes in the carrying amount of goodwill for the period indicated: Nine Months Ended September 30, (in thousands) 2020 Goodwill, beginning of period $ 91,918 Fair value adjustment (1) 2,059 Goodwill impairment (31,500) Total goodwill, end of period $ 62,477 (1) Goodwill adjustments consisted of the ATBancorp acquisition purchase accounting adjustments, which were finalized in the first quarter of 2020.
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 September 30, 2020 As of December 31, 2019 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (25,208) $ 16,537 $ 41,745 $ (21,032) $ 20,713 Customer relationship intangible 5,265 (2,324) 2,941 5,265 (1,195) 4,070 Other 2,700 (2,407) 293 2,700 (2,305) 395 $ 49,710 $ (29,939) $ 19,771 $ 49,710 $ (24,532) $ 25,178 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 September 30, 2020 As of December 31, 2019 (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Core deposit intangible $ 41,745 $ (25,208) $ 16,537 $ 41,745 $ (21,032) $ 20,713 Customer relationship intangible 5,265 (2,324) 2,941 5,265 (1,195) 4,070 Other 2,700 (2,407) 293 2,700 (2,305) 395 $ 49,710 $ (29,939) $ 19,771 $ 49,710 $ (24,532) $ 25,178 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 three months ending December 31, 2020 and the succeeding annual periods: Core Deposit Intangible Customer Relationship Intangible Other Total Estimated Remaining Amortization Expense for the Year Ending December 31, 2020 $ 1,231 $ 306 $ 31 $ 1,568 2021 4,190 1,062 106 5,358 2022 3,487 797 79 4,363 2023 2,833 518 51 3,402 2024 2,180 239 24 2,443 Thereafter 2,616 19 2 2,637 Total $ 16,537 $ 2,941 $ 293 $ 19,771

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Other Assets [Abstract]
Schedule of Other Assets	The components of the Company's other assets as of September 30, 2020 and December 31, 2019 were as follows: (in thousands) September 30, 2020 December 31, 2019 Bank-owned life insurance $ 82,942 $ 81,625 Interest receivable 21,112 18,525 FHLB stock 12,246 15,381 Mortgage servicing rights 5,274 7,026 Operating lease right-of-use assets, net 3,860 4,499 Federal and state income taxes, current 725 2,318 Federal and state income taxes, deferred 7,413 3,530 Derivative assets 13,560 1,848 Other receivables/assets 12,375 13,208 $ 159,507 $ 147,960

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2020
Deposits [Abstract]
Deposit Liabilities	The following table presents the composition of our deposits as of the dates indicated: (in thousands) As of September 30, 2020 As of December 31, 2019 Noninterest bearing deposits $ 864,504 $ 662,209 Interest checking deposits 1,230,146 962,830 Money market deposits 871,336 763,028 Savings deposits 486,876 387,142 Time deposits under $250,000 617,229 682,232 Time deposits of $250,000 or more 263,550 271,214 Total deposits $ 4,333,641 $ 3,728,655

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	9 Months Ended
	Sep. 30, 2020
Short-term Debt [Abstract]
Schedule of Short-term borrowings	The following table summarizes our short-term borrowings as of the dates indicated: September 30, 2020 December 31, 2019 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Securities sold under agreements to repurchase 0.35 % $ 183,893 1.06 % $ 117,249 Federal Home Loan Bank advances — — 1.73 22,100 Unsecured line of credit — — — — Total 0.35 % $ 183,893 1.17 % $ 139,349

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 ATBancorp Statutory Trust I $ 7,732 $ 6,841 Three-month LIBOR + 1.68% 1.93 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,836 Three-month LIBOR + 1.65% 1.90 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,758 Three-month LIBOR + 2.15% 2.37 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,820 Three-month LIBOR + 3.50% 3.75 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 1.84 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,719 December 31, 2019 ATBancorp Statutory Trust I $ 7,732 $ 6,814 Three-month LIBOR + 1.68% 3.57 % 06/15/2036 06/15/2011 ATBancorp Statutory Trust II 12,372 10,794 Three-month LIBOR + 1.65% 3.54 % 09/15/2037 06/15/2012 Barron Investment Capital Trust I 2,062 1,732 Three-month LIBOR + 2.15% 4.08 % 09/23/2036 09/23/2011 Central Bancshares Capital Trust II 7,217 6,783 Three-month LIBOR + 3.50% 5.39 % 03/15/2038 03/15/2013 MidWestOne Statutory Trust II 15,464 15,464 Three-month LIBOR + 1.59% 3.48 % 12/15/2037 12/15/2012 Total $ 44,847 $ 41,587 Long-term borrowings were as follows as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (in thousands) Weighted Average Rate Balance Weighted Average Rate Balance Finance lease payable 8.89 % $ 1,130 8.89 % $ 1,224 FHLB borrowings 1.89 101,222 2.25 145,700 Notes payable to unaffiliated bank 1.91 26,750 3.44 32,250 Total 1.96 % $ 129,102 2.51 % $ 179,174

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	Income tax expense (benefit) based on statutory rate for the three months and nine months ended September 30, 2020 and 2019 varied from the amount computed by applying the maximum effective federal income tax rate of 21%, to the income before income taxes, because of the following items: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2020 2019 2020 2019 (in thousands) Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income Income tax based on statutory rate $ (3,686) 21.0 % $ 3,267 21.0 % $ (1,568) 21.0 % $ 8,111 21.0 % Tax-exempt interest (801) 4.6 (791) (5.1) (2,147) 28.7 (1,732) (4.5) Bank-owned life insurance (111) 0.6 (108) (0.7) (353) 4.7 (289) (0.7) State income taxes, net of federal income tax benefit 735 (4.2) 833 5.4 1,280 (17.1) 2,063 5.3 Goodwill Impairment 6,615 (37.7) — — 6,615 (88.6) — — Non-deductible acquisition expenses — — 5 — — — 167 0.5 General business credits (551) 3.2 41 0.3 (1,322) 17.7 13 — Other 71 (0.4) 9 — 115 (1.5) 31 0.1 Total income tax expense $ 2,272 (12.9) % $ 3,256 20.9 % $ 2,620 (35.1) % $ 8,364 21.7 %

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2020
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 September 30, Nine Months Ended September 30, (dollars in thousands, except per share amounts) 2020 2019 2020 2019 Basic (Loss) Earnings Per Share: Net (loss) income $ (19,824) $ 12,300 $ (10,087) $ 30,259 Weighted average shares outstanding 16,099,324 16,200,667 16,111,591 14,434,411 Basic (loss) earnings per common share $ (1.23) $ 0.76 $ (0.63) $ 2.10 Diluted (Loss) Earnings Per Share: Net (loss) income $ (19,824) $ 12,300 $ (10,087) $ 30,259 Weighted average shares outstanding, including all dilutive potential shares 16,099,324 16,214,562 16,111,591 14,444,732 Diluted (loss) earnings per common share $ (1.23) $ 0.76 $ (0.63) $ 2.09
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 September 30, Nine Months Ended September 30, 2020 2020 Dilutive shares (1) 7,132 6,820 (1) Dilutive potential shares that were excluded from the computation of diluted earnings per common share for the three and nine months ended September 30, 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)	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020 and December 31, 2019, 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 September 30, 2020 Consolidated: Total capital/risk weighted assets $562,015 13.56% $435,338 10.50% N/A N/A Tier 1 capital/risk weighted assets 444,772 10.73 352,416 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 403,053 9.72 290,225 7.00 N/A N/A Tier 1 leverage capital/average assets 444,772 8.52 208,864 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $531,541 12.95% $431,130 10.50% $410,600 10.00% Tier 1 capital/risk weighted assets 482,406 11.75 349,010 8.50 328,480 8.00 Common equity tier 1 capital/risk weighted assets 482,406 11.75 287,420 7.00 266,890 6.50 Tier 1 leverage capital/average assets 482,406 9.26 208,318 4.00 260,398 5.00 At December 31, 2019 Consolidated: Total capital/risk weighted assets $463,601 11.34% $429,077 10.50% N/A N/A Tier 1 capital/risk weighted assets 428,021 10.47 347,348 8.50 N/A N/A Common equity tier 1 capital/risk weighted assets 386,434 9.46 286,051 7.00 N/A N/A Tier 1 leverage capital/average assets 428,021 9.48 180,529 4.00 N/A N/A MidWest One Bank: Total capital/risk weighted assets $482,106 11.83% $427,877 10.50% $407,502 10.00% Tier 1 capital/risk weighted assets 453,027 11.12 346,377 8.50 326,002 8.00 Common equity tier 1 capital/risk weighted assets 453,027 11.12 285,251 7.00 264,876 6.50 Tier 1 leverage capital/average assets 453,027 10.06 180,209 4.00 231,166 5.00

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2020
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: September 30, 2020 December 31, 2019 (in thousands) Commitments to extend credit $ 893,147 $ 859,212 Commitments to sell loans 13,096 5,400 Standby letters of credit 25,864 36,192 Total $ 932,107 $ 900,804

Fair Value of Financial Instr_2

Fair Value of Financial Instruments and Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Schedule of Fair Value Measured on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis comprise the following as of the dates indicated: Fair Value Measurement at September 30, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Available for sale debt securities: U.S. Government agencies and corporations $ 386 $ — $ 386 $ — State and political subdivisions 510,483 — 510,483 — Mortgage-backed securities 108,633 — 108,633 — Collateralized mortgage obligations 402,893 — 402,893 — Corporate debt securities 343,949 — 343,949 — Derivative assets 13,560 — 13,560 — Liabilities: Derivative liabilities $ 17,503 $ — $ 17,503 $ — Fair Value Measurement at December 31, 2019 Using (in thousands) Total Level 1 Level 2 Level 3 Assets: Debt securities available for sale: U.S. Government agencies and corporations $ 441 $ — $ 441 $ — State and political subdivisions 257,205 — 257,205 — Mortgage-backed securities 43,530 — 43,530 — Collateralized mortgage obligations 292,946 — 292,946 — Corporate debt securities 191,855 — 191,855 — Derivative assets 1,848 — 1,848 — Liabilities: Derivative liabilities $ 3,242 $ — $ 3,242 $ —
Schedule of Fair Value Measured on Nonrecurring Basis	The following tables present assets measured at fair value on a nonrecurring basis as of the dates indicated: Fair Value Measurement at September 30, 2020 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent individually analyzed loans $ 32,324 $ — $ — $ 32,324 Foreclosed assets, net 724 — — 724 Fair Value Measurement at December 31, 2019 Using (in thousands) Total Level 1 Level 2 Level 3 Collateral dependent impaired loans $ 6,749 $ — $ — $ 6,749 Foreclosed assets, net 3,706 — — 3,706
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 date indicated: Fair Value at (dollars in thousands) September 30, 2020 December 31, 2019 Valuation Techniques(s) Unobservable Input Range of Inputs Weighted Average Collateral dependent impaired loans $ 32,324 $ 6,749 Fair value of collateral Valuation adjustments — % - 75 % 22 % Foreclosed assets, net $ 724 3,706 Fair value of collateral Valuation adjustments 12 % - 55 % 31 %
Fair Value, by Balance Sheet Grouping	The carrying amount and estimated fair value of financial instruments at September 30, 2020 and December 31, 2019 were as follows: September 30, 2020 (in thousands) Carrying Estimated Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 134,862 $ 134,862 $ 134,862 $ — $ — Debt securities available for sale 1,366,344 1,366,344 — 1,366,344 — Loans held for sale 13,096 13,433 — 13,433 — Loans held for investment, net 3,478,932 3,530,722 — — 3,530,722 Interest receivable 21,112 21,112 — 21,112 — Federal Home Loan Bank stock 12,246 12,246 — 12,246 — Derivative assets 13,560 13,560 — 13,560 — Financial liabilities: Non-interest bearing deposits 864,504 864,504 864,504 — — Interest-bearing deposits 3,469,137 3,474,719 2,588,358 886,361 — Short-term borrowings 183,893 183,893 183,893 — — Finance leases payable 1,130 1,130 — 1,130 — Federal Home Loan Bank borrowings 101,222 104,618 — 104,618 — Junior subordinated notes issued to capital trusts 41,719 33,848 — 33,848 — Subordinated debentures 74,660 76,651 — 76,651 — Other long-term debt 26,750 26,750 — 26,750 — Derivative liabilities 17,503 17,503 — 17,503 — December 31, 2019 (in thousands) Carrying Amount Estimated Fair Value Level 1 Level 2 Level 3 Financial assets: Cash and cash equivalents $ 73,484 $ 73,484 $ 73,484 $ — $ — Debt securities available for sale 785,977 785,977 — 785,977 — Loans held for sale 5,400 5,476 — 5,476 — Loans held for investment, net 3,422,187 3,427,952 — — 3,427,952 Interest receivable 18,525 18,525 — 18,525 — Federal Home Loan Bank stock 15,381 15,381 — 15,381 — Derivative assets 1,848 1,848 — 1,848 — Financial liabilities: Non-interest bearing deposits 662,209 662,209 662,209 — — Interest-bearing deposits 3,066,446 3,066,427 2,113,000 953,427 — Short-term borrowings 139,349 139,349 139,349 — — Finance leases payable 1,224 1,224 — 1,224 — Federal Home Loan Bank borrowings 145,700 146,913 — 146,913 — Junior subordinated notes issued to capital trusts 41,587 39,391 — 39,391 — Subordinated debentures 10,899 11,083 — 11,083 — Other long-term debt 32,250 32,250 — 32,250 — Derivative liabilities 3,242 3,242 — 3,242 —

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Schedule of Lease Assets and Liabilities	Supplemental balance sheet information related to leases was as follows: (in thousands) Classification September 30, 2020 December 31, 2019 Lease Right-of-Use Assets Operating lease right-of-use assets Other assets $ 3,860 $ 4,499 Finance lease right-of-use asset Premises and equipment, net 573 637 Total right-of-use assets $ 4,433 $ 5,136 Lease Liabilities Operating lease liability Other liabilities $ 4,830 $ 5,430 Finance lease liability Long-term debt 1,130 1,225 Total lease liabilities $ 5,960 $ 6,655 Weighted-average remaining lease term Operating leases 8.78 years 8.90 years Finance lease 5.92 years 6.67 years Weighted-average discount rate Operating leases 3.87 % 3.78 % 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 Nine Months Ended September 30, September 30, (in thousands) 2020 2019 2020 2019 Lease Costs Operating lease cost $ 209 $ 303 $ 937 $ 755 Variable lease cost 42 52 189 118 Short-term lease cost — — — — Interest on lease liabilities (1) 25 28 78 85 Amortization of right-of-use assets 24 24 72 72 Net lease cost $ 300 $ 407 $ 1,276 $ 1,030 Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 443 $ 524 $ 1,598 $ 1,354 Operating cash flows from finance lease 25 41 78 124 Finance cash flows from finance lease 32 28 94 83 Right-of-use assets obtained in exchange for new operating lease liabilities 39 49 132 5,319 Right-of-use assets obtained in exchange for new finance lease liabilities — — — — (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 September 30, 2020 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2020 $ 58 $ 287 December 31, 2021 235 1,112 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 Thereafter 426 2,139 Total undiscounted lease payment $ 1,454 $ 6,165 Amounts representing interest (324) (1,335) Lease liability $ 1,130 $ 4,830
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 September 30, 2020 were as follows: (in thousands) Finance Leases Operating Leases Twelve Months Ended: December 31, 2020 $ 58 $ 287 December 31, 2021 235 1,112 December 31, 2022 240 993 December 31, 2023 245 932 December 31, 2024 250 702 Thereafter 426 2,139 Total undiscounted lease payment $ 1,454 $ 6,165 Amounts representing interest (324) (1,335) Lease liability $ 1,130 $ 4,830

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Thousands	Jul. 28, 2020USD ($)	May 01, 2019USD ($)shares	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Sep. 30, 2020USD ($)segment	Sep. 30, 2019USD ($)
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Goodwill impairment charges			$ 31,500	$ 0		$ 31,500	$ 0
Number of operating segments | segment						1
Subordinated debt
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Interest rate			6.50%			6.50%
Subordinated debt | 5.75% Fixed to floating subordinated notes
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Interest rate	5.75%
Subordinated debt | 5.75% Fixed to floating subordinated notes | Private placement
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Sale of equity	$ 65,000
MidWestOne Insurance Services Inc
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Gain on disposition of business					$ 1,100
ATBancorp
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of shares issued (in shares) | shares		4,117,536
Value of equity interest issued		$ 116,000
Cash consideration		$ 34,800

Effect of New Financial Accou_3

Effect of New Financial Accounting Standards (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Sep. 30, 2020	Dec. 31, 2019	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings		$ 175,017	$ 201,105
Allowance for credit losses on loans	$ 29,079	58,500	29,079	$ 55,644	$ 31,532	$ 28,691	$ 29,307
Liability for off-balance sheet credit exposures	0	4,500
Federal and state income taxes, deferred		$ 7,413	3,530
PCD assets			$ 22,551
Accounting standards update		us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201613Member
Agricultural
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	3,748	$ 1,414	$ 3,748	1,408	4,128	3,720	3,637
Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	8,394	16,639	8,394	18,709	8,994	7,633	7,478
Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	13,804	30,921	13,804	28,221	15,471	13,655	15,635
Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	2,685	8,278	2,685	6,074	2,563	3,377	2,349
Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	448	$ 1,248	448	$ 1,232	$ 376	$ 306	$ 208
Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings	(5,400)
Allowance for credit losses on loans	3,984		3,984
Liability for off-balance sheet credit exposures	3,433
Federal and state income taxes, deferred	1,900
PCD assets	(119)
Impact of ASC 326 Adoption | Agricultural
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	(2,557)		(2,557)
Impact of ASC 326 Adoption | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	2,728		2,728
Impact of ASC 326 Adoption | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	1,300		1,300
Impact of ASC 326 Adoption | Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	2,050		2,050
Impact of ASC 326 Adoption | Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	463		$ 463
As Reported Under ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	33,063
Liability for off-balance sheet credit exposures	3,433
As Reported Under ASC 326 | Agricultural
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	1,191
As Reported Under ASC 326 | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	11,122
As Reported Under ASC 326 | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	15,104
As Reported Under ASC 326 | Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	4,735
As Reported Under ASC 326 | Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	$ 911

Debt Securities - Schedule of A

Debt Securities - Schedule of Available for Sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of Available-for-sale Securities
Amortized Cost	$ 1,338,665	$ 780,061
Gross Unrealized Gains	30,169	8,359
Gross Unrealized Losses	2,490	2,443
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	1,366,344	785,977
U.S. Government agencies and corporations
Schedule of Available-for-sale Securities
Amortized Cost	378	439
Gross Unrealized Gains	8	2
Gross Unrealized Losses	0	0
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	386	441
State and political subdivisions
Schedule of Available-for-sale Securities
Amortized Cost	499,922	253,750
Gross Unrealized Gains	11,875	3,803
Gross Unrealized Losses	1,314	348
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	510,483	257,205
Mortgage-backed securities
Schedule of Available-for-sale Securities
Amortized Cost	106,997	43,009
Gross Unrealized Gains	1,759	536
Gross Unrealized Losses	123	15
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	108,633	43,530
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Amortized Cost	395,772	293,911
Gross Unrealized Gains	7,599	1,000
Gross Unrealized Losses	478	1,965
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	402,893	292,946
Corporate debt securities
Schedule of Available-for-sale Securities
Amortized Cost	335,596	188,952
Gross Unrealized Gains	8,928	3,018
Gross Unrealized Losses	575	115
Allowance for Credit Loss related to Debt Securities	0
Debt securities available for sale at fair value	$ 343,949	$ 191,855

Debt Securities - Additional In

Debt Securities - Additional Information (Details) $ in Thousands	Sep. 30, 2020USD ($)security	Dec. 31, 2019USD ($)security
Schedule of Available-for-sale Securities
Pledged securities	$ 434,500	$ 264,800
Securities in continuous unrealized loss position | security	98	94
Accumulated unrealized losses	$ 2,490	$ 2,443
Interest receivable	$ 21,112	$ 18,525
State and political subdivisions
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	68	47
Accumulated unrealized losses	$ 1,314	$ 348
Mortgage-backed securities
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	7	7
Accumulated unrealized losses	$ 123	$ 15
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	5	33
Accumulated unrealized losses	$ 478	$ 1,965
Corporate debt securities
Schedule of Available-for-sale Securities
Securities in continuous unrealized loss position | security	18	7
Accumulated unrealized losses	$ 575	$ 115
Debt securities
Schedule of Available-for-sale Securities
Interest receivable	6,100
Mortgage backed securities and collateralized mortgage obligations
Schedule of Available-for-sale Securities
Accumulated unrealized losses	$ 600

Debt Securities - Available for

Debt Securities - Available for Sale Securities in Continuous Loss Position (Details) $ in Thousands	Sep. 30, 2020USD ($)security	Dec. 31, 2019USD ($)security
Schedule of Available-for-sale Securities
Number of Securities | security	98	94
Less than 12 months, fair value	$ 220,576	$ 138,531
Less than 12 months, unrealized losses	2,174	1,067
12 Months or more, fair value	10,776	77,869
12 Months or more, unrealized loss	316	1,376
Fair Value	231,352	216,400
Unrealized Losses	$ 2,490	$ 2,443
State and political subdivisions
Schedule of Available-for-sale Securities
Number of Securities | security	68	47
Less than 12 months, fair value	$ 90,190	$ 27,161
Less than 12 months, unrealized losses	1,314	322
12 Months or more, fair value		2,112
12 Months or more, unrealized loss	0	26
Fair Value	90,190	29,273
Unrealized Losses	$ 1,314	$ 348
Mortgage-backed securities
Schedule of Available-for-sale Securities
Number of Securities | security	7	7
Less than 12 months, fair value	$ 25,209	$ 963
Less than 12 months, unrealized losses	123	12
12 Months or more, fair value	16	1,365
12 Months or more, unrealized loss	0	3
Fair Value	25,225	2,328
Unrealized Losses	$ 123	$ 15
Collateralized mortgage obligations
Schedule of Available-for-sale Securities
Number of Securities | security	5	33
Less than 12 months, fair value	$ 60,760	$ 103,395
Less than 12 months, unrealized losses	249	719
12 Months or more, fair value	9,444	65,604
12 Months or more, unrealized loss	229	1,246
Fair Value	70,204	168,999
Unrealized Losses	$ 478	$ 1,965
Corporate debt securities
Schedule of Available-for-sale Securities
Number of Securities | security	18	7
Less than 12 months, fair value	$ 44,417	$ 7,012
Less than 12 months, unrealized losses	488	14
12 Months or more, fair value	1,316	8,788
12 Months or more, unrealized loss	87	101
Fair Value	45,733	15,800
Unrealized Losses	$ 575	$ 115

Debt Securities - Proceeds and

Debt Securities - Proceeds and Gross Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Debt Securities [Abstract]
Proceeds from sales of debt securities available for sale	$ 4,885	$ 19	$ 27,020	$ 125,433
Gross realized gains from sales of debt securities available for sale	105	18	255	124
Gross realized losses from sales of debt securities available for sale	(10)	(1)	(123)	(56)
Net realized gain from sales of debt securities available for sale	$ 95	$ 17	$ 132	$ 68

Debt Securities - Investments C

Debt Securities - Investments Classified by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less, amortized cost	$ 52,185
Due after one year through five years, amortized cost	252,498
Due after five years through ten years, amortized cost	220,385
Due after ten years, amortized cost	310,828
Total maturing securities, amortized cost	835,896
Amortized Cost	1,338,665	$ 780,061
Fair Value
Due in one year or less, estimated fair value	52,578
Due after one year through five years, estimated fair value	260,915
Due after five years through ten years, estimated fair value	225,480
Due after ten years, estimated fair value	315,845
Total maturing securities, fair value	854,818
Debt securities available for sale at fair value	1,366,344	785,977
Mortgage-backed securities
Amortized Cost
Amortized Cost	106,997	43,009
Fair Value
Debt securities available for sale at fair value	108,633	43,530
Collateralized mortgage obligations
Amortized Cost
Amortized Cost	395,772	293,911
Fair Value
Debt securities available for sale at fair value	$ 402,893	$ 292,946

Loans Receivable and the Allo_3

Loans Receivable and the Allowance for Credit Losses - Composition of Loans by Lending Classification (Details) - USD ($)	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 3,537,432,000			$ 3,451,266,000
Allowance for credit losses	(58,500,000)	$ (55,644,000)	$ (29,079,000)	(29,079,000)	$ (31,532,000)	$ (28,691,000)	$ (29,307,000)
Total loans held for investment, net	3,478,932,000			3,422,187,000
Loans pledged for Federal Home Loan Bank debt	858,100,000			945,900,000
Loans and leases receivable, impaired, commitment to lend	0
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	129,453,000			140,446,000
Allowance for credit losses	(1,414,000)	(1,408,000)	(3,748,000)	(3,748,000)	(4,128,000)	(3,720,000)	(3,637,000)
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,103,102,000			835,236,000
Allowance for credit losses	(16,639,000)	(18,709,000)	(8,394,000)	(8,394,000)	(8,994,000)	(7,633,000)	(7,478,000)
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,707,035,000			1,814,859,000
Allowance for credit losses	(30,921,000)	(28,221,000)	(13,804,000)	(13,804,000)	(15,471,000)	(13,655,000)	(15,635,000)
Commercial real estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	191,423,000			298,077,000
Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	152,362,000			181,885,000
Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	235,241,000			227,407,000
Commercial real estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,128,009,000			1,107,490,000
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	521,570,000			577,799,000
Allowance for credit losses	(8,278,000)	(6,074,000)	(2,685,000)	(2,685,000)	(2,563,000)	(3,377,000)	(2,349,000)
Residential real estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	371,390,000			407,418,000
Residential real estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	150,180,000			170,381,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	76,272,000			82,926,000
Allowance for credit losses	$ (1,248,000)	$ (1,232,000)	$ (448,000)	$ (448,000)	$ (376,000)	$ (306,000)	$ (208,000)

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	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due
Loans current	$ 3,502,491	$ 3,420,971
Loans held for investment, net of unearned income	3,537,432	3,451,266
90 Days or More Past Due And Accruing	2,593	136
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	6,838	10,045
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,965	2,283
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	25,138	17,967
Agricultural
Financing Receivable, Recorded Investment, Past Due
Loans current	127,448	137,715
Loans held for investment, net of unearned income	129,453	140,446
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	390	975
Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	339	0
Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,276	1,756
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due
Loans current	1,098,272	828,842
Loans held for investment, net of unearned income	1,103,102	835,236
90 Days or More Past Due And Accruing	5	0
Commercial and industrial | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,027	846
Commercial and industrial | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	105	270
Commercial and industrial | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	3,698	5,278
Commercial real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	1,686,926	1,799,793
Loans held for investment, net of unearned income	1,707,035	1,814,859
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	2,884	4,977
Commercial real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,181	968
Commercial real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	16,044	9,121
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment, Past Due
Loans current	188,115	294,995
Loans held for investment, net of unearned income	191,423	298,077
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	1,774	2,256
Commercial real estate | Construction & development | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	825	621
Commercial real estate | Construction & development | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	709	205
Commercial real estate | Farmland
Financing Receivable, Recorded Investment, Past Due
Loans current	142,470	175,281
Loans held for investment, net of unearned income	152,362	181,885
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	114	362
Commercial real estate | Farmland | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	353	0
Commercial real estate | Farmland | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	9,425	6,242
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due
Loans current	235,241	227,013
Loans held for investment, net of unearned income	235,241	227,407
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	0	394
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	1,121,100	1,102,504
Loans held for investment, net of unearned income	1,128,009	1,107,490
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	996	1,965
Commercial real estate | Commercial real estate-other | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	3	347
Commercial real estate | Commercial real estate-other | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	5,910	2,674
Residential real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	513,767	572,063
Loans held for investment, net of unearned income	521,570	577,799
90 Days or More Past Due And Accruing	2,588	124
Residential real estate | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,459	3,097
Residential real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,317	965
Residential real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	4,027	1,674
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment, Past Due
Loans current	364,393	402,471
Loans held for investment, net of unearned income	371,390	407,418
90 Days or More Past Due And Accruing	2,588	99
Residential real estate | One- to four- family first liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,856	2,579
Residential real estate | One- to four- family first liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,271	857
Residential real estate | One- to four- family first liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	3,870	1,511
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment, Past Due
Loans current	149,374	169,592
Loans held for investment, net of unearned income	150,180	170,381
90 Days or More Past Due And Accruing	0	25
Residential real estate | One- to four- family junior liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	603	518
Residential real estate | One- to four- family junior liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	46	108
Residential real estate | One- to four- family junior liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	157	163
Consumer
Financing Receivable, Recorded Investment, Past Due
Loans current	76,078	82,558
Loans held for investment, net of unearned income	76,272	82,926
90 Days or More Past Due And Accruing	0	12
Consumer | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	78	150
Consumer | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	23	80
Consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	$ 93	$ 138

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	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	$ 39,071	$ 39,071	$ 41,483
Nonaccrual with no Allowance for Credit Losses	22,864	22,864
90 Days or More Past Due And Accruing	2,593	2,593	136
Interest Income Recognized on Nonaccrual	130	526
Agricultural
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	2,787	2,787	2,894
Nonaccrual with no Allowance for Credit Losses	1,576	1,576
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	14	94
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	8,725	8,725	13,276
Nonaccrual with no Allowance for Credit Losses	4,825	4,825
90 Days or More Past Due And Accruing	5	5	0
Interest Income Recognized on Nonaccrual	49	150
Commercial real estate
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	24,863	24,863	22,037
Nonaccrual with no Allowance for Credit Losses	16,242	16,242
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	36	195
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	1,387	1,387	1,494
Nonaccrual with no Allowance for Credit Losses	1,007	1,007
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	5	46
Commercial real estate | Farmland
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	13,693	13,693	10,402
Nonaccrual with no Allowance for Credit Losses	12,385	12,385
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	23	116
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	0	0	0
Nonaccrual with no Allowance for Credit Losses	0	0
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	0	1
Commercial real estate | Commercial real estate-other
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	9,783	9,783	10,141
Nonaccrual with no Allowance for Credit Losses	2,850	2,850
90 Days or More Past Due And Accruing	0	0	0
Interest Income Recognized on Nonaccrual	8	32
Residential real estate
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	2,551	2,551	3,070
Nonaccrual with no Allowance for Credit Losses	208	208
90 Days or More Past Due And Accruing	2,588	2,588	124
Interest Income Recognized on Nonaccrual	30	78
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	1,999	1,999	2,557
Nonaccrual with no Allowance for Credit Losses	207	207
90 Days or More Past Due And Accruing	2,588	2,588	99
Interest Income Recognized on Nonaccrual	21	62
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	552	552	513
Nonaccrual with no Allowance for Credit Losses	1	1
90 Days or More Past Due And Accruing	0	0	25
Interest Income Recognized on Nonaccrual	9	16
Consumer
Financing Receivable, Recorded Investment, Past Due
Nonaccrual	145	145	206
Nonaccrual with no Allowance for Credit Losses	13	13
90 Days or More Past Due And Accruing	0	0	$ 12
Interest Income Recognized on Nonaccrual	$ 1	$ 9

Loans Receivable and the Allo_6

Loans Receivable and the Allowance for Credit Losses - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment
2020	$ 1,545,799
2019	467,884
2018	285,002
2017	265,849
2016	198,201
Prior	358,787
Revolving Loans	415,910
Loans, gross	3,537,432	$ 3,451,266
Performing
Financing Receivable, Recorded Investment
2020	135,749
2019	80,219
2018	72,847
2017	54,503
2016	46,672
Prior	88,314
Revolving Loans	114,253
Loans, gross	592,557
Nonperforming
Financing Receivable, Recorded Investment
2020	67
2019	100
2018	607
2017	862
2016	651
Prior	2,828
Revolving Loans	170
Loans, gross	5,285
Pass
Financing Receivable, Recorded Investment
2020	1,251,478
2019	348,106
2018	183,708
2017	198,453
2016	142,611
Prior	241,265
Revolving Loans	272,433
Loans, gross	2,638,054	3,246,524
Special mention / watch
Financing Receivable, Recorded Investment
2020	101,136
2019	23,507
2018	15,209
2017	8,040
2016	6,809
Prior	6,813
Revolving Loans	15,188
Loans, gross	176,702	121,709
Substandard
Financing Receivable, Recorded Investment
2020	57,369
2019	15,952
2018	12,631
2017	3,990
2016	1,458
Prior	19,564
Revolving Loans	13,865
Loans, gross	124,829	82,813
Doubtful
Financing Receivable, Recorded Investment
2020	0
2017	1
Prior	3
Revolving Loans	1
Loans, gross	5	184
Loss
Financing Receivable, Recorded Investment
Loans, gross		36
Agricultural
Financing Receivable, Recorded Investment
2020	27,809
2019	11,732
2018	3,864
2017	2,912
2016	2,330
Prior	3,730
Revolving Loans	77,076
Loans, gross	129,453	140,446
Agricultural | Pass
Financing Receivable, Recorded Investment
2020	18,711
2019	9,402
2018	3,467
2017	2,612
2016	1,607
Prior	2,392
Revolving Loans	66,182
Loans, gross	104,373	117,374
Agricultural | Special mention / watch
Financing Receivable, Recorded Investment
2020	5,268
2019	1,456
2018	125
2017	113
2016	593
Prior	1,110
Revolving Loans	7,885
Loans, gross	16,550	13,292
Agricultural | Substandard
Financing Receivable, Recorded Investment
2020	3,830
2019	874
2018	272
2017	187
2016	130
Prior	227
Revolving Loans	3,009
Loans, gross	8,529	9,780
Agricultural | Doubtful
Financing Receivable, Recorded Investment
2020	0
Prior	1
Loans, gross	1	0
Agricultural | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial and industrial
Financing Receivable, Recorded Investment
2020	559,627
2019	115,932
2018	63,063
2017	74,943
2016	41,683
Prior	101,614
Revolving Loans	146,240
Loans, gross	1,103,102	835,236
Commercial and industrial | Pass
Financing Receivable, Recorded Investment
2020	552,011
2019	113,602
2018	61,017
2017	71,706
2016	40,276
Prior	96,039
Revolving Loans	130,932
Loans, gross	1,065,583	794,526
Commercial and industrial | Special mention / watch
Financing Receivable, Recorded Investment
2020	3,770
2019	679
2018	1,437
2017	2,395
2016	869
Prior	1,272
Revolving Loans	6,065
Loans, gross	16,487	19,038
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment
2020	3,846
2019	1,651
2018	609
2017	841
2016	538
Prior	4,301
Revolving Loans	9,242
Loans, gross	21,028	21,635
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment
2020	0
2017	1
Prior	2
Revolving Loans	1
Loans, gross	4	1
Commercial and industrial | Loss
Financing Receivable, Recorded Investment
Loans, gross		36
Commercial real estate
Financing Receivable, Recorded Investment
Loans, gross	1,707,035	1,814,859
Commercial real estate | Pass
Financing Receivable, Recorded Investment
Loans, gross		1,687,570
Commercial real estate | Special mention / watch
Financing Receivable, Recorded Investment
Loans, gross		83,511
Commercial real estate | Substandard
Financing Receivable, Recorded Investment
Loans, gross		43,778
Commercial real estate | Doubtful
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial real estate | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment
2020	92,094
2019	49,646
2018	20,920
2017	4,356
2016	940
Prior	1,236
Revolving Loans	22,231
Loans, gross	191,423	298,077
Commercial real estate | Construction & development | Pass
Financing Receivable, Recorded Investment
2020	86,471
2019	47,688
2018	20,154
2017	4,356
2016	929
Prior	1,165
Revolving Loans	21,666
Loans, gross	182,429	283,921
Commercial real estate | Construction & development | Special mention / watch
Financing Receivable, Recorded Investment
2020	4,570
2019	461
2018	546
2016	11
Prior	33
Loans, gross	5,621	11,423
Commercial real estate | Construction & development | Substandard
Financing Receivable, Recorded Investment
2020	1,053
2019	1,497
2018	220
Prior	38
Revolving Loans	565
Loans, gross	3,373	2,733
Commercial real estate | Construction & development | Doubtful
Financing Receivable, Recorded Investment
2020	0
Loans, gross	0	0
Commercial real estate | Construction & development | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial real estate | Farmland
Financing Receivable, Recorded Investment
2020	49,747
2019	37,030
2018	17,077
2017	14,334
2016	9,909
Prior	22,122
Revolving Loans	2,143
Loans, gross	152,362	181,885
Commercial real estate | Farmland | Pass
Financing Receivable, Recorded Investment
2020	39,115
2019	28,158
2018	11,528
2017	11,938
2016	8,493
Prior	16,116
Revolving Loans	1,740
Loans, gross	117,088	141,107
Commercial real estate | Farmland | Special mention / watch
Financing Receivable, Recorded Investment
2020	7,976
2019	4,709
2018	1,040
2017	667
2016	1,212
Prior	239
Revolving Loans	353
Loans, gross	16,196	21,307
Commercial real estate | Farmland | Substandard
Financing Receivable, Recorded Investment
2020	2,656
2019	4,163
2018	4,509
2017	1,729
2016	204
Prior	5,767
Revolving Loans	50
Loans, gross	19,078	19,471
Commercial real estate | Farmland | Doubtful
Financing Receivable, Recorded Investment
2020	0
Loans, gross	0	0
Commercial real estate | Farmland | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment
2020	132,734
2019	18,505
2018	18,183
2017	17,687
2016	16,074
Prior	21,446
Revolving Loans	10,612
Loans, gross	235,241	227,407
Commercial real estate | Multifamily | Pass
Financing Receivable, Recorded Investment
2020	131,319
2019	18,505
2018	18,183
2017	17,687
2016	16,004
Prior	21,446
Revolving Loans	10,612
Loans, gross	233,756	226,124
Commercial real estate | Multifamily | Special mention / watch
Financing Receivable, Recorded Investment
2020	346
2016	70
Loans, gross	416	90
Commercial real estate | Multifamily | Substandard
Financing Receivable, Recorded Investment
2020	1,069
Loans, gross	1,069	1,193
Commercial real estate | Multifamily | Doubtful
Financing Receivable, Recorded Investment
2020	0
Loans, gross	0	0
Commercial real estate | Multifamily | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Commercial real estate | Commercial real estate-other
Financing Receivable, Recorded Investment
2020	547,972
2019	154,720
2018	88,441
2017	96,252
2016	79,942
Prior	117,497
Revolving Loans	43,185
Loans, gross	1,128,009	1,107,490
Commercial real estate | Commercial real estate-other | Pass
Financing Receivable, Recorded Investment
2020	423,851
2019	130,751
2018	69,359
2017	90,154
2016	75,302
Prior	104,107
Revolving Loans	41,301
Loans, gross	934,825	1,036,418
Commercial real estate | Commercial real estate-other | Special mention / watch
Financing Receivable, Recorded Investment
2020	79,206
2019	16,202
2018	12,061
2017	4,865
2016	4,054
Prior	4,159
Revolving Loans	885
Loans, gross	121,432	50,691
Commercial real estate | Commercial real estate-other | Substandard
Financing Receivable, Recorded Investment
2020	44,915
2019	7,767
2018	7,021
2017	1,233
2016	586
Prior	9,231
Revolving Loans	999
Loans, gross	71,752	20,381
Commercial real estate | Commercial real estate-other | Doubtful
Financing Receivable, Recorded Investment
2020	0
Loans, gross	0	0
Commercial real estate | Commercial real estate-other | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Residential real estate
Financing Receivable, Recorded Investment
Loans, gross	521,570	577,799
Residential real estate | Pass
Financing Receivable, Recorded Investment
Loans, gross		564,404
Residential real estate | Special mention / watch
Financing Receivable, Recorded Investment
Loans, gross		5,829
Residential real estate | Substandard
Financing Receivable, Recorded Investment
Loans, gross		7,402
Residential real estate | Doubtful
Financing Receivable, Recorded Investment
Loans, gross		164
Residential real estate | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment
2020	98,786
2019	55,059
2018	47,233
2017	42,525
2016	40,340
Prior	77,651
Revolving Loans	9,796
Loans, gross	371,390	407,418
Residential real estate | One- to four- family first liens | Performing
Financing Receivable, Recorded Investment
2020	98,719
2019	54,993
2018	46,672
2017	41,713
2016	39,818
Prior	75,091
Revolving Loans	9,796
Loans, gross	366,802
Residential real estate | One- to four- family first liens | Nonperforming
Financing Receivable, Recorded Investment
2020	67
2019	66
2018	561
2017	812
2016	522
Prior	2,560
Revolving Loans	0
Loans, gross	4,588
Residential real estate | One- to four- family first liens | Pass
Financing Receivable, Recorded Investment
Loans, gross		396,175
Residential real estate | One- to four- family first liens | Special mention / watch
Financing Receivable, Recorded Investment
Loans, gross		4,547
Residential real estate | One- to four- family first liens | Substandard
Financing Receivable, Recorded Investment
Loans, gross		6,532
Residential real estate | One- to four- family first liens | Doubtful
Financing Receivable, Recorded Investment
Loans, gross		164
Residential real estate | One- to four- family first liens | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment
2020	15,090
2019	8,971
2018	14,175
2017	7,026
2016	3,938
Prior	7,006
Revolving Loans	93,974
Loans, gross	150,180	170,381
Residential real estate | One- to four- family junior liens | Performing
Financing Receivable, Recorded Investment
2020	15,090
2019	8,971
2018	14,175
2017	6,994
2016	3,821
Prior	6,773
Revolving Loans	93,804
Loans, gross	149,628
Residential real estate | One- to four- family junior liens | Nonperforming
Financing Receivable, Recorded Investment
2020	0
2019	0
2018	0
2017	32
2016	117
Prior	233
Revolving Loans	170
Loans, gross	552
Residential real estate | One- to four- family junior liens | Pass
Financing Receivable, Recorded Investment
Loans, gross		168,229
Residential real estate | One- to four- family junior liens | Special mention / watch
Financing Receivable, Recorded Investment
Loans, gross		1,282
Residential real estate | One- to four- family junior liens | Substandard
Financing Receivable, Recorded Investment
Loans, gross		870
Residential real estate | One- to four- family junior liens | Doubtful
Financing Receivable, Recorded Investment
Loans, gross		0
Residential real estate | One- to four- family junior liens | Loss
Financing Receivable, Recorded Investment
Loans, gross		0
Consumer
Financing Receivable, Recorded Investment
2020	21,940
2019	16,289
2018	12,046
2017	5,814
2016	3,045
Prior	6,485
Revolving Loans	10,653
Loans, gross	76,272	82,926
Consumer | Performing
Financing Receivable, Recorded Investment
2020	21,940
2019	16,255
2018	12,000
2017	5,796
2016	3,033
Prior	6,450
Revolving Loans	10,653
Loans, gross	76,127
Consumer | Nonperforming
Financing Receivable, Recorded Investment
2020	0
2019	34
2018	46
2017	18
2016	12
Prior	35
Revolving Loans	0
Loans, gross	$ 145
Consumer | Pass
Financing Receivable, Recorded Investment
Loans, gross		82,650
Consumer | Special mention / watch
Financing Receivable, Recorded Investment
Loans, gross		39
Consumer | Substandard
Financing Receivable, Recorded Investment
Loans, gross		218
Consumer | Doubtful
Financing Receivable, Recorded Investment
Loans, gross		19
Consumer | Loss
Financing Receivable, Recorded Investment
Loans, gross		$ 0

Loans Receivable and the Allo_7

Loans Receivable and the Allowance for Credit Losses - Activity in Allowance for Credit Losses (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 55,644,000	$ 28,691,000	$ 29,079,000	$ 29,307,000	$ 29,307,000
Charge-offs	(2,188,000)	(1,635,000)	(5,788,000)	(5,178,000)
Recoveries	347,000	212,000	882,000	849,000
Credit loss expense	4,697,000	4,264,000	30,343,000	6,554,000
Ending balance	58,500,000	31,532,000	$ 58,500,000	31,532,000	$ 29,079,000
Accounting standards update			us-gaap:AccountingStandardsUpdate201613Member		us-gaap:AccountingStandardsUpdate201613Member
Credit loss expense, off balance sheet credit exposure	300,000		$ 1,100,000	0
Loans receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Accrued interest receivable	14,800,000		14,800,000
Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			3,984,000
Ending balance					$ 3,984,000
Agricultural
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,408,000	3,720,000	3,748,000	3,637,000	3,637,000
Charge-offs	(746,000)	(986,000)	(939,000)	(1,137,000)
Recoveries	103,000	22,000	129,000	31,000
Credit loss expense	649,000	1,372,000	1,033,000	1,597,000
Ending balance	1,414,000	4,128,000	1,414,000	4,128,000	3,748,000
Agricultural | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			(2,557,000)
Ending balance					(2,557,000)
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	18,709,000	7,633,000	8,394,000	7,478,000	7,478,000
Charge-offs	(983,000)	(328,000)	(2,356,000)	(2,441,000)
Recoveries	180,000	9,000	559,000	158,000
Credit loss expense	(1,267,000)	1,680,000	7,314,000	3,799,000
Ending balance	16,639,000	8,994,000	16,639,000	8,994,000	8,394,000
Commercial and industrial | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			2,728,000
Ending balance					2,728,000
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	28,221,000	13,655,000	13,804,000	15,635,000	15,635,000
Charge-offs	(275,000)		(1,787,000)	(960,000)
Recoveries	9,000	8,000	28,000	272,000
Credit loss expense	2,966,000	1,808,000	17,576,000	524,000
Ending balance	30,921,000	15,471,000	30,921,000	15,471,000	13,804,000
Commercial real estate | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			1,300,000
Ending balance					1,300,000
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,074,000	3,377,000	2,685,000	2,349,000	2,349,000
Charge-offs	(83,000)	(121,000)	(186,000)	(171,000)
Recoveries	14,000	49,000	29,000	67,000
Credit loss expense	2,273,000	(742,000)	3,700,000	318,000
Ending balance	8,278,000	2,563,000	8,278,000	2,563,000	2,685,000
Residential real estate | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			2,050,000
Ending balance					2,050,000
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,232,000	306,000	448,000	208,000	208,000
Charge-offs	(101,000)	(200,000)	(520,000)	(469,000)
Recoveries	41,000	124,000	137,000	321,000
Credit loss expense	76,000	146,000	720,000	316,000
Ending balance	$ 1,248,000	$ 376,000	1,248,000	$ 376,000	448,000
Consumer | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 463,000
Ending balance					$ 463,000

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	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Loans held for investment, net of unearned income
Individually evaluated for impairment	$ 33,558			$ 33,495
Collectively evaluated for impairment	3,503,874			3,395,220
Loans, gross	3,537,432			3,451,266
Allowance for credit losses:
Individually evaluated for impairment	1,234			3,663
Collectively evaluated for impairment	57,266			24,166
Allowance for credit losses on loans	58,500	$ 55,644	$ 29,079	29,079	$ 31,532	$ 28,691	$ 29,307
Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				22,551
Allowance for credit losses:
Allowance for credit losses on loans				1,250
Agricultural
Loans held for investment, net of unearned income
Individually evaluated for impairment	2,161			4,312
Collectively evaluated for impairment	127,292			135,246
Loans, gross	129,453			140,446
Allowance for credit losses:
Individually evaluated for impairment	55			212
Collectively evaluated for impairment	1,359			3,536
Allowance for credit losses on loans	1,414	1,408	3,748	3,748	4,128	3,720	3,637
Agricultural | Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				888
Allowance for credit losses:
Allowance for credit losses on loans				0
Commercial and industrial
Loans held for investment, net of unearned income
Individually evaluated for impairment	7,774			12,242
Collectively evaluated for impairment	1,095,328			822,939
Loans, gross	1,103,102			835,236
Allowance for credit losses:
Individually evaluated for impairment	504			2,198
Collectively evaluated for impairment	16,135			6,194
Allowance for credit losses on loans	16,639	18,709	8,394	8,394	8,994	7,633	7,478
Commercial and industrial | Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				55
Allowance for credit losses:
Allowance for credit losses on loans				2
Commercial real estate
Loans held for investment, net of unearned income
Individually evaluated for impairment	23,412			16,082
Collectively evaluated for impairment	1,683,623			1,781,306
Loans, gross	1,707,035			1,814,859
Allowance for credit losses:
Individually evaluated for impairment	675			1,180
Collectively evaluated for impairment	30,246			11,836
Allowance for credit losses on loans	30,921	28,221	13,804	13,804	15,471	13,655	15,635
Commercial real estate | Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				17,471
Allowance for credit losses:
Allowance for credit losses on loans				788
Residential real estate
Loans held for investment, net of unearned income
Individually evaluated for impairment	204			838
Collectively evaluated for impairment	521,366			572,865
Loans, gross	521,570			577,799
Allowance for credit losses:
Individually evaluated for impairment				73
Collectively evaluated for impairment	8,278			2,152
Allowance for credit losses on loans	8,278	6,074	2,685	2,685	2,563	3,377	2,349
Residential real estate | Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				4,096
Allowance for credit losses:
Allowance for credit losses on loans				460
Consumer
Loans held for investment, net of unearned income
Individually evaluated for impairment	7			21
Collectively evaluated for impairment	76,265			82,864
Loans, gross	76,272			82,926
Allowance for credit losses:
Collectively evaluated for impairment	1,248			448
Allowance for credit losses on loans	$ 1,248	$ 1,232	$ 448	448	$ 376	$ 306	$ 208
Consumer | Purchased credit impaired loans
Loans held for investment, net of unearned income
Loans, gross				41
Allowance for credit losses:
Allowance for credit losses on loans				$ 0

Loans Receivable and the Allo_9

Loans Receivable and the Allowance for Credit Losses - Primary Type of Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	$ 3,478,932			$ 3,422,187
Allowance for credit losses on loans	58,500	$ 55,644	$ 29,079	29,079	$ 31,532	$ 28,691	$ 29,307
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	23,286
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	6,678
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	3,594
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	33,558
Allowance for credit losses on loans	1,234
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	1,414	1,408	3,748	3,748	4,128	3,720	3,637
Agricultural | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	767
Agricultural | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	741
Agricultural | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	653
Agricultural | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	2,161
Allowance for credit losses on loans	55
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	16,639	18,709	8,394	8,394	8,994	7,633	7,478
Commercial and industrial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	682
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	4,151
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	2,941
Commercial and industrial | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	7,774
Allowance for credit losses on loans	504
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	30,921	28,221	13,804	13,804	15,471	13,655	15,635
Commercial real estate | Construction & development | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	1,006
Commercial real estate | Construction & development | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Construction & development | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Construction & development | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	1,006
Allowance for credit losses on loans	0
Commercial real estate | Farmland | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	11,826
Commercial real estate | Farmland | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	1,345
Commercial real estate | Farmland | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Farmland | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	13,171
Allowance for credit losses on loans	88
Commercial real estate | Multifamily | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Multifamily | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Multifamily | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Multifamily | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Allowance for credit losses on loans	0
Commercial real estate | Commercial real estate-other | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	8,794
Commercial real estate | Commercial real estate-other | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	441
Commercial real estate | Commercial real estate-other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Commercial real estate | Commercial real estate-other | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	9,235
Allowance for credit losses on loans	587
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	8,278	6,074	2,685	2,685	2,563	3,377	2,349
Residential real estate | One- to four- family first liens | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	204
Residential real estate | One- to four- family first liens | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Residential real estate | One- to four- family first liens | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Residential real estate | One- to four- family first liens | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	204
Allowance for credit losses on loans	0
Residential real estate | One- to four- family junior liens | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Residential real estate | One- to four- family junior liens | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Residential real estate | One- to four- family junior liens | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Residential real estate | One- to four- family junior liens | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Allowance for credit losses on loans	0
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses on loans	1,248	$ 1,232	$ 448	$ 448	$ 376	$ 306	$ 208
Consumer | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	7
Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	0
Consumer | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	7
Allowance for credit losses on loans	$ 0

Loans Receivable and the All_10

Loans Receivable and the Allowance for Credit Losses - TDR Disclosures (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)contractsecurity	Sep. 30, 2019USD ($)contractsecurity	Sep. 30, 2020USD ($)contractsecurity	Sep. 30, 2019USD ($)contractsecurity	Dec. 31, 2019USD ($)
Receivables [Abstract]
Troubled Debt Restructurings	$ 9,400		$ 9,400		$ 11,000
Financing Receivable, Modifications
Number of Contracts | contract	4	10	12	15
Pre-Modification Outstanding Recorded Investment	$ 480	$ 2,367	$ 1,947	$ 2,683
Post-Modification Outstanding Recorded Investment	$ 505	$ 2,367	$ 2,021	$ 2,682
TDR, subsequent to restructure, number of contracts | security	4	12	4	12
TDR, subsequent restructure	$ 412	$ 742	$ 412	$ 742
Financing receivable, TDR	9,400		9,400		$ 11,000
COVID-19
Financing Receivable, Modifications
Amount of deferrals	$ 115,300		$ 115,300
One- to four- family first liens
Financing Receivable, Modifications
Number of Contracts | contract	2	3	2	3
Pre-Modification Outstanding Recorded Investment	$ 203	$ 239	$ 203	$ 239
One- to four- family junior liens
Financing Receivable, Modifications
Number of Contracts | contract		2		2
Pre-Modification Outstanding Recorded Investment		$ 30		$ 30
Commercial and industrial | Interest Rate Reduction
Financing Receivable, Modifications
Number of Contracts | contract	1		1
Pre-Modification Outstanding Recorded Investment	$ 143		$ 143
Post-Modification Outstanding Recorded Investment	$ 143		$ 143
Commercial and industrial | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract		1		1
Pre-Modification Outstanding Recorded Investment		$ 1,863		$ 1,863
Post-Modification Outstanding Recorded Investment		$ 1,863		$ 1,863
Agricultural
Financing Receivable, Modifications
Number of Contracts | contract	1	6	1	6
TDR, subsequent restructure	$ 59	$ 315	$ 59	$ 315
Agricultural | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract		7		7
Pre-Modification Outstanding Recorded Investment		$ 341		$ 341
Post-Modification Outstanding Recorded Investment		$ 341		$ 341
Agricultural | Other
Financing Receivable, Modifications
Number of Contracts | contract	1		2
Pre-Modification Outstanding Recorded Investment	$ 59		$ 267
Post-Modification Outstanding Recorded Investment	$ 69		$ 278
Commercial real estate | Farmland | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract		1		1
Pre-Modification Outstanding Recorded Investment		$ 158		$ 158
Post-Modification Outstanding Recorded Investment		$ 158		$ 158
Commercial real estate | Commercial real estate-other | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract			3
Pre-Modification Outstanding Recorded Investment			$ 759
Post-Modification Outstanding Recorded Investment			$ 808
Residential real estate | One- to four- family first liens | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract	1		3	3
Pre-Modification Outstanding Recorded Investment	$ 128		$ 274	$ 240
Post-Modification Outstanding Recorded Investment	$ 132		$ 278	$ 239
Residential real estate | One- to four- family junior liens | Extended maturity
Financing Receivable, Modifications
Number of Contracts | contract		1		3
Pre-Modification Outstanding Recorded Investment		$ 5		$ 81
Post-Modification Outstanding Recorded Investment		$ 5		$ 81
Farmland
Financing Receivable, Modifications
Number of Contracts | contract	1	1	1	1
TDR, subsequent restructure	$ 150	$ 158	$ 150	$ 158
Farmland | Other
Financing Receivable, Modifications
Number of Contracts | contract	1		3
Pre-Modification Outstanding Recorded Investment	$ 150		$ 504
Post-Modification Outstanding Recorded Investment	$ 161		$ 514

Loans Receivable and the All_11

Loans Receivable and the Allowance for Credit Losses - Pre-ASC 326 Impaired Loan Disclosure (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2019
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			$ 21,568
Impaired financing receivable, with related allowance, recorded investment			11,927
Recorded Investment			33,495
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			25,790
Impaired financing receivable, with related allowance, unpaid principal balance			13,121
Unpaid Principal Balance			38,911
Related Allowance			3,663
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	$ 11,778	$ 10,270
Impaired financing receivable, with related allowance, average recorded investment	9,525	7,450
Average Recorded Investment	21,303	17,720
Interest Income Recognized
Impaired financing receivable, with no related allowance, interest income, accrual method	20	20
Impaired financing receivable, with related allowance, interest income, accrual method	100	136
Interest Income Recognized	120	156
Agricultural
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			2,383
Impaired financing receivable, with related allowance, recorded investment			1,929
Recorded Investment			4,312
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			2,913
Impaired financing receivable, with related allowance, unpaid principal balance			1,930
Unpaid Principal Balance			4,843
Related Allowance			212
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	2,260	1,962
Impaired financing receivable, with related allowance, average recorded investment	1,527	1,378
Average Recorded Investment	3,787	3,340
Interest Income Recognized
Impaired financing receivable, with no related allowance, interest income, accrual method	11
Impaired financing receivable, with related allowance, interest income, accrual method		31
Interest Income Recognized	11	31
Commercial and industrial
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			7,391
Impaired financing receivable, with related allowance, recorded investment			4,851
Recorded Investment			12,242
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			10,875
Impaired financing receivable, with related allowance, unpaid principal balance			5,417
Unpaid Principal Balance			16,292
Related Allowance			2,198
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	5,199	4,961
Impaired financing receivable, with related allowance, average recorded investment	4,577	3,386
Average Recorded Investment	9,776	8,347
Interest Income Recognized
Impaired financing receivable, with no related allowance, interest income, accrual method	2
Impaired financing receivable, with related allowance, interest income, accrual method	16
Interest Income Recognized	18
Commercial real estate
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			11,196
Impaired financing receivable, with related allowance, recorded investment			4,886
Recorded Investment			16,082
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			11,403
Impaired financing receivable, with related allowance, unpaid principal balance			5,512
Unpaid Principal Balance			16,915
Related Allowance			1,180
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	3,951	3,071
Impaired financing receivable, with related allowance, average recorded investment	3,156	2,420
Average Recorded Investment	7,107	5,491
Interest Income Recognized
Impaired financing receivable, with no related allowance, interest income, accrual method	7	20
Impaired financing receivable, with related allowance, interest income, accrual method	82	98
Interest Income Recognized	89	118
Commercial real estate | Construction & development
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			1,181
Impaired financing receivable, with related allowance, recorded investment			135
Recorded Investment			1,316
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			1,218
Impaired financing receivable, with related allowance, unpaid principal balance			135
Unpaid Principal Balance			1,353
Related Allowance			135
Commercial real estate | Farmland
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			4,306
Impaired financing receivable, with related allowance, recorded investment			1,109
Recorded Investment			5,415
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			4,331
Impaired financing receivable, with related allowance, unpaid principal balance			1,148
Unpaid Principal Balance			5,479
Related Allowance			347
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	2,410	1,710
Impaired financing receivable, with related allowance, average recorded investment	649	586
Average Recorded Investment	3,059	2,296
Interest Income Recognized
Impaired financing receivable, with related allowance, interest income, accrual method		5
Interest Income Recognized		5
Commercial real estate | Commercial real estate-other
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			5,709
Impaired financing receivable, with related allowance, recorded investment			3,642
Recorded Investment			9,351
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			5,854
Impaired financing receivable, with related allowance, unpaid principal balance			4,229
Unpaid Principal Balance			10,083
Related Allowance			698
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	1,541	1,361
Impaired financing receivable, with related allowance, average recorded investment	2,507	1,834
Average Recorded Investment	4,048	3,195
Interest Income Recognized
Impaired financing receivable, with no related allowance, interest income, accrual method	7	20
Impaired financing receivable, with related allowance, interest income, accrual method	82	93
Interest Income Recognized	89	113
Residential real estate
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			577
Impaired financing receivable, with related allowance, recorded investment			261
Recorded Investment			838
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			578
Impaired financing receivable, with related allowance, unpaid principal balance			262
Unpaid Principal Balance			840
Related Allowance			73
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	347	260
Impaired financing receivable, with related allowance, average recorded investment	265	266
Average Recorded Investment	612	526
Interest Income Recognized
Impaired financing receivable, with related allowance, interest income, accrual method	2	7
Interest Income Recognized	2	7
Residential real estate | One- to four- family first liens
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			577
Impaired financing receivable, with related allowance, recorded investment			261
Recorded Investment			838
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			578
Impaired financing receivable, with related allowance, unpaid principal balance			262
Unpaid Principal Balance			840
Related Allowance			73
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	347	260
Impaired financing receivable, with related allowance, average recorded investment	265	266
Average Recorded Investment	612	526
Interest Income Recognized
Impaired financing receivable, with related allowance, interest income, accrual method	2	7
Interest Income Recognized	2	7
Consumer
Recorded Investment
Impaired financing receivable, with no related allowance, recorded investment			21
Recorded Investment			21
Unpaid Principal Balance
Impaired financing receivable, with no related allowance, unpaid principal balance			21
Unpaid Principal Balance			$ 21
Average Recorded Investment
Impaired financing receivable, with no related allowance, average recorded investment	21	16
Average Recorded Investment	$ 21	$ 16

Loans Receivable and the All_12

Loans Receivable and the Allowance for Credit Losses - PCD Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	$ 3,422,187	$ 3,478,932
Carrying amount	22,551
Allowance for credit losses	1,250
Carrying amount, net of allowance for credit losses	21,301
Purchased credit impaired loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	23,047
Purchased credit impaired loans | Agricultural
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	904
Purchased credit impaired loans | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	147
Purchased credit impaired loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	17,803
Purchased credit impaired loans | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	4,136
Purchased credit impaired loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable, net	$ 57

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Balance Sheet Offsetting - Derivatives and Hedging Activities (Details) - USD ($)	Sep. 30, 2020	Feb. 29, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 13,560,000		$ 1,848,000
Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	55,744,000		16,734,000
Derivative assets, fair value	0		0
Derivative liabilities, fair value	3,790,000		1,113,000
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	25,744,000		16,734,000
Derivative assets, fair value	0		0
Derivative liabilities, fair value	2,926,000		1,113,000
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	30,000,000	$ 30,000,000	0
Derivative assets, fair value	0		0
Derivative liabilities, fair value	864,000		0
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Derivative, notional amount	357,073,000		128,343,000
Derivative assets, fair value	13,560,000		1,848,000
Derivative liabilities, fair value	13,713,000		2,129,000
Not Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative, notional amount	342,670,000		113,632,000
Derivative assets, fair value	13,550,000		1,824,000
Derivative liabilities, fair value	13,692,000		1,999,000
Not Designated as Hedging Instrument | RPAs | RPAs - protection sold
Derivatives, Fair Value [Line Items]
Derivative, notional amount	4,530,000		4,702,000
Derivative assets, fair value	10,000		24,000
Derivative liabilities, fair value	0		0
Not Designated as Hedging Instrument | RPAs | RPAs - protection purchased
Derivatives, Fair Value [Line Items]
Derivative, notional amount	9,873,000		10,009,000
Derivative assets, fair value	0		0
Derivative liabilities, fair value	$ 21,000		$ 130,000

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Balance Sheet Offsetting - Additional Information (Details) - USD ($)	Sep. 30, 2020	Feb. 29, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest rate swap contracts, interest income to be reclassified in next 12 months	$ 358,000
Fair value of derivatives in a net liability position, including accrued interest	17,700,000
Collateral related to the agreement	13,560,000		$ 1,848,000
Assets needed for immediate settlement, aggregate fair value	17,700,000
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	55,744,000		16,734,000
Interest rate swaps | Cash flow hedges | Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	$ 30,000,000	$ 30,000,000	$ 0

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Balance Sheet Offsetting - Schedule of Impacts on Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivative	$ 8	$ 0	$ (1,009)	$ 0
Amount of Gain (Loss) Reclassified from AOCI into Income	(88)	0	(145)	0
Interest income	37,809	43,258	113,927	104,066
Interest expense	7,345	10,818	25,390	28,349
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	8	0	(1,009)	0
Designated as Hedging Instrument | Interest rate swaps | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Interest income	(102)	(1)	(229)	(2)
Interest expense	0	0	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			0
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	(174)	617	1,814	1,412
Change in fair value of derivative instruments	180	(618)	(1,813)	(1,414)
Designated as Hedging Instrument | Interest rate swaps | Interest Expense | Cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income	(88)	0	(145)	0
Amount reclassified from AOCI into income	88		145	0
Designated as Hedging Instrument | Interest rate swaps | Interest Expense | Fair value hedges
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value of hedged items	0	0	0	0
Change in fair value of derivative instruments		$ 0	$ 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	Sep. 30, 2020USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of the Hedged Assets	$ 28,679
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset	$ 2,924

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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	$ (93)	$ (120)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)			$ 127	$ (374)
Interest rate swaps | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	(90)	(96)
Interest rate swaps | Other income | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)			33	(226)
RPAs | Other income
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)	$ (3)	$ (24)
RPAs | Other income | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives not designated as hedging, gain (loss)			$ 94	$ (148)

Derivatives, Hedging Activiti_8

Derivatives, Hedging Activities and Balance Sheet Offsetting - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Asset Derivatives
Gross Amounts of Recognized Assets (Liabilities)	$ 13,560	$ 1,848
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets (Liabilities) presented in the Balance Sheet	13,560	1,848
Financial Instruments	0	0
Cash Collateral Pledged	0	0
Net Assets (Liabilities)	13,560	1,848
Liability Derivatives
Gross Amounts of Recognized Assets (Liabilities)	(17,503)	(3,242)
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets (Liabilities) presented in the Balance Sheet	(17,503)	(3,242)
Financial Instruments	0	0
Cash Collateral Pledged	(17,503)	(3,242)
Net Assets (Liabilities)	$ 0	$ 0

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Goodwill and Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Roll Forward]
Goodwill, beginning of period			$ 91,918
Fair value adjustment			2,059
Goodwill impairment	$ (31,500)	$ 0	(31,500)	$ 0
Total goodwill, end of period	$ 62,477		$ 62,477

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived trade name intangible	$ 7,040	$ 7,040
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49,710	49,710
Accumulated Amortization	(29,939)	(24,532)
Net Carrying Amount	19,771	25,178
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	(25,208)	(21,032)
Net Carrying Amount	16,537	20,713
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,265	5,265
Accumulated Amortization	(2,324)	(1,195)
Net Carrying Amount	2,941	4,070
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,700	2,700
Accumulated Amortization	(2,407)	(2,305)
Net Carrying Amount	$ 293	$ 395

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2020	$ 1,568
2021	5,358
2022	4,363
2023	3,402
2024	2,443
Thereafter	2,637
Net Carrying Amount	19,771	$ 25,178
Core deposit intangible
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2020	1,231
2021	4,190
2022	3,487
2023	2,833
2024	2,180
Thereafter	2,616
Net Carrying Amount	16,537	20,713
Customer relationship intangible
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2020	306
2021	1,062
2022	797
2023	518
2024	239
Thereafter	19
Net Carrying Amount	2,941	4,070
Other
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2020	31
2021	106
2022	79
2023	51
2024	24
Thereafter	2
Net Carrying Amount	$ 293	$ 395

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Other Assets [Abstract]
Bank-owned life insurance	$ 82,942	$ 81,625
Interest receivable	21,112	18,525
Federal Home Loan Bank stock	12,246	15,381
Mortgage servicing rights	5,274	7,026
Operating lease right-of-use assets, net	3,860	4,499
Federal and state income taxes, current	725	2,318
Federal and state income taxes, deferred	7,413	3,530
Derivative assets	13,560	1,848
Other receivables/assets	12,375	13,208
Other assets	$ 159,507	$ 147,960

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Deposits [Abstract]
Noninterest bearing deposits	$ 864,504	$ 662,209
Interest checking deposits	1,230,146	962,830
Money market deposits	871,336	763,028
Savings deposits	486,876	387,142
Certificates of deposit under $250,000	617,229	682,232
Certificates of deposit of $250,000 or more	263,550	271,214
Total deposits	4,333,641	3,728,655
Domestic time deposit, brokered	6,200	6,600
Domestic non-time deposit, brokered	16,100	10,100
Deposits of government entities	$ 138,800	$ 96,600

Short-Term Borrowings (Details)

Short-Term Borrowings (Details) - USD ($)	May 01, 2019	Apr. 30, 2015	Sep. 30, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Weighted Average Rate			0.35%	1.17%
Short-term borrowings			$ 183,893,000	$ 139,349,000
Pledged securities			$ 434,500,000	$ 264,800,000
Securities sold under agreements to repurchase
Short-term Debt [Line Items]
Weighted Average Rate			0.35%	1.06%
Short-term borrowings			$ 183,893,000	$ 117,249,000
Federal Home Loan Bank advances
Short-term Debt [Line Items]
Weighted Average Rate			0.00%	1.73%
Short-term borrowings			$ 0	$ 22,100,000
Unsecured line of credit
Short-term Debt [Line Items]
Weighted Average Rate			0.00%	0.00%
Short-term borrowings			$ 0	$ 0
Unsecured line of credit, maximum borrowing capacity	$ 10,000,000	$ 5,000,000
Unsecured line of credit | LIBOR
Short-term Debt [Line Items]
Debt instrument, basis spread on variable rate	1.75%	2.00%
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			67,900,000	12,700,000
Pledged securities			$ 71,900,000	$ 13,000,000

Long-Term Debt - Junior Subordi

Long-Term Debt - Junior Subordinated Notes (Details) - Junior subordinated notes - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt instrument, face amount	$ 44,847	$ 44,847
Debt instrument, book value	41,719	41,587
ATBancorp Statutory Trust I
Debt Instrument [Line Items]
Debt instrument, face amount	7,732	7,732
Debt instrument, book value	$ 6,841	$ 6,814
Interest rate	1.93%	3.57%
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	$ 10,836	$ 10,794
Interest rate	1.90%	3.54%
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	$ 1,758	$ 1,732
Interest rate	2.37%	4.08%
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	$ 6,820	$ 6,783
Interest rate	3.75%	5.39%
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	1.84%	3.48%
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) - USD ($) $ in Thousands	Jul. 28, 2020	Jun. 30, 2015	Sep. 30, 2020	Dec. 31, 2019	May 01, 2019	Apr. 30, 2019	Apr. 30, 2015
Subordinated debt
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%
Subordinated debt | 5.75% Fixed to floating subordinated notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 63,750
Interest rate	5.75%
Subordinated debt | 5.75% Fixed to floating subordinated notes | Private placement
Debt Instrument [Line Items]
Sale of equity	$ 65,000
Notes payable to unaffiliated bank
Debt Instrument [Line Items]
Debt outstanding			$ 26,750	$ 32,250
Notes payable to unaffiliated bank | Unsecured note payable, entered april 2015
Debt Instrument [Line Items]
Debt instrument, face amount							$ 35,000
Draw on notes payable		$ 25,000
Notes payable to unaffiliated bank | Unsecured note payable, entered april 2019
Debt Instrument [Line Items]
Debt instrument, face amount						$ 35,000
Debt outstanding			$ 26,800

Long-Term Debt - Other Long-Ter

Long-Term Debt - Other Long-Term Debt (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finance lease payable
Debt Instrument [Line Items]
Weighted Average Rate	8.89%	8.89%
Balance	$ 1,130	$ 1,224
FHLB borrowings
Debt Instrument [Line Items]
Weighted Average Rate	1.89%	2.25%
Balance	$ 101,222	$ 145,700
Federal home loan, bank advances general debt obligations, disclosures maximum borrowing capacity as percentage of total assets	45.00%
Notes payable to unaffiliated bank
Debt Instrument [Line Items]
Weighted Average Rate	1.91%	3.44%
Balance	$ 26,750	$ 32,250
Other long-term debt
Debt Instrument [Line Items]
Weighted Average Rate	1.96%	2.51%
Balance	$ 129,102	$ 179,174

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Amount
Income tax based on statutory rate	$ (3,686)	$ 3,267	$ (1,568)	$ 8,111
Tax-exempt interest	(801)	(791)	(2,147)	(1,732)
Bank-owned life insurance	(111)	(108)	(353)	(289)
State income taxes, net of federal income tax benefit	735	833	1,280	2,063
Goodwill Impairment	6,615	0	6,615	0
Non-deductible acquisition expenses	0	5	0	167
General business credits	(551)	41	(1,322)	13
Other	71	9	115	31
Total income tax expense	$ 2,272	$ 3,256	$ 2,620	$ 8,364
% of Pretax Income
Income tax based on statutory rate	21.00%	21.00%	21.00%	21.00%
Tax-exempt interest	4.60%	(5.10%)	28.70%	(4.50%)
Bank-owned life insurance	0.60%	(0.70%)	4.70%	(0.70%)
State income taxes, net of federal income tax benefit	(4.20%)	5.40%	(17.10%)	5.30%
Goodwill Impairment	(37.70%)	0.00%	(88.60%)	0.00%
Non-deductible acquisition expenses	0.00%	0.00%	0.00%	0.50%
General business credits	3.20%	0.30%	17.70%	0.00%
Other	(0.40%)	0.00%	(1.50%)	0.10%
Total income tax expense	(12.90%)	20.90%	(35.10%)	21.70%

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic (Loss) Earnings Per Share:
Net (loss) income	$ (19,824)	$ 11,712	$ (1,975)	$ 12,300	$ 10,674	$ 7,285	$ (10,087)	$ 30,259
Weighted average shares outstanding (in shares)	16,099,324			16,200,667			16,111,591	14,434,411
Basic (loss) earnings per common share (in dollars per share)	$ (1.23)			$ 0.76			$ (0.63)	$ 2.10
Diluted (Loss) Earnings Per Share:
Net (loss) income	$ (19,824)	$ 11,712	$ (1,975)	$ 12,300	$ 10,674	$ 7,285	$ (10,087)	$ 30,259
Weighted average shares outstanding, including all dilutive potential shares (in shares)	16,099,324			16,214,562			16,111,591	14,444,732
Diluted (loss) earnings per common share (in dollars per share)	$ (1.23)			$ 0.76			$ (0.63)	$ 2.09

Earnings per Share - Anti-Dilut

Earnings per Share - Anti-Dilutive Shares (Details) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Earnings Per Share [Abstract]
Dilutive shares (in shares)	7,132,000	6,820,000

Regulatory Capital Requiremen_3

Regulatory Capital Requirements and Restrictions on Subsidiary Cash (Details)	Sep. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 562,015,000	$ 463,601,000
Capital to risk weighted assets	0.1356	0.1134
Capital required for capital adequacy	$ 435,338,000	$ 429,077,000
Capital required for capital adequacy to risk weighted assets	0.1050	0.1050
Tier one risk based capital	$ 444,772,000	$ 428,021,000
Tier one risk based capital to risk weighted assets	0.1073	0.1047
Tier one risk based capital required for capital adequacy	$ 352,416,000	$ 347,348,000
Tier one risk based capital required for capital adequacy to risk weighted assets	0.0850	0.0850
Common equity tier one capital	$ 403,053,000	$ 386,434,000
Common equity tier one capital to risk weighted assets	9.72%	9.46%
Common equity tier one capital required for capital adequacy	$ 290,225,000	$ 286,051,000
Common equity tier one capital required for capital adequacy to risk weighted assets	7.00%	7.00%
Tier one leverage capital	$ 444,772,000	$ 428,021,000
Tier one leverage capital to average assets	0.0852	0.0948
Tier one leverage capital required for capital adequacy	$ 208,864,000	$ 180,529,000
Tier one leverage capital required for capital adequacy to average assets	0.0400	0.0400
Capital conservation buffer	0.0250	0.0250
Cash reserve deposit required and made	$ 0	$ 24,100,000
MidWestOne Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital	$ 531,541,000	$ 482,106,000
Capital to risk weighted assets	0.1295	0.1183
Capital required for capital adequacy	$ 431,130,000	$ 427,877,000
Capital required for capital adequacy to risk weighted assets	0.1050	0.1050
Capital required to be well capitalized	$ 410,600,000	$ 407,502,000
Capital required to be well capitalized to risk weighted assets	0.1000	0.1000
Tier one risk based capital	$ 482,406,000	$ 453,027,000
Tier one risk based capital to risk weighted assets	0.1175	0.1112
Tier one risk based capital required for capital adequacy	$ 349,010,000	$ 346,377,000
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	$ 328,480,000	$ 326,002,000
Tier one risk based capital required to be well capitalized to risk weighted assets	0.0800	0.0800
Common equity tier one capital	$ 482,406,000	$ 453,027,000
Common equity tier one capital to risk weighted assets	11.75%	11.12%
Common equity tier one capital required for capital adequacy	$ 287,420,000	$ 285,251,000
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	$ 266,890,000	$ 264,876,000
Common equity tier one risk based capital required to be well capitalized to risk weighted assets	6.50%	6.50%
Tier one leverage capital	$ 482,406,000	$ 453,027,000
Tier one leverage capital to average assets	0.0926	0.1006
Tier one leverage capital required for capital adequacy	$ 208,318,000	$ 180,209,000
Tier one leverage capital required for capital adequacy to average assets	0.0400	0.0400
Tier one leverage capital required to be well capitalized	$ 260,398,000	$ 231,166,000
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	Sep. 30, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Other commitment	$ 932,107	$ 900,804
Commitments to sell loans
Other Commitments [Line Items]
Other commitment	13,096	5,400
Commitments to extend credit
Other Commitments [Line Items]
Other commitment	893,147	859,212
Standby letters of credit
Other Commitments [Line Items]
Other commitment	$ 25,864	$ 36,192

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Jan. 01, 2020
Concentration Risk [Line Items]
Liability for off-balance sheet credit exposures	$ 4,500,000	$ 4,500,000		$ 0
Credit loss expense, off balance sheet credit exposure	$ 300,000	$ 1,100,000	$ 0
Credit Concentration Risk | Loans Concentration | Commercial real estate
Concentration Risk [Line Items]
Concentration risk, percentage		63.00%
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		26.00%
Credit Concentration Risk | Investment Securities | State and political subdivisions | MINNESOTA
Concentration Risk [Line Items]
Concentration risk, percentage		18.00%

Fair Value of Financial Instr_3

Fair Value of Financial Instruments and Fair Value Measurements - Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	$ 1,366,344	$ 785,977
Derivative assets	13,560	1,848
U.S. Government agencies and corporations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	386	441
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	510,483	257,205
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	108,633	43,530
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	343,949	191,855
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	13,560	1,848
Derivative liabilities	17,503	3,242
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	13,560	1,848
Derivative liabilities	17,503	3,242
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative assets	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	386	441
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
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	386	441
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
Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	510,483	257,205
Recurring | State and political subdivisions | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | State and political subdivisions | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	510,483	257,205
Recurring | State and political subdivisions | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	108,633	43,530
Recurring | Mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	108,633	43,530
Recurring | Mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	402,893	292,946
Recurring | Collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	402,893	292,946
Recurring | Collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	343,949	191,855
Recurring | Corporate debt securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		0
Recurring | Corporate debt securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale	$ 343,949	191,855
Recurring | Corporate debt securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available for sale		$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments and Fair Value Measurements - Measured on a Nonrecurring Basis (Details) $ in Thousands	Sep. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	$ 724	$ 3,706
Nonrecurring | Collateral dependent impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	32,324	6,749
Nonrecurring | Collateral dependent impaired loans | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Collateral dependent individually analyzed loans	$ 32,324	6,749
Nonrecurring | Collateral dependent impaired loans | Level 3 | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0
Nonrecurring | Collateral dependent impaired loans | Level 3 | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.75
Nonrecurring | Collateral dependent impaired 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	$ 724	3,706
Nonrecurring | Foreclosed assets, net | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Foreclosed assets, net	$ 724	$ 3,706
Nonrecurring | Foreclosed assets, net | Level 3 | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.12
Nonrecurring | Foreclosed assets, net | Level 3 | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.55
Nonrecurring | Foreclosed assets, net | Level 3 | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Measurement input	0.31

Fair Value of Financial Instr_5

Fair Value of Financial Instruments and Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financial assets:
Debt securities available for sale	$ 1,366,344	$ 785,977
Interest receivable	21,112	18,525
Federal Home Loan Bank stock	12,246	15,381
Derivative assets	13,560	1,848
Financial liabilities:
Interest-bearing deposits	1,230,146	962,830
Short-term borrowings	183,893	139,349
Finance leases payable	1,130	1,225
Carrying Amount
Financial assets:
Cash and cash equivalents	134,862	73,484
Debt securities available for sale	1,366,344	785,977
Loans held for sale	13,096	5,400
Loans held for investment, net	3,478,932	3,422,187
Interest receivable	21,112	18,525
Federal Home Loan Bank stock	12,246
Derivative assets	13,560	1,848
Financial liabilities:
Non-interest bearing deposits	864,504	662,209
Interest-bearing deposits	3,469,137	3,066,446
Short-term borrowings	183,893	139,349
Finance leases payable	1,130	1,224
Federal Home Loan Bank borrowings	101,222	145,700
Junior subordinated notes issued to capital trusts	41,719	41,587
Subordinated debentures	74,660	10,899
Other long-term debt	26,750	32,250
Derivative liabilities	17,503	3,242
Estimated Fair Value
Financial assets:
Cash and cash equivalents	134,862	73,484
Debt securities available for sale	1,366,344	785,977
Loans held for sale	13,433	5,476
Loans held for investment, net	3,530,722	3,427,952
Interest receivable	21,112	18,525
Federal Home Loan Bank stock	12,246	15,381
Derivative assets	13,560	1,848
Financial liabilities:
Non-interest bearing deposits	864,504	662,209
Interest-bearing deposits	3,474,719	3,066,427
Short-term borrowings	183,893	139,349
Finance leases payable	1,130	1,224
Federal Home Loan Bank borrowings	104,618	146,913
Junior subordinated notes issued to capital trusts	33,848	39,391
Subordinated debentures	76,651	11,083
Other long-term debt	26,750	32,250
Derivative liabilities	17,503	3,242
Level 1 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	134,862	73,484
Debt securities available for sale	0	0
Loans held for sale	0	0
Loans held for investment, net	0	0
Interest receivable	0	0
Federal Home Loan Bank stock	0	0
Derivative assets	0	0
Financial liabilities:
Non-interest bearing deposits	864,504	662,209
Interest-bearing deposits	2,588,358	2,113,000
Short-term borrowings	183,893	139,349
Finance leases payable	0	0
Federal Home Loan Bank borrowings	0	0
Junior subordinated notes issued to capital trusts	0	0
Subordinated debentures	0	0
Other long-term debt	0	0
Derivative liabilities	0	0
Level 2 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	0	0
Debt securities available for sale	1,366,344	785,977
Loans held for sale	13,433	5,476
Loans held for investment, net	0	0
Interest receivable	21,112	18,525
Federal Home Loan Bank stock	12,246	15,381
Derivative assets	13,560	1,848
Financial liabilities:
Non-interest bearing deposits	0	0
Interest-bearing deposits	886,361	953,427
Short-term borrowings	0	0
Finance leases payable	1,130	1,224
Federal Home Loan Bank borrowings	104,618	146,913
Junior subordinated notes issued to capital trusts	33,848	39,391
Subordinated debentures	76,651	11,083
Other long-term debt	26,750	32,250
Derivative liabilities	17,503	3,242
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	3,530,722	3,427,952
Interest receivable		0
Federal Home Loan Bank stock		0
Derivative assets	0	0
Financial liabilities:
Non-interest bearing deposits	0	0
Interest-bearing deposits	0	0
Short-term borrowings		0
Finance leases payable	0	0
Federal Home Loan Bank borrowings	0	0
Junior subordinated notes issued to capital trusts	0	0
Subordinated debentures	0	0
Other long-term debt	0	0
Derivative liabilities	$ 0	$ 0

Leases - Assets and Liabilities

Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 3,860	$ 4,499
Finance lease right-of-use asset	573	637
Total right-of-use assets	4,433	5,136
Lease Liabilities
Operating lease liability	4,830	5,430
Finance lease liability	1,130	1,225
Total lease liabilities	$ 5,960	$ 6,655
Weighted-average remaining lease term
Operating leases	8 years 9 months 10 days	8 years 10 months 24 days
Finance lease	5 years 11 months 1 day	6 years 8 months 1 day
Weighted-average discount rate
Operating leases	3.87%	3.78%
Finance lease	8.89%	8.89%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets	us-gaap:OtherAssets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities	us-gaap:OtherLiabilities
Finance Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebt	us-gaap:LongTermDebt

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 209	$ 303	$ 937	$ 755
Variable lease cost	42	52	189	118
Short-term lease cost	0	0	0	0
Interest on lease liabilities	25	28	78	85
Amortization of right-of-use assets	24	24	72	72
Net lease cost	300	407	1,276	1,030
Operating cash flows from operating leases	443	524	1,598	1,354
Operating cash flows from finance lease	25	41	78	124
Finance cash flows from finance lease	32	28	94	83
Right-of-use assets obtained in exchange for new operating lease liabilities	39	49	132	5,319
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 0	$ 0	$ 0	$ 0

Leases - Maturity Schedule (Det

Leases - Maturity Schedule (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Finance Leases
December 31, 2020	$ 58
December 31, 2021	235
December 31, 2022	240
December 31, 2023	245
December 31, 2024	250
Thereafter	426
Total undiscounted lease payment	1,454
Amounts representing interest	(324)
Finance lease liability	1,130	$ 1,225
Operating Leases
December 31, 2020	287
December 31, 2021	1,112
December 31, 2022	993
December 31, 2023	932
December 31, 2024	702
Thereafter	2,139
Total undiscounted lease payment	6,165
Amounts representing interest	(1,335)
Operating lease liability	$ 4,830	$ 5,430

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent event $ / shares in Units, $ in Thousands	Oct. 28, 2020USD ($)$ / shares
Subsequent Event
Reduction in operating expenses | $	$ 360
Common Stock
Subsequent Event
Dividends payable (in dollars per share) | $ / shares	$ 0.22

Uncategorized Items - mofg-2020

Label	Element	Value
Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability	us-gaap_OperatingLeaseLiability	$ 0
Operating Lease, Liability	us-gaap_OperatingLeaseLiability	2,892,000
Operating Lease, Right-of-Use Asset	us-gaap_OperatingLeaseRightOfUseAsset	2,892,000
Operating Lease, Right-of-Use Asset	us-gaap_OperatingLeaseRightOfUseAsset	$ 0