First Mid Bancshares (FMBH) 10-Q 4 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 05, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Registrant Name	FIRST MID BANCSHARES, INC.
Entity Central Index Key	0000700565
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		18,088,455
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock
Trading Symbol	FMBH
Security Exchange Name	NASDAQ
Entity File Number	001-36434
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	37-1103704
Entity Address, Address Line One	1421 Charleston Avenue
Entity Address, City or Town	Mattoon
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	61938
City Area Code	217
Local Phone Number	234-7454
Document Quarterly Report	true
Document Transition Report	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Cash and due from banks:
Non-interest bearing	$ 107,811,000	$ 75,152,000
Interest bearing	236,048,000	340,821,000
Federal funds sold	1,347,000	1,308,000
Cash and cash equivalents	345,206,000	417,281,000
Certificates of deposit	2,695,000	2,695,000
Investment securities:
Available-for-sale, at fair value	1,346,966,000	879,240,000
Held-to-maturity, at amortized cost (estimated fair value of $7,057 and $5,119 at September 30, 2021 and December 31, 2020, respectively)	7,026,000	5,016,000
Equity securities, at fair value	348,000	218,000
Loans held for sale	1,897,000	1,924,000
Loans	3,945,872,000	3,136,495,000
Less allowance for credit losses	(53,983,000)	(41,910,000)
Net loans	3,891,889,000	3,094,585,000
Interest receivable	22,057,000	19,287,000
Other real estate owned	5,625,000	2,489,000
Premises and equipment, net	81,823,000	58,206,000
Goodwill	111,853,000	104,992,000
Intangible assets, net	30,803,000	23,128,000
Bank owned life insurance	131,547,000	68,955,000
Right of use lease assets	16,120,000	17,209,000
Other assets	47,504,000	31,123,000
Total assets	6,043,359,000	4,726,348,000
Deposits:
Non-interest bearing	1,242,950,000	936,926,000
Interest bearing	3,745,612,000	2,755,858,000
Total deposits	4,988,562,000	3,692,784,000
Securities sold under agreements to repurchase	149,891,000	206,937,000
Interest payable	2,569,000	2,345,000
FHLB borrowings	112,641,000	93,969,000
Junior subordinated debentures, net	19,153,000	19,027,000
Subordinated debt, net	94,363,000	94,253,000
Lease liabilities	16,315,000	17,351,000
Other liabilities	32,640,000	31,454,000
Total liabilities	5,416,134,000	4,158,120,000
Stockholders’ equity:
Common stock, $4 par value; authorized 30,000,000 shares; issued 18,703,817 and 17,361,898 shares in 2021 and 2020, respectively; outstanding 18,083,126 and 16,741,207 shares in 2021 and 2020 respectively	76,815,000	71,449,000
Additional paid-in capital	340,118,000	297,806,000
Retained earnings	221,295,000	197,726,000
Deferred compensation	2,125,000	2,980,000
Accumulated other comprehensive income	5,633,000	17,095,000
Less treasury stock at cost, 620,691 shares in 2021 and 2020	(18,761,000)	(18,828,000)
Total stockholders’ equity	627,225,000	568,228,000
Total liabilities and stockholders’ equity	$ 6,043,359,000	$ 4,726,348,000

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investment securities:
Held-to-maturity, at fair value	$ 7,057	$ 5,119
Stockholders’ equity:
Common stock, par value (in dollars per share)	$ 4	$ 4
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, issued (in shares)	18,703,817	17,361,898
Common stock, outstanding (in shares)	18,083,126	16,741,207
Treasury stock (in shares)	620,691	620,691

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest income:
Interest and fees on loans	$ 43,292,000	$ 32,151,000	$ 119,973,000	$ 93,560,000
Interest on investment securities	5,835,000	4,074,000	16,416,000	12,740,000
Interest on certificates of deposit investments	14,000	17,000	42,000	69,000
Interest on federal funds sold		1,000		3,000
Interest on deposits with other financial institutions	122,000	52,000	283,000	199,000
Total interest income	49,263,000	36,295,000	136,714,000	106,571,000
Interest expense:
Interest on deposits	2,234,000	3,168,000	6,980,000	10,134,000
Interest on securities sold under agreements to repurchase	52,000	68,000	179,000	420,000
Interest on FHLB borrowings	359,000	395,000	1,178,000	1,480,000
Interest on other borrowings	0	0	0	26,000
Interest on junior subordinated debentures	137,000		416,000
Interest on subordinated debentures	985,000	147,000	2,954,000	539,000
Total interest expense	3,767,000	3,778,000	11,707,000	12,599,000
Net interest income	45,496,000	32,517,000	125,007,000	93,972,000
Provision for loan losses	1,103,000	3,883,000	12,679,000	15,500,000
Net interest income after provision for loan losses	44,393,000	28,634,000	112,328,000	78,472,000
Other income:
Wealth management revenues	4,204,000	3,468,000	14,146,000	10,921,000
Insurance commissions	3,932,000	3,291,000	14,777,000	14,000,000
Service charges	1,838,000	1,446,000	4,741,000	4,335,000
Securities gains, net	11,000	95,000	88,000	913,000
Mortgage banking income	1,477,000	1,661,000	4,577,000	3,205,000
ATM / debit card revenue	3,060,000	2,367,000	8,900,000	6,593,000
Bank owned life insurance	813,000	434,000	2,211,000	1,293,000
Other	1,024,000	816,000	2,952,000	2,713,000
Total other income	16,359,000	13,578,000	52,392,000	43,973,000
Other expense:
Salaries and employee benefits	21,092,000	15,346,000	69,487,000	47,301,000
Net occupancy and equipment expense	5,382,000	4,363,000	15,834,000	12,746,000
Net other real estate owned expense	1,507,000	110,000	3,551,000	62,000
FDIC insurance	268,000	469,000	1,198,000	851,000
Amortization of intangible assets	1,414,000	1,277,000	3,929,000	3,862,000
Stationery and supplies	299,000	262,000	850,000	805,000
Legal and professional	1,878,000	1,320,000	4,919,000	4,207,000
ATM / debit card	618,000	730,000	2,530,000	1,609,000
Marketing and donations	679,000	387,000	1,688,000	1,182,000
Other	3,184,000	2,663,000	15,948,000	8,131,000
Total other expense	36,321,000	26,927,000	119,934,000	80,756,000
Income before income taxes	24,431,000	15,285,000	44,786,000	41,689,000
Income taxes	6,105,000	3,720,000	10,130,000	9,988,000
Net income	$ 18,326,000	$ 11,565,000	$ 34,656,000	$ 31,701,000
Per share data:
Basic net income per common share	$ 1.01	$ 0.69	$ 1.94	$ 1.90
Diluted net income per common share	1.01	$ 0.69	1.94	1.89
Cash dividends declared per common share	$ 0.220		$ 0.630	$ 0.400

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 18,326,000	$ 11,565,000	$ 34,656,000	$ 31,701,000
Other comprehensive income (loss)
Unrealized gains (losses) on available-for-sale securities, net of taxes of $1,282 and $21 for three months ended September 30, 2021 and 2020, respectively and $4,655 and ($3,778) for nine months ended September 30, 2021 and 2020, respectively.	(3,140,000)	(52,000)	(11,400,000)	9,250,000
Amortized holding losses on held-to-maturity securities transferred from available-for- sale, net of taxes of $0 and ($3) for three months ended September 30, 2021 and 2020, respectively and $0 and ($13) for nine months ended September 30, 2021 and 2020, respectively.		8,000		32,000
Less: reclassification adjustment for realized gains included in net income, net of taxes of $3 and $28 for three months ended September 30, 2021 and 2020, respectively and $26 and $265 for nine months ended September 30, 2021 and 2020, respectively.	(8,000)	(67,000)	(62,000)	(648,000)
Other comprehensive income (loss), net of taxes	(3,148,000)	(111,000)	(11,462,000)	8,634,000
Comprehensive income	$ 15,178,000	$ 11,454,000	$ 23,194,000	$ 40,335,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other comprehensive income (loss)
Unrealized gains (losses) on available-for-sale securities, taxes	$ 1,282	$ 21	$ 4,655	$ (3,778)
Amortized holding losses on held-to-maturity securities transferred from available-for-sale, taxes	0	(3)	0	(13)
Reclassification adjustment for realized gains included in net income, taxes	$ 3	$ 28	$ 26	$ 265

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	BBM & Associates, Inc.	Delta Bancshares Company	LINCO Bancshares, Inc.	Common Stock	Common StockCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common StockBBM & Associates, Inc.	Common StockLINCO Bancshares, Inc.	Additional Paid-in Capital	Additional Paid-in CapitalCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Additional Paid-in CapitalBBM & Associates, Inc.	Additional Paid-in CapitalDelta Bancshares Company	Additional Paid-in CapitalLINCO Bancshares, Inc.	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment	Retained EarningsCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Deferred Compensation	Deferred CompensationCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Income	Accumulated Other Comprehensive IncomeCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Treasury Stock	Treasury StockCumulative Effect, Period of Adoption, Adjusted Balance [Member]
Beginning balance at Dec. 31, 2019	$ 526,609,000		$ 525,892,000				$ 71,152,000	$ 71,152,000			$ 295,925,000	$ 295,925,000				$ 166,667,000		$ 165,950,000	$ 2,760,000	$ 2,760,000	$ 8,360,000	$ 8,360,000	$ (18,255,000)	$ (18,255,000)
Beginning balance (ASU 2016-13) at Dec. 31, 2019		$ (717,000)															$ (717,000)
Net income	31,701,000															31,701,000
Other comprehensive income (loss), net tax	8,634,000																				8,634,000
Cash dividends on common stock	(6,651,000)															(6,651,000)
Issuance of common shares pursuant to the dividend reinvestment plan	336,000						54,000				282,000
Issuance of common shares pursuant to the deferred compensation plan	228,000						33,000				195,000
Issuance of restricted shares pursuant to the 2017 Stock Incentive Plan	868,000						101,000				767,000
Issuance of common shares pursuant to the employee stock purchase plan	245,000						44,000				201,000
Deferred compensation																			208,000				(208,000)
Tax benefit related to deferred compensation distributions	22,000										22,000
Grant of restricted units pursuant to 2017 Stock Incentive Plan	584,000										584,000
Release of restricted units pursuant to 2017 Stock Incentive Plan	(516,000)										(516,000)
Vested restricted shares/units compensation expense	(334,000)																		(334,000)
Ending balance at Sep. 30, 2020	561,009,000						71,384,000				297,460,000					191,000,000			2,634,000		16,994,000		(18,463,000)
Beginning balance at Jun. 30, 2020	549,273,000						71,370,000				297,392,000					179,435,000			2,364,000		17,105,000		(18,393,000)
Net income	11,565,000															11,565,000
Other comprehensive income (loss), net tax	(111,000)																				(111,000)
Issuance of common shares pursuant to the employee stock purchase plan	82,000						14,000				68,000
Deferred compensation																			70,000				(70,000)
Vested restricted shares/units compensation expense	200,000																		200,000
Ending balance at Sep. 30, 2020	561,009,000						71,384,000				297,460,000					191,000,000			2,634,000		16,994,000		(18,463,000)
Beginning balance at Dec. 31, 2020	568,228,000						71,449,000				297,806,000					197,726,000			2,980,000		17,095,000		(18,828,000)
Net income	34,656,000															34,656,000
Other comprehensive income (loss), net tax	(11,462,000)																				(11,462,000)
Cash dividends on common stock	(11,087,000)															(11,087,000)
Issuance of common shares pursuant to the dividend reinvestment plan	333,000						32,000				301,000
Issuance of common shares pursuant to the deferred compensation plan	268,000						30,000				238,000
Issuance of restricted shares pursuant to the 2017 Stock Incentive Plan	942,000						111,000				831,000
Issuance of 2,375 common shares pursuant to the 2017 Stock Incentive Plan	85,000						10,000				75,000
Issuance of shares pursuant to the acquisition				$ 1,109,000		$ 44,191,000			$ 100,000	$ 5,049,000			$ 1,009,000		$ 39,142,000
Issuance costs pursuant to the acquisition of Delta Bancshares Company					$ (144,000)									$ (144,000)
Issuance of common shares pursuant to the employee stock purchase plan	262,000						34,000				228,000
Deferred compensation																			(67,000)				67,000
Grant of restricted units pursuant to 2017 Stock Incentive Plan	1,216,000										1,216,000
Release of restricted units pursuant to 2017 Stock Incentive Plan	(584,000)										(584,000)
Vested restricted shares/units compensation expense	(788,000)																		(788,000)
Ending balance at Sep. 30, 2021	627,225,000						76,815,000				340,118,000					221,295,000			2,125,000		5,633,000		(18,761,000)
Beginning balance at Jun. 30, 2021	616,066,000						76,797,000				340,452,000					206,934,000			1,742,000		8,781,000		(18,640,000)
Net income	18,326,000															18,326,000
Other comprehensive income (loss), net tax	(3,148,000)																				(3,148,000)
Cash dividends on common stock	(3,965,000)															(3,965,000)
Issuance of common shares pursuant to the dividend reinvestment plan	1,000										1,000
Issuance of common shares pursuant to the deferred compensation plan	78,000						7,000				71,000
Issuance costs pursuant to the acquisition of Delta Bancshares Company					$ (144,000)									$ (144,000)
Issuance of common shares pursuant to the employee stock purchase plan	104,000						11,000				93,000
Deferred compensation																			121,000				(121,000)
Tax benefit related to deferred compensation distributions	(355,000)										(355,000)
Vested restricted shares/units compensation expense	262,000																		262,000
Ending balance at Sep. 30, 2021	$ 627,225,000						$ 76,815,000				$ 340,118,000					$ 221,295,000			$ 2,125,000		$ 5,633,000		$ (18,761,000)

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Cash dividends declared per common share	$ 0.220	$ 0.630	$ 0.400
Issuance of common shares pursuant to the Dividend Reinvestment Plan (in shares)	1	8,615	13,804
Stock issued during period, shares, deferred compensation	1,952	7,493	8,163
Restricted stock issued during period, shares, pursuant to the 2017 stock incentive plan		27,750	25,200
Common stock issued during period, shares, pursuant to the 2017 stock incentive plan		2,375
Stock issued during period, shares, employee stock purchase plans	2,700	8,439	11,037
LINCO Bancshares, Inc.
Stock Issued During Period, Shares, Acquisitions		1,262,246
BBM & Associates, Inc.
Stock Issued During Period, Shares, Acquisitions	25,000	25,000

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 34,656	$ 31,701
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	12,679	15,500
Depreciation, amortization and accretion, net	10,131	8,795
Change in cash surrender value of bank owned life insurance	(2,211)	(1,293)
Stock-based compensation expense	786	604
Operating lease payments	(2,161)	(2,092)
Gain on investment securities, net	(88)	(913)
(Gain) loss on sales and write downs of other real estate owned, net	6,870	(427)
Gain on sale of other assets	(154)	(26)
Gain on sale of loans held for sale, net	(3,426)	(3,484)
(Increase) decrease in accrued interest receivable	195	(4,651)
Decrease in accrued interest payable	(519)	(237)
Origination of loans held for sale	(113,630)	(144,814)
Proceeds from sale of loans held for sale	117,083	145,716
Increase in other investment	(442)	(101)
Increase in other assets	(18,326)	(5,735)
Increase (decrease) in other liabilities	5,236	(5,479)
Net cash provided by operating activities	46,679	33,064
Cash flows from investing activities:
Proceeds from maturities of certificates of deposit investments	245	2,910
Purchases of certificates of deposit investments	(245)	(980)
Proceeds from sales of securities available-for-sale	611	3,417
Proceeds from maturities of securities available-for-sale	182,803	292,091
Proceeds from maturities of securities held-to-maturity	0	15,000
Purchases of securities available-for-sale	(552,294)	(291,282)
Net (increase) decrease in loans	16,683	(539,867)
Purchases of premises and equipment	(2,367)	(2,688)
Proceeds from sales of other real property owned	8,602	1,777
Investment in banked owned life insurance	(30,000)	0
Net cash provided by acquisition	27,061	0
Net cash used in investing activities	(348,901)	(519,622)
Cash flows from financing activities:
Net increase in deposits	305,368	702,470
Decrease in federal funds purchased	0	(5,000)
Decrease in repurchase agreements	(57,046)	(37,764)
Proceeds from FHLB advances	5,000	19,000
Repayment of FHLB advances	(14,000)	(39,000)
Proceeds from short-term debt	0	5,000
Repayment of short-term debt	0	(5,000)
Proceeds from issuance of common stock	1,724	473
Direct expenses related to capital transactions	(144)	0
Dividends paid on common stock	(10,755)	(6,316)
Net cash provided by financing activities	230,147	633,863
Increase (decrease) in cash and cash equivalents	(72,075)	147,305
Cash and cash equivalents at beginning of period	417,281	85,080
Cash and cash equivalents at end of period	345,206	232,385
Cash paid during the period for:
Interest	11,483	13,022
Income taxes	14,306	18,624
Supplemental disclosures of noncash investing and financing activities
Loans transferred to other real estate	237	214
Dividends reinvested in common stock	333	336
Net tax benefit related to option and deferred compensation plans	0	22
LINCO Bancshares, Inc.
Supplemental disclosures of noncash investing and financing activities
Fair value of assets acquired	1,170,699	0
Cash paid	103,500	0
Common stock issued	44,191	0
Total consideration paid	147,691	0
Fair value of liabilities assumed	$ 1,023,008	$ 0

Basis of Accounting and Consoli

Basis of Accounting and Consolidation	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Accounting and Consolidation	Note 1 -- Basis of Accounting and Consolidation The unaudited condensed consolidated financial statements include the accounts of First Mid Bancshares, Inc. (“Company”) formerly known as First Mid-Illinois Bancshares, Inc., and its wholly owned subsidiaries: First Mid Bank & Trust, N.A. (“First Wealth The unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and do not include all of the information required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements and related footnote disclosures although the Company believes that the disclosures made are adequate to make the information not misleading. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s 2020 Annual Report on Form 10-K. COVID-19 The COVID-19 outbreak is an unprecedented event that provides significant economic uncertainty for a broad spectrum of industries. The Company is focused on supporting its customers, communities and employees during this unique operating environment. Throughout this document, the Company describes the impact COVID-19 is having, actions taken as a result of COVID-19, and certain risks to the Company that COVID-19 creates or exacerbates, as well as management's outlook on the current COVID-19 situation. Delta Bancshares Company On July 28, 2021, the Company and Brock Sub LLC, a newly formed Delaware limited liability company and wholly-owned subsidiary of the Company (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Delta Bancshares Company, a Missouri corporation (“Delta”), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of Delta pursuant to a business combination whereby Delta will merge with and into Merger Sub, whereupon the separate corporate existence of Delta will cease and Merger Sub will continue as the surviving company and a wholly-owned subsidiary of First Mid (the “Merger”). Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger, each share of common stock, par value $10.00 per share, of Delta issued and outstanding immediately prior to the effective time of the Merger (other than shares held in treasury by Delta) will be converted into and become the right to receive cash and shares of common stock, par value $4.00 per share, of the Company and cash in lieu of fractional shares, less any applicable taxes required to be withheld, and subject to certain potential adjustments. On an aggregate basis, the total consideration payable by the Company at the closing of the Merger to Delta’s shareholders and option holders is approximately $15.2 million in cash and 2,282,511 shares of Company common stock. Delta’s outstanding stock options will fully vest upon consummation of the Merger, and all outstanding Delta options that are unexercised prior to the effective time of the Merger will be cashed out. It is anticipated that Delta’s wholly owned bank subsidiary, Jefferson Bank and Trust Company (“Jefferson Bank”), will be merged with and into First Mid Bank at a date following completion of the Merger. At the time of the bank merger, Jefferson Bank’s banking offices will become branches of First Mid Bank. As of September 30, 2021, Jefferson Bank had total consolidated assets of approximately $668 million, loans of approximately, $448 million and total deposits of approximately $511 million. The Merger is anticipated to be completed in the fourth quarter of 2021 and is subject to the approval of the appropriate regulatory authorities and the shareholders of Delta. The shareholders of Delta voted in favor of the Merger on October 28, 2021. 10 Subordinated Debt Offering On October 6, 2020, the Company issued and sold $96.0 million in aggregate principal amount of its 3.95% Fixed-to-Floating Rate Subordinated Notes due 2030 (the “Notes”). The Notes were issued pursuant to the Indenture, dated as of October 6, 2020 (the “Base Indenture”), between the Company and U.S. Bank National Association, as trustee (the “Trustee”), as supplemented by the First Supplemental Indenture, dated as of October 6, 2020 (the “Supplemental Indenture”), between the Company and the Trustee. The Base Indenture, as amended and supplemented by the Supplemental Indenture, governs the terms of the Notes and provides that the Notes are unsecured, subordinated debt obligations of the Company and will mature on October 15, 2030. From and including the date of issuance to, but excluding October 15, 2025, the Notes will bear interest at an initial rate of 3.95% per annum. From and including October 15, 2025 to, but excluding the maturity date or earlier redemption, the Notes will bear interest at a floating rate equal to three-month Term SOFR plus a spread of 383 basis points, or such other rate as determined pursuant to the Supplemental Indenture, provided that in no event shall the applicable floating interest rate be less than zero per annum. The Company may, beginning with the interest payment date of October 15, 2025, and on any interest payment date thereafter, redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest to but excluding the date of redemption. The Company may also redeem the Notes at any time, including prior to October 15, 2025, at the Company’s option, in whole but not in part, if: (i) a change or prospective change in law occurs that could prevent the Company from deducting interest payable on the Notes for U.S. federal income tax purposes; (ii) a subsequent event occurs that could preclude the Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) the Company is required to register as an investment company under the Investment Company Act of 1940, as amended; in each case, at a redemption price equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest to but excluding the redemption date. Website The Company maintains a website at www.firstmid.com General Litigation The Company is subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management that the disposition or ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, results of operations and cash flows of the Company. 2020 Loan Purchase On April 21, 2020, First Mid Bank completed an acquisition of loans in the St. Louis Metro market totaling $183,000,000. There were no loans purchased with deteriorated credit. First Mid Bank also assumed $60,000,000 of related customer deposits 2021 Loan Purchase On September 10, 2021, First Mid Bank completed an acquisition of loans in the St. Louis Metro market totaling $208,000,000. There were no loans purchased with deteriorated credit. First Mid Bank also assumed $215,000,000 of related customer deposits and recorded a core deposit intangible asset of approximately $4,848,000 that is being amortized on an accelerated basis over ten years. 11 Stock Plans At ten-year Following the stockholders’ approval at the 2021 annual meeting of the Company, a maximum of 399,983 shares of common stock may be issued under the SI Plan. There have been no stock options awarded under 27,750 25,200 2020 2020 Employee Stock Purchase Plan At the Annual Meeting of Stockholders held April 25, 2018, the stockholders approved the First Mid-Illinois Bancshares, Inc. Employee A 600,000 ESPP. September 30, 2021 2020 8,439 ESPP. Captive Insurance Company First “ Bank Owned Life Insurance First Mid Bank has purchased life insurance policies on certain senior management. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts that are probable at settlement. Revenue Recognition Accounting Revenue from Contracts with Customers Trust revenues. The Company generates fee income from providing fiduciary services through its subsidiary, First Mid Wealth Management Company. Fees are billed in arrears based upon the preceding period account balance. Revenue from farm management services is recorded when the service is complete, for example when crops are sold. Brokerage commissions. Revenue is recorded at the beginning of each quarter through billing to customers based on the account asset size on the last day of the previous quarter. If a withdrawal of funds takes place, a prorated refund may occur; this is reflected within the same quarter as the original billing occurred. All performance obligations are met within the same quarter that the revenue is recorded. 12 Insurance commissions. The Company’s insurance agency subsidiary, First Mid Insurance, receives commissions on premiums of new and renewed business policies. First Mid Insurance records commission revenue on direct bill policies as the cash is received. For agency bill policies, First Mid Insurance retains its commission portion of the customer premium payment and remits the balance to the carrier. In both cases, the entire performance obligation is held by the carriers. Service charges on deposits. The Company generates revenue from fees charged for deposit account maintenance, overdrafts, wire transfers, and check fees. The revenue related to deposit fees is recognized at the time the performance obligation is satisfied. ATM/debit card revenue. The Company generates revenue through service charges on the use of its ATM machines and interchange income from the use of Company issued credit and debit cards. The revenue is recognized at the time the service is used and the performance obligation is satisfied. Other income. Treasury management fees and lock box fees are received and recorded after the service performance obligation is completed. Merchant bank card fees are received from various vendors; however, the performance obligation is with the vendors. The Company records gains on the sale of loans and the sale of OREO properties after the transactions are complete and transfer of ownership has occurred. As each of the Company’s facilities is in markets with similar economies, no disaggregation of revenue is necessary. Accumulated Other Comprehensive Income The components of accumulated other comprehensive income included in stockholders’ equity as of September 30, 2021 and December 31, 2020 are as follows (in Unrealized Gain (Loss) on Securities September 30, 2021 Net unrealized gains on securities available-for-sale $ 7,934 Tax expense (2,301 ) Balance at September 30, 2021 $ 5,633 December 31, 2020 Net unrealized gains on securities available-for-sale $ 24,077 Tax expense (6,982 ) Balance at December 31, 2020 $ 17,095 Amounts reclassified from accumulated other comprehensive income and the affected line items in the statements of income during the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands): Amounts Reclassified from Other Comprehensive Income Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Affected Line Item in the Statements of Income Realized gains on available-for-sale securities $ 11 $ 95 $ 88 $ 913 Securities gains, net Tax effect (3 ) (28 ) (26 ) (265 ) Income taxes Total reclassifications out of accumulated other comprehensive income $ 8 $ 67 $ 62 $ 648 Net reclassified amount See “Note 3 – Investment Securities” for more detailed information regarding unrealized losses on available-for-sale securities. 13 Adoption of New Accounting Guidance Accounting Standards Update 2018-13, Fair Value Measurements (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”). In August 2018, FASB issued ASU 2018-13. This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, an entity will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019. As ASU 2018-13 only revises disclosure requirements, it did not have a material impact on the Company’s consolidated financial statements. Accounting Standards Update 2016-13, Financial Instruments - Credit Losses In June 2016, FASB issued ASU 2016-13. The provisions of ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for sale debt securities. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Management formed an internal, cross functional committee in 2017 to evaluate implementation steps and assess the impact ASU 2016-13 would have on the Company’s consolidated financial statements. The committee assigned roles and responsibilities, key tasks to complete, and established a general time-line for implementation. The Company also engaged an The Company adopted ASU 2016-13 using the modified retrospective method for financial assets measured at amortized cost-effective January 1, 2020. Results for the periods beginning after January 1, 2020 are presented under ASU 2016-13 while prior period amounts are reported in accordance with the previously applicable accounting standards. The Company recorded a reduction to retained earnings of approximately $717,000 upon adoption of ASU 2016-13. The transition adjustment included an increase to the allowance for credit losses on loans of $1.7 million and an increase to the allowance for credit losses on off-balance sheet credit exposure of $69,000. There was no allowance for credit losses recorded for held-to- maturity debt securities. The transition adjustment included corresponding increases in deferred tax assets. The Company adopted ASU 2016-13 using the prospective transition approach for financial assets considered purchased credit deteriorated ("PCD") that were previously classified as purchase credit impaired ("PCI") and accounted for under ASC 310-30 effective January 1, 2020. In accordance with the standard, the Company did not reassess whether the PCI assets met the criteria of PCD assets as of the adoption date. The amortized cost of the PCD assets were adjusted to reflect the addition of $833,000 to the allowance for credit losses. The remaining noncredit discount (based on the adjusted amortized cost) will be accreted into interest income at the effective interest rate over the remaining life of the assets. The following table illustrates the impact of ASU 2016-13 adoption (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Assets: Construction and land development $ 1,033 $ 1,146 $ (113 ) Agricultural real estate 1,323 1,093 230 1-4 family residential properties 2,142 1,386 756 Commercial real estate 11,739 11,198 541 Agricultural 1,023 1,386 (363 ) Commercial and industrial 9,428 9,273 155 Consumer 1,895 1,429 466 Allowance for credit losses for all loans $ 28,583 $ 26,911 $ 1,672 Liabilities: Allowance for credit losses on off-balance sheet exposures $ 69 $ — $ 69 14 T he following table illustrates the impact of ASU 2013-13 adoption for PCD assets previously classified as PCI included in the table above (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Construction and land development $ 291 $ — $ 291 1-4 family residential properties 48 6 42 Commercial real estate 818 359 459 Commercial and industrial 41 — 41 Allowance for credit losses for PCD loans $ 1,198 $ 365 $ 833

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Note 2 -- Earnings Per Share Basic net income per common share available to common stockholders is calculated as net income less preferred stock dividends divided by the weighted average number of common shares outstanding. Diluted net income per common share available to common stockholders is computed using the weighted average number of common shares outstanding, increased by the Company’s stock options, unless anti-dilutive. The components of basic and diluted net income per common share available to common stockholders for the three and nine months ended September 30, 2021 and 2020 were as follows: Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Basic net income per common share Available to common stockholders: Net income $ 18,326,000 $ 11,565,000 $ 34,656,000 $ 31,701,000 Weighted average common shares outstanding 18,083,126 16,728,191 17,819,619 16,710,485 Basic earnings per common share $ 1.01 $ 0.69 $ 1.94 $ 1.90 Diluted net income per common share Available to common stockholders: Net income applicable to diluted earnings per share $ 18,326,000 $ 11,565,000 $ 34,656,000 $ 31,701,000 Weighted average common shares outstanding 18,083,126 16,728,191 17,819,619 16,710,485 Dilutive potential common shares: restricted stock awarded 53,020 46,908 53,020 46,908 Diluted weighted average common shares outstanding 18,136,146 16,775,099 17,872,639 16,757,393 Diluted earnings per common share $ 1.01 $ 0.69 $ 1.94 $ 1.89 There were no shares excluded when computing diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 because they were anti-dilutive.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	15 Note 3 -- Investment Securities The amortized cost, gross unrealized gains and losses and estimated fair values for available-for-sale and held-to-maturity securities by major security type at September 30, 2021 and December 31, 2020 were as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value September 30, 2021 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 194,162 $ 308 $ (2,786 ) $ 191,684 Obligations of states and political subdivisions 328,394 11,310 (960 ) 338,744 Mortgage-backed securities: GSE residential 783,400 6,300 (7,085 ) 782,615 Other securities 33,076 883 (36 ) 33,923 Total available-for-sale $ 1,339,032 $ 18,801 $ (10,867 ) $ 1,346,966 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 5,004 $ 31 $ — $ 5,035 Other securities 2,022 — — 2,022 Total held-to-maturity $ 7,026 $ 31 $ — $ 7,057 December 31, 2020 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 127,067 $ 790 $ (788 ) $ 127,069 Obligations of states and political subdivisions 237,886 11,995 (37 ) 249,844 Mortgage-backed securities: GSE residential 479,470 12,038 (160 ) 491,348 Other securities 10,740 252 (13 ) 10,979 Total available-for-sale $ 855,163 $ 25,075 $ (998 ) $ 879,240 Held-to-maturity: U.S. Treasury securities and obligations of U.S government corporations and agencies $ 5,016 $ 103 $ — $ 5,119 The Company also had $348,000 and $218,000 of equity securities, at fair value, as of September 30, 2021 and December 31, 2020, respectively. The Company's held-to-maturity securities are government agency-backed securities for which the risk of loss is minimal. As such, as of September 30, 2021, the Company did not record an allowance for credit losses on its held-to-maturity securities. Realized gains and losses resulting from sales of securities were as follows during the three and nine months ended September 30, 2021 and 2020 (in thousands): Three months September 30, Nine months September 30, 2021 2020 2021 2020 Gross gains $ 11 $ 116 $ 88 $ 934 Gross losses — (21 ) — (21 ) 16 The following table indicates the expected maturities of investment securities classified as available-for-sale presented at fair value, and held-to-maturity presented at amortized cost, at September 30, 2021 and the weighted average yield for each range of maturities (dollars in thousands): One year or less After 1 through 5 years After 5 through 10 years After ten years Total Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 116,855 $ 63,561 $ 11,268 $ — $ 191,684 Obligations of state and political subdivisions 24,335 82,566 224,078 7,765 338,744 Mortgage-backed securities: GSE residential 17,950 410,157 354,508 — 782,615 Other securities 6,055 24,860 3,008 — 33,923 Total available-for-sale investments $ 165,195 $ 581,144 $ 592,862 $ 7,765 $ 1,346,966 Weighted average yield 1.61 % 1.95 % 1.68 % 2.43 % 1.79 % Full tax-equivalent yield 1.78 % 2.10 % 1.94 % 3.16 % 2.00 % Held to maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 5,004 $ — $ — $ — $ 5,004 Other securities — 2,022 2,022 Total held-to-maturity $ 5,004 $ — $ — $ 2,022 $ 7,026 Weighted average yield 2.06 % — % — % — % 2.06 % Full tax-equivalent yield 2.06 % — % — % — % 2.06 % The weighted average yields are calculated based on the amortized cost and effective yields weighted for the scheduled maturity of each security. Tax-equivalent yields have been calculated using a 21% tax rate. With the exception of obligations of the U.S. Treasury and other U.S. government agencies and corporations, there were no investment securities of any single issuer, the book value of which exceeded 10% of stockholders' equity at September 30, 2021. Investment securities carried at approximately $740 million and $531 million at September 30, 2021 and December 31, 2020, respectively, were pledged to secure public deposits and repurchase agreements and for other purposes as permitted or required by law. The following table presents the aging of gross unrealized losses and fair value by investment category as of September 30, 2021 and December 31, 2020 (in thousands): Less than 12 months 12 months or more Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2021 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 145,432 $ (2,435 ) $ 9,649 $ (351 ) $ 155,081 $ (2,786 ) Obligations of states and political subdivisions 87,767 (960 ) — — 87,767 (960 ) Mortgage-backed securities: GSE residential 508,332 (7,084 ) 93 (1 ) 508,425 (7,085 ) Other securities 11,057 (36 ) — — 11,057 (36 ) Total $ 752,588 $ (10,515 ) $ 9,742 $ (352 ) $ 762,330 $ (10,867 ) December 31, 2020 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 59,211 $ (788 ) $ — $ — $ 59,211 $ (788 ) Obligations of states and political subdivisions 5,380 (37 ) — — 5,380 (37 ) Mortgage-backed securities: GSE residential 57,609 (160 ) 2,377 — 59,986 (160 ) Other securities 3,977 (13 ) — — 3,977 (13 ) Total $ 126,177 $ (998 ) $ 2,377 $ — $ 128,554 $ (998 ) 17 U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies. At September 30, 2021 and December 31, 2020, there was one available-for-sale security with a fair value of $9,649,000 Obligations of states and political subdivisions. At September 30, 2021, there were no obligations of states and political subdivisions in a continuous loss position for twelve months or more. Mortgage-backed Securities: GSE Residential. At September 30, 2021, there were eleven mortgage-backed securities with a fair value of $93,000 and unrealized losses of $1,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2020 there were two mortgage-backed securities with a fair value of $2,377,000 and unrealized losses of $0 in a continuous unrealized loss position for twelve months or more. Other securities. At September 30, 2021, and December 31, 2020, there were no other securities in a continuous unrealized loss position for twelve months or more. The Company does not believe any unrealized losses as of September 30, 2021 represents other than temporary impairment ("OTTI"). However, given the uncertainty of the financial markets, the Company may be required to recognize OTTI losses in future periods with respect to its available for sale investment securities portfolio. The amount and timing of any additional OTTI will depend on the decline in the underlying cash flows of the securities. Should the impairment of any of these securities become other-than-temporary, the cost basis of the investment will be reduced, and the resulting loss recognized in the period the other-than-temporary impairment is identified.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Loans and Allowance for Credit Losses	90 Days and Accruing September 30, 2021 Construction and land development $ 458 $ 9 $ 642 $ 1,109 $ 178,952 $ 180,061 $ — Agricultural real" id="sjs-B4">Note 4 – Loans and Allowance for Credit Losses Loans are stated at amortized cost net of an allowance for credit losses. Amortized cost is the unpaid principal net of unearned premiums and discounts, and net deferred origination fees and costs. Deferred loan origination fees are reduced by loan origination costs and are amortized to interest income over the life of the related loan using methods that approximated the effective interest rate method. Interest on substantially all loans is credited to income based on the principal amount outstanding. A summary of loans at September 30, 2021 and December 31, 2020 follows (in thousands): September 30, 2021 December 31, 2020 Construction and land development $ 179,792 $ 122,853 Agricultural real estate 278,432 254,662 1-4 family residential properties 412,320 325,480 Multifamily residential properties 306,966 189,265 Commercial real estate 1,583,583 1,176,290 Loans secured by real estate 2,761,093 2,068,550 Agricultural loans 126,473 137,333 Commercial and industrial loans 839,630 741,819 Consumer loans 80,779 78,023 All other loans 143,724 118,196 Total gross loans 3,951,699 3,143,921 Less: loans held for sale 1,897 1,924 3,949,802 3,141,997 Less: Net deferred loan fees, premiums and discounts 3,930 5,502 Allowance for credit losses 53,983 41,910 Net loans $ 3,891,889 $ 3,094,585 Loans expected to be sold are classified as held for sale in the consolidated financial statements and are recorded at the lower of aggregate cost or fair value, taking into consideration future commitments to sell the loans. These loans are primarily for 1-4 family residential properties. Accrued interest on loans, which is excluded from the amortized cost of the balances above, totaled $16.5 million and $15.9 million at September 30, 2021 and December 31, 2020, respectively. 18 Most of the Company’s business activities are with customers located near the Company's branch locations in Illinois, Missouri, and Texas. At September 30, 2021, the Company’s loan portfolio included $405.3 million of loans to borrowers whose businesses are directly related to agriculture. Of this amount, $285.2 million was concentrated in corn and other grain farming. Total loans to borrowers whose businesses are directly related to agriculture increased $13.6 million from $391.7 million at December 31, 2020 due to seasonal timing of cash flow requirements. Loans concentrated in corn and other grain farming decreased $23.0 million from $308.2 million at December 31, 2020. The Company's underwriting practices include collateralization of loans. Any extended period of low commodity prices, drought conditions, significantly reduced yields on crops and/or reduced levels of government assistance to the agricultural industry could result in an increase in the level of problem agriculture loans and potentially result in loan losses within the agricultural portfolio. In addition, the Company has $121.2 million of loans to motels and hotels. The performance of these loans is dependent on borrower specific issues as well as the general level of business and personal travel within the region. While the Company adheres to sound underwriting standards, a prolonged period of reduced business or personal travel could result in an increase in nonperforming loans to this business segment and potentially in loan losses. The Company also has $637.5 million of The structure of the Company’s loan approval process is based on progressively larger lending authorities granted to individual loan officers, loan committees, and ultimately the board of directors. Outstanding balances to one borrower or affiliated borrowers are limited by federal regulation and most borrowers are below regulatory thresholds. The Company can occasionally have outstanding balances to one borrower up to but not exceeding the regulatory threshold should underwriting guidelines warrant. Most of the Company’s loans are to businesses located in the The Company’s lending can be summarized into the following primary areas: Commercial Real Estate Loans. Commercial real estate loans are generally comprised of loans to small business entities to purchase or expand structures in which the business operations are housed, loans to owners of real estate who lease space to non-related commercial entities, loans for construction and land development, loans to hotel operators, and loans to owners of multi-family residential structures, such as apartment buildings. Commercial real estate loans are underwritten based on historical and projected cash flows of the borrower and secondarily on the underlying real estate pledged as collateral on the debt. For the various types of commercial real estate loans, minimum criteria have been established within the Company’s loan policy regarding debt service coverage while maximum limits on loan-to-value and amortization periods have been defined. Maximum loan-to-value ratios range from 65% to 80% depending upon the type of real estate collateral, while the desired minimum debt coverage ratio is 1.20x. Amortization periods for commercial real estate loans are generally limited to twenty or twenty five years, depending on the loan-to-value. The Company’s commercial real estate portfolio is below the thresholds that would designate a concentration in commercial real estate lending, as established by the federal banking regulators. Commercial and Industrial Loans. Commercial and industrial loans are primarily comprised of working capital loans used to purchase inventory and fund accounts receivable that are secured by business assets other than real estate. These loans are generally written for one year or less. Also, equipment financing is provided to businesses with these loans generally limited to 80% of the value of the collateral and amortization periods limited to seven years. Commercial loans are often accompanied by a personal guaranty of the principal owners of a business. Like commercial real estate loans, the underlying cash flow of the business is the primary consideration in the underwriting process. The financial condition of commercial borrowers is monitored at least annually with the type of financial information required determined by the size of the relationship. Measures employed by the Company for businesses with higher risk profiles include the use of government- assisted lending programs through the Small Business Administration and U.S. Department of Agriculture. Agricultural and Agricultural Real Estate Loans. Agricultural loans are generally comprised of seasonal operating lines to cash grain farmers to plant and harvest corn and soybeans and term loans to fund the purchase of equipment. Agricultural real estate loans are primarily comprised of loans for the purchase of farmland. Specific underwriting standards have been established for agricultural-related loans including the establishment of projections for each operating year based on industry developed estimates of farm input costs and expected commodity yields and prices. Operating lines are typically written for one year and secured by the crop. Loan-to-value ratios on loans secured by farmland generally do not exceed 65% and have amortization periods limited to twenty-five years. Federal government-assistance lending programs through the Farm Service Agency are used to mitigate the level of credit risk when deemed appropriate. 19 Residential Real Estate Loans. Residential real estate loans generally include loans for the purchase or refinance of residential real estate properties consisting of one-to-four units and home equity loans and lines of credit. The Company sells most of its long-term fixed rate residential real estate loans to secondary market investors. The Company also releases the servicing of these loans upon sale. Residential real estate loans are typically underwritten to conform to industry standards including criteria for maximum debt-to-income and loan-to-value ratios as well as minimum credit scores. Loans secured by first liens on residential real estate held in the portfolio typically do not exceed 80% of the value of the collateral and have amortization periods of twenty-five years or less. The Company does not originate subprime mortgage loans. Consumer Loans. Consumer loans are primarily comprised of loans to individuals for personal and household purposes such as the purchase of an automobile or other living expenses. Minimum underwriting criteria have been established that consider credit score, debt-to-income ratio, employment history, and collateral coverage. Typically, consumer loans are set up on monthly payments with amortization periods based on the type and age of the collateral. Other Loans. Other loans consist primarily of loans to municipalities to support community projects such as infrastructure improvements or equipment purchases. Underwriting guidelines for these loans are consistent with those established for commercial loans with the additional repayment source of the taxing authority of the municipality. Allowance for Credit Losses The allowance for credit losses represents the Company’s best estimate of the reserve necessary to adequately account for probable losses expected over the remaining contractual life of the assets. The provision for credit losses is the charge against current earnings that is determined by the Company as the amount needed to maintain an adequate allowance for credit losses. In determining the adequacy of the allowance for credit losses, and therefore the provision to be charged to current earnings, the Company relies predominantly on a disciplined credit review and approval process that extends to the full range of the Company’s credit exposure. The review process is directed by the overall lending policy and is intended to identify, at the earliest possible stage, borrowers who might be facing financial difficulty. Factors considered by the Company in evaluating the overall adequacy of the allowance include historical net loan losses, the level and composition of nonaccrual, past due and troubled debt restructurings, trends in volumes and terms of loans, effects of changes in risk selection and underwriting standards or lending practices, lending staff changes, concentrations of credit, industry conditions and the current economic conditions in the region where the Company operates. The Company estimates the appropriate level of allowance for credit losses by evaluating large individually evaluated loans separately from non-individually evaluated loans. Individually Evaluated Loans The Company individually evaluates certain loans for impairment. In general, these loans have been internally identified via the Company’s loan grading system as credits requiring management’s attention due to underlying problems in the borrower’s business or collateral concerns. This evaluation considers expected future cash flows, the value of collateral and other factors that may impact the borrower’s ability to make payments when due. For loans greater than $250,000, impairment is individually measured each quarter using one of three alternatives: (1) the present value of expected future cash flows discounted at the loan’s Non-Individually Evaluated Loans Non-individually evaluated loans comprise the vast majority of the Company’s total loan portfolio and include loans in accrual status and those credits not identified as troubled debt restructurings. A small portion of these loans are considered “criticized” due to the risk rating assigned reflecting elevated credit risk due to characteristics, such as a strained cash flow position, associated with the individual borrowers. Criticized loans are those assigned risk ratings of Special Mention, Substandard, or Doubtful. 20 Beginning January 1 , 2020, the allowance for credit losses was estimated using the current expected credit loss model ("CECL"). The Company uses the Loss Rate method to estimate the historical loss rate for all non -individually evaluated loans. Under this method, the allowance for credit losses is measured on a collective (pool) basis for non- individually evaluated loans with similar risk characteristics. Historical credit loss experience provides the basis for the estimate of expected credit losses. For each pool, a historical loss rate is computed based on the average remaining contractual life of the pool. Adjustments to historical loss rates are made using qualitative factors relevant to each pool including merger & acquisition activity, economic conditions, changes in policies, procedures & underwriting, and concentrations. In addition, a twelve-month forecast, using reasonable and supportable future conditions, is prepared that is used to estimate expected changes to existing and historical conditions in the current period. The Company also considers specific current economic events occurring globally, in the U.S. and in its local markets. In March 2020, in response to the COVID-19 outbreak, its significant disruptions in the U.S. economy and impacts on local markets, First Mid Bank offered a 90-day commercial deferral program, primarily to hotel and restaurant borrowers. In accordance with interagency guidance issued in March 2020, these short-term deferrals are not considered troubled debt restructurings. These deferrals were, however, considered in the factors used to estimate the required allowance for credit losses for non-individually evaluated loans. Other COVID-19 related impacts considered included revenue losses of businesses required to restrict or cease services, income loss to workers laid off as a result of COVID-19 restrictions, various federal and state government stimulus programs and additional deferral programs offered by First Mid Bank beginning in April 2020. Other events considered include the status of trade agreements with China, scheduled increases in minimum wage and changes to the minimum salary threshold for overtime provisions, current and projected unemployment rates, current and projected grain and oil prices and economies of local markets where customers work and operate. Within each pool, risk elements are evaluated that have specific impacts to the borrowers within the pool. These, along with the general risks and events, and the specific lending policies and procedures by loan type described above, are analyzed to estimate the qualitative factors used to adjust the historical loss rates. During the current period, the following assumptions and factors were considered when determining the historical loss rate and any potential adjustments by loan pool. Construction and Land Development Loans. The average life of the construction and land development segment was determined to be twelve months. Historical losses in this segment remained very low. Current activity in this industry was deemed essential and has continued during COVID-19. While staffing shortages and supply chain disruptions cause risk in this segment, most projects are associated with financially strong borrowers. The qualitative factor for this segment was decreased slightly. Agricultural Real Estate Loans. The average life of the agricultural real estate segment was determined to be thirty-six months. Historical losses in the segment remain very low. Farmland values have remained steady over an extended period of time and there are no indications that this will change in the next year. There was a slight decrease to the qualitative factor for this segment. 1- 4 Family Residential Properties Loans. The average life of the 1-4 Family Residential segment was determined to be: Residential Real Estate-non-owner occupied, sixty months; Residential Real Estate-owner occupied, sixty months; Home Equity lines of credit, thirty months. COVID-19 has impacted the finances of consumers from layoffs and furloughs resulting from employers that must reduce or suspend operations. Increased risk in this segment includes consumer ability to make mortgage and rent payments. Some of this impact has been offset by governmental actions such as stimulus payments and extended unemployment benefits. First Mid Bank also offered short-term loan payment deferral to borrowers in this segment. The qualitative factors on both non-owner occupied and owner-occupied loans for this segment were decreased slightly. Commercial Real Estate Loans. The average life of the commercial real estate segment was determined to be thirty-six months. This segment includes the Company's majority of exposure to the hotel industry which has been significantly impacted by COVID-19 events. Other impacted industries in this segment include restaurants and retail establishments. First Mid Bank has implemented deferral programs for borrowers in this segment in order to ease the impact to these borrowers. The qualitative factors on both non-owner occupied and owner-occupied loans for this segment were decreased slightly. Agricultural Loans. The average life of the agricultural segment was determined to be eighteen months. Losses in this segment are very low and it is believed that borrowers in this segment will benefit from current governmental programs such as PPP and MFP. Many farmers are holding grain from the 2019 operating season and should be able to take advantage of an increase in prices. The qualitative factor of this segment was decreased slightly. 21 Commercial and Industrial Loans. The average life of the commercial and industrial segment was determined to be twenty-four months. The COVID-19 impacts include forced closures and scaled-back services for many industries within this segment including retailers, restaurants, and video gaming establishments. Some of this risk is offset by government relief programs as well as, First Mid Bank's payment deferral program. The qualitative factor for this segment was decreased slightly . Consumer Loans. The average life of the consumer segment was determined to be thirty-six months. The financial status of many borrowers has been impacted by COVID-19 events including layoffs and reduced hours. Some of this impact has been offset by government stimulus programs, increased paid leave and increased and extended unemployment benefits, however these benefits are now expiring. Additionally, First Mid Bank has offered a short-term payment deferral program. The qualitative factor for this segment was decreased slightly. Acquired Loans. Prior to January 1, 2020 loans acquired with evidence of credit deterioration since origination and for which it was probable that all contractually required payments would not be collected were considered purchased credit impaired at the time of acquisition. Purchase credit-impaired ("PCI") loans were accounted for under ASC 310-30, Receivables--Loans and Debt Securities Acquired with Deteriorated Credit Quality ("ASC 310-30"), and were initially measured at fair value, which included the estimated future credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for credit losses related to these loans was not carried over and recorded at the acquisition date. The cash flows expected to be collected were estimated using current key assumptions, such as default rates, value of underlying collateral, severity and prepayment speeds. Subsequent to January 1, 2020, loans acquired in a business combination that have experienced more-than-insignificant deterioration in credit quality since origination are considered purchased credit deteriorated (“PCD”) loans. At the For acquired loans not deemed purchased credit deteriorated at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans. At the acquisition date, an initial allowance for expected credit losses is estimated and recorded as credit loss expense. The subsequent measurement of expected credit losses for all acquired loans is the same as the subsequent measurement of expected credit losses for originated loans. 22 The following table presents the activity in the allowance for credit losses based on portfolio segment for the three and nine months ended September 30, 2021 (in thousands): Construction and Land Development Agricultural Real Estate 1-4 Family Residential Properties Commercial Real Estate Agricultural Loans Commercial and Industrial Consumer Loans Total Three months ended September 30, 2021 Beginning balance $ 1,795 $ 1,665 $ 2,570 $ 25,664 $ 906 $ 19,842 $ 2,155 $ 54,597 Provision for credit loss expense 314 (408 ) 27 (52 ) (90 ) 342 970 1,103 Loans charged off — — 45 55 — 1,600 376 2,076 Recoveries collected — — 108 23 — 24 204 359 Ending balance $ 2,109 $ 1,257 $ 2,660 $ 25,580 $ 816 $ 18,608 $ 2,953 $ 53,983 Nine months ended September 30, 2021 Beginning balance $ 1,666 $ 1,084 $ 2,322 $ 19,660 $ 1,526 $ 13,485 $ 2,167 $ 41,910 Initial allowance on loans purchased with credit deterioration 261 44 328 646 — 795 — 2,074 Provision for credit loss expense 205 129 117 5,764 (711 ) 5,950 1,225 12,679 Loans charged off 23 — 241 535 — 1,686 1,008 3,493 Recoveries collected — — 134 45 1 64 569 813 Ending balance $ 2,109 $ 1,257 $ 2,660 $ 25,580 $ 816 $ 18,608 $ 2,953 $ 53,983 23 The following tables present the activity in the allowance for credit losses based on portfolio segment for the three and nine months ended September 30, 2020 and for the year ended December 31, 2020 (in thousands): Construction and Land Development Agricultural Real Estate 1-4 Family Residential Properties Commercial Real Estate Agricultural Loans Commercial and Industrial Consumer Loans Total Three months ended September 30, 2020 Beginning balance (prior to adoption of ASC 326) $ 2,358 $ 1,634 $ 2,486 $ 16,272 $ 1,323 $ 12,360 $ 1,948 $ 38,381 Provision for credit loss expense (139 ) 32 (71 ) 2,463 (89 ) 1,352 335 3,883 Loans charged off 13 — 48 — — 368 127 556 Recoveries collected — — 24 73 — 28 82 207 Ending balance $ 2,206 $ 1,666 $ 2,391 $ 18,808 $ 1,234 $ 13,372 $ 2,238 $ 41,915 Nine months ended September 30, 2020 Beginning balance (prior to adoption of ASC 326) $ 1,146 $ 1,093 $ 1,386 $ 11,198 $ 1,386 $ 9,273 $ 1,429 $ 26,911 Impact of adopting ASC 326 (113 ) 230 756 541 (363 ) 155 466 1,672 Provision for credit loss expense 1,186 343 335 7,542 211 5,453 430 15,500 Loans charged off 13 — 313 551 — 1,651 414 2,942 Recoveries collected — — 227 78 — 142 327 774 Ending balance $ 2,206 $ 1,666 $ 2,391 $ 18,808 $ 1,234 $ 13,372 $ 2,238 $ 41,915 Twelve months ended December 31, 2020 Beginning balance (prior to adoption of ASC 326) $ 1,146 $ 1,093 $ 1,386 $ 11,198 $ 1,386 $ 9,273 $ 1,429 $ 26,911 Impact of adopting ASC 326 (113 ) 230 756 541 (363 ) 155 466 1,672 Provision for credit loss expense 646 (239 ) 274 8,581 503 5,869 469 16,103 Loans charged off 13 — 393 829 — 1,991 618 3,844 Recoveries collected — — 299 169 — 179 421 1,068 Ending balance $ 1,666 $ 1,084 $ 2,322 $ 19,660 $ 1,526 $ 13,485 $ 2,167 $ 41,910 Consistent with regulatory guidance, charge-offs on all loan segments are taken when specific loans, or portions thereof, are considered uncollectible. The Company’s policy is to promptly charge these loans off in the period the uncollectible loss is reasonably determined. For all loan portfolio segments except 1-4 family residential properties and consumer, the Company promptly charges-off loans, or portions thereof, when available information confirms that specific loans are uncollectible based on information that includes, but is not limited to, (1) the deteriorating financial condition of the borrower, (2) declining collateral values, and/or (3) legal action, including bankruptcy, that impairs the borrower’s ability to adequately meet its obligations. For individually evaluated loans that are considered solely collateral dependent, a partial charge-off is recorded when a loss has been confirmed by an updated appraisal or other appropriate valuation of the collateral. The Company charges-off 1-4 family residential and consumer loans, or portions thereof, when the Company reasonably determines the amount of the loss. The Company adheres to timeframes established by applicable regulatory guidance which provides for the charge-down of 1-4 family first and junior lien mortgages to the net realizable value less costs to sell when the loan is 180 days past due, charge-off of unsecured open-end loans when the loan is 180 days past due, and charge down to the net realizable value when other secured loans are 120 days past due. Loans at these respective delinquency thresholds for which the Company can clearly document that the loan is both well-secured and in the process of collection, such that collection will occur regardless of delinquency status, need not be charged off. 24 The following table presents the amortized cost basis of collateral-dependent loans by class of loans that were individually evaluated to determine expected credit losses, and the related allowance for credit losses, as of September 30, 2021 (in thousands): Collateral Allowance Real Estate Business Assets Other Total for Credit Losses Construction and land development $ 1,407 $ — $ — $ 1,407 $ 233 1-4 family residential properties 5,438 — — 5,438 245 Multifamily residential properties 1,805 — — 1,805 — Commercial real estate 10,830 — — 10,830 864 Loans secured by real estate 19,480 — — 19,480 1,342 Commercial and industrial loans — 2,146 1,067 3,213 1,190 Consumer loans — — 10 10 — Other loans — 24 — 24 — Total loans $ 19,480 $ 2,170 $ 1,077 $ 22,727 $ 2,532 Credit Quality The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, collateral support, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis is performed on a continuous basis. The Company uses the following definitions for risk ratings which are commensurate with a loan considered “criticized”: Special Mention. Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Substandard. Loans classified as substandard are inadequately protected by the current sound-worthiness 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 institution 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, based on currently existing factors, conditions and values, highly questionable and improbable. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered pass rated loans. 25 The following tables present the credit risk profile of the Company’s loan portfolio on amortized cost basis based on risk rating category and year of origination as of September 30, 2021 (in thousands): Term Loans by Origination Year Revolving Risk rating 2021 2020 2019 2018 2017 Prior Loans Total September 30, 2021 Construction and land development loans Pass $ 33,540 $ 68,429 $ 26,623 $ 34,739 $ 3,841 $ 11,328 $ — $ 178,500 Special mention 112 — — — — — — 112 Substandard — — — 915 — 534 — 1,449 Total $ 33,652 $ 68,429 $ 26,623 $ 35,654 $ 3,841 $ 11,862 $ — $ 180,061 Agricultural real estate loans Pass $ 62,342 $ 65,820 $ 30,303 $ 36,823 $ 13,095 $ 57,580 $ — $ 265,963 Special mention 825 259 4,184 417 388 6,010 — 12,083 Substandard — — 265 189 57 231 — 742 Total $ 63,167 $ 66,079 $ 34,752 $ 37,429 $ 13,540 $ 63,821 $ — $ 278,788 1-4 family residential property loans Pass $ 73,424 $ 101,161 $ 36,828 $ 48,656 $ 33,013 $ 52,995 $ 42,664 $ 388,741 Special mention 80 149 1,952 505 2,628 1,054 56 6,424 Substandard 178 570 1,556 1,688 3,662 8,758 988 17,400 Total $ 73,682 $ 101,880 $ 40,336 $ 50,849 $ 39,303 $ 62,807 $ 43,708 $ 412,565 Commercial real estate loans Pass $ 357,285 $ 445,335 $ 310,825 $ 180,042 $ 161,629 $ 376,631 $ — $ 1,831,747 Special mention 3,369 886 1,198 1,418 10,726 15,251 — 32,848 Substandard 2,380 736 6,525 1,811 4,716 9,403 — 25,571 Total $ 363,034 $ 446,957 $ 318,548 $ 183,271 $ 177,071 $ 401,285 $ — $ 1,890,166 Agricultural loans Pass $ 75,148 $ 19,930 $ 5,582 $ 3,653 $ 1,074 $ 1,480 $ — $ 106,867 Special mention 15,568 436 2,957 155 160 65 — 19,341 Substandard 27 18 — — — 281 — 326 Total $ 90,743 $ 20,384 $ 8,539 $ 3,808 $ 1,234 $ 1,826 $ — $ 126,534 Commercial and industrial loans Pass $ 152,729 $ 184,801 $ 166,553 $ 77,324 $ 3,402 $ 384,318 $ — $ 969,127 Special mention 844 542 1,725 568 416 1,155 — 5,250 Substandard 428 711 448 1,588 71 1,968 — 5,214 Total $ 154,001 $ 186,054 $ 168,726 $ 79,480 $ 3,889 $ 387,441 $ — $ 979,591 Consumer loans Pass $ 20,854 $ 21,547 $ 27,317 $ 6,633 $ 2,640 $ 492 $ — $ 79,483 Special mention 21 78 55 10 — — — 164 Substandard 98 17 75 51 30 146 — 417 Total $ 20,973 $ 21,642 $ 27,447 $ 6,694 $ 2,670 $ 638 $ — $ 80,064 Total loans Pass $ 775,322 $ 907,023 $ 604,031 $ 387,870 $ 218,694 $ 884,824 $ 42,664 $ 3,820,428 Special mention 20,819 2,350 12,071 3,073 14,318 23,535 56 76,222 Substandard 3,111 2,052 8,869 6,242 8,536 21,321 988 51,119 Total $ 799,252 $ 911,425 $ 624,971 $ 397,185 $ 241,548 $ 929,680 $ 43,708 $ 3,947,769 26 The following tables present the credit risk profile of the Company’s loan portfolio based on risk rating category as of December 31, 2020 (in thousands): Term Loans by Origination Year Revolving Risk rating 2020 2019 2018 2017 2016 Prior Loans Total December 31, 2020 Construction and land development loans Pass $ 41,842 $ 40,989 $ 31,500 $ 2,760 $ 871 $ 3,822 $ — $ 121,784 Special mention — — — — — — — — Substandard — 128 — 517 — 50 — 695 Total $ 41,842 $ 41,117 $ 31,500 $ 3,277 $ 871 $ 3,872 $ — $ 122,479 Agricultural real estate loans Pass $ 73,630 $ 34,412 $ 37,839 $ 16,138 $ 13,559 $ 58,291 $ — $ 233,869 Special mention 1,845 3,970 533 469 1,106 11,232 — 19,155 Substandard — — 800 208 64 245 — 1,317 Total $ 75,475 $ 38,382 $ 39,172 $ 16,815 $ 14,729 $ 69,768 $ — $ 254,341 1-4 family residential property loans Pass $ 81,366 $ 29,695 $ 38,163 $ 23,086 $ 26,676 $ 62,942 $ 40,363 $ 302,291 Special mention 192 2,142 523 2,720 247 1,578 293 7,695 Substandard 296 695 1,915 1,859 1,996 7,516 1,499 15,776 Total $ 81,854 $ 32,532 $ 40,601 $ 27,665 $ 28,919 $ 72,036 $ 42,155 $ 325,762 Commercial real estate loans Pass $ 368,750 $ 237,119 $ 171,591 $ 148,283 $ 143,400 $ 215,616 $ — $ 1,284,759 Special mention 2,469 1,300 6,108 11,262 6,741 16,947 — 44,827 Substandard 1,863 40 7,081 2,022 4,905 18,435 — 34,346 Total $ 373,082 $ 238,459 $ 184,780 $ 161,567 $ 155,046 $ 250,998 $ — $ 1,363,932 Agricultural loans Pass $ 83,377 $ 15,680 $ 5,978 $ 1,838 $ 635 $ 2,856 $ — $ 110,364 Special mention 21,070 4,483 694 224 148 38 — 26,657 Substandard 68 238 25 — — — — 331 Total $ 104,515 $ 20,401 $ 6,697 $ 2,062 $ 783 $ 2,894 $ — $ 137,352 Commercial and industrial loans Pass $ 371,683 $ 132,148 $ 70,497 $ 78,890 $ 42,439 $ 114,904 $ — $ 810,561 Special mention 4,116 32,130 849 489 1,101 730 — 39,415 Substandard 889 2,360 532 1,689 136 969 — 6,575 Total $ 376,688 $ 166,638 $ 71,878 $ 81,068 $ 43,676 $ 116,603 $ — $ 856,551 Consumer loans Pass $ 31,609 $ 21,384 $ 12,084 $ 8,279 $ 3,150 $ 1,022 $ — $ 77,528 Special mention — 24 24 1 1 — — 50 Substandard 15 16 111 95 67 120 — 424 Total $ 31,624 $ 21,424 $ 12,219 $ 8,375 $ 3,218 $ 1,142 $ — $ 78,002 Total loans Pass $ 1,052,257 $ 511,427 $ 367,652 $ 279,274 $ 230,730 $ 459,453 $ 40,363 $ 2,941,156 Special mention 29,692 44,049 8,731 15,165 9,344 30,525 293 137,799 Substandard 3,131 3,477 10,464 6,390 7,168 27,335 1,499 59,464 Total $ 1,085,080 $ 558,953 $ 386,847 $ 300,829 $ 247,242 $ 517,313 $ 42,155 $ 3,138,419 27 The following table presents the Company’s loan portfolio aging analysis at September 30, 2021 and December 31, 2020 (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Total Loans > 90 Days and Accruing September 30, 2021 Construction and land development $ 458 $ 9 $ 642 $ 1,109 $ 178,952 $ 180,061 $ — Agricultural real

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Note 5 -- Goodwill and Intangible Assets The Company has goodwill from business combinations, intangible assets from branch acquisitions, identifiable intangible assets assigned to core deposit relationships and customer lists of First Mid Wealth Management Company and First Mid Insurance. The following table presents gross carrying value and accumulated amortization by major intangible asset class as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Goodwill not subject to amortization (effective 1/1/02) $ 115,613 $ 3,760 $ 108,752 $ 3,760 Intangibles from branch acquisition 3,015 3,015 3,015 3,015 Core deposit intangibles 39,344 23,181 32,355 20,910 Other intangibles 20,561 6,376 16,389 5,222 $ 178,533 $ 36,332 $ 160,511 $ 32,907 During the second quarter of 2021, goodwill of $1.4 million was recorded for the acquisition of certain assets used by BBM & Associates Inc., in connection with its trucking insurance business. All of this goodwill was assigned to First Mid Insurance. Goodwill of $9 million was provisionally recorded for the acquisition and merger of LINCO Bancshares, Inc. (“LINCO”) during the first quarter of 2021. All of this goodwill was assigned to the banking segment of the Company. This goodwill was subsequently adjusted to $5.4 million to reflect adjustments made to finalize the purchase accounting. 31 The following table provides a reconciliation of the purchase price paid for the acquisition of LINCO and the amount of goodwill recorded (in thousands): Unallocated purchase price $ 12,248 Less purchase accounting adjustments: Fair value of securities $ 264 Fair value of loans, net (2,818 ) Fair value of other real estate owned 915 Fair value of premises and equipment 6,360 Fair value of time deposits (2,081 ) Fair value of FHLB advances (975 ) Core deposit intangible 2,025 Other assets 3,293 Other liabilities (184 ) 6,799 $ 5,449 The Company has mortgage servicing rights acquired in previous acquisitions. The following table summarizes the activity pertaining to mortgage servicing rights included in intangible assets as of September 30, 2021, September 30, 2020 and December 31, 2020 (in thousands): September 30, 2021 September 30, 2020 December 31, 2020 Beginning balance $ 516 $ 1,444 $ 1,444 Fair market value adjustment 474 (328 ) (273 ) Mortgage servicing rights amortized (528 ) (415 ) (593 ) Interest only strip (7 ) (40 ) (62 ) Ending balance $ 455 $ 661 $ 516 Total amortization expense for the three and nine months ended September 30, 2021 and 2020 was as follows (in thousands): Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Core deposit intangibles $ 809 $ 804 $ 2,247 $ 2,468 Customer list intangibles 432 326 1,154 979 Mortgage servicing rights 173 147 528 415 $ 1,414 $ 1,277 $ 3,929 $ 3,862 Aggregate amortization expense for the current year and estimated amortization expense for each of the five succeeding years is shown in the table below (in thousands): Aggregate amortization expense: For period 01/01/21-9/30/21 $ 3,929 Estimated amortization expense: For period 10/01/21-12/31/21 2,729 For year ended 12/31/22 5,119 For year ended 12/31/23 4,680 For year ended 12/31/24 4,292 For year ended 12/31/25 3,861 For year ended 12/31/26 3,091 32 In accordance with the provisions of SFAS No. 142, “ Goodwill and Other Intangible Assets ,”

Repurchase Agreements and Other

Repurchase Agreements and Other Borrowings	9 Months Ended
	Sep. 30, 2021
Repurchase Agreements And Other Borrowings [Abstract]
Repurchase Agreements and Other Borrowings	Note 6 -- Repurchase Agreements and Other Borrowings Securities sold under agreements to repurchase were $149.9 million at September 30, 2021, a decrease of $57.0 million from $206.9 million at December 31, 2020. The decrease during the first nine months of 2021 was primarily due to changes in business cash flow needs. All the transactions have overnight maturities with a weighted average rate of 0.13%. The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral pledged by the Company would be used to settle the fair value of the repurchase agreement should the Company be in default (e.g., declare bankruptcy), the Company could cancel the repurchase agreement (i.e., cease payment of principal and interest), and attempt collection on the amount of collateral value in excess of the repurchase agreement fair value. The collateral is held by a third-party financial institution in the counterparty's custodial account. The counterparty has the right to sell or repledge the investment securities. For government entity repurchase agreements, the collateral is held by the Company in a segregated custodial account under a tri-party agreement. The Company is required by the counterparty to maintain adequate collateral levels. In the event the collateral fair value falls below stipulated levels, the Company will pledge additional securities. The Company closely monitors collateral levels to ensure adequate levels are maintained, while mitigating the potential of over-collateralization in the event of counterparty default. Collateral pledged by class for repurchase agreements are as follows (in thousands): September 30, 2021 December 31, 2020 US Treasury securities and obligations of U.S. government corporations and agencies $ 56,324 $ 37,423 Mortgage-backed securities: GSE: residential 93,567 168,480 Miscellaneous — 1,034 Total $ 149,891 $ 206,937 33 FHLB borrowings, before net premiums of $700,000, were $111.9 million and $94 million at September 30, 2021 and December 31, 2020, respectively. At September 30, 2021 the advances were as follows: Advance Term (in years) Interest Rate Maturity Date $ 5,000,000 7.0 2.55% October 1, 2021 5,000,000 5.0 2.71% March 21, 2022 5,000,000 1.0 0.00% May 31, 2022 5,000,000 3.0 2.41% May 31, 2022 5,000,000 3.0 2.12% June 7, 2022 5,000,000 3.0 2.12% June 7, 2022 5,000,000 8.0 2.40% January 9, 2023 5,000,000 4.0 2.44% May 30, 2023 5,000,000 3.5 1.51% July 31, 2023 5,000,000 3.5 0.77% September 11, 2023 10,000,000 5.0 1.45% December 31, 2024 5,000,000 5.0 0.91% March 10, 2025 6,940,511 10.0 2.64% December 23, 2025 5,000,000 10.0 1.14% October 3, 2029 5,000,000 10.0 1.15% October 3, 2029 5,000,000 10.0 1.12% October 3, 2029 10,000,000 10.0 1.39% December 31, 2029 15,000,000 10.0 1.41% December 31, 2029

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Note 7 -- Fair Value of Assets and Liabilities Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements must maximize the use of observable inputs and minimize the use of unobservable inputs. There is a hierarchy of three levels of inputs that may be used to measure fair value: Level 1 Valuations for assets and liabilities traded in active exchange markets, such as the New York Stock Exchange. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2 Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third party pricing services for identical or comparable assets or liabilities which use observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in active markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Following is a description of the inputs and valuation methodologies used for assets measured at fair value on a recurring basis and recognized in the accompanying balance sheets, as well as the general classification of such assets pursuant to the valuation hierarchy. Available-for-Sale Securities. The fair value of available-for-sale securities is determined by various valuation methodologies. Where quoted market prices are available in an active market, securities are classified within Level 1. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independent sources of market parameters, including but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. In certain cases where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy. Fair value determinations for Level 3 measurements of securities are the responsibility of the Treasury function of the Company. The Company contracts with a pricing specialist to generate fair value estimates on a monthly basis. The Treasury function of the Company challenges the reasonableness of the assumptions used and reviews the methodology to ensure the estimated fair value complies with accounting standards generally accepted in the United States, analyzes the changes in fair value and compares these changes to internally developed expectations and monitors these changes for appropriateness. Derivatives. The fair value of derivatives is based on models using observable market data as of the measurement date and are therefore classified in Level 2 of the valuation hierarchy. 34 The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall as of September 30, 2021 and December 31, 2020 (in thousands): Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 191,684 $ — $ 191,684 $ — Obligations of states and political subdivisions 338,744 — 338,128 616 Mortgage-backed securities 782,615 — 782,615 — Other securities 33,923 — 33,923 — Total available-for-sale securities 1,346,966 — 1,346,350 616 Equity securities 348 348 — — Derivative assets: interest rate swaps 35 — 35 — Total assets $ 1,347,349 $ 348 $ 1,346,385 $ 616 Derivative liabilities: interest rate swaps $ 899 $ — $ 899 $ — December 31, 2020 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 127,069 $ — $ 127,069 $ — Obligations of states and political subdivisions 249,844 — 249,050 794 Mortgage-backed securities 491,348 — 491,348 — Other securities 10,979 — 10,979 — Total available-for-sale securities 879,240 — 878,446 794 Equity securities 218 218 193 — Derivative assets: interest rate swaps 1,399 — 1,399 — Total assets $ 880,857 $ 218 $ 880,038 $ 794 Derivative liabilities: interest rate swaps $ 2,892 $ — $ 2,892 $ — The change in fair value of assets measured on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2021 and 2020 is summarized as follows (in thousands): Obligation of State and Political Subdivisions Three months ended Nine months ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Beginning balance $ 615 $ 792 $ 794 $ 973 Transfers into Level 3 — — — — Transfers out of Level 3 — — — — Total gains or losses: Included in net income 1 1 3 4 Included in other comprehensive income (loss) — — — — Purchases, issuances, sales and settlements: Purchases — — — — Issuances — — — — Sales — — — — Settlements — — (181 ) (184 ) Ending balance $ 616 $ 793 $ 616 $ 793 Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date $ — $ — $ — $ — 35 Following is a description of the valuation methodologies used for assets measured at fair value on a nonrecurring basis and recognized in the accompanying balance sheets, as well as the general classification of such assets pursuant to the valuation hierarchy. Collateral Dependent Loans. Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured for impairment. Allowable methods for determining the amount of impairment and estimating fair value include using the fair value of the collateral for collateral dependent loans. If the impaired loan is identified as collateral dependent, then the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Individually evaluated loans that are collateral dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method. Management establishes a specific allowance for individually evaluated loans that have an estimated fair value that is below the carrying value. The total carrying amount of loans for which a change in specific allowance has occurred as of September 30, 2021 was $16,035,000 and a fair value of $13,682,000 resulting in specific loss exposures of $2,353,000. When there is little prospect of collecting principal or interest, loans, or portions of loans, may be charged-off to the allowance for credit losses. Losses are recognized in the period an obligation becomes uncollectible. The recognition of a loss does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan even though partial recovery may be affected in the future. Foreclosed Assets Held For Sale. Other real estate owned acquired through loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. The adjustment at the time of foreclosure is recorded through the allowance for credit losses. Due to the subjective nature of establishing the fair value when the asset is acquired, the actual fair value of the other real estate owned, or foreclosed asset could differ from the original estimate. If it is determined that fair value declines subsequent to foreclosure, a valuation allowance is recorded through noninterest expense. Operating costs associated with the assets after acquisition are also recorded as noninterest expense. Gains and losses on the disposition of other real estate owned and foreclosed assets are netted and posted to other noninterest expense. The total carrying amount of other real estate owned as of September 30, 2021 was $5,625,000. Other real estate owned included in the total carrying amount and measured at fair value on a nonrecurring basis during the period amounted to $1,720,000 Mortgage Servicing Rights. As of September 30, 2021, mortgage servicing rights had a carrying value of $570,000 and a fair value of $455,000 resulting in a valuation reserve of $115,000. The fair value used to determine the valuation reserve for mortgage servicing rights was estimated using the discounted cash flow models. The following table presents the fair value measurement of assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2021 and December 31, 2020 (in thousands): Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Collateral dependent loans $ 13,682 $ — $ — $ 13,682 Foreclosed assets held for sale 1,720 — — 1,720 Mortgage servicing rights 455 — — 455 December 31, 2020 Collateral dependent loans $ 14,876 $ — $ — $ 14,876 Foreclosed assets held for sale 290 — — 290 Mortgage servicing rights 516 — — 517 36 Sensitivity of Significant Unobservable Inputs The following table presents quantitative information about unobservable inputs used in Level 3 fair value measurements other than goodwill at September 30, 2021. September 30, 2021 Fair Value Valuation Technique Unobservable Inputs Range Weighted Average Collateral dependent loans $ 13,682 Third party valuations Discount to reflect realizable value 0% - 40% 20% Foreclosed assets held for sale 1,720 Third party valuations Discount to reflect realizable value less estimated selling costs 0% - 40% 35% Mortgage servicing rights 455 Third party valuations PSA standard prepayment model rate 230 - 438 281 December 31, 2020 Fair Value Valuation Technique Unobservable Inputs Range Weighted Average Collateral dependent loans $ 14,876 Third party valuations Discount to reflect realizable value 0% - 40% 20% Foreclosed assets held for sale 290 Third party valuations Discount to reflect realizable value less estimated selling costs 0% - 40% 35% Mortgage servicing rights 517 Third party valuations PSA standard prepayment model rate 242 - 441 384 37 The following tables present estimated fair values of the Company’s financial instruments at September 30, 2021 and December 31, 2020 in accordance with ASC 825 (in thousands): Carrying Amount Fair Value Level 1 Level 2 Level 3 September 30, 2021 Financial assets Cash and due from banks $ 343,859 $ 343,859 $ 343,859 $ — $ — Federal funds sold 1,347 1,347 1,347 — — Certificates of deposit investments 2,695 2,695 — 2,695 — Available-for-sale securities 1,346,966 1,346,966 — 1,346,351 615 Held-to-maturity securities 7,026 7,057 2,022 5,035 — Equity securities 348 348 348 — — Loans held for sale 1,897 1,897 — 1,897 — Loans net of allowance for credit losses 3,891,889 3,830,149 — — 3,830,149 Interest receivable 22,057 22,057 — 22,057 — Federal Reserve Bank stock 13,845 13,845 — 13,845 — Federal Home Loan Bank stock 6,528 6,528 — 6,528 — Financial liabilities Deposits $ 4,988,562 $ 4,991,225 $ — $ 4,347,567 $ 643,658 Securities sold under agreements to repurchase 149,891 149,896 — 149,896 — Interest payable 2,569 2,569 — 2,569 — Federal Home Loan Bank borrowings 112,641 113,205 — 113,205 — Subordinated debt, net 94,363 94,363 94,363 Junior subordinated debentures, net 19,153 14,528 — 14,528 — December 31, 2020 Financial assets Cash and due from banks $ 415,973 $ 415,973 $ 415,973 $ — $ — Federal funds sold 1,308 1,308 1,308 — — Certificates of deposit investments 2,695 2,695 — 2,695 — Available-for-sale securities 879,240 879,240 — 878,446 794 Held-to-maturity securities 5,016 5,119 — 5,119 — Equity securities 218 218 218 — — Loans held for sale 1,924 1,924 — 1,924 — Loans net of allowance for credit losses 3,094,585 3,056,344 — — 3,056,344 Interest receivable 19,287 19,287 — 19,287 — Federal Reserve Bank stock 9,401 9,401 — 9,401 — Federal Home Loan Bank stock 5,450 5,450 — 5,450 — Financial liabilities Deposits $ 3,692,784 $ 3,697,105 $ — $ 3,215,715 $ 481,390 Securities sold under agreements to repurchase 206,937 206,945 — 206,945 — Interest payable 2,345 2,345 — 2,345 — Federal Home Loan Bank borrowings 93,969 96,669 — 96,669 — Subordinated debt, net 94,253 94,253 — 94,253 — Junior subordinated debentures, net 19,027 14,604 — 14,604 —

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Business Combinations	Note 8 – Business Combinations On September 25, 2020, the Company and Eval Sub Inc., a newly formed Illinois corporation and wholly-owned subsidiary of the Company ("Eval Merger Sub"), entered into an Agreement and Plan of Merger (the "LINCO Merger Agreement") with LINCO Bancshares, Inc., a Missouri corporation ("LINCO"), and the sellers as defined therein, pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of LINCO pursuant to a business combination whereby Eval Merger Sub merged with and into LINCO, whereupon the separate corporate existence of Merger Sub ceased and LINCO continued as the surviving company and a wholly-owned subsidiary of the Company (the "LINCO Merger"). The LINCO Merger closed on February 22, 2021. Subject to the terms and conditions of the LINCO Merger Agreement, at the effective time of the LINCO Merger, each share of common stock, par value $1.00 per share, of LINCO issued and outstanding immediately prior to the effective time of the LINCO Merger (other than shares held in treasury by LINCO) was converted into and become the right to receive, cash or shares of common 38 stock, par value $ 4.00 per share, of the Company and cash in lieu of fractional shares, less any applicable taxes required to be withheld, and subject to certain potential adjustments. On an aggregate basis, the total consideration paid by the Company at the closing of the LINCO Merger was $ 103.5 million in cash and 1,262,246 shares of the Company’s common stock. In addition, immediately prior to the closing of the proposed merger, LINCO paid a special dividend to its shareholders in the aggregate amount of $ 13 million. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805, “Business Combinations ("ASC 805"),” Acquired Fair Value As Recorded by (In thousands) Book Value Adjustments Providence Bank Assets Cash and due from banks $ 130,561 $ — $ 130,561 Investment securities 119,234 264 119,498 Loans 838,377 (9,401 ) 828,976 Allowance for credit losses (8,656 ) 6,583 (2,073 ) Other real estate owned 8,435 915 9,350 Premises and equipment 23,440 6,360 29,800 Goodwill 20,503 (15,054 ) 5,449 Core deposit intangible 123 2,025 2,148 Right of use asset — 794 794 Other assets 43,697 2,499 46,196 Total assets acquired $ 1,175,714 $ (5,015 ) $ 1,170,699 Liabilities Deposits $ 988,329 $ 2,081 $ 990,410 Securities sold under agreements to repurchase — — — FHLB advances 26,941 975 27,916 Other borrowings — — — Lease liability — 794 794 Other liabilities 4,498 (610 ) 3,888 Total liabilities assumed 1,019,768 3,240 1,023,008 Net assets acquired $ 155,946 $ (8,255 ) $ 147,691 Consideration paid Cash $ 103,500 Common stock 44,191 $ 147,691 39 The Company has recognized approximately $9.0 million, pre-tax, of acquisition costs for the LINCO acquisition. Of this amount, $8.5 million was recognized during the first nine months of 2021. These costs are included in salaries and benefits, legal and professional and other expense. Of the $9.4 million adjustment to loans, $11.1 million is being accreted to interest income over the remaining term of the loans. The remaining $1.7 million was the elimination of deferred fees and unearned discounts previously recorded by Providence Bank. The Company also recorded approximately $2 million directly to the allowance for credit losses for loans identified as PCD. Of the $838 million of loans acquired, approximately $64.6 million was identified as PCD. The differences between fair value and acquired value of the assumed time deposits of $2.1 million and the assumed FHLB advances of $975,000, are being amortized to interest expense over the remaining life of the liabilities. The core deposit intangible assets, with a fair value of $2.1 million, are being amortized on an accelerated basis over its estimated life of 10 years. The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the LINCO acquisition taken place at the beginning of the period (dollars in thousands, except per share data): Three months ended September 30, 2021 Three months ended September 30, 2020 Nine months ended September 30, 2021 Nine months ended September 30, 2020 Net interest income $ 45,496 $ 43,717 $ 131,713 $ 127,341 Provision for loan losses 1,103 4,211 12,879 17,379 Non-interest income 16,359 15,439 53,504 48,214 Non-interest expense 36,321 36,100 124,133 113,461 Income before taxes 24,431 18,845 48,205 44,715 Income tax expense (benefit) 6,105 4,753 11,052 10,865 Net income (loss) $ 18,326 $ 14,092 $ 37,153 $ 33,850 Earnings per share Basic $ 1.01 $ 0.78 $ 2.08 $ 1.88 Diluted 1.01 0.78 2.08 1.88 Basic weighted average shares o/s 18,083,126 17,990,437 17,819,619 17,972,731 Diluted weighted average shares o/s 18,136,146 18,037,345 17,872,639 18,019,639

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	Note 9 -- Leases Effective January 1, 2019, the Company adopted ASU 2016-02, Leases (Topic 842). As of September 30, 2021, substantially all the Company's leases are operating leases for real estate property for bank branches, ATM locations, and office space. These leases are generally for periods of 1 to 25 years with various renewal options. The Company elected the optional transition method permitted by Topic 842. Under this method, the Company recognizes and measures leases that exist at the application date and prior comparative periods are not adjusted. In addition, the Company elected the package of practical expedients: 1. An entity need not reassess whether any expired or existing contracts contain leases. 2. An entity need not reassess the lease classification for any expired or existing leases. 3. An entity need not reassess initial direct costs for any existing leases. 40 The Company has also elected the practical expedient, which may be elected separately or in conjunction with the package noted above, to use hindsight in determining the lease term and in assessing the right-of-use assets. This expedient must be applied consistently to all leases. Lastly, the Company has elected to use the practical expedient to include both lease and non-lease components as a single component and account for it as a lease. In addition, the Company has elected to not include short-term leases (i.e. leases with terms of twelve months or less) or equipment leases (primarily copiers) deemed immaterial, on the consolidated balance sheets. For leases in effect at January 1, 2019 and for leases commencing thereafter, the Company recognizes a lease liability and a right-of-use asset, based on the present value of lease payments over the lease term. The discount rate used in determining present value was the Company's incremental borrowing rate which is the FHLB fixed advance rate based on the remaining lease term as of January 1, 2019, or the commencement date for leases subsequently entered into. The following table contains supplemental balance sheet information related to leases (dollars in thousands): September 30, 2021 September 30, 2020 December 31, 2020 Operating lease right-of-use assets $ 16,120 $ 16,703 $ 17,209 Operating lease liabilities 16,315 16,817 17,351 Weighted-average remaining lease term (in years) 6.7 6.5 7.3 Weighted-average discount rate 2.64 % 2.81 % 2.85 % Certain of the Company's leases contain options to renew the lease; however, not all renewal options are included in the calculation of lease liabilities as they are not reasonably certain to be exercised. The Company's leases do not contain residual value guarantees or material variable lease payments. The Company does not have any other material restrictions or covenants imposed by leases that would impact the Company's ability to pay dividends or cause the Company to incur additional financial obligations. Maturities of lease liabilities were as follows (in thousands): Year ending December 31, 2021 $ 720 2022 2,679 2023 2,356 2024 1,945 2025 1,632 Thereafter 9,193 Total lease payments 18,525 Less imputed interest (2,210 ) Total lease liability $ 16,315 The components of lease expense for the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Operating lease cost $ 604 $ 762 $ 2,052 $ 2,207 Short-term lease cost 11 14 96 42 Variable lease cost 373 180 622 376 Total lease cost 988 956 2,770 2,625 Income from subleases (132 ) (185 ) (452 ) (577 ) Net lease cost $ 856 $ 771 $ 2,318 $ 2,048 As the Company elected not to separate lease and non-lease components, the variable lease cost primarily represents variable payment such as common area maintenance and copier expense. The Company does not have any material sub-lease agreements. Cash paid for amounts included in the measurement of lease liabilities was (in thousands): September 30, 2021 September 30, 2020 Operating cash flows from operating leases $ 2,161 $ 2,092

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives	Note 10 – Derivatives The Company utilizes an interest rate swap, designated as a fair value hedge, to mitigate the risk of changing interest rates on the fair value of a fixed rate commercial real estate loan. For derivative instruments that are designed and qualify as a fair value hedge, the 41 gain or loss on the derivative instrument, as well as the offsetting loss or gain in the hedged asset attributable to the hedged risk, is recognized in current earnings. Derivatives Designated as Hedging Instruments The following table provides the outstanding notional balances and fair values of outstanding derivatives designated as hedging instruments as of September 30, 2021 and December 31, 2020 (in thousands): Balance Sheet Location Weighted Average Remaining Maturity (Years) Notional Amount Estimated Value September 30, 2021 Fair value hedges: Interest rate swap agreements Other liabilities 7.6 years $ 14,057 $ (899 ) December 31, 2020 Fair value hedges: Interest rate swap agreements Other liabilities 8.3 years $ 14,334 $ (2,892 ) The effects of the fair value hedges on the Company's income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Three months ended September 30, Nine months ended September 30, Derivative Location of Gain (Loss) on Derivatives 2021 2020 2021 2020 Interest rate swap agreements Interest income on loans $ (38 ) $ 38 $ (629 ) $ (1,218 ) Three months ended September 30, Nine months ended September 30, Derivative Location of Gain (Loss) on Hedged Items 2021 2020 2021 2020 Interest rate swap agreements Interest income on loans $ 38 $ (38 ) $ 629 $ 1,218 As of September 30, 2021, the following amounts were recorded on the consolidated balance sheet related to cumulative basis adjustment for fair value hedges (in thousands): Line Item in the Balance Sheet in Which the Hedge Item is Included Carrying Amount of the Hedged Asset Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset Loans $ 13,192 $ 864 Derivatives Not Designated as Hedging Instruments The following amounts represent the notional amounts and gross fair value of derivative contracts not designated as hedging instruments outstanding during the nine months ended September 30, 2021 (dollars in thousands): September 30, 2021 Balance Sheet Location Weighted Average Remaining Maturity (Years) Notional Amount Estimated Value Interest rate swap agreements Other assets 6.3 $ 41,333 $ 35 Interest rate swap agreements Other liabilities 6.3 41,333 (35 ) 42

Basis of Accounting and Conso_2

Basis of Accounting and Consolidation (Policies)	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Accounting and Consolidation	The unaudited condensed consolidated financial statements include the accounts of First Mid Bancshares, Inc. (“Company”) formerly known as First Mid-Illinois Bancshares, Inc., and its wholly owned subsidiaries: First Mid Bank & Trust, N.A. (“First Wealth The unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X and do not include all of the information required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements and related footnote disclosures although the Company believes that the disclosures made are adequate to make the information not misleading. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s 2020 Annual Report on Form 10-K.
COVID-19	COVID-19 The COVID-19 outbreak is an unprecedented event that provides significant economic uncertainty for a broad spectrum of industries. The Company is focused on supporting its customers, communities and employees during this unique operating environment. Throughout this document, the Company describes the impact COVID-19 is having, actions taken as a result of COVID-19, and certain risks to the Company that COVID-19 creates or exacerbates, as well as management's outlook on the current COVID-19 situation.
Delta Bancshares Company	Delta Bancshares Company On July 28, 2021, the Company and Brock Sub LLC, a newly formed Delaware limited liability company and wholly-owned subsidiary of the Company (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Delta Bancshares Company, a Missouri corporation (“Delta”), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of Delta pursuant to a business combination whereby Delta will merge with and into Merger Sub, whereupon the separate corporate existence of Delta will cease and Merger Sub will continue as the surviving company and a wholly-owned subsidiary of First Mid (the “Merger”). Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger, each share of common stock, par value $10.00 per share, of Delta issued and outstanding immediately prior to the effective time of the Merger (other than shares held in treasury by Delta) will be converted into and become the right to receive cash and shares of common stock, par value $4.00 per share, of the Company and cash in lieu of fractional shares, less any applicable taxes required to be withheld, and subject to certain potential adjustments. On an aggregate basis, the total consideration payable by the Company at the closing of the Merger to Delta’s shareholders and option holders is approximately $15.2 million in cash and 2,282,511 shares of Company common stock. Delta’s outstanding stock options will fully vest upon consummation of the Merger, and all outstanding Delta options that are unexercised prior to the effective time of the Merger will be cashed out. It is anticipated that Delta’s wholly owned bank subsidiary, Jefferson Bank and Trust Company (“Jefferson Bank”), will be merged with and into First Mid Bank at a date following completion of the Merger. At the time of the bank merger, Jefferson Bank’s banking offices will become branches of First Mid Bank. As of September 30, 2021, Jefferson Bank had total consolidated assets of approximately $668 million, loans of approximately, $448 million and total deposits of approximately $511 million. The Merger is anticipated to be completed in the fourth quarter of 2021 and is subject to the approval of the appropriate regulatory authorities and the shareholders of Delta. The shareholders of Delta voted in favor of the Merger on October 28, 2021.
Subordinated Debt Offering	Subordinated Debt Offering On October 6, 2020, the Company issued and sold $96.0 million in aggregate principal amount of its 3.95% Fixed-to-Floating Rate Subordinated Notes due 2030 (the “Notes”). The Notes were issued pursuant to the Indenture, dated as of October 6, 2020 (the “Base Indenture”), between the Company and U.S. Bank National Association, as trustee (the “Trustee”), as supplemented by the First Supplemental Indenture, dated as of October 6, 2020 (the “Supplemental Indenture”), between the Company and the Trustee. The Base Indenture, as amended and supplemented by the Supplemental Indenture, governs the terms of the Notes and provides that the Notes are unsecured, subordinated debt obligations of the Company and will mature on October 15, 2030. From and including the date of issuance to, but excluding October 15, 2025, the Notes will bear interest at an initial rate of 3.95% per annum. From and including October 15, 2025 to, but excluding the maturity date or earlier redemption, the Notes will bear interest at a floating rate equal to three-month Term SOFR plus a spread of 383 basis points, or such other rate as determined pursuant to the Supplemental Indenture, provided that in no event shall the applicable floating interest rate be less than zero per annum. The Company may, beginning with the interest payment date of October 15, 2025, and on any interest payment date thereafter, redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest to but excluding the date of redemption. The Company may also redeem the Notes at any time, including prior to October 15, 2025, at the Company’s option, in whole but not in part, if: (i) a change or prospective change in law occurs that could prevent the Company from deducting interest payable on the Notes for U.S. federal income tax purposes; (ii) a subsequent event occurs that could preclude the Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) the Company is required to register as an investment company under the Investment Company Act of 1940, as amended; in each case, at a redemption price equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest to but excluding the redemption date.
General Litigation	General Litigation The Company is subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management that the disposition or ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, results of operations and cash flows of the Company.
Loan Purchase	2020 Loan Purchase On April 21, 2020, First Mid Bank completed an acquisition of loans in the St. Louis Metro market totaling $183,000,000. There were no loans purchased with deteriorated credit. First Mid Bank also assumed $60,000,000 of related customer deposits 2021 Loan Purchase On September 10, 2021, First Mid Bank completed an acquisition of loans in the St. Louis Metro market totaling $208,000,000. There were no loans purchased with deteriorated credit. First Mid Bank also assumed $215,000,000 of related customer deposits and recorded a core deposit intangible asset of approximately $4,848,000 that is being amortized on an accelerated basis over ten years. 11
Stock Plans	Stock Plans At ten-year Following the stockholders’ approval at the 2021 annual meeting of the Company, a maximum of 399,983 shares of common stock may be issued under the SI Plan. There have been no stock options awarded under 27,750 25,200 2020 2020
Employee Stock Purchase Plan	Employee Stock Purchase Plan At the Annual Meeting of Stockholders held April 25, 2018, the stockholders approved the First Mid-Illinois Bancshares, Inc. Employee A 600,000 ESPP. September 30, 2021 2020 8,439 ESPP.
Captive Insurance Company	Captive Insurance Company First “
Bank Owned Life Insurance	Bank Owned Life Insurance First Mid Bank has purchased life insurance policies on certain senior management. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts that are probable at settlement.
Revenue Recognition	Revenue Recognition Accounting Revenue from Contracts with Customers Trust revenues. The Company generates fee income from providing fiduciary services through its subsidiary, First Mid Wealth Management Company. Fees are billed in arrears based upon the preceding period account balance. Revenue from farm management services is recorded when the service is complete, for example when crops are sold. Brokerage commissions. Revenue is recorded at the beginning of each quarter through billing to customers based on the account asset size on the last day of the previous quarter. If a withdrawal of funds takes place, a prorated refund may occur; this is reflected within the same quarter as the original billing occurred. All performance obligations are met within the same quarter that the revenue is recorded. 12 Insurance commissions. The Company’s insurance agency subsidiary, First Mid Insurance, receives commissions on premiums of new and renewed business policies. First Mid Insurance records commission revenue on direct bill policies as the cash is received. For agency bill policies, First Mid Insurance retains its commission portion of the customer premium payment and remits the balance to the carrier. In both cases, the entire performance obligation is held by the carriers. Service charges on deposits. The Company generates revenue from fees charged for deposit account maintenance, overdrafts, wire transfers, and check fees. The revenue related to deposit fees is recognized at the time the performance obligation is satisfied. ATM/debit card revenue. The Company generates revenue through service charges on the use of its ATM machines and interchange income from the use of Company issued credit and debit cards. The revenue is recognized at the time the service is used and the performance obligation is satisfied. Other income. Treasury management fees and lock box fees are received and recorded after the service performance obligation is completed. Merchant bank card fees are received from various vendors; however, the performance obligation is with the vendors. The Company records gains on the sale of loans and the sale of OREO properties after the transactions are complete and transfer of ownership has occurred. As each of the Company’s facilities is in markets with similar economies, no disaggregation of revenue is necessary.
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The components of accumulated other comprehensive income included in stockholders’ equity as of September 30, 2021 and December 31, 2020 are as follows (in Unrealized Gain (Loss) on Securities September 30, 2021 Net unrealized gains on securities available-for-sale $ 7,934 Tax expense (2,301 ) Balance at September 30, 2021 $ 5,633 December 31, 2020 Net unrealized gains on securities available-for-sale $ 24,077 Tax expense (6,982 ) Balance at December 31, 2020 $ 17,095 Amounts reclassified from accumulated other comprehensive income and the affected line items in the statements of income during the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands): Amounts Reclassified from Other Comprehensive Income Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Affected Line Item in the Statements of Income Realized gains on available-for-sale securities $ 11 $ 95 $ 88 $ 913 Securities gains, net Tax effect (3 ) (28 ) (26 ) (265 ) Income taxes Total reclassifications out of accumulated other comprehensive income $ 8 $ 67 $ 62 $ 648 Net reclassified amount See “Note 3 – Investment Securities” for more detailed information regarding unrealized losses on available-for-sale securities.
Adoption of New Accounting Guidance	Adoption of New Accounting Guidance Accounting Standards Update 2018-13, Fair Value Measurements (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”). In August 2018, FASB issued ASU 2018-13. This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, an entity will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019. As ASU 2018-13 only revises disclosure requirements, it did not have a material impact on the Company’s consolidated financial statements. Accounting Standards Update 2016-13, Financial Instruments - Credit Losses In June 2016, FASB issued ASU 2016-13. The provisions of ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for sale debt securities. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Management formed an internal, cross functional committee in 2017 to evaluate implementation steps and assess the impact ASU 2016-13 would have on the Company’s consolidated financial statements. The committee assigned roles and responsibilities, key tasks to complete, and established a general time-line for implementation. The Company also engaged an The Company adopted ASU 2016-13 using the modified retrospective method for financial assets measured at amortized cost-effective January 1, 2020. Results for the periods beginning after January 1, 2020 are presented under ASU 2016-13 while prior period amounts are reported in accordance with the previously applicable accounting standards. The Company recorded a reduction to retained earnings of approximately $717,000 upon adoption of ASU 2016-13. The transition adjustment included an increase to the allowance for credit losses on loans of $1.7 million and an increase to the allowance for credit losses on off-balance sheet credit exposure of $69,000. There was no allowance for credit losses recorded for held-to- maturity debt securities. The transition adjustment included corresponding increases in deferred tax assets. The Company adopted ASU 2016-13 using the prospective transition approach for financial assets considered purchased credit deteriorated ("PCD") that were previously classified as purchase credit impaired ("PCI") and accounted for under ASC 310-30 effective January 1, 2020. In accordance with the standard, the Company did not reassess whether the PCI assets met the criteria of PCD assets as of the adoption date. The amortized cost of the PCD assets were adjusted to reflect the addition of $833,000 to the allowance for credit losses. The remaining noncredit discount (based on the adjusted amortized cost) will be accreted into interest income at the effective interest rate over the remaining life of the assets. The following table illustrates the impact of ASU 2016-13 adoption (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Assets: Construction and land development $ 1,033 $ 1,146 $ (113 ) Agricultural real estate 1,323 1,093 230 1-4 family residential properties 2,142 1,386 756 Commercial real estate 11,739 11,198 541 Agricultural 1,023 1,386 (363 ) Commercial and industrial 9,428 9,273 155 Consumer 1,895 1,429 466 Allowance for credit losses for all loans $ 28,583 $ 26,911 $ 1,672 Liabilities: Allowance for credit losses on off-balance sheet exposures $ 69 $ — $ 69 14 T he following table illustrates the impact of ASU 2013-13 adoption for PCD assets previously classified as PCI included in the table above (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Construction and land development $ 291 $ — $ 291 1-4 family residential properties 48 6 42 Commercial real estate 818 359 459 Commercial and industrial 41 — 41 Allowance for credit losses for PCD loans $ 1,198 $ 365 $ 833

Basis of Accounting and Conso_3

Basis of Accounting and Consolidation (Tables)	9 Months Ended
	Sep. 30, 2021
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Schedule of Components of Accumulated Other Comprehensive Income	The components of accumulated other comprehensive income included in stockholders’ equity as of September 30, 2021 and December 31, 2020 are as follows (in Unrealized Gain (Loss) on Securities September 30, 2021 Net unrealized gains on securities available-for-sale $ 7,934 Tax expense (2,301 ) Balance at September 30, 2021 $ 5,633 December 31, 2020 Net unrealized gains on securities available-for-sale $ 24,077 Tax expense (6,982 ) Balance at December 31, 2020 $ 17,095
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income	Amounts reclassified from accumulated other comprehensive income and the affected line items in the statements of income during the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands): Amounts Reclassified from Other Comprehensive Income Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Affected Line Item in the Statements of Income Realized gains on available-for-sale securities $ 11 $ 95 $ 88 $ 913 Securities gains, net Tax effect (3 ) (28 ) (26 ) (265 ) Income taxes Total reclassifications out of accumulated other comprehensive income $ 8 $ 67 $ 62 $ 648 Net reclassified amount
ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Schedule of Impact of ASU 2016-13 Adoption	The following table illustrates the impact of ASU 2016-13 adoption (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Assets: Construction and land development $ 1,033 $ 1,146 $ (113 ) Agricultural real estate 1,323 1,093 230 1-4 family residential properties 2,142 1,386 756 Commercial real estate 11,739 11,198 541 Agricultural 1,023 1,386 (363 ) Commercial and industrial 9,428 9,273 155 Consumer 1,895 1,429 466 Allowance for credit losses for all loans $ 28,583 $ 26,911 $ 1,672 Liabilities: Allowance for credit losses on off-balance sheet exposures $ 69 $ — $ 69 T he following table illustrates the impact of ASU 2013-13 adoption for PCD assets previously classified as PCI included in the table above (in thousands): January 1, 2020 As reported Pre-ASU Impact of ASU under ASU 2016-13 2016-13 2016-13 Adoption Adoption Construction and land development $ 291 $ — $ 291 1-4 family residential properties 48 6 42 Commercial real estate 818 359 459 Commercial and industrial 41 — 41 Allowance for credit losses for PCD loans $ 1,198 $ 365 $ 833

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Components of Basic and Diluted Net Income per Common Share	The components of basic and diluted net income per common share available to common stockholders for the three and nine months ended September 30, 2021 and 2020 were as follows: Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Basic net income per common share Available to common stockholders: Net income $ 18,326,000 $ 11,565,000 $ 34,656,000 $ 31,701,000 Weighted average common shares outstanding 18,083,126 16,728,191 17,819,619 16,710,485 Basic earnings per common share $ 1.01 $ 0.69 $ 1.94 $ 1.90 Diluted net income per common share Available to common stockholders: Net income applicable to diluted earnings per share $ 18,326,000 $ 11,565,000 $ 34,656,000 $ 31,701,000 Weighted average common shares outstanding 18,083,126 16,728,191 17,819,619 16,710,485 Dilutive potential common shares: restricted stock awarded 53,020 46,908 53,020 46,908 Diluted weighted average common shares outstanding 18,136,146 16,775,099 17,872,639 16,757,393 Diluted earnings per common share $ 1.01 $ 0.69 $ 1.94 $ 1.89

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Available for Sale and Held for Maturity Securities	The amortized cost, gross unrealized gains and losses and estimated fair values for available-for-sale and held-to-maturity securities by major security type at September 30, 2021 and December 31, 2020 were as follows (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value September 30, 2021 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 194,162 $ 308 $ (2,786 ) $ 191,684 Obligations of states and political subdivisions 328,394 11,310 (960 ) 338,744 Mortgage-backed securities: GSE residential 783,400 6,300 (7,085 ) 782,615 Other securities 33,076 883 (36 ) 33,923 Total available-for-sale $ 1,339,032 $ 18,801 $ (10,867 ) $ 1,346,966 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 5,004 $ 31 $ — $ 5,035 Other securities 2,022 — — 2,022 Total held-to-maturity $ 7,026 $ 31 $ — $ 7,057 December 31, 2020 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 127,067 $ 790 $ (788 ) $ 127,069 Obligations of states and political subdivisions 237,886 11,995 (37 ) 249,844 Mortgage-backed securities: GSE residential 479,470 12,038 (160 ) 491,348 Other securities 10,740 252 (13 ) 10,979 Total available-for-sale $ 855,163 $ 25,075 $ (998 ) $ 879,240 Held-to-maturity: U.S. Treasury securities and obligations of U.S government corporations and agencies $ 5,016 $ 103 $ — $ 5,119
Realized Gains and Losses From Sale of Securities	Realized gains and losses resulting from sales of securities were as follows during the three and nine months ended September 30, 2021 and 2020 (in thousands): Three months September 30, Nine months September 30, 2021 2020 2021 2020 Gross gains $ 11 $ 116 $ 88 $ 934 Gross losses — (21 ) — (21 )
Investments Classified by Contractual Maturity Date	The following table indicates the expected maturities of investment securities classified as available-for-sale presented at fair value, and held-to-maturity presented at amortized cost, at September 30, 2021 and the weighted average yield for each range of maturities (dollars in thousands): One year or less After 1 through 5 years After 5 through 10 years After ten years Total Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 116,855 $ 63,561 $ 11,268 $ — $ 191,684 Obligations of state and political subdivisions 24,335 82,566 224,078 7,765 338,744 Mortgage-backed securities: GSE residential 17,950 410,157 354,508 — 782,615 Other securities 6,055 24,860 3,008 — 33,923 Total available-for-sale investments $ 165,195 $ 581,144 $ 592,862 $ 7,765 $ 1,346,966 Weighted average yield 1.61 % 1.95 % 1.68 % 2.43 % 1.79 % Full tax-equivalent yield 1.78 % 2.10 % 1.94 % 3.16 % 2.00 % Held to maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 5,004 $ — $ — $ — $ 5,004 Other securities — 2,022 2,022 Total held-to-maturity $ 5,004 $ — $ — $ 2,022 $ 7,026 Weighted average yield 2.06 % — % — % — % 2.06 % Full tax-equivalent yield 2.06 % — % — % — % 2.06 %
Fair Value of Investments with Sustained Gross Unrealized Losses	The following table presents the aging of gross unrealized losses and fair value by investment category as of September 30, 2021 and December 31, 2020 (in thousands): Less than 12 months 12 months or more Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses September 30, 2021 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 145,432 $ (2,435 ) $ 9,649 $ (351 ) $ 155,081 $ (2,786 ) Obligations of states and political subdivisions 87,767 (960 ) — — 87,767 (960 ) Mortgage-backed securities: GSE residential 508,332 (7,084 ) 93 (1 ) 508,425 (7,085 ) Other securities 11,057 (36 ) — — 11,057 (36 ) Total $ 752,588 $ (10,515 ) $ 9,742 $ (352 ) $ 762,330 $ (10,867 ) December 31, 2020 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 59,211 $ (788 ) $ — $ — $ 59,211 $ (788 ) Obligations of states and political subdivisions 5,380 (37 ) — — 5,380 (37 ) Mortgage-backed securities: GSE residential 57,609 (160 ) 2,377 — 59,986 (160 ) Other securities 3,977 (13 ) — — 3,977 (13 ) Total $ 126,177 $ (998 ) $ 2,377 $ — $ 128,554 $ (998 )

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Summary of Loans	A summary of loans at September 30, 2021 and December 31, 2020 follows (in thousands): September 30, 2021 December 31, 2020 Construction and land development $ 179,792 $ 122,853 Agricultural real estate 278,432 254,662 1-4 family residential properties 412,320 325,480 Multifamily residential properties 306,966 189,265 Commercial real estate 1,583,583 1,176,290 Loans secured by real estate 2,761,093 2,068,550 Agricultural loans 126,473 137,333 Commercial and industrial loans 839,630 741,819 Consumer loans 80,779 78,023 All other loans 143,724 118,196 Total gross loans 3,951,699 3,143,921 Less: loans held for sale 1,897 1,924 3,949,802 3,141,997 Less: Net deferred loan fees, premiums and discounts 3,930 5,502 Allowance for credit losses 53,983 41,910 Net loans $ 3,891,889 $ 3,094,585
Allowance for Credit Losses Based on Portfolio Segment	22 The following table presents the activity in the allowance for credit losses based on portfolio segment for the three and nine months ended September 30, 2021 (in thousands): Construction and Land Development Agricultural Real Estate 1-4 Family Residential Properties Commercial Real Estate Agricultural Loans Commercial and Industrial Consumer Loans Total Three months ended September 30, 2021 Beginning balance $ 1,795 $ 1,665 $ 2,570 $ 25,664 $ 906 $ 19,842 $ 2,155 $ 54,597 Provision for credit loss expense 314 (408 ) 27 (52 ) (90 ) 342 970 1,103 Loans charged off — — 45 55 — 1,600 376 2,076 Recoveries collected — — 108 23 — 24 204 359 Ending balance $ 2,109 $ 1,257 $ 2,660 $ 25,580 $ 816 $ 18,608 $ 2,953 $ 53,983 Nine months ended September 30, 2021 Beginning balance $ 1,666 $ 1,084 $ 2,322 $ 19,660 $ 1,526 $ 13,485 $ 2,167 $ 41,910 Initial allowance on loans purchased with credit deterioration 261 44 328 646 — 795 — 2,074 Provision for credit loss expense 205 129 117 5,764 (711 ) 5,950 1,225 12,679 Loans charged off 23 — 241 535 — 1,686 1,008 3,493 Recoveries collected — — 134 45 1 64 569 813 Ending balance $ 2,109 $ 1,257 $ 2,660 $ 25,580 $ 816 $ 18,608 $ 2,953 $ 53,983 23 The following tables present the activity in the allowance for credit losses based on portfolio segment for the three and nine months ended September 30, 2020 and for the year ended December 31, 2020 (in thousands): Construction and Land Development Agricultural Real Estate 1-4 Family Residential Properties Commercial Real Estate Agricultural Loans Commercial and Industrial Consumer Loans Total Three months ended September 30, 2020 Beginning balance (prior to adoption of ASC 326) $ 2,358 $ 1,634 $ 2,486 $ 16,272 $ 1,323 $ 12,360 $ 1,948 $ 38,381 Provision for credit loss expense (139 ) 32 (71 ) 2,463 (89 ) 1,352 335 3,883 Loans charged off 13 — 48 — — 368 127 556 Recoveries collected — — 24 73 — 28 82 207 Ending balance $ 2,206 $ 1,666 $ 2,391 $ 18,808 $ 1,234 $ 13,372 $ 2,238 $ 41,915 Nine months ended September 30, 2020 Beginning balance (prior to adoption of ASC 326) $ 1,146 $ 1,093 $ 1,386 $ 11,198 $ 1,386 $ 9,273 $ 1,429 $ 26,911 Impact of adopting ASC 326 (113 ) 230 756 541 (363 ) 155 466 1,672 Provision for credit loss expense 1,186 343 335 7,542 211 5,453 430 15,500 Loans charged off 13 — 313 551 — 1,651 414 2,942 Recoveries collected — — 227 78 — 142 327 774 Ending balance $ 2,206 $ 1,666 $ 2,391 $ 18,808 $ 1,234 $ 13,372 $ 2,238 $ 41,915 Twelve months ended December 31, 2020 Beginning balance (prior to adoption of ASC 326) $ 1,146 $ 1,093 $ 1,386 $ 11,198 $ 1,386 $ 9,273 $ 1,429 $ 26,911 Impact of adopting ASC 326 (113 ) 230 756 541 (363 ) 155 466 1,672 Provision for credit loss expense 646 (239 ) 274 8,581 503 5,869 469 16,103 Loans charged off 13 — 393 829 — 1,991 618 3,844 Recoveries collected — — 299 169 — 179 421 1,068 Ending balance $ 1,666 $ 1,084 $ 2,322 $ 19,660 $ 1,526 $ 13,485 $ 2,167 $ 41,910
Amortized Cost Basis of Collateral-Dependent Loans by Class of Loans Individually Evaluated	24 The following table presents the amortized cost basis of collateral-dependent loans by class of loans that were individually evaluated to determine expected credit losses, and the related allowance for credit losses, as of September 30, 2021 (in thousands): Collateral Allowance Real Estate Business Assets Other Total for Credit Losses Construction and land development $ 1,407 $ — $ — $ 1,407 $ 233 1-4 family residential properties 5,438 — — 5,438 245 Multifamily residential properties 1,805 — — 1,805 — Commercial real estate 10,830 — — 10,830 864 Loans secured by real estate 19,480 — — 19,480 1,342 Commercial and industrial loans — 2,146 1,067 3,213 1,190 Consumer loans — — 10 10 — Other loans — 24 — 24 — Total loans $ 19,480 $ 2,170 $ 1,077 $ 22,727 $ 2,532
Credit Risk Profile of Loan Portfolio on Amortized Cost Basis Based on Risk Rating Category	25 The following tables present the credit risk profile of the Company’s loan portfolio on amortized cost basis based on risk rating category and year of origination as of September 30, 2021 (in thousands): Term Loans by Origination Year Revolving Risk rating 2021 2020 2019 2018 2017 Prior Loans Total September 30, 2021 Construction and land development loans Pass $ 33,540 $ 68,429 $ 26,623 $ 34,739 $ 3,841 $ 11,328 $ — $ 178,500 Special mention 112 — — — — — — 112 Substandard — — — 915 — 534 — 1,449 Total $ 33,652 $ 68,429 $ 26,623 $ 35,654 $ 3,841 $ 11,862 $ — $ 180,061 Agricultural real estate loans Pass $ 62,342 $ 65,820 $ 30,303 $ 36,823 $ 13,095 $ 57,580 $ — $ 265,963 Special mention 825 259 4,184 417 388 6,010 — 12,083 Substandard — — 265 189 57 231 — 742 Total $ 63,167 $ 66,079 $ 34,752 $ 37,429 $ 13,540 $ 63,821 $ — $ 278,788 1-4 family residential property loans Pass $ 73,424 $ 101,161 $ 36,828 $ 48,656 $ 33,013 $ 52,995 $ 42,664 $ 388,741 Special mention 80 149 1,952 505 2,628 1,054 56 6,424 Substandard 178 570 1,556 1,688 3,662 8,758 988 17,400 Total $ 73,682 $ 101,880 $ 40,336 $ 50,849 $ 39,303 $ 62,807 $ 43,708 $ 412,565 Commercial real estate loans Pass $ 357,285 $ 445,335 $ 310,825 $ 180,042 $ 161,629 $ 376,631 $ — $ 1,831,747 Special mention 3,369 886 1,198 1,418 10,726 15,251 — 32,848 Substandard 2,380 736 6,525 1,811 4,716 9,403 — 25,571 Total $ 363,034 $ 446,957 $ 318,548 $ 183,271 $ 177,071 $ 401,285 $ — $ 1,890,166 Agricultural loans Pass $ 75,148 $ 19,930 $ 5,582 $ 3,653 $ 1,074 $ 1,480 $ — $ 106,867 Special mention 15,568 436 2,957 155 160 65 — 19,341 Substandard 27 18 — — — 281 — 326 Total $ 90,743 $ 20,384 $ 8,539 $ 3,808 $ 1,234 $ 1,826 $ — $ 126,534 Commercial and industrial loans Pass $ 152,729 $ 184,801 $ 166,553 $ 77,324 $ 3,402 $ 384,318 $ — $ 969,127 Special mention 844 542 1,725 568 416 1,155 — 5,250 Substandard 428 711 448 1,588 71 1,968 — 5,214 Total $ 154,001 $ 186,054 $ 168,726 $ 79,480 $ 3,889 $ 387,441 $ — $ 979,591 Consumer loans Pass $ 20,854 $ 21,547 $ 27,317 $ 6,633 $ 2,640 $ 492 $ — $ 79,483 Special mention 21 78 55 10 — — — 164 Substandard 98 17 75 51 30 146 — 417 Total $ 20,973 $ 21,642 $ 27,447 $ 6,694 $ 2,670 $ 638 $ — $ 80,064 Total loans Pass $ 775,322 $ 907,023 $ 604,031 $ 387,870 $ 218,694 $ 884,824 $ 42,664 $ 3,820,428 Special mention 20,819 2,350 12,071 3,073 14,318 23,535 56 76,222 Substandard 3,111 2,052 8,869 6,242 8,536 21,321 988 51,119 Total $ 799,252 $ 911,425 $ 624,971 $ 397,185 $ 241,548 $ 929,680 $ 43,708 $ 3,947,769 26 The following tables present the credit risk profile of the Company’s loan portfolio based on risk rating category as of December 31, 2020 (in thousands): Term Loans by Origination Year Revolving Risk rating 2020 2019 2018 2017 2016 Prior Loans Total December 31, 2020 Construction and land development loans Pass $ 41,842 $ 40,989 $ 31,500 $ 2,760 $ 871 $ 3,822 $ — $ 121,784 Special mention — — — — — — — — Substandard — 128 — 517 — 50 — 695 Total $ 41,842 $ 41,117 $ 31,500 $ 3,277 $ 871 $ 3,872 $ — $ 122,479 Agricultural real estate loans Pass $ 73,630 $ 34,412 $ 37,839 $ 16,138 $ 13,559 $ 58,291 $ — $ 233,869 Special mention 1,845 3,970 533 469 1,106 11,232 — 19,155 Substandard — — 800 208 64 245 — 1,317 Total $ 75,475 $ 38,382 $ 39,172 $ 16,815 $ 14,729 $ 69,768 $ — $ 254,341 1-4 family residential property loans Pass $ 81,366 $ 29,695 $ 38,163 $ 23,086 $ 26,676 $ 62,942 $ 40,363 $ 302,291 Special mention 192 2,142 523 2,720 247 1,578 293 7,695 Substandard 296 695 1,915 1,859 1,996 7,516 1,499 15,776 Total $ 81,854 $ 32,532 $ 40,601 $ 27,665 $ 28,919 $ 72,036 $ 42,155 $ 325,762 Commercial real estate loans Pass $ 368,750 $ 237,119 $ 171,591 $ 148,283 $ 143,400 $ 215,616 $ — $ 1,284,759 Special mention 2,469 1,300 6,108 11,262 6,741 16,947 — 44,827 Substandard 1,863 40 7,081 2,022 4,905 18,435 — 34,346 Total $ 373,082 $ 238,459 $ 184,780 $ 161,567 $ 155,046 $ 250,998 $ — $ 1,363,932 Agricultural loans Pass $ 83,377 $ 15,680 $ 5,978 $ 1,838 $ 635 $ 2,856 $ — $ 110,364 Special mention 21,070 4,483 694 224 148 38 — 26,657 Substandard 68 238 25 — — — — 331 Total $ 104,515 $ 20,401 $ 6,697 $ 2,062 $ 783 $ 2,894 $ — $ 137,352 Commercial and industrial loans Pass $ 371,683 $ 132,148 $ 70,497 $ 78,890 $ 42,439 $ 114,904 $ — $ 810,561 Special mention 4,116 32,130 849 489 1,101 730 — 39,415 Substandard 889 2,360 532 1,689 136 969 — 6,575 Total $ 376,688 $ 166,638 $ 71,878 $ 81,068 $ 43,676 $ 116,603 $ — $ 856,551 Consumer loans Pass $ 31,609 $ 21,384 $ 12,084 $ 8,279 $ 3,150 $ 1,022 $ — $ 77,528 Special mention — 24 24 1 1 — — 50 Substandard 15 16 111 95 67 120 — 424 Total $ 31,624 $ 21,424 $ 12,219 $ 8,375 $ 3,218 $ 1,142 $ — $ 78,002 Total loans Pass $ 1,052,257 $ 511,427 $ 367,652 $ 279,274 $ 230,730 $ 459,453 $ 40,363 $ 2,941,156 Special mention 29,692 44,049 8,731 15,165 9,344 30,525 293 137,799 Substandard 3,131 3,477 10,464 6,390 7,168 27,335 1,499 59,464 Total $ 1,085,080 $ 558,953 $ 386,847 $ 300,829 $ 247,242 $ 517,313 $ 42,155 $ 3,138,419 27
Loan Portfolio Aging Analysis	The following table presents the Company’s loan portfolio aging analysis at September 30, 2021 and December 31, 2020 (in thousands): 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Total Loans > 90 Days and Accruing September 30, 2021 Construction and land development $ 458 $ 9 $ 642 $ 1,109 $ 178,952 $ 180,061 $ — Agricultural real estate 23 — 94 117 278,671 278,788 — 1-4 family residential properties 2,205 865 4,313 7,383 405,182 412,565 — Multifamily residential properties — 35 544 579 306,332 306,911 — Commercial real estate 1,920 1,154 3,354 6,428 1,576,827 1,583,255 — Loans secured by real estate 4,606 2,063 8,947 15,616 2,745,964 2,761,580 — Agricultural loans 735 152 588 1,475 125,059 126,534 — Commercial and industrial loans 550 726 2,367 3,643 832,217 835,860 — Consumer loans 387 122 136 645 79,419 80,064 — All other loans — — — — 143,731 143,731 — Total loans $ 6,278 $ 3,063 $ 12,038 $ 21,379 $ 3,926,390 $ 3,947,769 $ — December 31, 2020 Construction and land development $ — $ — $ 128 $ 128 $ 122,351 $ 122,479 $ — Agricultural real estate 1,198 34 — 1,232 253,109 254,341 — 1-4 family residential properties 1,121 1,105 2,033 4,259 321,503 325,762 — Multifamily residential properties — — — — 189,632 189,632 — Commercial real estate 2,618 341 794 3,753 1,170,547 1,174,300 — Loans secured by real estate 4,937 1,480 2,955 9,372 2,057,142 2,066,514 — Agricultural loans 43 — 236 279 137,073 137,352 — Commercial and industrial loans 2,426 8 1,420 3,854 734,459 738,313 — Consumer loans 145 50 149 344 77,658 78,002 — All other loans — — — — 118,238 118,238 — Total loans $ 7,551 $ 1,538 $ 4,760 $ 13,849 $ 3,124,570 $ 3,138,419 $ —
Amortized Cost Basis of Loans on Nonaccrual Status and Nonaccrual Loans Individually Evaluated	The following table presents the amortized cost basis of loans on nonaccrual status and of nonaccrual loans individually evaluated for which no allowance was recorded as of September 30, 2021 and December 31, 2020 (in thousands). There were no loans past due over eighty-nine days that were still accruing. September 30, 2021 December 31, 2020 Nonaccrual with no Allowance for Total Nonaccrual with no Allowance for Total Credit Loss Nonaccrual Credit Loss Nonaccrual Construction and land development $ 943 $ 943 $ 162 $ 162 Agricultural real estate 338 338 359 359 1-4 family residential properties 7,179 7,232 6,747 6,930 Multifamily residential properties 2,047 2,047 2,181 2,181 Commercial real estate 8,141 8,525 7,345 8,760 Loans secured by real estate 18,648 19,085 16,794 18,392 Agricultural loans 236 236 659 659 Commercial and industrial loans 1,886 3,891 3,677 4,372 Consumer loans 233 233 327 327 All other loans — — — — Total loans $ 21,003 $ 23,445 $ 21,457 $ 23,750
Recorded Balance of Troubled Debt Restructurings	The following table presents the Company’s recorded balance of troubled debt restructurings at September 30, 2021 and December 31, 2020 (in thousands). Troubled debt restructurings: September 30, 2021 December 31, 2020 Construction and land development $ 492 $ — Agricultural real estate 250 — 1-4 family residential properties 1,507 1,603 Commercial real estate 3,873 5,170 Loans secured by real estate 6,122 6,773 Agricultural loans 384 228 Commercial and industrial loans 1,059 2,389 Consumer loans 118 112 All other loans 24 — Total $ 7,707 $ 9,502 Performing troubled debt restructurings: Agricultural real estate $ 250 $ — 1-4 family residential properties 887 1,268 Commercial real estate 2,572 3,045 Loans secured by real estate 3,709 4,313 Agricultural loans 156 — Commercial and industrial loans 335 58 Consumer loans 54 2 All other loans 24 — Total $ 4,278 $ 4,373
Loans Modified as Troubled Debt Restructurings During Period	The following table presents loans modified as TDRs during the nine months ended September 30, 2021, as a result of various modified loan factors (in thousands). The change in the recorded investment from pre-modification to post- modification was not material. September 30, 2021 September 30, 2020 Number of Recorded Type of Number of Recorded Type of Modifications Investment Modifications Modifications Investment Modifications Construction and land development 1 $ 492 (c) — $ — Agricultural real estate 1 250 (b) — — 1-4 family residential properties 2 323 (b)(c) — — Commercial real estate 1 681 (b) 1 296 (b) Loans secured by real estate 5 1,746 1 296 Agricultural loans 1 156 (b) 2 88 (b)(c) Commercial and industrial loans 6 287 (b) 4 2,328 (b) Consumer loans 4 54 (b) 1 11 (b) Other Loans 1 24 (b) — — Total 17 $ 2,267 8 $ 2,723 Type of modifications: (a) Reduction of stated interest rate of loan (b) Change in payment terms (c) Extension of maturity date (d) Permanent reduction of the recorded investment 30
Summary of Purchased Credit Deteriorated (PCD) Loans	The Company has acquired loans, for which there was, at acquisition, evidence of more than insignificant deterioration of credit quality since origination. The carrying amount of those loans is as follows (in thousands): LINCO Acquisition Purchase price of purchase credit deteriorated loans at acquisition $ 64,647 Allowance for credit losses at acquisition (2,074 ) Non-credit discount/(premium) at acquisition (187 ) Fair value of purchased credit deteriorated loans at acquisition $ 62,386

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Schedule of Intangible Assets and Goodwill	The following table presents gross carrying value and accumulated amortization by major intangible asset class as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Goodwill not subject to amortization (effective 1/1/02) $ 115,613 $ 3,760 $ 108,752 $ 3,760 Intangibles from branch acquisition 3,015 3,015 3,015 3,015 Core deposit intangibles 39,344 23,181 32,355 20,910 Other intangibles 20,561 6,376 16,389 5,222 $ 178,533 $ 36,332 $ 160,511 $ 32,907
Intangible Assets Mortgage Servicing Rights	The Company has mortgage servicing rights acquired in previous acquisitions. The following table summarizes the activity pertaining to mortgage servicing rights included in intangible assets as of September 30, 2021, September 30, 2020 and December 31, 2020 (in thousands): September 30, 2021 September 30, 2020 December 31, 2020 Beginning balance $ 516 $ 1,444 $ 1,444 Fair market value adjustment 474 (328 ) (273 ) Mortgage servicing rights amortized (528 ) (415 ) (593 ) Interest only strip (7 ) (40 ) (62 ) Ending balance $ 455 $ 661 $ 516
Schedule of Intangible Assets Amortization Expense	Total amortization expense for the three and nine months ended September 30, 2021 and 2020 was as follows (in thousands): Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Core deposit intangibles $ 809 $ 804 $ 2,247 $ 2,468 Customer list intangibles 432 326 1,154 979 Mortgage servicing rights 173 147 528 415 $ 1,414 $ 1,277 $ 3,929 $ 3,862
Schedule of Expected Amortization Expense	Aggregate amortization expense for the current year and estimated amortization expense for each of the five succeeding years is shown in the table below (in thousands): Aggregate amortization expense: For period 01/01/21-9/30/21 $ 3,929 Estimated amortization expense: For period 10/01/21-12/31/21 2,729 For year ended 12/31/22 5,119 For year ended 12/31/23 4,680 For year ended 12/31/24 4,292 For year ended 12/31/25 3,861 For year ended 12/31/26 3,091
LINCO Bancshares, Inc.
Schedule of Reconciliation of Purchase Price Paid for Acquisition and Goodwill Recorded	31 The following table provides a reconciliation of the purchase price paid for the acquisition of LINCO and the amount of goodwill recorded (in thousands): Unallocated purchase price $ 12,248 Less purchase accounting adjustments: Fair value of securities $ 264 Fair value of loans, net (2,818 ) Fair value of other real estate owned 915 Fair value of premises and equipment 6,360 Fair value of time deposits (2,081 ) Fair value of FHLB advances (975 ) Core deposit intangible 2,025 Other assets 3,293 Other liabilities (184 ) 6,799 $ 5,449

Repurchase Agreements and Oth_2

Repurchase Agreements and Other Borrowings (Tables)	9 Months Ended
	Sep. 30, 2021
Repurchase Agreements And Other Borrowings [Abstract]
Schedule of Securities Financing Transactions	Collateral pledged by class for repurchase agreements are as follows (in thousands): September 30, 2021 December 31, 2020 US Treasury securities and obligations of U.S. government corporations and agencies $ 56,324 $ 37,423 Mortgage-backed securities: GSE: residential 93,567 168,480 Miscellaneous — 1,034 Total $ 149,891 $ 206,937
Federal Home Loan Bank, Advances	FHLB borrowings, before net premiums of $700,000, were $111.9 million and $94 million at September 30, 2021 and December 31, 2020, respectively. At September 30, 2021 the advances were as follows: Advance Term (in years) Interest Rate Maturity Date $ 5,000,000 7.0 2.55% October 1, 2021 5,000,000 5.0 2.71% March 21, 2022 5,000,000 1.0 0.00% May 31, 2022 5,000,000 3.0 2.41% May 31, 2022 5,000,000 3.0 2.12% June 7, 2022 5,000,000 3.0 2.12% June 7, 2022 5,000,000 8.0 2.40% January 9, 2023 5,000,000 4.0 2.44% May 30, 2023 5,000,000 3.5 1.51% July 31, 2023 5,000,000 3.5 0.77% September 11, 2023 10,000,000 5.0 1.45% December 31, 2024 5,000,000 5.0 0.91% March 10, 2025 6,940,511 10.0 2.64% December 23, 2025 5,000,000 10.0 1.14% October 3, 2029 5,000,000 10.0 1.15% October 3, 2029 5,000,000 10.0 1.12% October 3, 2029 10,000,000 10.0 1.39% December 31, 2029 15,000,000 10.0 1.41% December 31, 2029

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on Recurring Basis	34 The following table presents the Company’s assets and liabilities that are measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall as of September 30, 2021 and December 31, 2020 (in thousands): Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 191,684 $ — $ 191,684 $ — Obligations of states and political subdivisions 338,744 — 338,128 616 Mortgage-backed securities 782,615 — 782,615 — Other securities 33,923 — 33,923 — Total available-for-sale securities 1,346,966 — 1,346,350 616 Equity securities 348 348 — — Derivative assets: interest rate swaps 35 — 35 — Total assets $ 1,347,349 $ 348 $ 1,346,385 $ 616 Derivative liabilities: interest rate swaps $ 899 $ — $ 899 $ — December 31, 2020 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 127,069 $ — $ 127,069 $ — Obligations of states and political subdivisions 249,844 — 249,050 794 Mortgage-backed securities 491,348 — 491,348 — Other securities 10,979 — 10,979 — Total available-for-sale securities 879,240 — 878,446 794 Equity securities 218 218 193 — Derivative assets: interest rate swaps 1,399 — 1,399 — Total assets $ 880,857 $ 218 $ 880,038 $ 794 Derivative liabilities: interest rate swaps $ 2,892 $ — $ 2,892 $ —
Fair Value of Assets Measured on a Recurring Basis Using Significant Unobservable Inputs	The change in fair value of assets measured on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2021 and 2020 is summarized as follows (in thousands): Obligation of State and Political Subdivisions Three months ended Nine months ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Beginning balance $ 615 $ 792 $ 794 $ 973 Transfers into Level 3 — — — — Transfers out of Level 3 — — — — Total gains or losses: Included in net income 1 1 3 4 Included in other comprehensive income (loss) — — — — Purchases, issuances, sales and settlements: Purchases — — — — Issuances — — — — Sales — — — — Settlements — — (181 ) (184 ) Ending balance $ 616 $ 793 $ 616 $ 793 Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date $ — $ — $ — $ —
Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents the fair value measurement of assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2021 and December 31, 2020 (in thousands): Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Fair Value (Level 1) (Level 2) (Level 3) September 30, 2021 Collateral dependent loans $ 13,682 $ — $ — $ 13,682 Foreclosed assets held for sale 1,720 — — 1,720 Mortgage servicing rights 455 — — 455 December 31, 2020 Collateral dependent loans $ 14,876 $ — $ — $ 14,876 Foreclosed assets held for sale 290 — — 290 Mortgage servicing rights 516 — — 517
Significant Unobservable Inputs Used in Valuation of Level 3 Fair Value Measurements	The following table presents quantitative information about unobservable inputs used in Level 3 fair value measurements other than goodwill at September 30, 2021. September 30, 2021 Fair Value Valuation Technique Unobservable Inputs Range Weighted Average Collateral dependent loans $ 13,682 Third party valuations Discount to reflect realizable value 0% - 40% 20% Foreclosed assets held for sale 1,720 Third party valuations Discount to reflect realizable value less estimated selling costs 0% - 40% 35% Mortgage servicing rights 455 Third party valuations PSA standard prepayment model rate 230 - 438 281 December 31, 2020 Fair Value Valuation Technique Unobservable Inputs Range Weighted Average Collateral dependent loans $ 14,876 Third party valuations Discount to reflect realizable value 0% - 40% 20% Foreclosed assets held for sale 290 Third party valuations Discount to reflect realizable value less estimated selling costs 0% - 40% 35% Mortgage servicing rights 517 Third party valuations PSA standard prepayment model rate 242 - 441 384
Summary of Estimated Fair Values of Company Financial Instruments	The following tables present estimated fair values of the Company’s financial instruments at September 30, 2021 and December 31, 2020 in accordance with ASC 825 (in thousands): Carrying Amount Fair Value Level 1 Level 2 Level 3 September 30, 2021 Financial assets Cash and due from banks $ 343,859 $ 343,859 $ 343,859 $ — $ — Federal funds sold 1,347 1,347 1,347 — — Certificates of deposit investments 2,695 2,695 — 2,695 — Available-for-sale securities 1,346,966 1,346,966 — 1,346,351 615 Held-to-maturity securities 7,026 7,057 2,022 5,035 — Equity securities 348 348 348 — — Loans held for sale 1,897 1,897 — 1,897 — Loans net of allowance for credit losses 3,891,889 3,830,149 — — 3,830,149 Interest receivable 22,057 22,057 — 22,057 — Federal Reserve Bank stock 13,845 13,845 — 13,845 — Federal Home Loan Bank stock 6,528 6,528 — 6,528 — Financial liabilities Deposits $ 4,988,562 $ 4,991,225 $ — $ 4,347,567 $ 643,658 Securities sold under agreements to repurchase 149,891 149,896 — 149,896 — Interest payable 2,569 2,569 — 2,569 — Federal Home Loan Bank borrowings 112,641 113,205 — 113,205 — Subordinated debt, net 94,363 94,363 94,363 Junior subordinated debentures, net 19,153 14,528 — 14,528 — December 31, 2020 Financial assets Cash and due from banks $ 415,973 $ 415,973 $ 415,973 $ — $ — Federal funds sold 1,308 1,308 1,308 — — Certificates of deposit investments 2,695 2,695 — 2,695 — Available-for-sale securities 879,240 879,240 — 878,446 794 Held-to-maturity securities 5,016 5,119 — 5,119 — Equity securities 218 218 218 — — Loans held for sale 1,924 1,924 — 1,924 — Loans net of allowance for credit losses 3,094,585 3,056,344 — — 3,056,344 Interest receivable 19,287 19,287 — 19,287 — Federal Reserve Bank stock 9,401 9,401 — 9,401 — Federal Home Loan Bank stock 5,450 5,450 — 5,450 — Financial liabilities Deposits $ 3,692,784 $ 3,697,105 $ — $ 3,215,715 $ 481,390 Securities sold under agreements to repurchase 206,937 206,945 — 206,945 — Interest payable 2,345 2,345 — 2,345 — Federal Home Loan Bank borrowings 93,969 96,669 — 96,669 — Subordinated debt, net 94,253 94,253 — 94,253 — Junior subordinated debentures, net 19,027 14,604 — 14,604 —

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Estimated Fair Values of Assets Acquired and Liabilities Assumed	Acquired Fair Value As Recorded by (In thousands) Book Value Adjustments Providence Bank Assets Cash and due from banks $ 130,561 $ — $ 130,561 Investment securities 119,234 264 119,498 Loans 838,377 (9,401 ) 828,976 Allowance for credit losses (8,656 ) 6,583 (2,073 ) Other real estate owned 8,435 915 9,350 Premises and equipment 23,440 6,360 29,800 Goodwill 20,503 (15,054 ) 5,449 Core deposit intangible 123 2,025 2,148 Right of use asset — 794 794 Other assets 43,697 2,499 46,196 Total assets acquired $ 1,175,714 $ (5,015 ) $ 1,170,699 Liabilities Deposits $ 988,329 $ 2,081 $ 990,410 Securities sold under agreements to repurchase — — — FHLB advances 26,941 975 27,916 Other borrowings — — — Lease liability — 794 794 Other liabilities 4,498 (610 ) 3,888 Total liabilities assumed 1,019,768 3,240 1,023,008 Net assets acquired $ 155,946 $ (8,255 ) $ 147,691 Consideration paid Cash $ 103,500 Common stock 44,191 $ 147,691 39
Unaudited Pro Forma Condensed Combined Financial Information	The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the LINCO acquisition taken place at the beginning of the period (dollars in thousands, except per share data): Three months ended September 30, 2021 Three months ended September 30, 2020 Nine months ended September 30, 2021 Nine months ended September 30, 2020 Net interest income $ 45,496 $ 43,717 $ 131,713 $ 127,341 Provision for loan losses 1,103 4,211 12,879 17,379 Non-interest income 16,359 15,439 53,504 48,214 Non-interest expense 36,321 36,100 124,133 113,461 Income before taxes 24,431 18,845 48,205 44,715 Income tax expense (benefit) 6,105 4,753 11,052 10,865 Net income (loss) $ 18,326 $ 14,092 $ 37,153 $ 33,850 Earnings per share Basic $ 1.01 $ 0.78 $ 2.08 $ 1.88 Diluted 1.01 0.78 2.08 1.88 Basic weighted average shares o/s 18,083,126 17,990,437 17,819,619 17,972,731 Diluted weighted average shares o/s 18,136,146 18,037,345 17,872,639 18,019,639

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Summary of Supplemental Balance Sheet Information	The following table contains supplemental balance sheet information related to leases (dollars in thousands): September 30, 2021 September 30, 2020 December 31, 2020 Operating lease right-of-use assets $ 16,120 $ 16,703 $ 17,209 Operating lease liabilities 16,315 16,817 17,351 Weighted-average remaining lease term (in years) 6.7 6.5 7.3 Weighted-average discount rate 2.64 % 2.81 % 2.85 %
Summary of Maturities of Lease Liabilities	Maturities of lease liabilities were as follows (in thousands): Year ending December 31, 2021 $ 720 2022 2,679 2023 2,356 2024 1,945 2025 1,632 Thereafter 9,193 Total lease payments 18,525 Less imputed interest (2,210 ) Total lease liability $ 16,315
Summary of Components of Lease Expense	The components of lease expense for the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Three months ended September 30, Nine months ended September 30, 2021 2020 2021 2020 Operating lease cost $ 604 $ 762 $ 2,052 $ 2,207 Short-term lease cost 11 14 96 42 Variable lease cost 373 180 622 376 Total lease cost 988 956 2,770 2,625 Income from subleases (132 ) (185 ) (452 ) (577 ) Net lease cost $ 856 $ 771 $ 2,318 $ 2,048
Summary of Operating Lease Cash Flows	Cash paid for amounts included in the measurement of lease liabilities was (in thousands): September 30, 2021 September 30, 2020 Operating cash flows from operating leases $ 2,161 $ 2,092

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative [Line Items]
Summary of Derivative Instruments, Gain (Loss)	The effects of the fair value hedges on the Company's income statement during the three and nine months ended September 30, 2021 and 2020 were as follows (in thousands): Three months ended September 30, Nine months ended September 30, Derivative Location of Gain (Loss) on Derivatives 2021 2020 2021 2020 Interest rate swap agreements Interest income on loans $ (38 ) $ 38 $ (629 ) $ (1,218 ) Three months ended September 30, Nine months ended September 30, Derivative Location of Gain (Loss) on Hedged Items 2021 2020 2021 2020 Interest rate swap agreements Interest income on loans $ 38 $ (38 ) $ 629 $ 1,218
Summary of Cumulative Basis Adjustment of Fair Value Hedges	As of September 30, 2021, the following amounts were recorded on the consolidated balance sheet related to cumulative basis adjustment for fair value hedges (in thousands): Line Item in the Balance Sheet in Which the Hedge Item is Included Carrying Amount of the Hedged Asset Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset Loans $ 13,192 $ 864
Not Designated as Hedging Instrument
Derivative [Line Items]
Summary of Fair Value Derivative Instruments	The following amounts represent the notional amounts and gross fair value of derivative contracts not designated as hedging instruments outstanding during the nine months ended September 30, 2021 (dollars in thousands): September 30, 2021 Balance Sheet Location Weighted Average Remaining Maturity (Years) Notional Amount Estimated Value Interest rate swap agreements Other assets 6.3 $ 41,333 $ 35 Interest rate swap agreements Other liabilities 6.3 41,333 (35 )
Fair Value Hedging | Designated As Hedging Instrument
Derivative [Line Items]
Summary of Fair Value Derivative Instruments	The following table provides the outstanding notional balances and fair values of outstanding derivatives designated as hedging instruments as of September 30, 2021 and December 31, 2020 (in thousands): Balance Sheet Location Weighted Average Remaining Maturity (Years) Notional Amount Estimated Value September 30, 2021 Fair value hedges: Interest rate swap agreements Other liabilities 7.6 years $ 14,057 $ (899 ) December 31, 2020 Fair value hedges: Interest rate swap agreements Other liabilities 8.3 years $ 14,334 $ (2,892 )

Basis of Accounting and Conso_4

Basis of Accounting and Consolidation - Additional Information (Details) - USD ($)	Sep. 10, 2021	Jul. 28, 2021	Oct. 06, 2020	Jan. 01, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Apr. 21, 2020	Dec. 31, 2019
Basis Of Accounting And Consolidation [Line Items]
Common stock, par value (in dollars per share)					$ 4		$ 4		$ 4
Assets					$ 6,043,359,000		$ 6,043,359,000		$ 4,726,348,000
Loans					3,891,889,000		3,891,889,000		3,094,585,000
Deposits	$ 215,000,000				$ 4,988,562,000		$ 4,988,562,000		3,692,784,000			$ 60,000,000
Loans acquired	208,000,000											$ 183,000,000
Core deposit intangible asset	$ 4,848,000
Amortization period	10 years
Stock plans, term							10 years
Maximum number of shares to be issued in stock incentive plan (in shares)					399,983		399,983
Employee discount for employee stock purchase plan							5.00%
Employee stock purchase plan, number of shares authorized					600,000		600,000
Stock issued during period, shares, employee stock purchase plans					2,700	3,494	8,439	11,037
Captive maximum gross premiums							$ 2,300,000
Cumulative change in accounting principal					$ 627,225,000	$ 561,009,000	627,225,000	$ 561,009,000	568,228,000	$ 616,066,000	$ 549,273,000		$ 526,609,000
Allowance for credit losses on loans					53,983,000	$ 41,915,000	$ 53,983,000	$ 41,915,000	$ 41,910,000	$ 54,597,000	$ 38,381,000		26,911,000
ASU 2016-13
Basis Of Accounting And Consolidation [Line Items]
Allowance for credit losses on loans				$ 28,583,000
Off-balance sheet, credit loss, liability				69,000
Allowance for credit losses, held-to-maturity debt securities				0
Amortized cost of PCD assets reflected the addition to allowance for credit losses				833,000
ASU 2016-13 | Impact of ASU
Basis Of Accounting And Consolidation [Line Items]
Allowance for credit losses on loans				1,672,000
Off-balance sheet, credit loss, liability				69,000
Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-13
Basis Of Accounting And Consolidation [Line Items]
Cumulative change in accounting principal				$ 717,000									(717,000)
Allowance for credit losses on loans													$ 1,672,000
Stock Options
Basis Of Accounting And Consolidation [Line Items]
Common stock awarded in SI plan (in shares)							0
Restricted Stock
Basis Of Accounting And Consolidation [Line Items]
Common stock awarded in SI plan (in shares)							27,750		25,200
Restricted Stock Units (RSUs)
Basis Of Accounting And Consolidation [Line Items]
Common stock awarded in SI plan (in shares)							35,400		16,950
3.95% Subordinated Notes due 2030
Basis Of Accounting And Consolidation [Line Items]
Aggregate principal amount			$ 96,000,000
Fixed-to-Floating Rate			3.95%
Maturity date			Oct. 15, 2030
Redemption description			The Company may, beginning with the interest payment date of October 15, 2025, and on any interest payment date thereafter, redeem the Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the Notes to be redeemed plus accrued and unpaid interest to but excluding the date of redemption. The Company may also redeem the Notes at any time, including prior to October 15, 2025, at the Company’s option, in whole but not in part, if: (i) a change or prospective change in law occurs that could prevent the Company from deducting interest payable on the Notes for U.S. federal income tax purposes; (ii) a subsequent event occurs that could preclude the Notes from being recognized as Tier 2 capital for regulatory capital purposes; or (iii) the Company is required to register as an investment company under the Investment Company Act of 1940, as amended; in each case, at a redemption price equal to 100% of the principal amount of the Notes plus any accrued and unpaid interest to but excluding the redemption date.
3.95% Subordinated Notes due 2030 | SOFR
Basis Of Accounting And Consolidation [Line Items]
Description floating rate basis			three-month Term SOFR
Basis points			3.83%
Delta Bancshares Company
Basis Of Accounting And Consolidation [Line Items]
Percentage of issued and outstanding shares acquired		100.00%
Common stock, par value (in dollars per share)		$ 10
Share Price		$ 4
Consideration payable in cash		$ 15,200,000
Consideration payable in shares		2,282,511
Assets					668,000,000		$ 668,000,000
Loans					448,000,000		448,000,000
Deposits					$ 511,000,000		$ 511,000,000

Basis of Accounting and Conso_5

Basis of Accounting and Consolidation - Schedule of Components of Accumulated Other Comprehensive Income (Details) - Accumulated Other Comprehensive Income - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized gains on securities available-for-sale	$ 7,934	$ 24,077
Tax expense	(2,301)	(6,982)
Balance	$ 5,633	$ 17,095

Basis of Accounting and Conso_6

Basis of Accounting and Consolidation - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Realized gains on available-for-sale securities	$ 11	$ 95	$ 88	$ 913
Tax effect	(6,105)	(3,720)	(10,130)	(9,988)
Total reclassifications out of accumulated other comprehensive income	8	67	62	648
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Realized gains on available-for-sale securities	11	95	88	913
Tax effect	$ (3)	$ (28)	$ (26)	$ (265)

Basis of Accounting and Conso_7

Basis of Accounting and Consolidation - Schedule of Impact of ASU 2016-13 Adoption (Details) - USD ($)	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans	$ 53,983,000	$ 54,597,000	$ 41,910,000	$ 41,915,000	$ 38,381,000		$ 26,911,000
Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							26,911,000
Allowance for credit losses on off-balance sheet exposures							0
ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						$ 28,583,000
Allowance for credit losses on off-balance sheet exposures						69,000
ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,672,000
Allowance for credit losses on off-balance sheet exposures						69,000
Construction and Land Development | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,146,000
Construction and Land Development | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,033,000
Construction and Land Development | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						(113,000)
Agricultural Real Estate | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,093,000
Agricultural Real Estate | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,323,000
Agricultural Real Estate | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						230,000
1-4 Family Residential Properties | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,386,000
1-4 Family Residential Properties | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						2,142,000
1-4 Family Residential Properties | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						756,000
Commercial Real Estate | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							11,198,000
Commercial Real Estate | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						11,739,000
Commercial Real Estate | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						541,000
Agricultural | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,386,000
Agricultural | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,023,000
Agricultural | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						(363,000)
Commercial & Industrial | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							9,273,000
Commercial & Industrial | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						9,428,000
Commercial & Industrial | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						155,000
Consumer | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							$ 1,429,000
Consumer | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,895,000
Consumer | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						$ 466,000

Basis of Accounting and Conso_8

Basis of Accounting and Consolidation - Schedule of Impact of ASU 2016-13 Adoption of PCD Assets Previously Classified as PCI (Details) - USD ($)	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans	$ 53,983,000	$ 54,597,000	$ 41,910,000	$ 41,915,000	$ 38,381,000		$ 26,911,000
Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							26,911,000
ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						$ 28,583,000
ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,672,000
Construction and Land Development | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,146,000
Construction and Land Development | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,033,000
Construction and Land Development | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						(113,000)
1-4 Family Residential Properties | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							1,386,000
1-4 Family Residential Properties | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						2,142,000
1-4 Family Residential Properties | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						756,000
Commercial Real Estate | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							11,198,000
Commercial Real Estate | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						11,739,000
Commercial Real Estate | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						541,000
Commercial & Industrial | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							9,273,000
Commercial & Industrial | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						9,428,000
Commercial & Industrial | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						155,000
Financial Asset Acquired with Credit Deterioration | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							365,000
Financial Asset Acquired with Credit Deterioration | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						1,198,000
Financial Asset Acquired with Credit Deterioration | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						833,000
Financial Asset Acquired with Credit Deterioration | Construction and Land Development | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							0
Financial Asset Acquired with Credit Deterioration | Construction and Land Development | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						291,000
Financial Asset Acquired with Credit Deterioration | Construction and Land Development | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						291,000
Financial Asset Acquired with Credit Deterioration | 1-4 Family Residential Properties | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							6,000
Financial Asset Acquired with Credit Deterioration | 1-4 Family Residential Properties | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						48,000
Financial Asset Acquired with Credit Deterioration | 1-4 Family Residential Properties | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						42,000
Financial Asset Acquired with Credit Deterioration | Commercial Real Estate | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							359,000
Financial Asset Acquired with Credit Deterioration | Commercial Real Estate | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						818,000
Financial Asset Acquired with Credit Deterioration | Commercial Real Estate | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						459,000
Financial Asset Acquired with Credit Deterioration | Commercial & Industrial | Pre-ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans							$ 0
Financial Asset Acquired with Credit Deterioration | Commercial & Industrial | ASU 2016-13
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						41,000
Financial Asset Acquired with Credit Deterioration | Commercial & Industrial | ASU 2016-13 | Impact of ASU
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses on loans						$ 41,000

Earnings Per Share - Components

Earnings Per Share - Components of Basic and Diluted Net Income Per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic Net Income per Common Share Available to Common Stockholders:
Net income	$ 18,326,000	$ 11,565,000	$ 34,656,000	$ 31,701,000
Weighted average common shares outstanding	18,083,126	16,728,191	17,819,619	16,710,485
Basic earnings per common share	$ 1.01	$ 0.69	$ 1.94	$ 1.90
Diluted Net Income per Common Share Available to Common Stockholders:
Net income applicable to diluted earnings per share	$ 18,326,000	$ 11,565,000	$ 34,656,000	$ 31,701,000
Weighted average common shares outstanding	18,083,126	16,728,191	17,819,619	16,710,485
Dilutive potential common shares: restricted stock awarded	53,020	46,908	53,020	46,908
Diluted weighted average common shares outstanding	18,136,146	16,775,099	17,872,639	16,757,393
Diluted earnings per common share	$ 1.01	$ 0.69	$ 1.94	$ 1.89

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Number of anti-dilutive shares excluded when computing diluted earnings per share	0	0	0	0

Investment Securities - Availab

Investment Securities - Available for Sale and Held for Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available-for-sale: [Abstract]
Amortized Cost	$ 1,339,032	$ 855,163
Gross Unrealized Gains	18,801	25,075
Gross Unrealized (Losses)	(10,867)	(998)
Fair Value	1,346,966	879,240
Held-to-maturity: [Abstract]
Held-to-maturity	7,026	5,016
Gross Unrealized Gains	31
Unrealized (Losses)	0
Fair Value	7,057	5,119
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale: [Abstract]
Amortized Cost	194,162	127,067
Gross Unrealized Gains	308	790
Gross Unrealized (Losses)	(2,786)	(788)
Fair Value	191,684	127,069
Held-to-maturity: [Abstract]
Held-to-maturity	5,004	5,016
Gross Unrealized Gains	31	103
Unrealized (Losses)	0	0
Fair Value	5,035	5,119
Obligations of States and Political Subdivisions
Available-for-sale: [Abstract]
Amortized Cost	328,394	237,886
Gross Unrealized Gains	11,310	11,995
Gross Unrealized (Losses)	(960)	(37)
Fair Value	338,744	249,844
Mortgage-backed Securities: GSE Residential
Available-for-sale: [Abstract]
Amortized Cost	783,400	479,470
Gross Unrealized Gains	6,300	12,038
Gross Unrealized (Losses)	(7,085)	(160)
Fair Value	782,615	491,348
Other Securities
Available-for-sale: [Abstract]
Amortized Cost	33,076	10,740
Gross Unrealized Gains	883	252
Gross Unrealized (Losses)	(36)	(13)
Fair Value	33,923	$ 10,979
Held-to-maturity: [Abstract]
Held-to-maturity	2,022
Gross Unrealized Gains	0
Unrealized (Losses)	0
Fair Value	$ 2,022

Investment Securities - Additio

Investment Securities - Additional Information (Details)	9 Months Ended
	Sep. 30, 2021USD ($)Security	Dec. 31, 2020USD ($)Security
Schedule Of Available For Sale Securities [Line Items]
Equity securities, at fair value	$ 348,000	$ 218,000
Tax rate used to calculate tax-equivalent yields (in hundredths)	21.00%
Percentage investment book value exceeds stockholders' equity (in hundredths)	10.00%
Debt securities, available-for-sale, restricted	$ 740,000,000	$ 531,000,000
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Schedule Of Available For Sale Securities [Line Items]
Number of securities in unrealized loss positions | Security	1	1
12 months or longer, fair value	$ 9,649,000	$ 9,649,000
12 months or longer, unrealized losses	$ 351,000	$ 351,000
Held-to-maturity, securities in unrealized loss positions, qualitative disclosure, number of positions | Security	0	0
Obligations of States and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Number of securities in unrealized loss positions | Security	0	0
Mortgage-backed Securities: GSE Residential
Schedule Of Available For Sale Securities [Line Items]
Number of securities in unrealized loss positions | Security	11	2
12 months or longer, fair value	$ 93,000	$ 2,377,000
12 months or longer, unrealized losses	$ 1,000	$ 0
Other Securities
Schedule Of Available For Sale Securities [Line Items]
Number of securities in unrealized loss positions | Security	0	0

Investment Securities - Realize

Investment Securities - Realized Gains and Losses From Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Realized Investment Gains (Losses) [Abstract]
Gross gains	$ 11	$ 116	$ 88	$ 934
Gross losses	$ 0	$ (21)	$ 0	$ (21)

Investment Securities - Investm

Investment Securities - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale investments, One year or less	$ 165,195
Available-for-sale investments, After 1 through 5 years	581,144
Available-for-sale investments, After 5 through 10 years	592,862
Available-for-sale investments, After ten years	7,765
Available-for-sale investments, Fair Value	$ 1,346,966	$ 879,240
Available-for-sale, Weighted average yield, One year or less (in hundredths)	1.61%
Available-for-sale , Weighted average yield,After 1 through 5 years (in hundredths)	1.95%
Available-for-sale, Weighted average yield,After 5 through 10 years (in hundredths)	1.68%
Available-for-sale , Weighted average yield,After ten years (in hundredths)	2.43%
Available-for-sale , Weighted average yield,Total (in hundredths)	1.79%
Available-for-sale, Full Tax-equivalent yield, One year or less (in hundredths)	1.78%
Available-for-sale, Full Tax-equivalent yield,After 1 through 5 years (in hundredths)	2.10%
Available-for-sale, Full Tax-equivalent yield, After 5 through 10 years (in hundredths)	1.94%
Available-for-sale, Full Tax-equivalent yield,After ten years (in hundredths)	3.16%
Available-for-sale, Full Tax-equivalent yield,Total (in hundredths)	2.00%
Held-to-maturity, Maturity [Abstract]
Held-to-maturity, One Year or less	$ 5,004
Held-to-maturity, After1 through 5 years	0
Held-to-maturity, After 5 through 10 years	0
Held-to-maturity, After ten years	2,022
Held-to-maturity	$ 7,026	5,016
Held To Maturity Weighted average yield, One year or less	2.06%
Held To Maturity Weighted average yield, After 1 through 5 years	0.00%
Held To Maturity Weighted average yield After 5 through 10 years	0.00%
Held To Maturity Weighted average yield After ten years	0.00%
Held To Maturity Weighted average yield ,Total	2.06%
Held To Maturity, Full tax-equivalent yield , One year or less	2.06%
Held To Maturity, Full tax-equivalent yield , After 1 through 5 years	0.00%
Held To Maturity, Full tax-equivalent yield , After 5 through 10 years	0.00%
Held To Maturity, Full tax-equivalent yield , After ten years	0.00%
Held To Maturity, Full tax-equivalent yield , Total	2.06%
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale investments, One year or less	$ 116,855
Available-for-sale investments, After 1 through 5 years	63,561
Available-for-sale investments, After 5 through 10 years	11,268
Available-for-sale investments, After ten years	0
Available-for-sale investments, Fair Value	191,684	127,069
Held-to-maturity, Maturity [Abstract]
Held-to-maturity, One Year or less	5,004
Held-to-maturity, After1 through 5 years	0
Held-to-maturity, After 5 through 10 years	0
Held-to-maturity, After ten years	0
Held-to-maturity	5,004	5,016
Obligations of States and Political Subdivisions
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale investments, One year or less	24,335
Available-for-sale investments, After 1 through 5 years	82,566
Available-for-sale investments, After 5 through 10 years	224,078
Available-for-sale investments, After ten years	7,765
Available-for-sale investments, Fair Value	338,744	249,844
Mortgage-backed Securities: GSE Residential
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale investments, One year or less	17,950
Available-for-sale investments, After 1 through 5 years	410,157
Available-for-sale investments, After 5 through 10 years	354,508
Available-for-sale investments, After ten years	0
Available-for-sale investments, Fair Value	782,615	491,348
Other Securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale investments, One year or less	6,055
Available-for-sale investments, After 1 through 5 years	24,860
Available-for-sale investments, After 5 through 10 years	3,008
Available-for-sale investments, After ten years	0
Available-for-sale investments, Fair Value	33,923	$ 10,979
Held-to-maturity, Maturity [Abstract]
Held-to-maturity, One Year or less	0
Held-to-maturity, After1 through 5 years	0
Held-to-maturity, After 5 through 10 years	0
Held-to-maturity, After ten years	2,022
Held-to-maturity	$ 2,022

Investment Securities - Fair Va

Investment Securities - Fair Value of Investments with Sustained Gross Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Less than 12 months, Fair Value	$ 752,588	$ 126,177
Available-for-sale, Less than 12 months, Unrealized Losses	(10,515)	(998)
Available-for-sale, 12 months or longer, Fair Value	9,742	2,377
Available-for-sale, 12 months or longer, Unrealized losses	(352)	0
Available-for-sale, Total Fair Value	762,330	128,554
Available-for-sale, Total Unrealized Losses	(10,867)	(998)
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Less than 12 months, Fair Value	145,432	59,211
Available-for-sale, Less than 12 months, Unrealized Losses	(2,435)	(788)
Available-for-sale, 12 months or longer, Fair Value	9,649	0
Available-for-sale, 12 months or longer, Unrealized losses	(351)	0
Available-for-sale, Total Fair Value	155,081	59,211
Available-for-sale, Total Unrealized Losses	(2,786)	(788)
Obligations of States and Political Subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Less than 12 months, Fair Value	87,767	5,380
Available-for-sale, Less than 12 months, Unrealized Losses	(960)	(37)
Available-for-sale, 12 months or longer, Fair Value	0	0
Available-for-sale, 12 months or longer, Unrealized losses	0	0
Available-for-sale, Total Fair Value	87,767	5,380
Available-for-sale, Total Unrealized Losses	(960)	(37)
Mortgage-backed Securities: GSE Residential
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Less than 12 months, Fair Value	508,332	57,609
Available-for-sale, Less than 12 months, Unrealized Losses	(7,084)	(160)
Available-for-sale, 12 months or longer, Fair Value	93	2,377
Available-for-sale, 12 months or longer, Unrealized losses	(1)	0
Available-for-sale, Total Fair Value	508,425	59,986
Available-for-sale, Total Unrealized Losses	(7,085)	(160)
Other Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Available-for-sale, Less than 12 months, Fair Value	11,057	3,977
Available-for-sale, Less than 12 months, Unrealized Losses	(36)	(13)
Available-for-sale, 12 months or longer, Fair Value	0	0
Available-for-sale, 12 months or longer, Unrealized losses	0	0
Available-for-sale, Total Fair Value	11,057	3,977
Available-for-sale, Total Unrealized Losses	$ (36)	$ (13)

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 3,951,699		$ 3,143,921
Loans held for sale	1,897		1,924
Loans and leases receivable gross excluding loans held for sale	3,949,802		3,141,997
Net deferred loan fees, premiums and discounts	3,930		5,502
Allowance for credit losses	53,983	$ 54,597	41,910	$ 41,915	$ 38,381	$ 26,911
Net loans	3,891,889		3,094,585
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,761,093		2,068,550
Construction and Land Development | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	179,792		122,853
Allowance for credit losses	2,109	1,795	1,666	2,206	2,358	1,146
Agricultural | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	278,432		254,662
Allowance for credit losses	1,257	1,665	1,084	1,666	1,634	1,093
Commercial | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,583,583		1,176,290
Allowance for credit losses	25,580	25,664	19,660	18,808	16,272	11,198
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	126,473		137,333
Allowance for credit losses	816	906	1,526	1,234	1,323	1,386
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	839,630		741,819
Allowance for credit losses	18,608	19,842	13,485	13,372	12,360	9,273
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	80,779		78,023
Allowance for credit losses	2,953	2,155	2,167	2,238	1,948	1,429
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	143,724		118,196
1-4 Family | Residential Properties | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	412,320		325,480
Allowance for credit losses	2,660	$ 2,570	2,322	$ 2,391	$ 2,486	$ 1,386
Multifamily | Residential Properties | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 306,966		$ 189,265

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Additional Information (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2021USD ($)alternativeLoan_modified	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)Loan_modified	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest on loans	$ 16,500,000		$ 15,900,000
Minimum value of loans individually measured for impairment	$ 250,000
Number of alternatives for measuring impaired loans receivable | alternative	3
Allowance for credit losses	$ 53,983,000	$ 41,915,000	41,910,000	$ 54,597,000	$ 38,381,000		$ 26,911,000
Financing receivable modifications performing recorded investment	4,278,000		4,373,000
Interest lost on nonaccrual loans	407,000	1,021,000
Troubled debt restructurings balance	7,707,000		9,502,000
Loans receivable, modifications, allowance	834,000		1,000,000
Real estate acquired through foreclosure	5,625,000		2,489,000
Mortgage loans secured by real estate In foreclosure	$ 550,000		$ 713,000
Financial Asset, Equal to or Greater than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings balance | Loan_modified	0		0
Accounting Standards Update 2016-13
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						$ 28,583,000
Accounting Standards Update 2016-13 | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						1,672,000
Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						1,198,000
Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						833,000
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortization period of loans	25 years
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt coverage ratio	1.20x
Commercial Real Estate | Accounting Standards Update 2016-13
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						11,739,000
Commercial Real Estate | Accounting Standards Update 2016-13 | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						541,000
Commercial Real Estate | Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						818,000
Commercial Real Estate | Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						459,000
Commercial Real Estate | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum loan-to-value ratio (in hundredths)	65.00%
Amortization period of loans	20 years
Commercial Real Estate | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum loan-to-value ratio (in hundredths)	80.00%
1-4 Family Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period when loans charged-down	180 days
1-4 Family Residential Properties | Accounting Standards Update 2016-13
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						2,142,000
1-4 Family Residential Properties | Accounting Standards Update 2016-13 | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						756,000
1-4 Family Residential Properties | Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						48,000
1-4 Family Residential Properties | Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration | Impact of ASU
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses						$ 42,000
Motels and Hotels Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 121,200,000
Non-residential Buildings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	637,500,000
Residential Buildings and Dwellings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	509,800,000
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable modifications performing recorded investment	3,709,000		$ 4,313,000
Troubled debt restructurings balance	$ 6,122,000		6,773,000
Unsecured Open-end Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period when loans charged-down	180 days
Other Secured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period when loans charged-down	120 days
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 405,300,000		391,700,000
Increase (decrease) in accounts and notes receivable	$ 13,600,000
Maximum loan-to-value ratio (in hundredths)	65.00%
Amortization period of loans	25 years
Loans receivable, time period	1 year
Agricultural | Corn and Other Grain Farming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 285,200,000		308,200,000
Increase (decrease) in accounts and notes receivable	(23,000,000)
Agricultural | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	$ 1,257,000	1,666,000	1,084,000	1,665,000	1,634,000		1,093,000
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum loan-to-value ratio (in hundredths)	80.00%
Amortization period of loans	7 years
Loans receivable, time period	1 year
Allowance for credit losses	$ 18,608,000	$ 13,372,000	13,485,000	$ 19,842,000	$ 12,360,000		$ 9,273,000
Financing receivable modifications performing recorded investment	335,000		58,000
Troubled debt restructurings balance	$ 1,059,000		$ 2,389,000
Residential Properties | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum loan-to-value ratio (in hundredths)	80.00%
Amortization period of loans	25 years

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Allowance for Credit Losses Based on Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	$ 54,597	$ 38,381	$ 41,910	$ 26,911	$ 26,911
Initial allowance on loans purchased with credit deterioration			2,074
Provision for credit loss expense	1,103	3,883	12,679	15,500	16,103
Loans charged off	2,076	556	3,493	2,942	3,844
Recoveries collected	359	207	813	774	1,068
Allowance for credit losses, Ending Balance	53,983	41,915	53,983	41,915	41,910
Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				1,672	1,672
Construction and Land Development | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,795	2,358	1,666	1,146	1,146
Initial allowance on loans purchased with credit deterioration			261
Provision for credit loss expense	314	(139)	205	1,186	646
Loans charged off	0	13	23	13	13
Recoveries collected	0	0	0	0	0
Allowance for credit losses, Ending Balance	2,109	2,206	2,109	2,206	1,666
Construction and Land Development | Real Estate Loan | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				(113)	(113)
Agricultural | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,665	1,634	1,084	1,093	1,093
Initial allowance on loans purchased with credit deterioration			44
Provision for credit loss expense	(408)	32	129	343	(239)
Loans charged off	0	0	0	0	0
Recoveries collected	0	0	0	0	0
Allowance for credit losses, Ending Balance	1,257	1,666	1,257	1,666	1,084
Agricultural | Real Estate Loan | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				230	230
Residential Properties | Real Estate Loan | 1-4 Family
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	2,570	2,486	2,322	1,386	1,386
Initial allowance on loans purchased with credit deterioration			328
Provision for credit loss expense	27	(71)	117	335	274
Loans charged off	45	48	241	313	393
Recoveries collected	108	24	134	227	299
Allowance for credit losses, Ending Balance	2,660	2,391	2,660	2,391	2,322
Residential Properties | Real Estate Loan | 1-4 Family | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				756	756
Commercial | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	25,664	16,272	19,660	11,198	11,198
Initial allowance on loans purchased with credit deterioration			646
Provision for credit loss expense	(52)	2,463	5,764	7,542	8,581
Loans charged off	55	0	535	551	829
Recoveries collected	23	73	45	78	169
Allowance for credit losses, Ending Balance	25,580	18,808	25,580	18,808	19,660
Commercial | Real Estate Loan | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				541	541
Agricultural Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	906	1,323	1,526	1,386	1,386
Initial allowance on loans purchased with credit deterioration			0
Provision for credit loss expense	(90)	(89)	(711)	211	503
Loans charged off	0	0	0	0	0
Recoveries collected	0	0	1	0	0
Allowance for credit losses, Ending Balance	816	1,234	816	1,234	1,526
Agricultural Loans | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				(363)	(363)
Commercial and Industrial Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	19,842	12,360	13,485	9,273	9,273
Initial allowance on loans purchased with credit deterioration			795
Provision for credit loss expense	342	1,352	5,950	5,453	5,869
Loans charged off	1,600	368	1,686	1,651	1,991
Recoveries collected	24	28	64	142	179
Allowance for credit losses, Ending Balance	18,608	13,372	18,608	13,372	13,485
Commercial and Industrial Loans | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				155	155
Consumer Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	2,155	1,948	2,167	1,429	1,429
Initial allowance on loans purchased with credit deterioration			0
Provision for credit loss expense	970	335	1,225	430	469
Loans charged off	376	127	1,008	414	618
Recoveries collected	204	82	569	327	421
Allowance for credit losses, Ending Balance	$ 2,953	$ 2,238	$ 2,953	2,238	2,167
Consumer Loans | Cumulative Change in Accounting Principal, Adjustment | ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance				$ 466	$ 466

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Amortized Cost Basis of Collateral-Dependent Loans by Class of Loans Individually Evaluated (Details) $ in Thousands	Sep. 30, 2021USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 22,727
Allowance for Credit Losses	2,532
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	3,213
Allowance for Credit Losses	1,190
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	10
Allowance for Credit Losses	0
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	24
Allowance for Credit Losses	0
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	19,480
Real Estate | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate | All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	2,170
Business Assets | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	2,146
Business Assets | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Business Assets | All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	24
Other Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,077
Other Property | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,067
Other Property | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	10
Other Property | All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	19,480
Allowance for Credit Losses	1,342
Real Estate Loan | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,407
Allowance for Credit Losses	233
Real Estate Loan | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	10,830
Allowance for Credit Losses	864
Real Estate Loan | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	19,480
Real Estate Loan | Real Estate | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,407
Real Estate Loan | Real Estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	10,830
Real Estate Loan | Business Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Business Assets | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Business Assets | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Other Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Other Property | Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Real Estate Loan | Other Property | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
1-4 Family | Real Estate Loan | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	5,438
Allowance for Credit Losses	245
1-4 Family | Real Estate Loan | Real Estate | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	5,438
1-4 Family | Real Estate Loan | Business Assets | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
1-4 Family | Real Estate Loan | Other Property | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Multifamily | Real Estate Loan | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,805
Allowance for Credit Losses	0
Multifamily | Real Estate Loan | Real Estate | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	1,805
Multifamily | Real Estate Loan | Business Assets | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	0
Multifamily | Real Estate Loan | Other Property | Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 0

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio on Amortized Cost Basis Based on Risk Rating Category (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Credit Quality Information [Abstract]
Current fiscal year	$ 799,252	$ 1,085,080
Fiscal year before current fiscal year	911,425	558,953
Two years before current fiscal year	624,971	386,847
Three years before current fiscal year	397,185	300,829
Four years before current fiscal year	241,548	247,242
Prior	929,680	517,313
Revolving Loans	43,708	42,155
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	3,947,769	3,138,419
Pass
Credit Quality Information [Abstract]
Current fiscal year	775,322	1,052,257
Fiscal year before current fiscal year	907,023	511,427
Two years before current fiscal year	604,031	367,652
Three years before current fiscal year	387,870	279,274
Four years before current fiscal year	218,694	230,730
Prior	884,824	459,453
Revolving Loans	42,664	40,363
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	3,820,428	2,941,156
Special Mention
Credit Quality Information [Abstract]
Current fiscal year	20,819	29,692
Fiscal year before current fiscal year	2,350	44,049
Two years before current fiscal year	12,071	8,731
Three years before current fiscal year	3,073	15,165
Four years before current fiscal year	14,318	9,344
Prior	23,535	30,525
Revolving Loans	56	293
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	76,222	137,799
Substandard
Credit Quality Information [Abstract]
Current fiscal year	3,111	3,131
Fiscal year before current fiscal year	2,052	3,477
Two years before current fiscal year	8,869	10,464
Three years before current fiscal year	6,242	6,390
Four years before current fiscal year	8,536	7,168
Prior	21,321	27,335
Revolving Loans	988	1,499
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	51,119	59,464
Agricultural Loans
Credit Quality Information [Abstract]
Current fiscal year	90,743	104,515
Fiscal year before current fiscal year	20,384	20,401
Two years before current fiscal year	8,539	6,697
Three years before current fiscal year	3,808	2,062
Four years before current fiscal year	1,234	783
Prior	1,826	2,894
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	126,534	137,352
Agricultural Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	75,148	83,377
Fiscal year before current fiscal year	19,930	15,680
Two years before current fiscal year	5,582	5,978
Three years before current fiscal year	3,653	1,838
Four years before current fiscal year	1,074	635
Prior	1,480	2,856
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	106,867	110,364
Agricultural Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	15,568	21,070
Fiscal year before current fiscal year	436	4,483
Two years before current fiscal year	2,957	694
Three years before current fiscal year	155	224
Four years before current fiscal year	160	148
Prior	65	38
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	19,341	26,657
Agricultural Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	27	68
Fiscal year before current fiscal year	18	238
Two years before current fiscal year	0	25
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	281	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	326	331
Consumer Loans
Credit Quality Information [Abstract]
Current fiscal year	20,973	31,624
Fiscal year before current fiscal year	21,642	21,424
Two years before current fiscal year	27,447	12,219
Three years before current fiscal year	6,694	8,375
Four years before current fiscal year	2,670	3,218
Prior	638	1,142
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	80,064	78,002
Consumer Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	20,854	31,609
Fiscal year before current fiscal year	21,547	21,384
Two years before current fiscal year	27,317	12,084
Three years before current fiscal year	6,633	8,279
Four years before current fiscal year	2,640	3,150
Prior	492	1,022
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	79,483	77,528
Consumer Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	21	0
Fiscal year before current fiscal year	78	24
Two years before current fiscal year	55	24
Three years before current fiscal year	10	1
Four years before current fiscal year	0	1
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	164	50
Consumer Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	98	15
Fiscal year before current fiscal year	17	16
Two years before current fiscal year	75	111
Three years before current fiscal year	51	95
Four years before current fiscal year	30	67
Prior	146	120
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	417	424
Commercial and Industrial Loans
Credit Quality Information [Abstract]
Current fiscal year	154,001	376,688
Fiscal year before current fiscal year	186,054	166,638
Two years before current fiscal year	168,726	71,878
Three years before current fiscal year	79,480	81,068
Four years before current fiscal year	3,889	43,676
Prior	387,441	116,603
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	979,591	856,551
Commercial and Industrial Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	152,729	371,683
Fiscal year before current fiscal year	184,801	132,148
Two years before current fiscal year	166,553	70,497
Three years before current fiscal year	77,324	78,890
Four years before current fiscal year	3,402	42,439
Prior	384,318	114,904
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	969,127	810,561
Commercial and Industrial Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	844	4,116
Fiscal year before current fiscal year	542	32,130
Two years before current fiscal year	1,725	849
Three years before current fiscal year	568	489
Four years before current fiscal year	416	1,101
Prior	1,155	730
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,250	39,415
Commercial and Industrial Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	428	889
Fiscal year before current fiscal year	711	2,360
Two years before current fiscal year	448	532
Three years before current fiscal year	1,588	1,689
Four years before current fiscal year	71	136
Prior	1,968	969
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,214	6,575
Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,761,580	2,066,514
Real Estate Loan | Construction and Land Development
Credit Quality Information [Abstract]
Current fiscal year	33,652	41,842
Fiscal year before current fiscal year	68,429	41,117
Two years before current fiscal year	26,623	31,500
Three years before current fiscal year	35,654	3,277
Four years before current fiscal year	3,841	871
Prior	11,862	3,872
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	180,061	122,479
Real Estate Loan | Construction and Land Development | Pass
Credit Quality Information [Abstract]
Current fiscal year	33,540	41,842
Fiscal year before current fiscal year	68,429	40,989
Two years before current fiscal year	26,623	31,500
Three years before current fiscal year	34,739	2,760
Four years before current fiscal year	3,841	871
Prior	11,328	3,822
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	178,500	121,784
Real Estate Loan | Construction and Land Development | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	112	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	112	0
Real Estate Loan | Construction and Land Development | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	128
Two years before current fiscal year	0	0
Three years before current fiscal year	915	517
Four years before current fiscal year	0	0
Prior	534	50
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,449	695
Real Estate Loan | Agricultural
Credit Quality Information [Abstract]
Current fiscal year	63,167	75,475
Fiscal year before current fiscal year	66,079	38,382
Two years before current fiscal year	34,752	39,172
Three years before current fiscal year	37,429	16,815
Four years before current fiscal year	13,540	14,729
Prior	63,821	69,768
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	278,788	254,341
Real Estate Loan | Agricultural | Pass
Credit Quality Information [Abstract]
Current fiscal year	62,342	73,630
Fiscal year before current fiscal year	65,820	34,412
Two years before current fiscal year	30,303	37,839
Three years before current fiscal year	36,823	16,138
Four years before current fiscal year	13,095	13,559
Prior	57,580	58,291
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	265,963	233,869
Real Estate Loan | Agricultural | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	825	1,845
Fiscal year before current fiscal year	259	3,970
Two years before current fiscal year	4,184	533
Three years before current fiscal year	417	469
Four years before current fiscal year	388	1,106
Prior	6,010	11,232
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	12,083	19,155
Real Estate Loan | Agricultural | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	265	800
Three years before current fiscal year	189	208
Four years before current fiscal year	57	64
Prior	231	245
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	742	1,317
Real Estate Loan | Commercial
Credit Quality Information [Abstract]
Current fiscal year	363,034	373,082
Fiscal year before current fiscal year	446,957	238,459
Two years before current fiscal year	318,548	184,780
Three years before current fiscal year	183,271	161,567
Four years before current fiscal year	177,071	155,046
Prior	401,285	250,998
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,890,166	1,363,932
Real Estate Loan | Commercial | Pass
Credit Quality Information [Abstract]
Current fiscal year	357,285	368,750
Fiscal year before current fiscal year	445,335	237,119
Two years before current fiscal year	310,825	171,591
Three years before current fiscal year	180,042	148,283
Four years before current fiscal year	161,629	143,400
Prior	376,631	215,616
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,831,747	1,284,759
Real Estate Loan | Commercial | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	3,369	2,469
Fiscal year before current fiscal year	886	1,300
Two years before current fiscal year	1,198	6,108
Three years before current fiscal year	1,418	11,262
Four years before current fiscal year	10,726	6,741
Prior	15,251	16,947
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	32,848	44,827
Real Estate Loan | Commercial | Substandard
Credit Quality Information [Abstract]
Current fiscal year	2,380	1,863
Fiscal year before current fiscal year	736	40
Two years before current fiscal year	6,525	7,081
Three years before current fiscal year	1,811	2,022
Four years before current fiscal year	4,716	4,905
Prior	9,403	18,435
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	25,571	34,346
1-4 Family | Real Estate Loan | Residential Properties
Credit Quality Information [Abstract]
Current fiscal year	73,682	81,854
Fiscal year before current fiscal year	101,880	32,532
Two years before current fiscal year	40,336	40,601
Three years before current fiscal year	50,849	27,665
Four years before current fiscal year	39,303	28,919
Prior	62,807	72,036
Revolving Loans	43,708	42,155
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	412,565	325,762
1-4 Family | Real Estate Loan | Residential Properties | Pass
Credit Quality Information [Abstract]
Current fiscal year	73,424	81,366
Fiscal year before current fiscal year	101,161	29,695
Two years before current fiscal year	36,828	38,163
Three years before current fiscal year	48,656	23,086
Four years before current fiscal year	33,013	26,676
Prior	52,995	62,942
Revolving Loans	42,664	40,363
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	388,741	302,291
1-4 Family | Real Estate Loan | Residential Properties | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	80	192
Fiscal year before current fiscal year	149	2,142
Two years before current fiscal year	1,952	523
Three years before current fiscal year	505	2,720
Four years before current fiscal year	2,628	247
Prior	1,054	1,578
Revolving Loans	56	293
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	6,424	7,695
1-4 Family | Real Estate Loan | Residential Properties | Substandard
Credit Quality Information [Abstract]
Current fiscal year	178	296
Fiscal year before current fiscal year	570	695
Two years before current fiscal year	1,556	1,915
Three years before current fiscal year	1,688	1,859
Four years before current fiscal year	3,662	1,996
Prior	8,758	7,516
Revolving Loans	988	1,499
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	$ 17,400	$ 15,776

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 3,945,872	$ 3,136,495
Total Loans Receivable	3,947,769	3,138,419
Total Loans> 90 Days and Accruing	0	0
Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,761,580	2,066,514
Total Loans> 90 Days and Accruing	0	0
Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	180,061	122,479
Total Loans> 90 Days and Accruing	0	0
Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	278,788	254,341
Total Loans> 90 Days and Accruing	0	0
Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	412,565	325,762
Total Loans> 90 Days and Accruing	0	0
Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	306,911	189,632
Total Loans> 90 Days and Accruing	0	0
Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,583,255	1,174,300
Total Loans> 90 Days and Accruing	0	0
Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	126,534	137,352
Total Loans> 90 Days and Accruing	0	0
Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	835,860	738,313
Total Loans> 90 Days and Accruing	0	0
Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	80,064	78,002
Total Loans> 90 Days and Accruing	0	0
All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	143,731	118,238
Total Loans> 90 Days and Accruing	0	0
Financial Asset, 30 to 59 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,278	7,551
Financial Asset, 30 to 59 Days Past Due | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,606	4,937
Financial Asset, 30 to 59 Days Past Due | Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	458	0
Financial Asset, 30 to 59 Days Past Due | Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	23	1,198
Financial Asset, 30 to 59 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,205	1,121
Financial Asset, 30 to 59 Days Past Due | Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 30 to 59 Days Past Due | Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,920	2,618
Financial Asset, 30 to 59 Days Past Due | Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	735	43
Financial Asset, 30 to 59 Days Past Due | Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	550	2,426
Financial Asset, 30 to 59 Days Past Due | Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	387	145
Financial Asset, 30 to 59 Days Past Due | All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 60 to 89 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,063	1,538
Financial Asset, 60 to 89 Days Past Due | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,063	1,480
Financial Asset, 60 to 89 Days Past Due | Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	9	0
Financial Asset, 60 to 89 Days Past Due | Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	34
Financial Asset, 60 to 89 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	865	1,105
Financial Asset, 60 to 89 Days Past Due | Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	35	0
Financial Asset, 60 to 89 Days Past Due | Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,154	341
Financial Asset, 60 to 89 Days Past Due | Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	152	0
Financial Asset, 60 to 89 Days Past Due | Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	726	8
Financial Asset, 60 to 89 Days Past Due | Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	122	50
Financial Asset, 60 to 89 Days Past Due | All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	12,038	4,760
Financial Asset, Equal to or Greater than 90 Days Past Due | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	8,947	2,955
Financial Asset, Equal to or Greater than 90 Days Past Due | Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	642	128
Financial Asset, Equal to or Greater than 90 Days Past Due | Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	94	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,313	2,033
Financial Asset, Equal to or Greater than 90 Days Past Due | Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	544	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,354	794
Financial Asset, Equal to or Greater than 90 Days Past Due | Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	588	236
Financial Asset, Equal to or Greater than 90 Days Past Due | Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,367	1,420
Financial Asset, Equal to or Greater than 90 Days Past Due | Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	136	149
Financial Asset, Equal to or Greater than 90 Days Past Due | All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Total Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	21,379	13,849
Total Past Due | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	15,616	9,372
Total Past Due | Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,109	128
Total Past Due | Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	117	1,232
Total Past Due | Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	7,383	4,259
Total Past Due | Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	579	0
Total Past Due | Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,428	3,753
Total Past Due | Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,475	279
Total Past Due | Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,643	3,854
Total Past Due | Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	645	344
Total Past Due | All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Current
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,926,390	3,124,570
Current | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,745,964	2,057,142
Current | Construction and Land Development | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	178,952	122,351
Current | Agricultural | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	278,671	253,109
Current | Residential Properties | Real Estate Loan | 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	405,182	321,503
Current | Residential Properties | Real Estate Loan | Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	306,332	189,632
Current | Commercial | Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,576,827	1,170,547
Current | Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	125,059	137,073
Current | Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	832,217	734,459
Current | Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	79,419	77,658
Current | All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 143,731	$ 118,238

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Amortized Cost Basis of Loans on Nonaccrual Status and Nonaccrual Loans Individually Evaluated (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	$ 21,003	$ 21,457
Financing Receivable, Nonaccrual	23,445	23,750
Construction and Land Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	943	162
Financing Receivable, Nonaccrual	943	162
Agricultural Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	338	359
Financing Receivable, Nonaccrual	338	359
1-4 Family Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	7,179	6,747
Financing Receivable, Nonaccrual	7,232	6,930
Multifamily Residential Properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	2,047	2,181
Financing Receivable, Nonaccrual	2,047	2,181
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	8,141	7,345
Financing Receivable, Nonaccrual	8,525	8,760
Loans Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	18,648	16,794
Financing Receivable, Nonaccrual	19,085	18,392
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	236	659
Financing Receivable, Nonaccrual	236	659
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	1,886	3,677
Financing Receivable, Nonaccrual	3,891	4,372
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	233	327
Financing Receivable, Nonaccrual	233	327
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual, No Allowance	0	0
Financing Receivable, Nonaccrual	$ 0	$ 0

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Recorded Balance of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	$ 7,707	$ 9,502
Financing Receivable Modifications Performing Recorded Investment	4,278	4,373
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	6,122	6,773
Financing Receivable Modifications Performing Recorded Investment	3,709	4,313
Construction Loans | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	492
Residential Properties | Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	1,507	1,603
Financing Receivable Modifications Performing Recorded Investment	887	1,268
Agricultural Real Estate Loans | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	250
Financing Receivable Modifications Performing Recorded Investment	250
Commercial | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	3,873	5,170
Financing Receivable Modifications Performing Recorded Investment	2,572	3,045
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	384	228
Financing Receivable Modifications Performing Recorded Investment	156
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	1,059	2,389
Financing Receivable Modifications Performing Recorded Investment	335	58
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	118	112
Financing Receivable Modifications Performing Recorded Investment	54	$ 2
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings Balance	24
Financing Receivable Modifications Performing Recorded Investment	$ 24

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Loans Modified as Troubled Debt Restructurings During Period (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)Modification	Sep. 30, 2020USD ($)Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	17	8
Financing Receivables, Modifications during Period, Balance | $	$ 2,267	$ 2,723
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	5	1
Financing Receivables, Modifications during Period, Balance | $	$ 1,746	$ 296
Real Estate Loan | 1-4 Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	2	0
Financing Receivables, Modifications during Period, Balance | $	$ 323	$ 0
Construction and Land Development | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	0
Financing Receivables, Modifications during Period, Balance | $	$ 492	$ 0
Agricultural | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	0
Financing Receivables, Modifications during Period, Balance | $	$ 250	$ 0
Commercial Real Estate | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	1
Financing Receivables, Modifications during Period, Balance | $	$ 681	$ 296
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	2
Financing Receivables, Modifications during Period, Balance | $	$ 156	$ 88
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	6	4
Financing Receivables, Modifications during Period, Balance | $	$ 287	$ 2,328
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	4	1
Financing Receivables, Modifications during Period, Balance | $	$ 54	$ 11
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables, Modifications during Period, Number | Modification	1	0
Financing Receivables, Modifications during Period, Balance | $	$ 24	$ 0

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses - Summary of Purchased Credit Deteriorated (PCD) Loans (Details) - LINCO Bancshares, Inc. - USD ($) $ in Thousands	Feb. 22, 2021	Sep. 30, 2021
Summary Of Purchased Credit Deteriorated Loans [Line Items]
Purchase price of purchase credit deteriorated loans at acquisition		$ 64,647
Allowance for credit losses at acquisition	$ (2,000)	(2,074)
Non-credit discount/(premium) at acquisition		(187)
Fair value of purchased credit deteriorated loans at acquisition		$ 62,386

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill, Gross Carrying Value	$ 115,613	$ 108,752
Goodwill, Accumulated Amortization	3,760	3,760
Goodwill and Intangible Assets, Gross Carrying Value	178,533	160,511
Goodwill and Intangible Assets, Accumulated Amortization	36,332	32,907
Intangibles from Branch Acquisition
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Value	3,015	3,015
Intangible Assets, Accumulated Amortization	3,015	3,015
Core Deposit Intangibles
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Value	39,344	32,355
Intangible Assets, Accumulated Amortization	23,181	20,910
Other Intangibles
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Gross Carrying Value	20,561	16,389
Intangible Assets, Accumulated Amortization	$ 6,376	$ 5,222

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Feb. 22, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 111,853				$ 104,992
BBM & Associates, Inc.
Finite Lived Intangible Assets [Line Items]
Goodwill		$ 1,400
LINCO Bancshares, Inc.
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 5,449		$ 9,000	$ 5,449

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Reconciliation of Purchase Price Paid for Acquisition and Goodwill Recorded (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Feb. 22, 2021	Dec. 31, 2020
Less purchase accounting adjustments:
Goodwill	$ 111,853			$ 104,992
LINCO Bancshares, Inc.
Goodwill [Line Items]
Unallocated purchase price	12,248
Less purchase accounting adjustments:
Fair value of securities	264
Fair value of loans, net	(2,818)
Fair value of other real estate owned	915
Fair value of premises and equipment	6,360
Fair value of time deposits	(2,081)
Fair value of FHLB advances	(975)
Core deposit intangible	2,025
Other assets	3,293
Other liabilities	(184)
Goodwill, purchase accounting adjustments	6,799
Goodwill	$ 5,449	$ 9,000	$ 5,449

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Intangible Assets Mortgage Servicing Rights (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Fair market value adjustment	$ (115,000)
Mortgage Servicing Rights
Finite Lived Intangible Assets [Line Items]
Beginning balance	516,000	$ 1,444,000	$ 1,444,000
Fair market value adjustment	474,000	(328,000)	(273,000)
Mortgage servicing rights amortized	(528,000)	(415,000)	(593,000)
Interest only strip	(7,000)	(40,000)	(62,000)
Ending balance	$ 455,000	$ 661,000	$ 516,000

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets - Schedule of Intangible Assets Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 1,414	$ 1,277	$ 3,929	$ 3,862
Core Deposit Intangibles
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	809	804	2,247	2,468
Customer List Intangibles
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	432	326	1,154	979
Mortgage Servicing Rights
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 173	$ 147	$ 528	$ 415

Goodwill and Intangible Asset_7

Goodwill and Intangible Assets - Schedule of Expected Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Aggregate amortization expense:
For period 01/01/21-9/30/21	$ 1,414	$ 1,277	$ 3,929	$ 3,862
Estimated amortization expense:
For period 10/01/21-12/31/21	2,729		2,729
For year ended 12/31/22	5,119		5,119
For year ended 12/31/23	4,680		4,680
For year ended 12/31/24	4,292		4,292
For year ended 12/31/25	3,861		3,861
For year ended 12/31/26	$ 3,091		$ 3,091

Repurchase Agreements and Oth_3

Repurchase Agreements and Other Borrowings - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Repurchase Agreements And Other Borrowings [Abstract]
Securities sold under agreements to repurchase	$ 149,891,000	$ 206,937,000
Securities sold under agreements to repurchase increase (decrease)	$ (57,000,000)
Securities sold under agreements to repurchase weighted average rate	0.13%
FHLB borrowings	$ 111,900,000	$ 94,000,000
FHLB premium on borrowing	$ 700,000

Repurchase Agreements and Oth_4

Repurchase Agreements and Other Borrowings - Schedule of Securities Financing Transactions (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	$ 149,891	$ 206,937
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	56,324	37,423
Mortgage-backed Securities: GSE Residential
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	93,567	168,480
Miscellaneous
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	$ 0	$ 1,034

Repurchase Agreements and Oth_5

Repurchase Agreements and Other Borrowings - Federal Home Loan Bank, Advances (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 111,900,000	$ 94,000,000
Interest Rate 2.55% - Maturity Date October 1, 2021
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	7 years
Federal Home Loan Bank, Advances, Interest Rate	2.55%
Federal Home Loan Bank, Advances, Maturity Date	Oct. 1, 2021
Interest Rate 2.71% - Maturity Date March 21, 2022
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	5 years
Federal Home Loan Bank, Advances, Interest Rate	2.71%
Federal Home Loan Bank, Advances, Maturity Date	Mar. 21, 2022
Interest Rate 0.00% - Maturity Date May 31, 2022
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	1 year
Federal Home Loan Bank, Advances, Interest Rate	0.00%
Federal Home Loan Bank, Advances, Maturity Date	May 31, 2022
Interest Rate 2.41% - Maturity Date May 31, 2022
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	3 years
Federal Home Loan Bank, Advances, Interest Rate	2.41%
Federal Home Loan Bank, Advances, Maturity Date	May 31, 2022
Interest Rate 2.12% - Maturity Date June 7, 2022
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	3 years
Federal Home Loan Bank, Advances, Interest Rate	2.12%
Federal Home Loan Bank, Advances, Maturity Date	Jun. 7, 2022
Interest Rate 2.40% - Maturity Date January 9, 2023
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	8 years
Federal Home Loan Bank, Advances, Interest Rate	2.40%
Federal Home Loan Bank, Advances, Maturity Date	Jan. 9, 2023
Interest Rate 2.44% - Maturity Date May 30, 2023
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	4 years
Federal Home Loan Bank, Advances, Interest Rate	2.44%
Federal Home Loan Bank, Advances, Maturity Date	May 30, 2023
Interest Rate 1.51% - Maturity Date July 31, 2023
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	3 years 6 months
Federal Home Loan Bank, Advances, Interest Rate	1.51%
Federal Home Loan Bank, Advances, Maturity Date	Jul. 31, 2023
Interest Rate 0.77% - Maturity Date September 11, 2023
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	3 years 6 months
Federal Home Loan Bank, Advances, Interest Rate	0.77%
Federal Home Loan Bank, Advances, Maturity Date	Sep. 11, 2023
Interest Rate 1.45% - Maturity Date December 31, 2024
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 10,000,000
Federal Home Loan Bank Advances, Term (in years)	5 years
Federal Home Loan Bank, Advances, Interest Rate	1.45%
Federal Home Loan Bank, Advances, Maturity Date	Dec. 31, 2024
Interest Rate 0.91% - Maturity Date March 10, 2025
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	5 years
Federal Home Loan Bank, Advances, Interest Rate	0.91%
Federal Home Loan Bank, Advances, Maturity Date	Mar. 10, 2025
Interest Rate 2.64% - Maturity Date December 23, 2025
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 6,940,511
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	2.64%
Federal Home Loan Bank, Advances, Maturity Date	Dec. 23, 2025
Interest Rate 1.14% - Maturity Date October 3, 2029
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	1.14%
Federal Home Loan Bank, Advances, Maturity Date	Oct. 3, 2029
Interest Rate 1.15% - Maturity Date October 3, 2029
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	1.15%
Federal Home Loan Bank, Advances, Maturity Date	Oct. 3, 2029
Interest Rate 1.12% - Maturity Date October 3, 2029
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 5,000,000
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	1.12%
Federal Home Loan Bank, Advances, Maturity Date	Oct. 3, 2029
Interest Rate 1.39% - Maturity Date December 31, 2029
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 10,000,000
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	1.39%
Federal Home Loan Bank, Advances, Maturity Date	Dec. 31, 2029
Interest Rate 1.41% - Maturity Date December 31, 2029
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items]
Federal Home Loan Bank Advances	$ 15,000,000
Federal Home Loan Bank Advances, Term (in years)	10 years
Federal Home Loan Bank, Advances, Interest Rate	1.41%
Federal Home Loan Bank, Advances, Maturity Date	Dec. 31, 2029

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Available-for-sale securities:
Total available-for-sale securities	$ 1,346,966,000	$ 879,240,000
Equity securities, at fair value	348,000	218,000
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale securities:
Total available-for-sale securities	191,684,000	127,069,000
Obligations of States and Political Subdivisions
Available-for-sale securities:
Total available-for-sale securities	338,744,000	249,844,000
Mortgage-backed Securities
Available-for-sale securities:
Total available-for-sale securities	782,615,000	491,348,000
Other Securities
Available-for-sale securities:
Total available-for-sale securities	33,923,000	10,979,000
Fair Value, Recurring
Available-for-sale securities:
Total available-for-sale securities	1,346,966,000	879,240,000
Equity securities, at fair value	348,000	218,000
Derivative assets, Interest rate swaps	35,000	1,399,000
Total assets	1,347,349,000	880,857,000
Derivative liabilities, Interest rate swaps	899,000	2,892,000
Fair Value, Recurring | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale securities:
Total available-for-sale securities	191,684,000	127,069,000
Fair Value, Recurring | Obligations of States and Political Subdivisions
Available-for-sale securities:
Total available-for-sale securities	338,744,000	249,844,000
Fair Value, Recurring | Mortgage-backed Securities
Available-for-sale securities:
Total available-for-sale securities	782,615,000	491,348,000
Fair Value, Recurring | Other Securities
Available-for-sale securities:
Total available-for-sale securities	33,923,000	10,979,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale securities:
Total available-for-sale securities	0	0
Equity securities, at fair value	348,000	218,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring
Available-for-sale securities:
Total available-for-sale securities	0	0
Equity securities, at fair value	348,000	218,000
Derivative assets, Interest rate swaps	0	0
Total assets	348,000	218,000
Derivative liabilities, Interest rate swaps	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale securities:
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Obligations of States and Political Subdivisions
Available-for-sale securities:
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Mortgage-backed Securities
Available-for-sale securities:
Total available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Other Securities
Available-for-sale securities:
Total available-for-sale securities	0	0
Significant Other Observable Inputs (Level 2)
Available-for-sale securities:
Total available-for-sale securities	1,346,351,000	878,446,000
Equity securities, at fair value	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring
Available-for-sale securities:
Total available-for-sale securities	1,346,350,000	878,446,000
Equity securities, at fair value	0	193,000
Derivative assets, Interest rate swaps	35,000	1,399,000
Total assets	1,346,385,000	880,038,000
Derivative liabilities, Interest rate swaps	899,000	2,892,000
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale securities:
Total available-for-sale securities	191,684,000	127,069,000
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Obligations of States and Political Subdivisions
Available-for-sale securities:
Total available-for-sale securities	338,128,000	249,050,000
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Mortgage-backed Securities
Available-for-sale securities:
Total available-for-sale securities	782,615,000	491,348,000
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Other Securities
Available-for-sale securities:
Total available-for-sale securities	33,923,000	10,979,000
Significant Unobservable Inputs (Level 3)
Available-for-sale securities:
Total available-for-sale securities	615,000	794,000
Equity securities, at fair value	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring
Available-for-sale securities:
Total available-for-sale securities	616,000	794,000
Equity securities, at fair value	0	0
Derivative assets, Interest rate swaps	0	0
Total assets	616,000	794,000
Derivative liabilities, Interest rate swaps	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies
Available-for-sale securities:
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Obligations of States and Political Subdivisions
Available-for-sale securities:
Total available-for-sale securities	616,000	794,000
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Mortgage-backed Securities
Available-for-sale securities:
Total available-for-sale securities	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Other Securities
Available-for-sale securities:
Total available-for-sale securities	$ 0	$ 0

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Fair Value of Assets Measured on a Recurring Basis Using Significant Unobservable Inputs (Details) - Obligations of States and Political Subdivisions - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 615	$ 792	$ 794	$ 973
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Total gains or losses:
Included in net income	1	1	3	4
Included in other comprehensive income (loss)	0	0	0	0
Purchases, issuances, sales and settlements:
Purchases	0	0	0	0
Issuances	0	0	0	0
Sales	0	0	0	0
Settlements	0	0	(181)	(184)
Ending balance	616	793	616	793
Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date	$ 0	$ 0	$ 0	$ 0

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Additional Information (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Allowance for Credit Losses	$ 2,532,000
Other real estate owned	5,625,000		$ 2,489,000
Mortgage servicing rights (MSR) impairment (recovery)	115,000
Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Finite-lived intangible assets, net	455,000	$ 661,000	516,000	$ 1,444,000
Mortgage servicing rights (MSR) impairment (recovery)	(474,000)	$ 328,000	$ 273,000
Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unpaid Principal Balance	16,035,000
Recorded Balance	13,682,000
Allowance for Credit Losses	2,353,000
Fair Value, Nonrecurring | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Indefinite-lived contractual rights	570,000
Finite-lived intangible assets, net	455,000
Fair Value, Nonrecurring | Carrying Amount
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other real estate owned	5,625,000
Fair Value, Nonrecurring | Fair Value
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other real estate owned	$ 1,720,000

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 13,682	$ 14,876
Foreclosed Assets Held-for-sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,720	290
Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	455	516
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreclosed Assets Held-for-sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Foreclosed Assets Held-for-sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,682	14,876
Significant Unobservable Inputs (Level 3) | Foreclosed Assets Held-for-sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,720	290
Significant Unobservable Inputs (Level 3) | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 455	$ 517

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities - Significant Unobservable Inputs Used in Valuation of Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Mortgage Servicing Rights | Minimum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage servicing rights	230.00%	242.00%
Mortgage Servicing Rights | Maximum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage servicing rights	438.00%	441.00%
Mortgage Servicing Rights | Weighted Average | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage servicing rights	281.00%	384.00%
Collateral Dependent Loans | Minimum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	0.00%	0.00%
Collateral Dependent Loans | Maximum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	40.00%	40.00%
Collateral Dependent Loans | Weighted Average | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	20.00%	20.00%
Foreclosed Assets Held-for-sale | Minimum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	0.00%	0.00%
Foreclosed Assets Held-for-sale | Maximum | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	40.00%	40.00%
Foreclosed Assets Held-for-sale | Weighted Average | Level 3 | Third Party Valuations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Collateral dependent loans	35.00%	35.00%
Fair Value, Nonrecurring | Mortgage Servicing Rights
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 455	$ 517
Fair Value, Nonrecurring | Collateral Dependent Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,682	14,876
Fair Value, Nonrecurring | Collateral Dependent Loans | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	13,682	14,876
Fair Value, Nonrecurring | Foreclosed Assets Held-for-sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 1,720	$ 290

Fair Value of Assets and Liab_8

Fair Value of Assets and Liabilities - Summary of Estimated Fair Values of Company Financial Instruments (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Financial assets
Total available-for-sale securities	$ 1,346,966,000	$ 879,240,000
Held-to-maturity securities	7,057,000	5,119,000
Equity securities	348,000	218,000
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks	343,859,000	415,973,000
Federal funds sold	1,347,000	1,308,000
Certificates of deposit investments	0	0
Total available-for-sale securities	0	0
Held-to-maturity securities	2,022,000	0
Equity securities	348,000	218,000
Loans held for sale	0	0
Loans net of allowance for credit losses	0	0
Interest receivable	0	0
Federal Reserve Bank stock	0	0
Federal Home Loan Bank stock	0	0
Financial liabilities
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Interest payable	0	0
Federal Home Loan Bank borrowings	0	0
Fair Value, Inputs, Level 1 [Member] | Subordinated Debt
Financial liabilities
Subordinated debt, net	0	0
Fair Value, Inputs, Level 1 [Member] | Junior Subordinated Debentures
Financial liabilities
Subordinated debt, net	0	0
Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and due from banks	0	0
Federal funds sold	0	0
Certificates of deposit investments	2,695,000	2,695,000
Total available-for-sale securities	1,346,351,000	878,446,000
Held-to-maturity securities	5,035,000	5,119,000
Equity securities	0	0
Loans held for sale	1,897,000	1,924,000
Loans net of allowance for credit losses	0	0
Interest receivable	22,057,000	19,287,000
Federal Reserve Bank stock	13,845,000	9,401,000
Federal Home Loan Bank stock	6,528,000	5,450,000
Financial liabilities
Deposits	4,347,567,000	3,215,715,000
Securities sold under agreements to repurchase	149,896,000	206,945,000
Interest payable	2,569,000	2,345,000
Federal Home Loan Bank borrowings	113,205,000	96,669,000
Fair Value, Inputs, Level 2 [Member] | Subordinated Debt
Financial liabilities
Subordinated debt, net	94,363,000	94,253,000
Fair Value, Inputs, Level 2 [Member] | Junior Subordinated Debentures
Financial liabilities
Subordinated debt, net	14,528,000	14,604,000
Level 3
Financial assets
Cash and due from banks	0	0
Federal funds sold	0	0
Certificates of deposit investments	0	0
Total available-for-sale securities	615,000	794,000
Held-to-maturity securities	0	0
Equity securities	0	0
Loans held for sale	0	0
Loans net of allowance for credit losses	3,830,149,000	3,056,344,000
Interest receivable	0	0
Federal Reserve Bank stock	0	0
Federal Home Loan Bank stock	0	0
Financial liabilities
Deposits	643,658,000	481,390,000
Securities sold under agreements to repurchase	0	0
Interest payable	0	0
Federal Home Loan Bank borrowings	0	0
Level 3 | Subordinated Debt
Financial liabilities
Subordinated debt, net	0	0
Level 3 | Junior Subordinated Debentures
Financial liabilities
Subordinated debt, net	0	0
Carrying Amount
Financial assets
Cash and due from banks	343,859,000	415,973,000
Federal funds sold	1,347,000	1,308,000
Certificates of deposit investments	2,695,000	2,695,000
Total available-for-sale securities	1,346,966,000	879,240,000
Held-to-maturity securities	7,026,000	5,016,000
Equity securities	348,000	218,000
Loans held for sale	1,897,000	1,924,000
Loans net of allowance for credit losses	3,891,889,000	3,094,585,000
Interest receivable	22,057,000	19,287,000
Federal Reserve Bank stock	13,845,000	9,401,000
Federal Home Loan Bank stock	6,528,000	5,450,000
Financial liabilities
Deposits	4,988,562,000	3,692,784,000
Securities sold under agreements to repurchase	149,891,000	206,937,000
Interest payable	2,569,000	2,345,000
Federal Home Loan Bank borrowings	112,641,000	93,969,000
Carrying Amount | Subordinated Debt
Financial liabilities
Subordinated debt, net	94,363,000	94,253,000
Carrying Amount | Junior Subordinated Debentures
Financial liabilities
Subordinated debt, net	19,153,000	19,027,000
Fair Value
Financial assets
Cash and due from banks	343,859,000	415,973,000
Federal funds sold	1,347,000	1,308,000
Certificates of deposit investments	2,695,000	2,695,000
Total available-for-sale securities	1,346,966,000	879,240,000
Held-to-maturity securities	7,057,000	5,119,000
Equity securities	348,000	218,000
Loans held for sale	1,897,000	1,924,000
Loans net of allowance for credit losses	3,830,149,000	3,056,344,000
Interest receivable	22,057,000	19,287,000
Federal Reserve Bank stock	13,845,000	9,401,000
Federal Home Loan Bank stock	6,528,000	5,450,000
Financial liabilities
Deposits	4,991,225,000	3,697,105,000
Securities sold under agreements to repurchase	149,896,000	206,945,000
Interest payable	2,569,000	2,345,000
Federal Home Loan Bank borrowings	113,205,000	96,669,000
Fair Value | Subordinated Debt
Financial liabilities
Subordinated debt, net	94,363,000	94,253,000
Fair Value | Junior Subordinated Debentures
Financial liabilities
Subordinated debt, net	$ 14,528,000	$ 14,604,000

Business Combinations - Additio

Business Combinations - Additional Information (Details) - USD ($)	Feb. 22, 2021	Sep. 25, 2020	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)			$ 4	$ 4
LINCO Bancshares, Inc.
Business Acquisition [Line Items]
Percentage of issued and outstanding shares acquired		100.00%
Common stock, par value (in dollars per share)		$ 1
Share Price		$ 4
Consideration paid in cash	$ 103,500,000	$ 103,500,000
Consideration paid in shares		1,262,246
Dividends paid		$ 13,000,000
Goodwill acquired during period	5,400,000
Pre-tax of acquisition costs	9,000,000		$ 8,500,000
Loans	828,976,000
Accreted to interest income over the remaining term of loans	11,100,000
Elimination of deferred fees and unearned discounts previously recorded by Providence Bank	1,700,000
Allowance for credit losses for loans identified as PCD	2,000,000		2,074,000
Purchased credit deteriorated loans			$ 64,647,000
Change in acquired time deposits	990,410,000
Change in FHLB advances	27,916,000
LINCO Bancshares, Inc. | Core Deposit Intangibles
Business Acquisition [Line Items]
Intangible assets fair value	$ 2,148,000
Intangible asset estimated useful life	10 years
LINCO Bancshares, Inc. | Fair Value Adjustments
Business Acquisition [Line Items]
Loans	$ (9,401,000)
Change in acquired time deposits	2,081,000
Change in FHLB advances	975,000
LINCO Bancshares, Inc. | Fair Value Adjustments | Core Deposit Intangibles
Business Acquisition [Line Items]
Intangible assets fair value	2,025,000
LINCO Bancshares, Inc. | Acquired Book Value
Business Acquisition [Line Items]
Loans	838,377,000
Purchased credit deteriorated loans	64,600,000
Change in acquired time deposits	988,329,000
Change in FHLB advances	26,941,000
LINCO Bancshares, Inc. | Acquired Book Value | Core Deposit Intangibles
Business Acquisition [Line Items]
Intangible assets fair value	$ 123,000

Business Combinations - Estimat

Business Combinations - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($)	Feb. 22, 2021	Sep. 25, 2020	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Assets
Goodwill			$ 111,853,000		$ 104,992,000
LINCO Bancshares, Inc.
Assets
Cash and due from banks	$ 130,561,000
Investment securities	119,498,000
Loans	828,976,000
Allowance for credit losses	(2,073,000)
Other real estate owned	9,350,000
Premises and equipment	29,800,000
Goodwill	5,449,000		$ 5,449,000	$ 9,000,000
Other assets	46,196,000
Total assets acquired	1,170,699,000
Liabilities
Deposits	990,410,000
Securities sold under agreements to repurchase	0
FHLB advances	27,916,000
Other borrowings	0
Lease liability	794,000
Other liabilities	3,888,000
Total liabilities assumed	1,023,008,000
Net assets acquired	147,691,000
Consideration paid
Consideration payable in cash	103,500,000	$ 103,500,000
Common stock	44,191,000
Total Consideration Paid	147,691,000
LINCO Bancshares, Inc. | Acquired Book Value
Assets
Cash and due from banks	130,561,000
Investment securities	119,234,000
Loans	838,377,000
Allowance for credit losses	(8,656,000)
Other real estate owned	8,435,000
Premises and equipment	23,440,000
Goodwill	20,503,000
Other assets	43,697,000
Total assets acquired	1,175,714,000
Liabilities
Deposits	988,329,000
Securities sold under agreements to repurchase	0
FHLB advances	26,941,000
Other borrowings	0
Lease liability	0
Other liabilities	4,498,000
Total liabilities assumed	1,019,768,000
Net assets acquired	155,946,000
LINCO Bancshares, Inc. | Fair Value Adjustments
Assets
Cash and due from banks	0
Investment securities	264,000
Loans	(9,401,000)
Allowance for credit losses	6,583,000
Other real estate owned	915,000
Premises and equipment	6,360,000
Goodwill	(15,054,000)
Other assets	2,499,000
Total assets acquired	(5,015,000)
Liabilities
Deposits	2,081,000
Securities sold under agreements to repurchase	0
FHLB advances	975,000
Other borrowings	0
Lease liability	794,000
Other liabilities	(610,000)
Total liabilities assumed	3,240,000
Net assets acquired	(8,255,000)
LINCO Bancshares, Inc. | Core Deposit Intangibles
Assets
Intangible assets	2,148,000
LINCO Bancshares, Inc. | Core Deposit Intangibles | Acquired Book Value
Assets
Intangible assets	123,000
LINCO Bancshares, Inc. | Core Deposit Intangibles | Fair Value Adjustments
Assets
Intangible assets	2,025,000
LINCO Bancshares, Inc. | Right of Use Asset
Assets
Intangible assets	794,000
LINCO Bancshares, Inc. | Right of Use Asset | Acquired Book Value
Assets
Intangible assets	0
LINCO Bancshares, Inc. | Right of Use Asset | Fair Value Adjustments
Assets
Intangible assets	$ 794,000

Business Combinations - Unaudit

Business Combinations - Unaudited Pro Forma Condensed Combined Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Combinations [Abstract]
Net interest income	$ 45,496	$ 43,717	$ 131,713	$ 127,341
Provision for loan losses	1,103	4,211	12,879	17,379
Non-interest income	16,359	15,439	53,504	48,214
Non-interest expense	36,321	36,100	124,133	113,461
Income before taxes	24,431	18,845	48,205	44,715
Income tax expense (benefit)	6,105	4,753	11,052	10,865
Net income (loss)	$ 18,326	$ 14,092	$ 37,153	$ 33,850
Earnings per share
Basic	$ 1.01	$ 0.78	$ 2.08	$ 1.88
Diluted	$ 1.01	$ 0.78	$ 2.08	$ 1.88
Basic weighted average shares o/s	18,083,126	17,990,437	17,819,619	17,972,731
Diluted weighted average shares o/s	18,136,146	18,037,345	17,872,639	18,019,639

Leases - Additional Information

Leases - Additional Information (Details)	Sep. 30, 2021
Minimum
Lessee Lease Description [Line Items]
Renewal term	1 year
Maximum
Lessee Lease Description [Line Items]
Renewal term	25 years

Leases - Summary of Supplementa

Leases - Summary of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Leases, Operating [Abstract]
Operating lease right-of-use assets	$ 16,120	$ 17,209	$ 16,703
Operating lease liabilities	$ 16,315	$ 17,351	$ 16,817
Weighted-average remaining lease term (in years)	6 years 8 months 12 days	7 years 3 months 18 days	6 years 6 months
Weighted-average discount rate	2.64%	2.85%	2.81%

Leases - Summary of Maturities

Leases - Summary of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	$ 720
2022	2,679
2023	2,356
2024	1,945
2025	1,632
Thereafter	9,193
Total lease payments	18,525
Less imputed interest	(2,210)
Operating lease liabilities	$ 16,315	$ 17,351	$ 16,817

Leases - Summary of Components

Leases - Summary of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lease, Cost [Abstract]
Operating lease cost	$ 604	$ 762	$ 2,052	$ 2,207
Short-term lease cost	11	14	96	42
Variable lease cost	373	180	622	376
Total lease cost	988	956	2,770	2,625
Income from subleases	(132)	(185)	(452)	(577)
Net lease cost	$ 856	$ 771	$ 2,318	$ 2,048

Leases - Summary of Operating L

Leases - Summary of Operating Lease Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases	$ 2,161	$ 2,092

Derivatives - Schedule of Deriv

Derivatives - Schedule of Derivative Instruments (Details) - Fair Value Hedging - Designated As Hedging Instrument - Interest Rate Swap Agreements - Other Liabilities - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, Weighted Average Remaining Maturity (Years)	7 years 7 months 6 days	8 years 3 months 18 days
Derivative Liability, Notional Amount	$ 14,057	$ 14,334
Derivative Liability, Estimated Value	$ (899)	$ (2,892)

Derivatives - Summary of Deriva

Derivatives - Summary of Derivative Instruments, Gain (Loss) (Details) - Fair Value Hedging - Interest Rate Swap Agreements - Interest Income On Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative [Line Items]
Gain (Loss) on Derivative	$ (38)	$ 38	$ (629)	$ (1,218)
Gain (Loss) on Hedged Item	$ 38	$ (38)	$ 629	$ 1,218

Derivatives - Summary of Hedged

Derivatives - Summary of Hedged Instrument (Details) $ in Thousands	Sep. 30, 2021USD ($)
Hedged Instruments [Abstract]
Carrying Amount of the Hedged Asset	$ 13,192
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset	$ 864

Derivatives - Summary of Non He

Derivatives - Summary of Non Hedge Instruments (Details) - Not Designated as Hedging Instrument - Interest Rate Swap Agreements $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Other Assets
Derivative [Line Items]
Derivative, Weighted Average Remaining Maturity (Years)	6 years 3 months 18 days
Derivative Assets, Notional Amount	$ 41,333
Derivative Assets, Estimated Value	$ 35
Other Liabilities
Derivative [Line Items]
Derivative, Weighted Average Remaining Maturity (Years)	6 years 3 months 18 days
Derivative Liability, Notional Amount	$ 41,333
Derivative Liability, Estimated Value	$ (35)