Loans and Allowance for Credit Losses - Allowance for Credit Losses Based on Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	$ 41,910	$ 26,911	$ 26,189
Initial allowance on loans purchased with credit deterioration	2,074
Provision for credit loss expense	15,151	16,103	6,433
Loans charged off	5,634	3,844	6,326
Recoveries collected	1,154	1,068	615
Allowance for credit losses, Ending Balance	54,655	41,910	26,911
Cumulative Change in Accounting Principal, Adjustment \| ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance		1,672
Allowance for credit losses, Ending Balance			1,672
Construction and Land Development \| Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,666	1,146	561
Initial allowance on loans purchased with credit deterioration	261
Provision for credit loss expense	21	646	585
Loans charged off	205	13	0
Recoveries collected	0	0	0
Allowance for credit losses, Ending Balance	1,743	1,666	1,146
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)
Allowance for credit losses, Ending Balance			(113)
Agricultural \| Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,084	1,093	1,246
Initial allowance on loans purchased with credit deterioration	44
Provision for credit loss expense	129	(239)	(153)
Loans charged off	0	0	0
Recoveries collected	0	0	0
Allowance for credit losses, Ending Balance	1,257	1,084	1,093
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
Allowance for credit losses, Ending Balance			230
Residential Properties \| Real Estate Loan \| 1-4 Family
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	2,322	1,386	1,504
Initial allowance on loans purchased with credit deterioration	328
Provision for credit loss expense	(160)	274	1,268
Loans charged off	371	393	1,478
Recoveries collected	211	299	92
Allowance for credit losses, Ending Balance	2,330	2,322	1,386
Residential Properties \| Real Estate Loan \| Cumulative Change in Accounting Principal, Adjustment \| 1-4 Family \| ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance		756
Allowance for credit losses, Ending Balance			756
Commercial \| Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	19,660	11,198	11,102
Initial allowance on loans purchased with credit deterioration	646
Provision for credit loss expense	6,415	8,581	1,827
Loans charged off	535	829	1,743
Recoveries collected	60	169	12
Allowance for credit losses, Ending Balance	26,246	19,660	11,198
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
Allowance for credit losses, Ending Balance			541
Agricultural Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,526	1,386	951
Initial allowance on loans purchased with credit deterioration	0
Provision for credit loss expense	(544)	503	459
Loans charged off	0	0	24
Recoveries collected	1	0	0
Allowance for credit losses, Ending Balance	983	1,526	1,386
Agricultural Loans \| Cumulative Change in Accounting Principal, Adjustment \| ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance		(363)
Allowance for credit losses, Ending Balance			(363)
Commercial and Industrial Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	13,485	9,273	9,893
Initial allowance on loans purchased with credit deterioration	795
Provision for credit loss expense	7,940	5,869	1,053
Loans charged off	3,118	1,991	1,828
Recoveries collected	139	179	155
Allowance for credit losses, Ending Balance	19,241	13,485	9,273
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
Allowance for credit losses, Ending Balance			155
Consumer Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	2,167	1,429	932
Initial allowance on loans purchased with credit deterioration	0
Provision for credit loss expense	1,350	469	1,394
Loans charged off	1,405	618	1,253
Recoveries collected	743	421	356
Allowance for credit losses, Ending Balance	$ 2,855	2,167	1,429
Consumer Loans \| Cumulative Change in Accounting Principal, Adjustment \| ASU 2016-13
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance		$ 466
Allowance for credit losses, Ending Balance			$ 466

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Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

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