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Loans and Allowance for Credit Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 5,798,324		$ 5,710,312
Less: loans held for sale	7,359		6,614
Loans and leases receivable gross excluding loans held for sale	5,790,965		5,703,698
Net deferred loan fees, premiums and discounts	31,325		37,850
Allowance for credit losses	71,160	$ 70,051	70,182	$ 68,312	$ 67,936	$ 68,675
Net loans	5,688,480		5,595,666
Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,958,442		3,906,596
Construction and Land Development | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	298,953		236,258
Allowance for credit losses	4,066	3,731	3,275	2,646	2,701	2,918
Agricultural | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	382,120		391,436
Allowance for credit losses	1,322	1,292	1,361	1,372	1,358	1,366
Commercial | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,414,993		2,442,627
Allowance for credit losses	33,258	32,214	32,669	32,918	32,537	31,758
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	305,640		239,138
Allowance for credit losses	1,767	1,649	1,957	885	778	705
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,328,315		1,340,865
Allowance for credit losses	25,618	26,028	25,602	24,931	24,631	25,450
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	41,919		54,481
Allowance for credit losses	1,513	1,593	1,739	1,980	2,153	2,258
All Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	164,008		169,232
1-4 Family | Residential Properties | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	500,771		502,243
Allowance for credit losses	3,616	$ 3,544	3,579	$ 3,580	$ 3,778	$ 4,220
Multifamily | Residential Properties | Real Estate Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 361,605		$ 334,032

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