Loans and Allowance for Credit Losses - Allowance for Credit Losses Based on Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	$ 70,182	$ 68,675	$ 59,093
Initial allowance on loans purchased with credit deterioration	0	0	3,791
Provision for credit loss expense	9,921	5,635	6,104
Loans charged off	7,873	5,748	2,631
Recoveries collected	2,645	1,620	2,318
Allowance for credit losses, Ending Balance	74,875	70,182	68,675
Construction and Land Development | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	3,275	2,918	2,250
Initial allowance on loans purchased with credit deterioration	0	0	308
Provision for credit loss expense	1,961	352	374
Loans charged off	107	0	14
Recoveries collected	0	5	0
Allowance for credit losses, Ending Balance	5,129	3,275	2,918
Agricultural | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,361	1,366	1,433
Initial allowance on loans purchased with credit deterioration	0	0	0
Provision for credit loss expense	(131)	(5)	(67)
Loans charged off	0	0	0
Recoveries collected	53	0	0
Allowance for credit losses, Ending Balance	1,283	1,361	1,366
Residential Properties | Real Estate Loan | 1-4 Family
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	3,579	4,220	3,742
Initial allowance on loans purchased with credit deterioration	0	0	124
Provision for credit loss expense	66	(785)	225
Loans charged off	156	195	87
Recoveries collected	264	339	216
Allowance for credit losses, Ending Balance	3,753	3,579	4,220
Commercial | Real Estate Loan
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	32,669	31,758	28,157
Initial allowance on loans purchased with credit deterioration	0	0	1,066
Provision for credit loss expense	4,003	1,178	1,755
Loans charged off	1,197	451	25
Recoveries collected	114	184	805
Allowance for credit losses, Ending Balance	35,589	32,669	31,758
Agricultural Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,957	705	585
Initial allowance on loans purchased with credit deterioration	0	0	0
Provision for credit loss expense	925	3,587	490
Loans charged off	2,503	2,410	408
Recoveries collected	1,022	75	38
Allowance for credit losses, Ending Balance	1,401	1,957	705
Commercial and Industrial Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	25,602	25,450	20,808
Initial allowance on loans purchased with credit deterioration	0	0	2,273
Provision for credit loss expense	2,582	510	2,322
Loans charged off	2,485	688	529
Recoveries collected	586	330	576
Allowance for credit losses, Ending Balance	26,285	25,602	25,450
Consumer Loans
Allowance for loan losses [Abstract]
Allowance for credit losses, Beginning Balance	1,739	2,258	2,118
Initial allowance on loans purchased with credit deterioration	0	0	20
Provision for credit loss expense	515	798	1,005
Loans charged off	1,425	2,004	1,568
Recoveries collected	606	687	683
Allowance for credit losses, Ending Balance	$ 1,435	$ 1,739	$ 2,258