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Loans and Allowance for Credit Losses - Credit Risk Profile of Loan Portfolio on Amortized Cost Basis Based on Risk Rating Category and Year of Origination (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Credit Quality Information [Abstract]
Current fiscal year	$ 338,407	$ 862,051
Fiscal year before current fiscal year	808,716	653,404
Two years before current fiscal year	547,076	1,261,147
Three years before current fiscal year	1,197,792	891,374
Four years before current fiscal year	879,906	546,507
Prior	1,846,541	1,377,588
Revolving Loans	80,420	80,391
Current period gross write-offs, current fiscal year	0	108
Current period gross write-offs, fiscal year before current fiscal year	2	2,369
Current period gross write-offs, two year before current fiscal year	568	625
Current period gross write-offs, three year before current fiscal year	969	602
Current period gross write-offs, four year before current fiscal year	110	69
Current period gross write-offs, prior	434	1,975
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,698,858	5,672,462
Current period gross write-offs, total loans receivables	2,083	5,748
Pass
Credit Quality Information [Abstract]
Current fiscal year	337,896	859,452
Fiscal year before current fiscal year	799,976	626,738
Two years before current fiscal year	514,430	1,245,490
Three years before current fiscal year	1,183,133	885,295
Four years before current fiscal year	870,847	542,310
Prior	1,804,957	1,340,099
Revolving Loans	79,716	79,714
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,590,955	5,579,098
Special Mention
Credit Quality Information [Abstract]
Current fiscal year	225	1,505
Fiscal year before current fiscal year	7,366	17,281
Two years before current fiscal year	25,602	6,668
Three years before current fiscal year	6,966	4,213
Four years before current fiscal year	7,075	3,488
Prior	26,625	24,634
Revolving Loans	160	59
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	74,019	57,848
Substandard
Credit Quality Information [Abstract]
Current fiscal year	286	1,094
Fiscal year before current fiscal year	1,374	9,385
Two years before current fiscal year	7,044	8,989
Three years before current fiscal year	7,693	1,866
Four years before current fiscal year	1,984	709
Prior	14,959	12,855
Revolving Loans	544	618
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	33,884	35,516
Agricultural Loans
Credit Quality Information [Abstract]
Current fiscal year	78,038	176,862
Fiscal year before current fiscal year	150,022	33,324
Two years before current fiscal year	27,422	16,332
Three years before current fiscal year	23,108	9,262
Four years before current fiscal year	14,350	1,585
Prior	3,871	2,306
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	0
Current period gross write-offs, fiscal year before current fiscal year	0	2,213
Current period gross write-offs, two year before current fiscal year	540	100
Current period gross write-offs, three year before current fiscal year	503	52
Current period gross write-offs, four year before current fiscal year	74	0
Current period gross write-offs, prior	0	45
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	296,811	239,671
Current period gross write-offs, total loans receivables	1,117	2,410
Agricultural Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	77,868	175,402
Fiscal year before current fiscal year	148,331	24,024
Two years before current fiscal year	21,178	13,147
Three years before current fiscal year	20,152	9,162
Four years before current fiscal year	13,992	1,585
Prior	3,871	2,306
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	285,392	225,626
Agricultural Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	0	617
Fiscal year before current fiscal year	590	2,208
Two years before current fiscal year	2,214	976
Three years before current fiscal year	793	100
Four years before current fiscal year	80	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	3,677	3,901
Agricultural Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	170	843
Fiscal year before current fiscal year	1,101	7,092
Two years before current fiscal year	4,030	2,209
Three years before current fiscal year	2,163	0
Four years before current fiscal year	278	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	7,742	10,144
Commercial Industrial And Other Portfolio Segment
Credit Quality Information [Abstract]
Current fiscal year	135,036	307,904
Fiscal year before current fiscal year	277,195	230,970
Two years before current fiscal year	125,503	280,911
Three years before current fiscal year	260,432	184,236
Four years before current fiscal year	191,767	132,123
Prior	479,351	369,008
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	10
Current period gross write-offs, fiscal year before current fiscal year	0	47
Current period gross write-offs, two year before current fiscal year	14	207
Current period gross write-offs, three year before current fiscal year	53	378
Current period gross write-offs, four year before current fiscal year	0	10
Current period gross write-offs, prior	156	36
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,469,284	1,505,152
Current period gross write-offs, total loans receivables	223	688
Commercial Industrial And Other Portfolio Segment | Pass
Credit Quality Information [Abstract]
Current fiscal year	135,026	307,785
Fiscal year before current fiscal year	271,202	228,411
Two years before current fiscal year	113,732	278,845
Three years before current fiscal year	258,176	183,042
Four years before current fiscal year	187,818	131,005
Prior	469,240	360,610
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,435,194	1,489,698
Commercial Industrial And Other Portfolio Segment | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	10	54
Fiscal year before current fiscal year	5,928	1,149
Two years before current fiscal year	9,491	1,277
Three years before current fiscal year	1,699	748
Four years before current fiscal year	3,643	1,020
Prior	7,516	7,583
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	28,287	11,831
Commercial Industrial And Other Portfolio Segment | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	65
Fiscal year before current fiscal year	65	1,410
Two years before current fiscal year	2,280	789
Three years before current fiscal year	557	446
Four years before current fiscal year	306	98
Prior	2,595	815
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,803	3,623
Consumer Loans
Credit Quality Information [Abstract]
Current fiscal year	1,498	5,110
Fiscal year before current fiscal year	4,226	5,159
Two years before current fiscal year	4,404	24,703
Three years before current fiscal year	21,470	12,026
Four years before current fiscal year	10,224	4,548
Prior	5,398	2,414
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	98
Current period gross write-offs, fiscal year before current fiscal year	2	63
Current period gross write-offs, two year before current fiscal year	14	154
Current period gross write-offs, three year before current fiscal year	75	139
Current period gross write-offs, four year before current fiscal year	36	59
Current period gross write-offs, prior	239	1,491
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	47,220	53,960
Current period gross write-offs, total loans receivables	366	2,004
Consumer Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	1,498	5,098
Fiscal year before current fiscal year	4,167	5,138
Two years before current fiscal year	4,376	24,430
Three years before current fiscal year	21,299	11,810
Four years before current fiscal year	10,064	4,494
Prior	5,331	2,385
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	46,735	53,355
Consumer Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	20	0
Two years before current fiscal year	0	14
Three years before current fiscal year	36	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	56	14
Consumer Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	12
Fiscal year before current fiscal year	39	21
Two years before current fiscal year	28	259
Three years before current fiscal year	135	216
Four years before current fiscal year	160	54
Prior	67	29
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	429	591
Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	3,885,543	3,873,679
Real Estate Loan | Construction and Land Development
Credit Quality Information [Abstract]
Current fiscal year	11,064	82,696
Fiscal year before current fiscal year	99,298	101,715
Two years before current fiscal year	108,605	14,396
Three years before current fiscal year	14,452	15,817
Four years before current fiscal year	15,111	4,735
Prior	20,618	16,734
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	0
Current period gross write-offs, fiscal year before current fiscal year	0	0
Current period gross write-offs, two year before current fiscal year	0	0
Current period gross write-offs, three year before current fiscal year	0	0
Current period gross write-offs, four year before current fiscal year	0	0
Current period gross write-offs, prior	0	0
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	269,148	236,093
Current period gross write-offs, total loans receivables	0	0
Real Estate Loan | Construction and Land Development | Pass
Credit Quality Information [Abstract]
Current fiscal year	11,064	82,696
Fiscal year before current fiscal year	99,298	101,715
Two years before current fiscal year	108,605	14,390
Three years before current fiscal year	14,446	15,817
Four years before current fiscal year	15,111	4,735
Prior	20,232	16,342
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	268,756	235,695
Real Estate Loan | Construction and Land Development | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	0	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	377	382
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	377	382
Real Estate Loan | Construction and Land Development | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	6
Three years before current fiscal year	6	0
Four years before current fiscal year	0	0
Prior	9	10
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	15	16
Real Estate Loan | Agricultural
Credit Quality Information [Abstract]
Current fiscal year	17,676	25,824
Fiscal year before current fiscal year	24,813	17,625
Two years before current fiscal year	16,090	160,506
Three years before current fiscal year	137,372	56,069
Four years before current fiscal year	54,129	50,455
Prior	123,333	80,281
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	0
Current period gross write-offs, fiscal year before current fiscal year		0
Current period gross write-offs, two year before current fiscal year	0	0
Current period gross write-offs, three year before current fiscal year	0	0
Current period gross write-offs, four year before current fiscal year	0	0
Current period gross write-offs, prior	0	0
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	373,413	390,760
Current period gross write-offs, total loans receivables	0	0
Real Estate Loan | Agricultural | Pass
Credit Quality Information [Abstract]
Current fiscal year	17,676	25,824
Fiscal year before current fiscal year	24,813	17,292
Two years before current fiscal year	15,902	159,433
Three years before current fiscal year	136,691	55,083
Four years before current fiscal year	53,147	48,700
Prior	115,001	73,592
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	363,230	379,924
Real Estate Loan | Agricultural | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	192
Two years before current fiscal year	188	107
Three years before current fiscal year	107	986
Four years before current fiscal year	982	1,755
Prior	7,184	5,630
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	8,461	8,670
Real Estate Loan | Agricultural | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	141
Two years before current fiscal year	0	966
Three years before current fiscal year	574	0
Four years before current fiscal year	0	0
Prior	1,148	1,059
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,722	2,166
Real Estate Loan | Commercial And Multifamily Portfolio Segment
Credit Quality Information [Abstract]
Current fiscal year	81,229	216,956
Fiscal year before current fiscal year	213,245	227,485
Two years before current fiscal year	229,384	688,599
Three years before current fiscal year	669,498	537,576
Four years before current fiscal year	519,346	290,568
Prior	1,042,141	789,045
Revolving Loans	0	0
Current period gross write-offs, current fiscal year	0	0
Current period gross write-offs, fiscal year before current fiscal year	0	0
Current period gross write-offs, two year before current fiscal year	0	151
Current period gross write-offs, three year before current fiscal year	338	0
Current period gross write-offs, four year before current fiscal year	0	0
Current period gross write-offs, prior	0	300
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,754,843	2,750,229
Current period gross write-offs, total loans receivables	338	451
Real Estate Loan | Commercial And Multifamily Portfolio Segment | Pass
Credit Quality Information [Abstract]
Current fiscal year	81,229	216,297
Fiscal year before current fiscal year	212,592	213,704
Two years before current fiscal year	215,627	680,665
Three years before current fiscal year	662,091	535,056
Four years before current fiscal year	516,834	289,855
Prior	1,027,151	774,516
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,715,524	2,710,093
Real Estate Loan | Commercial And Multifamily Portfolio Segment | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	0	659
Fiscal year before current fiscal year	653	13,732
Two years before current fiscal year	13,709	4,090
Three years before current fiscal year	4,052	2,053
Four years before current fiscal year	2,055	713
Prior	10,969	10,462
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	31,438	31,709
Real Estate Loan | Commercial And Multifamily Portfolio Segment | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	49
Two years before current fiscal year	48	3,844
Three years before current fiscal year	3,355	467
Four years before current fiscal year	457	0
Prior	4,021	4,067
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	7,881	8,427
1-4 Family | Real Estate Loan
Credit Quality Information [Abstract]
Current fiscal year	13,866	46,699
Fiscal year before current fiscal year	39,917	37,126
Two years before current fiscal year	35,668	75,700
Three years before current fiscal year	71,460	76,388
Four years before current fiscal year	74,979	62,493
Prior	171,829	117,800
Revolving Loans	80,420	80,391
Current period gross write-offs, current fiscal year	0	0
Current period gross write-offs, fiscal year before current fiscal year	0	46
Current period gross write-offs, two year before current fiscal year	0	13
Current period gross write-offs, three year before current fiscal year	0	33
Current period gross write-offs, four year before current fiscal year	0	0
Current period gross write-offs, prior	39	103
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	488,139	496,597
Current period gross write-offs, total loans receivables	39	195
1-4 Family | Real Estate Loan | Pass
Credit Quality Information [Abstract]
Current fiscal year	13,535	46,350
Fiscal year before current fiscal year	39,573	36,454
Two years before current fiscal year	35,010	74,580
Three years before current fiscal year	70,278	75,325
Four years before current fiscal year	73,881	61,936
Prior	164,131	110,348
Revolving Loans	79,716	79,714
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	476,124	484,707
1-4 Family | Real Estate Loan | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	215	175
Fiscal year before current fiscal year	175	0
Two years before current fiscal year	0	204
Three years before current fiscal year	279	326
Four years before current fiscal year	315	0
Prior	579	577
Revolving Loans	160	59
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,723	1,341
1-4 Family | Real Estate Loan | Substandard
Credit Quality Information [Abstract]
Current fiscal year	116	174
Fiscal year before current fiscal year	169	672
Two years before current fiscal year	658	916
Three years before current fiscal year	903	737
Four years before current fiscal year	783	557
Prior	7,119	6,875
Revolving Loans	544	618
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	$ 10,292	$ 10,549

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