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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	Jun. 30, 2025	Dec. 31, 2024
Credit Quality Information [Abstract]
Current fiscal year	$ 672,988	$ 862,051
Fiscal year before current fiscal year	740,224	653,404
Two years before current fiscal year	510,489	1,261,147
Three years before current fiscal year	1,146,686	891,374
Four years before current fiscal year	862,738	546,507
Prior	1,749,059	1,377,588
Revolving Loans	84,815	80,391
Current period gross write-offs, current fiscal year	0	108
Current period gross write-offs, fiscal year before current fiscal year	288	2,369
Current period gross write-offs, two year before current fiscal year	1,127	625
Current period gross write-offs, three year before current fiscal year	1,310	602
Current period gross write-offs, four year before current fiscal year	348	69
Current period gross write-offs, prior	1,271	1,975
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,766,999	5,672,462
Current period gross write-offs, total loans receivables	4,344	5,748
Pass
Credit Quality Information [Abstract]
Current fiscal year	670,980	859,452
Fiscal year before current fiscal year	727,128	626,738
Two years before current fiscal year	479,425	1,245,490
Three years before current fiscal year	1,122,777	885,295
Four years before current fiscal year	853,232	542,310
Prior	1,708,618	1,340,099
Revolving Loans	83,993	79,714
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,646,153	5,579,098
Special Mention
Credit Quality Information [Abstract]
Current fiscal year	1,485	1,505
Fiscal year before current fiscal year	10,850	17,281
Two years before current fiscal year	27,197	6,668
Three years before current fiscal year	16,255	4,213
Four years before current fiscal year	5,843	3,488
Prior	20,185	24,634
Revolving Loans	0	59
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	81,815	57,848
Substandard
Credit Quality Information [Abstract]
Current fiscal year	523	1,094
Fiscal year before current fiscal year	2,246	9,385
Two years before current fiscal year	3,867	8,989
Three years before current fiscal year	7,654	1,866
Four years before current fiscal year	3,663	709
Prior	20,256	12,855
Revolving Loans	822	618
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	39,031	35,516
Agricultural Loans
Credit Quality Information [Abstract]
Current fiscal year	160,189	176,862
Fiscal year before current fiscal year	87,484	33,324
Two years before current fiscal year	19,586	16,332
Three years before current fiscal year	21,554	9,262
Four years before current fiscal year	13,906	1,585
Prior	3,655	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	280	2,213
Current period gross write-offs, two year before current fiscal year	1,081	100
Current period gross write-offs, three year before current fiscal year	836	52
Current period gross write-offs, four year before current fiscal year	306	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	306,374	239,671
Current period gross write-offs, total loans receivables	2,503	2,410
Agricultural Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	158,666	175,402
Fiscal year before current fiscal year	86,034	24,024
Two years before current fiscal year	16,268	13,147
Three years before current fiscal year	20,614	9,162
Four years before current fiscal year	13,784	1,585
Prior	3,655	2,306
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	299,021	225,626
Agricultural Loans | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	1,113	617
Fiscal year before current fiscal year	1,265	2,208
Two years before current fiscal year	2,459	976
Three years before current fiscal year	927	100
Four years before current fiscal year	122	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	5,886	3,901
Agricultural Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	410	843
Fiscal year before current fiscal year	185	7,092
Two years before current fiscal year	859	2,209
Three years before current fiscal year	13	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,467	10,144
Commercial Industrial And Other Portfolio Segment
Credit Quality Information [Abstract]
Current fiscal year	252,615	307,904
Fiscal year before current fiscal year	262,522	230,970
Two years before current fiscal year	118,115	280,911
Three years before current fiscal year	233,971	184,236
Four years before current fiscal year	176,978	132,123
Prior	444,460	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	645	36
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,488,661	1,505,152
Current period gross write-offs, total loans receivables	712	688
Commercial Industrial And Other Portfolio Segment | Pass
Credit Quality Information [Abstract]
Current fiscal year	252,605	307,785
Fiscal year before current fiscal year	256,036	228,411
Two years before current fiscal year	106,096	278,845
Three years before current fiscal year	231,321	183,042
Four years before current fiscal year	172,600	131,005
Prior	434,968	360,610
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,453,626	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	6,238	1,149
Two years before current fiscal year	9,731	1,277
Three years before current fiscal year	1,571	748
Four years before current fiscal year	4,132	1,020
Prior	2,108	7,583
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	23,790	11,831
Commercial Industrial And Other Portfolio Segment | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	65
Fiscal year before current fiscal year	248	1,410
Two years before current fiscal year	2,288	789
Three years before current fiscal year	1,079	446
Four years before current fiscal year	246	98
Prior	7,384	815
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	11,245	3,623
Consumer Loans
Credit Quality Information [Abstract]
Current fiscal year	3,290	5,110
Fiscal year before current fiscal year	3,571	5,159
Two years before current fiscal year	3,771	24,703
Three years before current fiscal year	18,296	12,026
Four years before current fiscal year	8,506	4,548
Prior	4,170	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	8	63
Current period gross write-offs, two year before current fiscal year	23	154
Current period gross write-offs, three year before current fiscal year	83	139
Current period gross write-offs, four year before current fiscal year	42	59
Current period gross write-offs, prior	471	1,491
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	41,604	53,960
Current period gross write-offs, total loans receivables	627	2,004
Consumer Loans | Pass
Credit Quality Information [Abstract]
Current fiscal year	3,290	5,098
Fiscal year before current fiscal year	3,530	5,138
Two years before current fiscal year	3,750	24,430
Three years before current fiscal year	18,118	11,810
Four years before current fiscal year	8,361	4,494
Prior	4,105	2,385
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	41,154	53,355
Consumer Loans | 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	14
Three years before current fiscal year	51	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	51	14
Consumer Loans | Substandard
Credit Quality Information [Abstract]
Current fiscal year	0	12
Fiscal year before current fiscal year	41	21
Two years before current fiscal year	21	259
Three years before current fiscal year	127	216
Four years before current fiscal year	145	54
Prior	65	29
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	399	591
Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	3,930,360	3,873,679
Real Estate Loan | Construction and Land Development
Credit Quality Information [Abstract]
Current fiscal year	37,106	82,696
Fiscal year before current fiscal year	105,536	101,715
Two years before current fiscal year	108,091	14,396
Three years before current fiscal year	13,798	15,817
Four years before current fiscal year	14,984	4,735
Prior	19,297	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	298,812	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	37,106	82,696
Fiscal year before current fiscal year	105,536	101,715
Two years before current fiscal year	108,091	14,390
Three years before current fiscal year	13,793	15,817
Four years before current fiscal year	14,984	4,735
Prior	18,923	16,342
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	298,433	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	366	382
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	366	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	5	0
Four years before current fiscal year	0	0
Prior	8	10
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	13	16
Real Estate Loan | Agricultural
Credit Quality Information [Abstract]
Current fiscal year	23,519	25,824
Fiscal year before current fiscal year	24,579	17,625
Two years before current fiscal year	14,850	160,506
Three years before current fiscal year	136,357	56,069
Four years before current fiscal year	63,130	50,455
Prior	119,082	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	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	381,517	390,760
Current period gross write-offs, total loans receivables	0	0
Real Estate Loan | Agricultural | Pass
Credit Quality Information [Abstract]
Current fiscal year	23,371	25,824
Fiscal year before current fiscal year	24,379	17,292
Two years before current fiscal year	13,483	159,433
Three years before current fiscal year	134,983	55,083
Four years before current fiscal year	62,151	48,700
Prior	110,630	73,592
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	368,997	379,924
Real Estate Loan | Agricultural | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	148	0
Fiscal year before current fiscal year	200	192
Two years before current fiscal year	1,367	107
Three years before current fiscal year	800	986
Four years before current fiscal year	979	1,755
Prior	7,319	5,630
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	10,813	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	1,133	1,059
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,707	2,166
Real Estate Loan | Commercial And Multifamily Portfolio Segment
Credit Quality Information [Abstract]
Current fiscal year	160,943	216,956
Fiscal year before current fiscal year	220,010	227,485
Two years before current fiscal year	212,003	688,599
Three years before current fiscal year	653,615	537,576
Four years before current fiscal year	512,437	290,568
Prior	995,236	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	70	300
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,754,244	2,750,229
Current period gross write-offs, total loans receivables	408	451
Real Estate Loan | Commercial And Multifamily Portfolio Segment | Pass
Credit Quality Information [Abstract]
Current fiscal year	160,943	216,297
Fiscal year before current fiscal year	215,564	213,704
Two years before current fiscal year	198,315	680,665
Three years before current fiscal year	636,078	535,056
Four years before current fiscal year	509,632	289,855
Prior	980,943	774,516
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,701,475	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	2,973	13,732
Two years before current fiscal year	13,640	4,090
Three years before current fiscal year	12,635	2,053
Four years before current fiscal year	298	713
Prior	9,683	10,462
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	39,229	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	1,473	49
Two years before current fiscal year	48	3,844
Three years before current fiscal year	4,902	467
Four years before current fiscal year	2,507	0
Prior	4,610	4,067
Revolving Loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	13,540	8,427
1-4 Family | Real Estate Loan
Credit Quality Information [Abstract]
Current fiscal year	35,326	46,699
Fiscal year before current fiscal year	36,522	37,126
Two years before current fiscal year	34,073	75,700
Three years before current fiscal year	69,095	76,388
Four years before current fiscal year	72,797	62,493
Prior	163,159	117,800
Revolving Loans	84,815	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	9	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	85	103
Current period gross write-offs, revolving loans	0	0
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	495,787	496,597
Current period gross write-offs, total loans receivables	94	195
1-4 Family | Real Estate Loan | Pass
Credit Quality Information [Abstract]
Current fiscal year	34,999	46,350
Fiscal year before current fiscal year	36,049	36,454
Two years before current fiscal year	33,422	74,580
Three years before current fiscal year	67,870	75,325
Four years before current fiscal year	71,720	61,936
Prior	155,394	110,348
Revolving Loans	83,993	79,714
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	483,447	484,707
1-4 Family | Real Estate Loan | Special Mention
Credit Quality Information [Abstract]
Current fiscal year	214	175
Fiscal year before current fiscal year	174	0
Two years before current fiscal year	0	204
Three years before current fiscal year	271	326
Four years before current fiscal year	312	0
Prior	709	577
Revolving Loans	0	59
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,680	1,341
1-4 Family | Real Estate Loan | Substandard
Credit Quality Information [Abstract]
Current fiscal year	113	174
Fiscal year before current fiscal year	299	672
Two years before current fiscal year	651	916
Three years before current fiscal year	954	737
Four years before current fiscal year	765	557
Prior	7,056	6,875
Revolving Loans	822	618
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	$ 10,660	$ 10,549

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