Loans and Allowance for Credit Losses - Loan Portfolio, on Amortized Cost Basis, Aging Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 6,927,618	$ 6,006,171
Total Loans Receivable	6,934,342	6,011,374
Total Loans> 90 Days and Accruing	0	0
Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	4,832,177	4,128,101
Total Loans> 90 Days and Accruing	0	0
Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	361,748	360,687
Total Loans> 90 Days and Accruing	0	0
Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	422,537	373,408
Total Loans> 90 Days and Accruing	0	0
Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	733,869	489,854
Total Loans> 90 Days and Accruing	0	0
Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	390,847	339,482
Total Loans> 90 Days and Accruing	0	0
Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	2,923,176	2,564,670
Total Loans> 90 Days and Accruing	0	0
Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	356,814	308,275
Total Loans> 90 Days and Accruing	0	0
Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	1,502,951	1,381,598
Total Loans> 90 Days and Accruing	0	0
Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	35,478	31,918
Total Loans> 90 Days and Accruing	0	0
All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Loans Receivable	206,922	161,482
Total Loans> 90 Days and Accruing	0	0
Financial Asset, 30 to 59 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,204	6,180
Financial Asset, 30 to 59 Days Past Due \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,694	5,437
Financial Asset, 30 to 59 Days Past Due \| Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 30 to 59 Days Past Due \| Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	78	0
Financial Asset, 30 to 59 Days Past Due \| Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	515	4,725
Financial Asset, 30 to 59 Days Past Due \| Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 30 to 59 Days Past Due \| Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	3,101	712
Financial Asset, 30 to 59 Days Past Due \| Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	291	0
Financial Asset, 30 to 59 Days Past Due \| Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,070	414
Financial Asset, 30 to 59 Days Past Due \| Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	149	329
Financial Asset, 30 to 59 Days Past Due \| All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 60 to 89 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,863	2,126
Financial Asset, 60 to 89 Days Past Due \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,640	1,858
Financial Asset, 60 to 89 Days Past Due \| Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 60 to 89 Days Past Due \| Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 60 to 89 Days Past Due \| Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,431	1,630
Financial Asset, 60 to 89 Days Past Due \| Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, 60 to 89 Days Past Due \| Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	209	228
Financial Asset, 60 to 89 Days Past Due \| Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	37	19
Financial Asset, 60 to 89 Days Past Due \| Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	97	205
Financial Asset, 60 to 89 Days Past Due \| Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	89	44
Financial Asset, 60 to 89 Days Past Due \| All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	16,181	9,214
Financial Asset, Equal to or Greater than 90 Days Past Due \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	14,244	8,199
Financial Asset, Equal to or Greater than 90 Days Past Due \| Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,183	0
Financial Asset, Equal to or Greater than 90 Days Past Due \| Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,148	841
Financial Asset, Equal to or Greater than 90 Days Past Due \| Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,345	1,687
Financial Asset, Equal to or Greater than 90 Days Past Due \| Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	105	0
Financial Asset, Equal to or Greater than 90 Days Past Due \| Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	8,463	5,671
Financial Asset, Equal to or Greater than 90 Days Past Due \| Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due \| Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,892	904
Financial Asset, Equal to or Greater than 90 Days Past Due \| Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	45	111
Financial Asset, Equal to or Greater than 90 Days Past Due \| All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Total Past Due
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 25,248	$ 17,520
Percent of total loans	0.36%	0.29%
Total Past Due \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 20,578	$ 15,494
Total Past Due \| Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,183	0
Total Past Due \| Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,226	841
Total Past Due \| Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	5,291	8,042
Total Past Due \| Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	105	0
Total Past Due \| Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	11,773	6,611
Total Past Due \| Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	328	19
Total Past Due \| Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,059	1,523
Total Past Due \| Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	283	484
Total Past Due \| All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	0	0
Current
Loans Receivable Aging Analysis [Abstract]
Total Past Due	6,909,094	5,993,854
Current \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	4,811,599	4,112,607
Current \| Construction and Land Development \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	359,565	360,687
Current \| Agricultural \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	421,311	372,567
Current \| Residential Properties \| Real Estate Loan \| 1-4 Family
Loans Receivable Aging Analysis [Abstract]
Total Past Due	728,578	481,812
Current \| Residential Properties \| Real Estate Loan \| Multifamily
Loans Receivable Aging Analysis [Abstract]
Total Past Due	390,742	339,482
Current \| Commercial \| Real Estate Loan
Loans Receivable Aging Analysis [Abstract]
Total Past Due	2,911,403	2,558,059
Current \| Agricultural Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	356,486	308,256
Current \| Commercial and Industrial Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	1,498,892	1,380,075
Current \| Consumer Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	35,195	31,434
Current \| All Other Loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due	$ 206,922	$ 161,482

Loans and Allowance for Credit Losses - Loan Portfolio, on Amortized Cost Basis, Aging Analysis (Details) - USD ($)
$ in Thousands

Jun. 30, 2026

Dec. 31, 2025

Loans Receivable Aging Analysis [Abstract]

Total Past Due

$ 6,927,618

$ 6,006,171

Total Loans Receivable

6,934,342

6,011,374

Total Loans> 90 Days and Accruing

Real Estate Loan