LHFI and ACL, LHFI - Summary of Balance in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	$ 1,154	$ 13,661
Individually Evaluated for Credit Loss	24,854	37,140
Collectively Evaluated for Credit Loss	155,917	146,609
Collectively Evaluated for Credit Loss	13,649,379	13,052,802
Total LHFI	13,674,233	13,089,942
Total	157,071	160,270	$ 139,367	$ 120,214
Commercial and Industrial Loans [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	811	10,518
Individually Evaluated for Credit Loss	1,804	22,503
Collectively Evaluated for Credit Loss	19,758	16,502
Collectively Evaluated for Credit Loss	1,997,660	1,818,219
Total LHFI	1,999,464	1,840,722
Total	20,569	27,020	26,638
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	103
Individually Evaluated for Credit Loss	103
Collectively Evaluated for Credit Loss	5,740	5,141
Collectively Evaluated for Credit Loss	163,651	156,569
Total LHFI	163,754	156,569
Total	5,843	5,141	5,794
State and Other Political Subdivision Loans [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	0	0
Individually Evaluated for Credit Loss	0	0
Collectively Evaluated for Credit Loss	865	1,250
Collectively Evaluated for Credit Loss	1,061,584	969,836
Total LHFI	1,061,584	969,836
Total	865	1,250	646
Other Commercial Loans and Leases [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	0	892
Individually Evaluated for Credit Loss	764	896
Collectively Evaluated for Credit Loss	8,009	5,355
Collectively Evaluated for Credit Loss	819,092	588,116
Total LHFI	819,856	589,012
Total	8,009	6,247	7,072
Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	0	0
Individually Evaluated for Credit Loss	156	0
Collectively Evaluated for Credit Loss	6,632	6,452
Collectively Evaluated for Credit Loss	549,197	587,244
Total LHFI	549,353	587,244
Total	6,632	6,452	17,192
Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	99
Individually Evaluated for Credit Loss	848	521
Collectively Evaluated for Credit Loss	13,485	11,347
Collectively Evaluated for Credit Loss	703,666	650,029
Total LHFI	704,514	650,550
Total	13,584	11,347	12,942
Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	141	2,251
Individually Evaluated for Credit Loss	2,531	9,783
Collectively Evaluated for Credit Loss	35,042	35,645
Collectively Evaluated for Credit Loss	3,301,992	3,523,499
Total LHFI	3,304,523	3,533,282
Total	35,183	37,896	24,043
Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	15,234	1,904
Collectively Evaluated for Credit Loss	20,410	19,491
Collectively Evaluated for Credit Loss	2,109,038	1,631,926
Total LHFI	2,124,272	1,633,830
Total	20,410	19,491	4,488
Other Loans Secured by Real Estate [Member] | Other Construction [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	0	0
Individually Evaluated for Credit Loss	0	0
Collectively Evaluated for Credit Loss	4,889	13,297
Collectively Evaluated for Credit Loss	595,238	829,904
Total LHFI	595,238	829,904
Total	4,889	13,297	5,758
Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Individually Evaluated for Credit Loss	3,414	1,533
Collectively Evaluated for Credit Loss	41,087	32,129
Collectively Evaluated for Credit Loss	2,348,261	2,297,460
Total LHFI	2,351,675	2,298,993
Total	$ 41,087	$ 32,129	$ 34,794