v3.26.1
LHFI and ACL, LHFI - Summary of Balance in Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]            
Individually Evaluated for Credit Loss $ 7,438   $ 1,154      
Individually Evaluated for Credit Loss 46,979   24,854      
Collectively Evaluated for Credit Loss 140,751   155,917      
Collectively Evaluated for Credit Loss 13,866,044   13,649,379      
Total LHFI 13,913,023   13,674,233      
Total 148,189 $ 160,431 157,071 $ 168,237 $ 167,010 $ 160,270
Commercial and Industrial Loans [Member]            
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]            
Individually Evaluated for Credit Loss 6,045   811      
Individually Evaluated for Credit Loss 20,348   1,804      
Collectively Evaluated for Credit Loss 25,055   19,758      
Collectively Evaluated for Credit Loss 2,274,373   1,997,660      
Total LHFI 2,294,721   1,999,464      
Total 31,100 24,800 20,569 28,465 25,396 27,020
Consumer Loans [Member]            
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]            
Individually Evaluated for Credit Loss 87   103      
Individually Evaluated for Credit Loss 87   103      
Collectively Evaluated for Credit Loss 6,263   5,740      
Collectively Evaluated for Credit Loss 160,561   163,651      
Total LHFI 160,648   163,754      
Total 6,350 6,137 5,843 5,111 5,238 5,141
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 711   865      
Collectively Evaluated for Credit Loss 1,046,511   1,061,584      
Total LHFI 1,046,511   1,061,584      
Total 711 773 865 1,547 1,605 1,250
Other Commercial Loans and Leases [Member]            
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]            
Individually Evaluated for Credit Loss 204   0      
Individually Evaluated for Credit Loss 1,184   764      
Collectively Evaluated for Credit Loss 9,637   8,009      
Collectively Evaluated for Credit Loss 925,244   819,092      
Total LHFI 926,428   819,856      
Total 9,841 9,063 8,009 7,451 6,530 6,247
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 150   156      
Collectively Evaluated for Credit Loss 8,048   6,632      
Collectively Evaluated for Credit Loss 555,581   549,197      
Total LHFI 555,731   549,353      
Total 8,048 7,257 6,632 7,349 6,982 6,452
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 0   99      
Individually Evaluated for Credit Loss 931   848      
Collectively Evaluated for Credit Loss 14,762   13,485      
Collectively Evaluated for Credit Loss 720,431   703,666      
Total LHFI 721,362   704,514      
Total 14,762 14,477 13,584 12,665 12,476 11,347
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 1,102   141      
Individually Evaluated for Credit Loss 9,086   2,531      
Collectively Evaluated for Credit Loss 29,347   35,042      
Collectively Evaluated for Credit Loss 3,189,714   3,301,992      
Total LHFI 3,198,800   3,304,523      
Total 30,449 31,093 35,183 35,017 39,973 37,896
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 15,193   15,234      
Collectively Evaluated for Credit Loss 12,539   20,410      
Collectively Evaluated for Credit Loss 1,975,357   2,109,038      
Total LHFI 1,990,550   2,124,272      
Total 12,539 18,187 20,410 23,505 23,348 19,491
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 5,151   4,889      
Collectively Evaluated for Credit Loss 661,069   595,238      
Total LHFI 661,069   595,238      
Total 5,151 4,695 4,889 8,142 9,860 13,297
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 0   3,414      
Collectively Evaluated for Credit Loss 29,238   41,087      
Collectively Evaluated for Credit Loss 2,357,203   2,348,261      
Total LHFI 2,357,203   2,351,675      
Total $ 29,238 $ 43,949 $ 41,087 $ 38,985 $ 35,602 $ 32,129