v3.26.1
Loans and Leases Held for Investment - Schedule of Allowance for Loan and Lease Losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Allowance for Loan and Lease Losses:          
Balance, beginning of period $ 241,600 $ 234,986 $ 245,612 $ 239,360 $ 239,360
Charge-offs (161,617) (46,948) (177,714) (63,499) (75,505)
Recoveries 1,336 2,726 3,621 5,203  
Net charge-offs (160,281) (44,222) (174,093) (58,296)  
Provision 162,000 38,580 171,800 48,280  
Balance, end of period 243,319 229,344 243,319 229,344 245,612
Reserve for Unfunded Loan Commitments          
Balance, beginning of period 34,921 29,571 34,921 29,072 29,072
Provision (2,000) (350) (2,000) 149  
Balance, end of period 32,921 29,221 32,921 29,221 34,921
Total ACL, end of period 276,240 258,565 276,240 258,565  
Ending Allowance by Evaluation Methodology:          
Individually evaluated 10,566 267 10,566 267  
Collectively evaluated 232,753 229,077 232,753 229,077  
Ending Loans and Leases by Evaluation Methodology:          
Individually evaluated 201,285 164,527 201,285 164,527  
Collectively evaluated 24,009,561 24,081,366 24,009,561 24,081,366  
Total 24,210,846 24,245,893 24,210,846 24,245,893 25,032,679
Real estate mortgage          
Allowance for Loan and Lease Losses:          
Balance, beginning of period 131,514 130,116 137,401 145,754 145,754
Charge-offs (77,833) (16,080) (83,207) (21,869)  
Recoveries 90 298 892 610  
Net charge-offs (77,743) (15,782) (82,315) (21,259)  
Provision 93,250 20,611 91,935 10,450  
Balance, end of period 147,021 134,945 147,021 134,945 137,401
Reserve for Unfunded Loan Commitments          
Balance, beginning of period 913 1,206 998 1,404 1,404
Provision 20 (98) (65) (296)  
Balance, end of period 933 1,108 933 1,108 998
Total ACL, end of period 147,954 136,053 147,954 136,053  
Ending Allowance by Evaluation Methodology:          
Individually evaluated 9,867 0 9,867 0  
Collectively evaluated 137,154 134,945 137,154 134,945  
Ending Loans and Leases by Evaluation Methodology:          
Individually evaluated 172,476 160,087 172,476 160,087  
Collectively evaluated 13,104,104 13,647,721 13,104,104 13,647,721  
Total 13,276,580 13,807,808 13,276,580 13,807,808 13,750,787
Real estate construction and land          
Allowance for Loan and Lease Losses:          
Balance, beginning of period 10,395 14,125 8,849 10,940 10,940
Charge-offs (67,531) (21,536) (75,608) (21,536)  
Recoveries 0 0 0 0  
Net charge-offs (67,531) (21,536) (75,608) (21,536)  
Provision 66,400 14,474 76,023 17,659  
Balance, end of period 9,264 7,063 9,264 7,063 8,849
Reserve for Unfunded Loan Commitments          
Balance, beginning of period 8,265 3,824 8,755 4,643 4,643
Provision (609) (834) (1,099) (1,653)  
Balance, end of period 7,656 2,990 7,656 2,990 8,755
Total ACL, end of period 16,920 10,053 16,920 10,053  
Ending Allowance by Evaluation Methodology:          
Individually evaluated 0 0 0 0  
Collectively evaluated 9,264 7,063 9,264 7,063  
Ending Loans and Leases by Evaluation Methodology:          
Individually evaluated 2,385 0 2,385 0  
Collectively evaluated 1,472,466 2,302,091 1,472,466 2,302,091  
Total 1,474,851 2,302,091 1,474,851 2,302,091 1,947,627
Commercial          
Allowance for Loan and Lease Losses:          
Balance, beginning of period 86,815 75,988 86,087 67,833 67,833
Charge-offs (15,104) (8,593) (16,841) (18,175)  
Recoveries 921 2,288 2,228 4,391  
Net charge-offs (14,183) (6,305) (14,613) (13,784)  
Provision 1,636 3,647 2,794 19,281  
Balance, end of period 74,268 73,330 74,268 73,330 86,087
Reserve for Unfunded Loan Commitments          
Balance, beginning of period 25,727 24,517 25,156 23,010 23,010
Provision (1,406) 595 (835) 2,102  
Balance, end of period 24,321 25,112 24,321 25,112 25,156
Total ACL, end of period 98,589 98,442 98,589 98,442  
Ending Allowance by Evaluation Methodology:          
Individually evaluated 699 267 699 267  
Collectively evaluated 73,569 73,063 73,569 73,063  
Ending Loans and Leases by Evaluation Methodology:          
Individually evaluated 26,424 4,440 26,424 4,440  
Collectively evaluated 9,086,007 7,748,817 9,086,007 7,748,817  
Total 9,112,431 7,753,257 9,112,431 7,753,257 8,977,206
Consumer          
Allowance for Loan and Lease Losses:          
Balance, beginning of period 12,876 14,757 13,275 14,833 14,833
Charge-offs (1,149) (739) (2,058) (1,919) (4,485)
Recoveries 325 140 501 202  
Net charge-offs (824) (599) (1,557) (1,717)  
Provision 714 (152) 1,048 890  
Balance, end of period 12,766 14,006 12,766 14,006 13,275
Reserve for Unfunded Loan Commitments          
Balance, beginning of period 16 24 12 15 15
Provision (5) (13) (1) (4)  
Balance, end of period 11 11 11 11 12
Total ACL, end of period 12,777 14,017 12,777 14,017  
Ending Allowance by Evaluation Methodology:          
Individually evaluated 0 0 0 0  
Collectively evaluated 12,766 14,006 12,766 14,006  
Ending Loans and Leases by Evaluation Methodology:          
Individually evaluated 0 0 0 0  
Collectively evaluated 346,984 382,737 346,984 382,737  
Total $ 346,984 $ 382,737 $ 346,984 $ 382,737 $ 357,059