v3.26.1
Allowance for Credit Losses (ACL) - Disaggregated analysis of the changes in allowance for credit losses (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Allowance for credit losses            
Balance at beginning of period $ 585,882 $ 623,690 $ 465,280 $ 585,197 $ 465,280 $ 465,280
Allowance Adjustment - FMV for Independent merger   16,798     135,441  
Independent Day 1 Loan Net Charge-offs PCD   (17,259)     (56,688)  
Charge-offs       (26,176) (19,387)  
Charge-offs (11,742) (11,965)   (26,176)   (127,987)
Recoveries 3,901 4,718   7,822 7,700  
Net (charge-offs) recoveries (7,841) (24,506)   (18,354) (68,375)  
Provision (recovery) 8,623 5,064   19,821 8,729  
Balance at end of period 586,664 621,046 623,690 586,664 621,046 585,197
Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   79,971     79,971  
Unfunded Commitment            
Allowance for credit losses            
Provision (recovery) of credit losses 7,300 2,400   6,900 19,400  
Unfunded Commitment | Independent            
Allowance for credit losses            
Provision (recovery) of credit losses     12,100      
Residential Mortgage Sr.            
Allowance for credit losses            
Balance at beginning of period 58,959 54,326 42,687 55,947 42,687 42,687
Allowance Adjustment - FMV for Independent merger         1,852  
Independent Day 1 Loan Net Charge-offs PCD         (61)  
Charge-offs       (2,641) (892)  
Charge-offs (1,059) (385)        
Recoveries 79 194   128 394  
Net (charge-offs) recoveries (980) (191)   (2,513) (559)  
Provision (recovery) 7,650 69   12,195 1,314  
Balance at end of period 65,629 54,204 54,326 65,629 54,204 55,947
Residential Mortgage Sr. | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   8,910     8,910  
Residential Mortgage Jr.            
Allowance for credit losses            
Balance at beginning of period 1,384 793 432 1,356 432 432
Charge-offs         (14)  
Charge-offs   (1)        
Recoveries 4 65   97 89  
Net (charge-offs) recoveries 4 64   97 75  
Provision (recovery) (255) 11   (320) 276  
Balance at end of period 1,133 868 793 1,133 868 1,356
Residential Mortgage Jr. | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   85     85  
HELOC            
Allowance for credit losses            
Balance at beginning of period 13,766 14,868 14,845 14,150 14,845 14,845
Charge-offs       (199) (229)  
Charge-offs (78)          
Recoveries 75 125   429 505  
Net (charge-offs) recoveries (3) 125   230 276  
Provision (recovery) 322 (1,109)   (295) (1,328)  
Balance at end of period 14,085 13,884 14,868 14,085 13,884 14,150
HELOC | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   91     91  
Residential Construction            
Allowance for credit losses            
Balance at beginning of period 8,182 12,555 9,298 8,732 9,298 9,298
Provision (recovery) 1,171 (5,405)   621 (6,848)  
Balance at end of period 9,353 7,150 12,555 9,353 7,150 8,732
Residential Construction | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   4,700     4,700  
Commercial Construction and Development            
Allowance for credit losses            
Balance at beginning of period 46,541 78,541 65,553 53,494 65,553 65,553
Allowance Adjustment - FMV for Independent merger         6,448  
Charge-offs       (166) (16)  
Charge-offs   (16)        
Recoveries 314 315   368 413  
Net (charge-offs) recoveries 314 299   202 397  
Provision (recovery) 8,221 (2,543)   1,380 (7,852)  
Balance at end of period 55,076 76,297 78,541 55,076 76,297 53,494
Commercial Construction and Development | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   11,751     11,751  
Consumer            
Allowance for credit losses            
Balance at beginning of period 17,786 16,304 17,484 19,280 17,484 17,484
Allowance Adjustment - FMV for Independent merger         114  
Independent Day 1 Loan Net Charge-offs PCD         (2,323)  
Charge-offs       (4,304) (3,989)  
Charge-offs (2,171) (2,184)        
Recoveries 829 529   1,715 1,359  
Net (charge-offs) recoveries (1,342) (1,655)   (2,589) (4,953)  
Provision (recovery) 172 4,036   (75) 5,786  
Balance at end of period 16,616 18,685 16,304 16,616 18,685 19,280
Consumer | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   254     254  
Multifamily            
Allowance for credit losses            
Balance at beginning of period 55,862 33,960 22,279 58,678 22,279 22,279
Allowance Adjustment - FMV for Independent merger   16,798     20,359  
Independent Day 1 Loan Net Charge-offs PCD   (18,065)     (18,065)  
Recoveries 146     162    
Net (charge-offs) recoveries 146 (18,065)   162 (18,065)  
Provision (recovery) 3,316 18,395   484 22,710  
Balance at end of period 59,324 51,088 33,960 59,324 51,088 58,678
Multifamily | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   3,805     3,805  
Municipal            
Allowance for credit losses            
Balance at beginning of period 1,917 1,107 1,197 1,799 1,197 1,197
Provision (recovery) (98) 1,172   20 (865)  
Balance at end of period 1,819 2,279 1,107 1,819 2,279 1,799
Municipal | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   1,947     1,947  
CRE Owner Occupied            
Allowance for credit losses            
Balance at beginning of period 76,799 101,656 78,753 73,871 78,753 78,753
Allowance Adjustment - FMV for Independent merger         8,075  
Independent Day 1 Loan Net Charge-offs PCD   286     (1,016)  
Charge-offs       (371) (976)  
Charge-offs (277) (772)        
Recoveries 172 67   255 117  
Net (charge-offs) recoveries (105) (419)   (116) (1,875)  
Provision (recovery) (4,498) (13,014)   (1,559) 84  
Balance at end of period 72,196 88,223 101,656 72,196 88,223 73,871
CRE Owner Occupied | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   3,186     3,186  
Non Owner Occupied CRE            
Allowance for credit losses            
Balance at beginning of period 188,146 172,334 111,538 174,797 111,538 111,538
Allowance Adjustment - FMV for Independent merger         93,820  
Independent Day 1 Loan Net Charge-offs PCD   520     (13,036)  
Charge-offs       (969)    
Charge-offs (969)          
Recoveries 48 247   56 343  
Net (charge-offs) recoveries (921) 767   (913) (12,693)  
Provision (recovery) (8,421) (7,908)   4,920 (59,029)  
Balance at end of period 178,804 165,193 172,334 178,804 165,193 174,797
Non Owner Occupied CRE | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   31,557     31,557  
C & I            
Allowance for credit losses            
Balance at beginning of period 116,540 137,246 101,214 123,093 101,214 101,214
Allowance Adjustment - FMV for Independent merger         4,773  
Independent Day 1 Loan Net Charge-offs PCD         (22,187)  
Charge-offs       (17,526) (13,271)  
Charge-offs (7,188) (8,607)        
Recoveries 2,234 3,176   4,612 4,480  
Net (charge-offs) recoveries (4,954) (5,431)   (12,914) (30,978)  
Provision (recovery) 1,043 11,360   2,450 54,481  
Balance at end of period $ 112,629 143,175 $ 137,246 $ 112,629 143,175 $ 123,093
C & I | Initial Allowance for Non PCD loans acquired during period            
Allowance for credit losses            
Balance at end of period   $ 13,685     $ 13,685