v3.26.1
CHANGE IN ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Components of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance     $ 2,738,545  
Other comprehensive income (loss) $ (8,712) $ 22,681 (17,940) $ 92,090
Amounts reclassified from accumulated other comprehensive loss (3,425) 4,637 (2,737) 10,631
Total other comprehensive (loss) income (12,137) 27,318 (20,677) 102,721
Ending balance 2,721,798   2,721,798  
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (454,087) (549,474) (445,547) (624,877)
Total other comprehensive (loss) income (12,137) 27,318 (20,677) 102,721
Ending balance (466,224) (522,156) (466,224) (522,156)
Net change in investment securities available-for-sale        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (385,270) (467,752) (376,545) (537,789)
Other comprehensive income (loss) (8,655) 22,688 (17,380) 92,725
Amounts reclassified from accumulated other comprehensive loss 0 0 0 0
Total other comprehensive (loss) income (8,655) 22,688 (17,380) 92,725
Ending balance (393,925) (445,064) (393,925) (445,064)
Net change in investment securities held-to-maturity        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (60,542) (73,217) (63,409) (76,405)
Other comprehensive income (loss) 0 0 0 0
Amounts reclassified from accumulated other comprehensive loss 2,904 3,267 5,771 6,455
Total other comprehensive (loss) income 2,904 3,267 5,771 6,455
Ending balance (57,638) (69,950) (57,638) (69,950)
Net change in defined benefit plan        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (3,099) (3,876) (2,524) (3,815)
Other comprehensive income (loss) 0 9 (488) 17
Amounts reclassified from accumulated other comprehensive loss (88) (70) (175) (139)
Total other comprehensive (loss) income (88) (61) (663) (122)
Ending balance (3,187) (3,937) (3,187) (3,937)
Net change in fair value of derivatives used for cash flow hedges        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (4,882) (4,422) (2,790) (7,297)
Other comprehensive income (loss) 0 0 0 0
Amounts reclassified from accumulated other comprehensive loss (6,241) 1,440 (8,333) 4,315
Total other comprehensive (loss) income (6,241) 1,440 (8,333) 4,315
Ending balance (11,123) (2,982) (11,123) (2,982)
Net change in equity method investments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (294) (207) (279) 429
Other comprehensive income (loss) (57) (16) (72) (652)
Amounts reclassified from accumulated other comprehensive loss 0 0 0 0
Total other comprehensive (loss) income (57) (16) (72) (652)
Ending balance $ (351) $ (223) $ (351) $ (223)