v3.25.2
Investment Securities - Schedule of Gross Unrealized Losses on Investment Securities AFS (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value $ 809,539 $ 2,979,465
Less than 12 months, gross unrealized losses (8,101) (37,202)
12 months or longer, fair value 2,894,599 2,956,231
12 months or longer, gross unrealized losses (405,715) (500,723)
Total, fair value 3,704,138 5,935,696
Total, gross unrealized losses (413,816) (537,925)
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 22,859 716,367
Less than 12 months, gross unrealized losses (2) (4,824)
12 months or longer, fair value 0 0
12 months or longer, gross unrealized losses 0 0
Total, fair value 22,859 716,367
Total, gross unrealized losses (2) (4,824)
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 29,711 29,163
12 months or longer, gross unrealized losses (284) (830)
Total, fair value 29,711 29,163
Total, gross unrealized losses (284) (830)
Mortgage-backed securities issued by U.S. Government agencies    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 305,312 716,268
Less than 12 months, gross unrealized losses (3,292) (8,431)
12 months or longer, fair value 563,032 577,468
12 months or longer, gross unrealized losses (97,916) (112,958)
Total, fair value 868,344 1,293,736
Total, gross unrealized losses (101,208) (121,389)
Mortgage-backed securities issued by U.S. Government sponsored enterprises    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 413,103 456,887
Less than 12 months, gross unrealized losses (4,210) (12,503)
12 months or longer, fair value 1,511,874 1,542,618
12 months or longer, gross unrealized losses (195,415) (248,412)
Total, fair value 1,924,977 1,999,505
Total, gross unrealized losses (199,625) (260,915)
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 0 29,040
Less than 12 months, gross unrealized losses 0 (820)
12 months or longer, fair value 506,401 521,161
12 months or longer, gross unrealized losses (88,413) (106,432)
Total, fair value 506,401 550,201
Total, gross unrealized losses (88,413) (107,252)
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value 68,265 1,060,903
Less than 12 months, gross unrealized losses (597) (10,624)
12 months or longer, fair value 283,581 276,850
12 months or longer, gross unrealized losses (23,687) (31,952)
Total, fair value 351,846 1,337,753
Total, gross unrealized losses $ (24,284) (42,576)
Corporate debt securities and other debt securities    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, fair value   0
Less than 12 months, gross unrealized losses   0
12 months or longer, fair value   8,971
12 months or longer, gross unrealized losses   (139)
Total, fair value   8,971
Total, gross unrealized losses   $ (139)