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Securities - Estimated Fair Value and Unrealized Loss for Securities Available-for-Sale and Held-to-Maturity (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Available-for-sale, Less than 12 months, Estimated Fair Value $ 184,141 $ 444,596
Available-for-sale, Less than 12 months, Unrealized Losses (11,497) (2,894)
Available-for-sale, 12 months or Longer, Estimated Fair Value 273,507 0
Available-for-sale, 12 months or longer, Unrealized Losses (34,260) 0
Available-for-sale, Total, Estimated Fair Value 457,648 444,596
Available-for-sale, Total, Unrealized Losses (45,757) (2,894)
Held-to-maturity, Less than 12 months, Estimated Fair Value 485,346 572,009
Held-to-maturity, Less than 12 months, Unrealized Losses (27,725) (8,309)
Held-to-maturity, 12 months or longer, Estimated Fair Value 538,583 55,402
Held-to-maturity, 12 months or longer, Unrealized Losses (88,042) (1,462)
Held-to-maturity, Total, Estimated Fair Value 1,023,929 627,411
Held-to-maturity, total, unrealized losses (115,767) (9,771)
Total securities, Less than 12 months, Estimated Fair Value 669,487 1,016,605
Total securities, Less than 12 months, Unrealized Losses (39,222) (11,203)
Total securities, 12 months or longer, Estimated Fair Value 812,090 55,402
Total securities, 12 months or longer, Unrealized Losses (122,302) (1,462)
Total securities, Estimated Fair Value 1,481,577 1,072,007
Total securities, Unrealized Losses (161,524) (12,665)
U.S. government and agency obligations | Investment securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Available-for-sale, Less than 12 months, Estimated Fair Value 27,232 82,395
Available-for-sale, Less than 12 months, Unrealized Losses (450) (471)
Available-for-sale, 12 months or Longer, Estimated Fair Value 52,782 0
Available-for-sale, 12 months or longer, Unrealized Losses (7,185) 0
Available-for-sale, Total, Estimated Fair Value 80,014 82,395
Available-for-sale, Total, Unrealized Losses (7,635) (471)
Corporate debt securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, total, unrealized losses (3,778) (1,279)
Corporate debt securities | Investment securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Available-for-sale, Less than 12 months, Estimated Fair Value 4,735 1,989
Available-for-sale, Less than 12 months, Unrealized Losses (193) (11)
Available-for-sale, 12 months or Longer, Estimated Fair Value 3,437 0
Available-for-sale, 12 months or longer, Unrealized Losses (563) 0
Available-for-sale, Total, Estimated Fair Value 8,172 1,989
Available-for-sale, Total, Unrealized Losses (756) (11)
Held-to-maturity, Less than 12 months, Estimated Fair Value 11,783 38,304
Held-to-maturity, Less than 12 months, Unrealized Losses (598) (1,279)
Held-to-maturity, 12 months or longer, Estimated Fair Value 36,152 0
Held-to-maturity, 12 months or longer, Unrealized Losses (3,180) 0
Held-to-maturity, Total, Estimated Fair Value 47,935 38,304
Held-to-maturity, total, unrealized losses (3,778) (1,279)
Asset-backed securities | Investment securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Available-for-sale, Less than 12 months, Estimated Fair Value 143,392 279,486
Available-for-sale, Less than 12 months, Unrealized Losses (9,179) (1,489)
Available-for-sale, 12 months or Longer, Estimated Fair Value 133,481 0
Available-for-sale, 12 months or longer, Unrealized Losses (10,170) 0
Available-for-sale, Total, Estimated Fair Value 276,873 279,486
Available-for-sale, Total, Unrealized Losses (19,349) (1,489)
Mortgage-Backed Securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, Less than 12 months, Estimated Fair Value 340,071 458,376
Held-to-maturity, Less than 12 months, Unrealized Losses (15,175) (5,967)
Held-to-maturity, 12 months or longer, Estimated Fair Value 405,296 51,019
Held-to-maturity, 12 months or longer, Unrealized Losses (71,874) (1,361)
Held-to-maturity, Total, Estimated Fair Value 745,367 509,395
Held-to-maturity, total, unrealized losses (87,049) (7,328)
Mortgage-Backed Securities | Investment securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Available-for-sale, Less than 12 months, Estimated Fair Value 8,782 80,726
Available-for-sale, Less than 12 months, Unrealized Losses (1,675) (923)
Available-for-sale, 12 months or Longer, Estimated Fair Value 83,807 0
Available-for-sale, 12 months or longer, Unrealized Losses (16,342) 0
Available-for-sale, Total, Estimated Fair Value 92,589 80,726
Available-for-sale, Total, Unrealized Losses (18,017) (923)
Mortgage-Backed Securities | Agency residential    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, Less than 12 months, Estimated Fair Value 297,296 445,399
Held-to-maturity, Less than 12 months, Unrealized Losses (12,404) (5,822)
Held-to-maturity, 12 months or longer, Estimated Fair Value 397,036 50,133
Held-to-maturity, 12 months or longer, Unrealized Losses (71,182) (1,358)
Held-to-maturity, Total, Estimated Fair Value 694,332 495,532
Held-to-maturity, total, unrealized losses (83,586) (7,180)
Mortgage-Backed Securities | Agency commercial    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, Less than 12 months, Estimated Fair Value 25,936 2,255
Held-to-maturity, Less than 12 months, Unrealized Losses (1,150) (41)
Held-to-maturity, 12 months or longer, Estimated Fair Value 2,062 886
Held-to-maturity, 12 months or longer, Unrealized Losses (39) (3)
Held-to-maturity, Total, Estimated Fair Value 27,998 3,141
Held-to-maturity, total, unrealized losses (1,189) (44)
Mortgage-Backed Securities | Non-agency commercial    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, Less than 12 months, Estimated Fair Value 16,839 10,722
Held-to-maturity, Less than 12 months, Unrealized Losses (1,621) (104)
Held-to-maturity, 12 months or longer, Estimated Fair Value 6,198 0
Held-to-maturity, 12 months or longer, Unrealized Losses (653) 0
Held-to-maturity, Total, Estimated Fair Value 23,037 10,722
Held-to-maturity, total, unrealized losses (2,274) (104)
State, municipal and sovereign debt obligations    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, total, unrealized losses (24,940) (1,164)
State, municipal and sovereign debt obligations | Investment securities    
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]    
Held-to-maturity, Less than 12 months, Estimated Fair Value 133,492 75,329
Held-to-maturity, Less than 12 months, Unrealized Losses (11,952) (1,063)
Held-to-maturity, 12 months or longer, Estimated Fair Value 97,135 4,383
Held-to-maturity, 12 months or longer, Unrealized Losses (12,988) (101)
Held-to-maturity, Total, Estimated Fair Value 230,627 79,712
Held-to-maturity, total, unrealized losses $ (24,940) $ (1,164)