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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
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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)

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