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Securities - Schedule of Estimated Fair Value and Unrealized Losses for Debt Securities Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | $ 12,194 | $ 171,376
Available-for-sale, Less than 12 months, Unrealized Losses | (70) | (264)
Available-for-sale, 12 months or Longer, Estimated Fair Value | 278,479 | 451,856
Available-for-sale, 12 months or longer, Unrealized Losses | (23,128) | (26,117)
Available-for-sale, Total, Estimated Fair Value | 290,673 | 623,232
Available-for-sale, Total, Unrealized Losses | (23,198) | (26,381)
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 84,769 | 124,433
Held-to-maturity, Less than 12 months, Unrealized Losses | (604) | (1,559)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 897,090 | 849,609
Held-to-maturity, 12 months or longer, Unrealized Losses | (102,716) | (92,424)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 981,859 | 974,042
Held-to-maturity, total, unrealized losses | (103,320) | (93,983)
Total securities, Less than 12 months, Estimated Fair Value | 96,963 | 295,809
Total securities, Less than 12 months, Unrealized Losses | (674) | (1,823)
Total securities, 12 months or longer, Estimated Fair Value | 1,175,569 | 1,301,465
Total securities, 12 months or longer, Unrealized Losses | (125,844) | (118,541)
Total securities, Estimated Fair Value | 1,272,532 | 1,597,274
Total securities, Unrealized Losses | (126,518) | (120,364)
Mortgage-backed securities: |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | 0 | 169,000
Available-for-sale, Less than 12 months, Unrealized Losses | 0 | (97)
Available-for-sale, 12 months or Longer, Estimated Fair Value | 93,160 | 94,335
Available-for-sale, 12 months or longer, Unrealized Losses | (15,955) | (15,255)
Available-for-sale, Total, Estimated Fair Value | 93,160 | 263,335
Available-for-sale, Total, Unrealized Losses | (15,955) | (15,352)
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 75,575 | 114,678
Held-to-maturity, Less than 12 months, Unrealized Losses | (564) | (1,063)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 659,751 | 599,712
Held-to-maturity, 12 months or longer, Unrealized Losses | (83,762) | (74,429)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 735,326 | 714,390
Held-to-maturity, total, unrealized losses | (84,326) | (75,492)
U.S. government and agency obligations | Investment securities |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | 5,284 | 833
Available-for-sale, Less than 12 months, Unrealized Losses | (25) | (2)
Available-for-sale, 12 months or Longer, Estimated Fair Value | 49,272 | 59,861
Available-for-sale, 12 months or longer, Unrealized Losses | (5,994) | (5,794)
Available-for-sale, Total, Estimated Fair Value | 54,556 | 60,694
Available-for-sale, Total, Unrealized Losses | (6,019) | (5,796)
Corporate debt securities |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, total, unrealized losses | (2,489) | (3,941)
Corporate debt securities | Investment securities |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | 938 | 1,543
Available-for-sale, Less than 12 months, Unrealized Losses | (17) | (165)
Available-for-sale, 12 months or Longer, Estimated Fair Value | 5,817 | 6,116
Available-for-sale, 12 months or longer, Unrealized Losses | (905) | (816)
Available-for-sale, Total, Estimated Fair Value | 6,755 | 7,659
Available-for-sale, Total, Unrealized Losses | (922) | (981)
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 3,572 | 3,084
Held-to-maturity, Less than 12 months, Unrealized Losses | 0 | (473)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 57,446 | 58,386
Held-to-maturity, 12 months or longer, Unrealized Losses | (2,489) | (3,468)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 61,018 | 61,470
Held-to-maturity, total, unrealized losses | (2,489) | (3,941)
Asset-backed securities | Investment securities |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | 5,972 | 0
Available-for-sale, Less than 12 months, Unrealized Losses | (28) | 0
Available-for-sale, 12 months or Longer, Estimated Fair Value | 130,230 | 291,544
Available-for-sale, 12 months or longer, Unrealized Losses | (274) | (4,252)
Available-for-sale, Total, Estimated Fair Value | 136,202 | 291,544
Available-for-sale, Total, Unrealized Losses | (302) | (4,252)
Agency residential |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, total, unrealized losses | (77,345) | (70,040)
Agency residential | Mortgage-backed securities: |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value |  | 169,000
Available-for-sale, Less than 12 months, Unrealized Losses |  | (97)
Available-for-sale, 12 months or Longer, Estimated Fair Value |  | 0
Available-for-sale, 12 months or longer, Unrealized Losses |  | 0
Available-for-sale, Total, Estimated Fair Value |  | 169,000
Available-for-sale, Total, Unrealized Losses |  | (97)
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 66,646 | 95,776
Held-to-maturity, Less than 12 months, Unrealized Losses | (510) | (693)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 574,088 | 525,751
Held-to-maturity, 12 months or longer, Unrealized Losses | (76,835) | (69,347)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 640,734 | 621,527
Held-to-maturity, total, unrealized losses | (77,345) | (70,040)
Agency commercial |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, total, unrealized losses | (5,443) | (3,678)
Agency commercial | Mortgage-backed securities: |  |
Debt securities available-for-sale: |  |
Available-for-sale, Less than 12 months, Estimated Fair Value | 0 | 0
Available-for-sale, Less than 12 months, Unrealized Losses | 0 | 0
Available-for-sale, 12 months or Longer, Estimated Fair Value | 93,160 | 94,335
Available-for-sale, 12 months or longer, Unrealized Losses | (15,955) | (15,255)
Available-for-sale, Total, Estimated Fair Value | 93,160 | 94,335
Available-for-sale, Total, Unrealized Losses | (15,955) | (15,255)
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 8,929 | 18,902
Held-to-maturity, Less than 12 months, Unrealized Losses | (54) | (370)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 66,670 | 55,051
Held-to-maturity, 12 months or longer, Unrealized Losses | (5,389) | (3,308)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 75,599 | 73,953
Held-to-maturity, total, unrealized losses | (5,443) | (3,678)
Non-agency commercial |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, total, unrealized losses | (1,538) | (1,774)
Non-agency commercial | Mortgage-backed securities: |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 0 | 0
Held-to-maturity, Less than 12 months, Unrealized Losses | 0 | 0
Held-to-maturity, 12 months or longer, Estimated Fair Value | 18,993 | 18,910
Held-to-maturity, 12 months or longer, Unrealized Losses | (1,538) | (1,774)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 18,993 | 18,910
Held-to-maturity, total, unrealized losses | (1,538) | (1,774)
State, municipal, and sovereign debt obligations |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, total, unrealized losses | (16,505) | (14,550)
State, municipal, and sovereign debt obligations | Investment securities |  |
Debt securities held-to-maturity: |  |
Held-to-maturity, Less than 12 months, Estimated Fair Value | 5,622 | 6,671
Held-to-maturity, Less than 12 months, Unrealized Losses | (40) | (23)
Held-to-maturity, 12 months or longer, Estimated Fair Value | 179,893 | 191,511
Held-to-maturity, 12 months or longer, Unrealized Losses | (16,465) | (14,527)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1 | 185,515 | 198,182
Held-to-maturity, total, unrealized losses | $ (16,505) | $ (14,550)

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