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Investment Securities - Schedule of Continuous Unrealized Loss on AFS and HTM Securities (Details) $ in Thousands | Mar. 31, 2026 USD ($) security | Dec. 31, 2025 USD ($) security
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Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 205 | 203
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 46,440 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | (123) | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 874,550 | 931,564
Investment securities available-for-sale, 12 months or greater, unrealized losses | (78,392) | (78,645)
Investment securities available-for-sale, Estimated fair value | 920,990 | 931,564
Investment securities available-for-sale, Unrealized losses | $ (78,515) | $ (78,645)
Investment securities held-to-maturity, Number of securities | security | 211 | 212
Investment securities held-to-maturity, Less than 12 months, estimated fair value | $ 14,071 | $ 6,193
Investment securities held-to-maturity, Less than 12 months, unrealized losses | (560) | (521)
Investment securities held-to-maturity, 12 months or greater, estimated fair value | 735,184 | 762,849
Investment securities held-to-maturity, 12 months or greater, unrealized losses | (84,502) | (80,350)
Investment securities held-to-maturity, Estimated Fair Value | 749,255 | 769,042
Investment securities held-to-maturity, Unrealized losses | $ (85,062) | $ (80,871)
U.S. agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 50 | 52
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 0 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | 0 | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 315,063 | 337,708
Investment securities available-for-sale, 12 months or greater, unrealized losses | (17,318) | (17,541)
Investment securities available-for-sale, Estimated fair value | 315,063 | 337,708
Investment securities available-for-sale, Unrealized losses | $ (17,318) | $ (17,541)
Residential mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 141 | 139
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 17,423 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | (92) | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 512,563 | 546,514
Investment securities available-for-sale, 12 months or greater, unrealized losses | (58,085) | (58,188)
Investment securities available-for-sale, Estimated fair value | 529,986 | 546,514
Investment securities available-for-sale, Unrealized losses | $ (58,177) | $ (58,188)
Investment securities held-to-maturity, Number of securities | security | 135 | 136
Investment securities held-to-maturity, Less than 12 months, estimated fair value | $ 0 | $ 0
Investment securities held-to-maturity, Less than 12 months, unrealized losses | 0 | 0
Investment securities held-to-maturity, 12 months or greater, estimated fair value | 469,253 | 485,567
Investment securities held-to-maturity, 12 months or greater, unrealized losses | (62,117) | (58,836)
Investment securities held-to-maturity, Estimated Fair Value | 469,253 | 485,567
Investment securities held-to-maturity, Unrealized losses | $ (62,117) | $ (58,836)
Commercial mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 12 | 10
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 29,017 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | (31) | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 37,099 | 37,329
Investment securities available-for-sale, 12 months or greater, unrealized losses | (2,434) | (2,503)
Investment securities available-for-sale, Estimated fair value | 66,116 | 37,329
Investment securities available-for-sale, Unrealized losses | $ (2,465) | $ (2,503)
Investment securities held-to-maturity, Number of securities | security | 16 | 16
Investment securities held-to-maturity, Less than 12 months, estimated fair value | $ 4,230 | $ 4,271
Investment securities held-to-maturity, Less than 12 months, unrealized losses | (531) | (503)
Investment securities held-to-maturity, 12 months or greater, estimated fair value | 70,953 | 71,702
Investment securities held-to-maturity, 12 months or greater, unrealized losses | (9,475) | (9,284)
Investment securities held-to-maturity, Estimated Fair Value | 75,183 | 75,973
Investment securities held-to-maturity, Unrealized losses | $ (10,006) | $ (9,787)
Municipal bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 1 | 1
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 0 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | 0 | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 7,872 | 8,046
Investment securities available-for-sale, 12 months or greater, unrealized losses | (508) | (380)
Investment securities available-for-sale, Estimated fair value | 7,872 | 8,046
Investment securities available-for-sale, Unrealized losses | $ (508) | $ (380)
Investment securities held-to-maturity, Number of securities | security | 33 | 33
Investment securities held-to-maturity, Less than 12 months, estimated fair value | $ 0 | $ 0
Investment securities held-to-maturity, Less than 12 months, unrealized losses | 0 | 0
Investment securities held-to-maturity, 12 months or greater, estimated fair value | 97,592 | 98,942
Investment securities held-to-maturity, 12 months or greater, unrealized losses | (8,221) | (6,933)
Investment securities held-to-maturity, Estimated Fair Value | 97,592 | 98,942
Investment securities held-to-maturity, Unrealized losses | $ (8,221) | $ (6,933)
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment securities available-for-sale, Number of securities | security | 1 | 1
Investment securities available-for-sale, Less than 12 months, estimated fair value | $ 0 | $ 0
Investment securities available-for-sale, Less than 12 months, unrealized losses | 0 | 0
Investment securities available-for-sale, 12 months or greater, estimated fair value | 1,953 | 1,967
Investment securities available-for-sale, 12 months or greater, unrealized losses | (47) | (33)
Investment securities available-for-sale, Estimated fair value | 1,953 | 1,967
Investment securities available-for-sale, Unrealized losses | $ (47) | $ (33)
Investment securities held-to-maturity, Number of securities | security | 27 | 27
Investment securities held-to-maturity, Less than 12 months, estimated fair value | $ 9,841 | $ 1,922
Investment securities held-to-maturity, Less than 12 months, unrealized losses | (29) | (18)
Investment securities held-to-maturity, 12 months or greater, estimated fair value | 97,386 | 106,638
Investment securities held-to-maturity, 12 months or greater, unrealized losses | (4,689) | (5,297)
Investment securities held-to-maturity, Estimated Fair Value | 107,227 | 108,560
Investment securities held-to-maturity, Unrealized losses | $ (4,718) | $ (5,315)

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