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v3.25.3

Investment Securities - Schedule of Investment in AFS and HTM Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 1,161,644 | $ 1,408,935
Gross Unrealized Gains | 237 | 36
Gross Unrealized Losses | (88,469) | (141,545)
Allowance for Credit Losses | 0 | (22)
Estimated Fair Value | 1,073,412 | 1,267,404
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 873,617 | 939,953
Gross Unrealized Gains | 25 | 0
Gross Unrealized Losses | (86,980) | (119,571)
Estimated Fair Value | 786,662 | 820,382
Less: allowance for credit losses | (1,199) | (1,306)
Total investment securities held-to-maturity | 872,418 | 938,647
U.S. treasury bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost |  | 24,988
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | (212)
Allowance for Credit Losses |  | 0
Estimated Fair Value |  | 24,776
U.S. agency securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 432,607 | 600,277
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (20,394) | (41,742)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 412,213 | 558,535
Residential mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 644,193 | 719,815
Gross Unrealized Gains | 108 | 36
Gross Unrealized Losses | (64,701) | (94,535)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 579,600 | 625,316
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 558,842 | 605,904
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (62,442) | (85,941)
Estimated Fair Value | 496,400 | 519,963
Commercial mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 74,372 | 53,248
Gross Unrealized Gains | 129 | 0
Gross Unrealized Losses | (2,783) | (4,303)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 71,718 | 48,945
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 86,359 | 88,575
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (10,414) | (13,069)
Estimated Fair Value | 75,945 | 75,506
Municipal bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 8,472 | 8,607
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (532) | (593)
Allowance for Credit Losses | 0 | 0
Estimated Fair Value | 7,940 | 8,014
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 106,936 | 114,060
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (8,109) | (11,389)
Estimated Fair Value | 98,827 | 102,671
Corporate bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 2,000 | 2,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (59) | (160)
Allowance for Credit Losses | 0 | (22)
Estimated Fair Value | 1,941 | 1,818
Schedule of Held-to-Maturity Securities [Line Items] |  |
Amortized Cost | 121,480 | 131,414
Gross Unrealized Gains | 25 | 0
Gross Unrealized Losses | (6,015) | (9,172)
Estimated Fair Value | $ 115,490 | $ 122,242

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