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Securities - Amortized cost and fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | $ 1,308,034 | $ 1,361,797
Unrealized Gains | 4,828 | 3,127
Unrealized Losses | (126,755) | (168,934)
Fair Value | 1,186,107 | 1,195,990
U.S. Government agencies |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 87,559 | 90,649
Unrealized Gains | 95 | 3
Unrealized Losses | (8,472) | (11,670)
Fair Value | 79,182 | 78,982
Mortgage Backed Securities - residential |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 596,918 | 630,556
Unrealized Gains | 897 | 15
Unrealized Losses | (62,313) | (89,251)
Fair Value | 535,502 | 541,320
Mortgage Backed Securities - commercial |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 12,821 | 14,182
Unrealized Gains | 2 | 2
Unrealized Losses | (313) | (523)
Fair Value | 12,510 | 13,661
Collateralized mortgage obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 176,523 | 190,552
Unrealized Gains | 74 | 29
Unrealized Losses | (22,736) | (27,555)
Fair Value | 153,861 | 163,026
State and municipal obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 394,013 | 394,696
Unrealized Gains | 834 | 171
Unrealized Losses | (29,211) | (34,539)
Fair Value | 365,636 | 360,328
Municipal taxable |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 40,200 | 41,162
Unrealized Gains | 83 | 11
Unrealized Losses | (3,710) | (5,396)
Fair Value | 36,573 | 35,777
Collateralized debt obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Unrealized Gains | 2,843 | 2,896
Fair Value | $ 2,843 | $ 2,896

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