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Securities - Amortized cost and fair value (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | $ 1,368,520 | $ 1,412,498
Unrealized Gains | 3,341 | 4,484
Unrealized Losses | (166,110) | (157,845)
Fair Value | 1,205,751 | 1,259,137
U.S. Government agencies |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 98,999 | 102,978
Unrealized Gains | 7 | 4
Unrealized Losses | (12,076) | (11,542)
Fair Value | 86,930 | 91,440
Mortgage Backed Securities - residential |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 630,097 | 653,507
Unrealized Gains | 85 | 53
Unrealized Losses | (86,427) | (83,675)
Fair Value | 543,755 | 569,885
Mortgage Backed Securities - commercial |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 7,843 | 7,919
Unrealized Losses | (399) | (436)
Fair Value | 7,444 | 7,483
Collateralized mortgage obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 199,245 | 209,398
Unrealized Gains | 9 | 6
Unrealized Losses | (28,946) | (28,575)
Fair Value | 170,308 | 180,829
State and municipal obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 392,250 | 397,413
Unrealized Gains | 347 | 1,407
Unrealized Losses | (32,760) | (28,009)
Fair Value | 359,837 | 370,811
Municipal taxable |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 39,616 | 39,872
Unrealized Gains | 1 | 12
Unrealized Losses | (5,499) | (5,599)
Fair Value | 34,118 | 34,285
U.S. Treasury |  |
Amortized cost and fair value of investments classified as available for sale |  |
Amortized Cost | 470 | 1,411
Unrealized Losses | (3) | (9)
Fair Value | 467 | 1,402
Collateralized debt obligations |  |
Amortized cost and fair value of investments classified as available for sale |  |
Unrealized Gains | 2,892 | 3,002
Fair Value | $ 2,892 | $ 3,002

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