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v3.25.2

Investments - Carrying value and estimated fair value (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | $ 523,679 |  | $ 536,334 |  |  |
Gross Unrealized Gains | 105 |  | 37 |  |  |
Gross Unrealized Losses | (54,430) |  | (59,258) |  |  |
Estimated Fair Value | 469,354 |  | 477,113 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Held-to-Maturity Securities |  |  |  |  |  |
Amortized Cost | 292,191 |  | 302,515 |  |  |
Gross Unrealized Gains | 53 |  | 54 |  |  |
Gross Unrealized Losses | (28,561) |  | (28,001) |  |  |
Estimated Fair Value | 263,683 |  | 274,568 |  |  |
Allowance for Credit Losses | 786 | $ 974 | 1,156 | $ 1,076 | $ 894 | $ 1,051
U.S. Treasury securities |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 9,995 |  | 9,994 |  |  |
Gross Unrealized Gains | 0 |  | 0 |  |  |
Gross Unrealized Losses | (651) |  | (936) |  |  |
Estimated Fair Value | 9,344 |  | 9,058 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
U.S. Government agencies |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 68 |  | 70 |  |  |
Gross Unrealized Gains | 0 |  | 0 |  |  |
Gross Unrealized Losses | (3) |  | (5) |  |  |
Estimated Fair Value | 65 |  | 65 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Obligations of states and political subdivisions |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 182,005 |  | 183,766 |  |  |
Gross Unrealized Gains | 11 |  | 0 |  |  |
Gross Unrealized Losses | (22,277) |  | (19,126) |  |  |
Estimated Fair Value | 159,739 |  | 164,640 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Held-to-Maturity Securities |  |  |  |  |  |
Amortized Cost | 192,202 |  | 192,156 |  |  |
Gross Unrealized Gains | 53 |  | 54 |  |  |
Gross Unrealized Losses | (20,172) |  | (17,392) |  |  |
Estimated Fair Value | 172,083 |  | 174,818 |  |  |
Allowance for Credit Losses | 12 |  | 12 |  |  |
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 77,969 |  | 76,732 |  |  |
Gross Unrealized Gains | 66 |  | 8 |  |  |
Gross Unrealized Losses | (4,041) |  | (4,438) |  |  |
Estimated Fair Value | 73,994 |  | 72,302 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Held-to-Maturity Securities |  |  |  |  |  |
Amortized Cost | 11,268 |  | 11,095 |  |  |
Gross Unrealized Gains | 0 |  | 0 |  |  |
Gross Unrealized Losses | (1,777) |  | (2,100) |  |  |
Estimated Fair Value | 9,491 |  | 8,995 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Private label mortgage and asset backed securities |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 253,182 |  | 265,302 |  |  |
Gross Unrealized Gains | 5 |  | 6 |  |  |
Gross Unrealized Losses | (27,458) |  | (34,753) |  |  |
Estimated Fair Value | 225,729 |  | 230,555 |  |  |
Allowance for Credit Losses | 0 |  | 0 |  |  |
Held-to-Maturity Securities |  |  |  |  |  |
Amortized Cost | 52,400 |  | 53,066 |  |  |
Gross Unrealized Gains | 0 |  | 0 |  |  |
Gross Unrealized Losses | (4,261) |  | (5,633) |  |  |
Estimated Fair Value | 48,139 |  | 47,433 |  |  |
Allowance for Credit Losses | 7 |  | 8 |  |  |
Corporate debt securities |  |  |  |  |  |
Available-for-Sale Securities |  |  |  |  |  |
Amortized Cost | 460 |  | 470 |  |  |
Gross Unrealized Gains | 23 |  | 23 |  |  |
Gross Unrealized Losses | 0 |  | 0 |  |  |
Estimated Fair Value | 483 |  | 493 |  |  |
Allowance for Credit Losses | 0 |  |  |  |  |
Held-to-Maturity Securities |  |  |  |  |  |
Amortized Cost | 36,321 |  | 46,198 |  |  |
Gross Unrealized Gains | 0 |  | 0 |  |  |
Gross Unrealized Losses | (2,351) |  | (2,876) |  |  |
Estimated Fair Value | 33,970 |  | 43,322 |  |  |
Allowance for Credit Losses | $ 767 |  | $ 1,136 |  |  |

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