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Investment Securities - Gross unrealized losses (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($) security
Investment securities available-for-sale |  |
Number of Holdings | security | 128 | 129
Unrealized losses less than 12 months | $ (3) | $ (3)
Fair value less than 12 months | 489 | 532
Unrealized losses over 12 months | (101,460) | (98,020)
Fair value over 12 months | 471,356 | 485,527
Total Unrealized losses | (101,463) | (98,023)
Total Fair value | 471,845 | 486,059
Allowance for Credit Losses | 207 | 213
Debt security allowance for credit loss charge-offs | 0 |
Debt security allowance for credit loss recoveries | 0 |
Held to Maturity, Excluding Accrued Interest, Past Due | $ 0 | $ 0
U. S. Treasury and agencies |  |
Investment securities available-for-sale |  |
Number of Holdings | security | 1 | 1
Unrealized losses less than 12 months | $ (3) | $ (3)
Fair value less than 12 months | 454 | 489
Total Unrealized losses | (3) | (3)
Total Fair value | $ 454 | $ 489
Mortgage backed securities - Residential agency |  |
Investment securities available-for-sale |  |
Number of Holdings | security | 111 | 112
Fair value less than 12 months | $ 35 | $ 43
Unrealized losses over 12 months | (92,516) | (88,547)
Fair value over 12 months | 420,815 | 435,505
Total Unrealized losses | (92,516) | (88,547)
Total Fair value | $ 420,850 | $ 435,548
Mortgage backed securities - Commercial |  |
Investment securities available-for-sale |  |
Number of Holdings | security | 1 | 1
Unrealized losses over 12 months | $ (120) | $ (123)
Fair value over 12 months | 1,351 | 1,353
Total Unrealized losses | (120) | (123)
Total Fair value | $ 1,351 | $ 1,353
Asset backed securities |  |
Investment securities available-for-sale |  |
Number of Holdings | security | 3 | 3
Unrealized losses over 12 months | $ (1) | $ (1)
Fair value over 12 months | 22 | 25
Total Unrealized losses | (1) | (1)
Total Fair value | $ 22 | $ 25
Corporate bonds |  |
Investment securities available-for-sale |  |
Number of Holdings | security | 12 | 12
Unrealized losses over 12 months | $ (8,823) | $ (9,349)
Fair value over 12 months | 49,168 | 48,644
Total Unrealized losses | (8,823) | (9,349)
Total Fair value | $ 49,168 | $ 48,644

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