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Investment Securities - Amortized Cost and Fair Values of Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 419,009 | $ 461,162
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (68,414) | (74,957)
Estimated Fair Value | 350,595 | 386,205
ERROR in label resolution. |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 1,000 | 1,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (36) | (40)
Estimated Fair Value | 964 | 960
US States and Political Subdivisions Debt Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 25,561 | 26,643
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (2,412) | (2,865)
Estimated Fair Value | 23,149 | 23,778
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 69,502 | 75,229
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (14,435) | (14,196)
Estimated Fair Value | 55,067 | 61,033
Mortgage - Backed Securities - Commercial [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 2,190 | 4,794
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (30) | (129)
Estimated Fair Value | 2,160 | 4,665
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 1,781 | 2,008
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (175) | (224)
Estimated Fair Value | 1,606 | 1,784
Mortgage - Backed Securities - Residential [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 296,432 | 329,267
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (47,148) | (53,002)
Estimated Fair Value | 249,284 | 276,265
Other Government - Sponsored Enterprises [Member] | Obligations of U.S. Government-Sponsored Enterprises [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 22,543 | 22,221
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (4,178) | (4,501)
Estimated Fair Value | $ 18,365 | $ 17,720

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