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Securities - Securities with Unrealized Losses Aggregated by Investment Category and Time with Unrealized Loss Position (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | $ 1,812 | $ 153,118
Less than 12 months, unrealized losses | 29 | 15,751
More than 12 months, fair value | 501,940 | 375,245
More than 12 months, unrealized losses | 69,626 | 73,290
Total, fair value | 503,752 | 528,363
Total, unrealized losses | 69,655 | 89,041
U.S. Government and Federal Agency [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 0 | 0
Less than 12 months, unrealized losses | 0 | 0
More than 12 months, fair value | 0 | 0
More than 12 months, unrealized losses | 0 | 0
Total, fair value | 0 | 0
Total, unrealized losses | 0 | 0
U.S. Treasury Notes and Bonds [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 0 | 0
Less than 12 months, unrealized losses | 0 | 0
More than 12 months, fair value | 80,194 | 78,204
More than 12 months, unrealized losses | 10,151 | 12,606
Total, fair value | 80,194 | 78,204
Total, unrealized losses | 10,151 | 12,606
State and Municipal [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 557 | 89,158
Less than 12 months, unrealized losses | 6 | 12,612
More than 12 months, fair value | 234,125 | 140,390
More than 12 months, unrealized losses | 35,230 | 34,939
Total, fair value | 234,682 | 229,548
Total, unrealized losses | 35,236 | 47,551
Mortgage-backed [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 1,255 | 63,249
Less than 12 months, unrealized losses | 23 | 3,093
More than 12 months, fair value | 176,400 | 144,318
More than 12 months, unrealized losses | 23,882 | 25,047
Total, fair value | 177,655 | 207,567
Total, unrealized losses | 23,905 | 28,140
Corporate [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 0 | 711
Less than 12 months, unrealized losses | 0 | 46
More than 12 months, fair value | 204 | 0
More than 12 months, unrealized losses | 46 | 0
Total, fair value | 204 | 711
Total, unrealized losses | 46 | 46
Asset-backed Securities [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Less than 12 months, fair value | 0 | 0
Less than 12 months, unrealized losses | 0 | 0
More than 12 months, fair value | 11,017 | 12,333
More than 12 months, unrealized losses | 317 | 698
Total, fair value | 11,017 | 12,333
Total, unrealized losses | $ 317 | $ 698

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