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Securities - Fair Value of Debt Security, Available-for-sale (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | $ 584,239 | $ 618,790
Gross unrealized gains, available for sale | 14 | 0
Gross unrealized losses, available for sale | (69,655) | (89,041)
Securities available for sale, at fair value (Note 2) | 514,598 | 529,749
U.S. Government and Federal Agency [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 0 | 0
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | 0 | 0
Securities available for sale, at fair value (Note 2) | 0 | 0
U.S. Treasury Notes and Bonds [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 90,345 | 90,810
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (10,151) | (12,606)
Securities available for sale, at fair value (Note 2) | 80,194 | 78,204
State and Municipal [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 269,918 | 277,489
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (35,236) | (47,551)
Securities available for sale, at fair value (Note 2) | 234,682 | 229,938
Mortgage-backed [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 212,392 | 236,703
Gross unrealized gains, available for sale | 14 | 0
Gross unrealized losses, available for sale | (23,905) | (28,140)
Securities available for sale, at fair value (Note 2) | 188,501 | 208,563
Corporate [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 250 | 757
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (46) | (46)
Securities available for sale, at fair value (Note 2) | 204 | 711
Asset-backed Securities [Member] |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Amortized cost, available for sale | 11,334 | 13,031
Gross unrealized gains, available for sale | 0 | 0
Gross unrealized losses, available for sale | (317) | (698)
Securities available for sale, at fair value (Note 2) | $ 11,017 | $ 12,333

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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