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Investment Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 684,917 | $ 825,047
Gross Unrealized Gains | 4 | 54
Gross Unrealized Losses | (57,804) | (70,633)
Fair Value | 627,117 | 754,468
State and political subdivisions |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 235,297 | 317,376
Gross Unrealized Gains | 4 | 54
Gross Unrealized Losses | (16,266) | (22,304)
Fair Value | 219,035 | 295,126
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 188,307 | 205,175
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (30,508) | (31,236)
Fair Value | 157,799 | 173,939
Corporate bonds |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 111,109 | 96,348
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (8,769) | (11,251)
Fair Value | 102,340 | 85,097
Treasury securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 109,836 | 158,935
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1,115) | (3,652)
Fair Value | 108,721 | 155,283
Asset backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 40,368 | 47,213
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1,146) | (2,190)
Fair Value | $ 39,222 | $ 45,023

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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 excluding accrued interest, after allowance for credit loss, 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/2009/role/commonPracticeRef -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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