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Investment Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 825,047 | $ 664,271
Gross Unrealized Gains | 54 | 13,138
Gross Unrealized Losses | (70,633) | (3,956)
Fair Value | 754,468 | 673,453
State and political subdivisions |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 317,376 | 359,187
Gross Unrealized Gains | 54 | 12,931
Gross Unrealized Losses | (22,304) | (990)
Fair Value | 295,126 | 371,128
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 205,175 | 170,711
Gross Unrealized Gains | 0 | 135
Gross Unrealized Losses | (31,236) | (2,200)
Fair Value | 173,939 | 168,646
Corporate bonds |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 96,348 | 84,538
Gross Unrealized Gains | 0 | 72
Gross Unrealized Losses | (11,251) | (272)
Fair Value | 85,097 | 84,338
Treasury securities |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 158,935 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (3,652) |
Fair Value | 155,283 |
Asset backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 47,213 | 49,835
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (2,190) | (494)
Fair Value | $ 45,023 | $ 49,341

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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