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Investment Securities - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | $ 1,854,852 | $ 1,727,363
Gross Unrealized/Unrecognized Holding Gains | 1,620 | 36,291
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 122,776 | 9,514
Debt Securities, Available-for-sale | 1,733,696 | 1,754,140
Obligations of States and Political Subdivisions |  |
Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 423,285 | 366,933
Gross Unrealized/Unrecognized Holding Gains | 1,620 | 22,682
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 18,194 | 24
Debt Securities, Available-for-sale | 406,711 | 389,591
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 839,399 | 849,114
Gross Unrealized/Unrecognized Holding Gains |  | 13,437
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 82,638 | 8,088
Debt Securities, Available-for-sale | 756,761 | 854,463
Corporate Debt Securities |  |
Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 17,650 | 11,250
Gross Unrealized/Unrecognized Holding Gains |  | 169
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 1,178 | 7
Debt Securities, Available-for-sale | 16,472 | 11,412
Collateralized Loan Obligations |  |
Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 535,518 | 500,066
Gross Unrealized/Unrecognized Holding Gains |  | 3
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 18,979 | 1,395
Debt Securities, Available-for-sale | 516,539 | $ 498,674
US Government-sponsored Enterprises Debt Securities |  |
Investment [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 39,000 |
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax | 1,787 |
Debt Securities, Available-for-sale | $ 37,213 |

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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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