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Investment Securities (Amortized Cost and Estimated Fair Values of Securities) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule of Available-for-sale Securities [Line Items] |  |
Available for sale, Amortized Cost, Total | $ 95,999 | $ 116,906
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value | 11,169 | 4,159
Held-to-Maturity, Amortized cost | 559,455 | 404,594
Held-to-maturity securities, Estimated Fair Value, Total | 494,627 | 401,524
Collateral Pledged [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available for sale, Amortized Cost, Total | 83,288 | 78,522
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value | 72,108 | 78,352
Held-to-Maturity, Amortized cost | 19,158 | 913
Held-to-maturity securities, Estimated Fair Value, Total | $ 16,305 | $ 915

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- Definition Amortized cost excluding accrued interest, before 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/2003/role/disclosureRef -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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