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Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Consolidated Balance Sheets |  |
Available-for-sale securities, amortized cost | $ 433,574 | $ 372,520
Loans, allowance for loan losses | $ 39,768 | $ 40,157
Common stock par value (in dollars per share) | $ 1.00 | $ 1.00
Common stock, shares authorized | 8,000,000 | 8,000,000
Common stock, shares issued | 3,546,024 | 3,545,554
Common stock, shares outstanding | 3,546,024 | 3,545,554
Common stock, unvested shares | 140,037 | 140,577

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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