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Note 3 - Securities - Securities by Contractual Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Amortized cost, due in one year or less, available for sale securities | $ 4,002 |
Fair value, due in one year or less, available for sale securities | 4,048 |
Amortized cost, due after one year through five years, available for sale securities | 5,605 |
Fair value, due after one year through five years, available for sale securities | 5,787 |
Amortized cost, due after five years through ten years, available for sale securities | 141,804 |
Fair value, due after five years through ten years, available for sale securities | 146,716 |
Amortized cost, due after ten years, available for sale securities | 378,664 |
Fair value, due after ten years, available for sale securities | 390,191 |
Amortized cost, total securities available for sale | 530,075 | $ 435,166
Fair value, total securities available for sale | $ 546,742 | $ 435,263

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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), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27198-111563 + Details
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