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Note 2 - Investment Securities - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Securities available for sale, amortized cost, due in one year or less	$ 18,895
Securities available for sale, fair value, due in one year or less	18,949
Securities available for sale, amortized cost, due after one year through five years	48,810
Securities available for sale, fair value, due after one year through five years	50,327
Securities available for sale, amortized cost, due after five years through ten years	27,915
Securities available for sale, fair value, due after five years through ten years	29,154
Securities available for sale, amortized cost, due after ten years	41,316
Securities available for sale, fair value, due after ten years	43,074
Securities available for sale, amortized cost, single maturity	136,936
Securities available for sale, fair value, single maturity	141,504
Securities available for sale, amortized cost, Mortgage-backed securities and CMO	110,123
Securities available for sale, fair value, Mortgage-backed securities and CMO	111,678
Securities available for sale, amortized cost	247,059	$ 251,819
Securities available for sale, fair value	253,182	$ 254,562
Debt Securities [Member]
Securities available for sale, amortized cost	247,059
Securities available for sale, fair value	$ 253,182

X

- 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).

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