Note 5 - Investment Securities - Securities by Contractual Maturity (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	$ 38,451
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	33,877
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	25,926
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	23,979
Debt Securities, Available-for-sale, Amortized Cost, Total	64,377
Debt Securities, Available-for-sale, Total	$ 57,856

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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-Name Accounting Standards Codification
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