Note 3 - Securities - Maturity of Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Due in one year or less, amortized cost	$ 756
Due in one year or less, fair value	766
Due after one year through five years, amortized cost	2,027
Due after one year through five years, fair value	2,069
Due after five through ten years, amortized cost	16,380
Due after five through ten years, fair value	16,589
Due after ten years, amortized cost	31,324
Due after ten years, fair value	32,187
Debt securities, amortized cost	89,379	$ 120,245
Debt securities, fair value	91,387	120,107
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Securities without maturity date, amortized cost	18,614
Securities without maturity date, fair value	19,145
Debt securities, amortized cost	18,614	40,868
Debt securities, fair value	19,145	41,075
Collateralized Mortgage Obligations [Member]
Securities without maturity date, amortized cost	20,278
Securities without maturity date, fair value	20,631
Debt securities, amortized cost	20,278	33,001
Debt securities, fair value	$ 20,631	$ 32,837

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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