Note 3 - Securities - Maturity of Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Due in one year or less, amortized cost	$ 0
Due in one year or less, fair value	0
Due after one year through five years, amortized cost	3,297
Due after one year through five years, fair value	3,355
Due after five through ten years, amortized cost	31,589
Due after five years through ten years, fair value	32,085
Due after ten years, amortized cost	83,067
Due after ten years, fair value	84,037
Securities available-for-sale, amortized cost	181,944	$ 110,232
Securities available-for-sale, fair value	183,675	113,041
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Securities without maturity date, amortized cost	20,108
Securities without maturity date, fair value	20,343
Securities available-for-sale, amortized cost	20,108	16,151
Securities available-for-sale, fair value	20,343	16,581
Collateralized Mortgage Obligations [Member]
Securities without maturity date, amortized cost	43,883
Securities without maturity date, fair value	43,855
Securities available-for-sale, amortized cost	43,883	15,658
Securities available-for-sale, fair value	$ 43,855	$ 15,911

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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