Note 3 - Securities - Maturity of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
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	4,607
Due after one year through five years, fair value	4,622
Due after five through ten years, amortized cost	33,443
Due after five years through ten years, fair value	32,311
Due after ten years, amortized cost	82,853
Due after ten years, fair value	72,381
Securities available-for-sale, amortized cost	181,487	$ 186,405
Securities available-for-sale, fair value	166,155	186,270
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Securities without maturity date, amortized cost	11,308
Securities without maturity date, fair value	10,816
Securities available-for-sale, amortized cost	11,308	12,049
Securities available-for-sale, fair value	10,816	12,035
Collateralized Mortgage Obligations [Member]
Securities without maturity date, amortized cost	49,276
Securities without maturity date, fair value	46,025
Securities available-for-sale, amortized cost	49,276	50,202
Securities available-for-sale, fair value	$ 46,025	$ 49,490

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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