Note 2 - Securities - Summary of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt securities, amortized cost	$ 186,405	$ 110,232
Debt securities, gross unrealized gains	1,783	2,925
Debt securities, gross unrealized losses	(1,918)	(116)
Debt securities, fair value	186,270	113,041
US Government-sponsored Enterprises Debt Securities [Member]
Debt securities, amortized cost	8,142	3,036
Debt securities, gross unrealized gains	52	11
Debt securities, gross unrealized losses	(35)	(40)
Debt securities, fair value	8,159	3,007
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt securities, amortized cost	12,049	16,151
Debt securities, gross unrealized gains	116	436
Debt securities, gross unrealized losses	(130)	(6)
Debt securities, fair value	12,035	16,581
Collateralized Mortgage Obligations [Member]
Debt securities, amortized cost	50,202	15,658
Debt securities, gross unrealized gains	92	263
Debt securities, gross unrealized losses	(804)	(10)
Debt securities, fair value	49,490	15,911
US States and Political Subdivisions Debt Securities [Member]
Debt securities, amortized cost	92,307	53,834
Debt securities, gross unrealized gains	1,099	1,781
Debt securities, gross unrealized losses	(844)	(38)
Debt securities, fair value	92,562	55,577
Corporate Debt Securities [Member]
Debt securities, amortized cost	23,705	21,553
Debt securities, gross unrealized gains	424	434
Debt securities, gross unrealized losses	(105)	(22)
Debt securities, fair value	$ 24,024	$ 21,965

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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