Note 3 - Securities - Summary of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt securities, amortized cost	$ 181,487	$ 186,405
Debt securities, gross unrealized gains	153	1,783
Debt securities, gross unrealized losses	(15,485)	(1,918)
Debt securities, fair value	166,155	186,270
US Government-sponsored Enterprises Debt Securities [Member]
Debt securities, amortized cost	6,107	8,142
Debt securities, gross unrealized gains	0	52
Debt securities, gross unrealized losses	(560)	(35)
Debt securities, fair value	5,547	8,159
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt securities, amortized cost	11,308	12,049
Debt securities, gross unrealized gains	19	116
Debt securities, gross unrealized losses	(511)	(130)
Debt securities, fair value	10,816	12,035
Collateralized Mortgage Obligations [Member]
Debt securities, amortized cost	49,276	50,202
Debt securities, gross unrealized gains	4	92
Debt securities, gross unrealized losses	(3,255)	(804)
Debt securities, fair value	46,025	49,490
US States and Political Subdivisions Debt Securities [Member]
Debt securities, amortized cost	89,353	92,307
Debt securities, gross unrealized gains	35	1,099
Debt securities, gross unrealized losses	(10,630)	(844)
Debt securities, fair value	78,758	92,562
Corporate Debt Securities [Member]
Debt securities, amortized cost	25,443	23,705
Debt securities, gross unrealized gains	95	424
Debt securities, gross unrealized losses	(529)	(105)
Debt securities, fair value	$ 25,009	$ 24,024

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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