Note 3 - Securities - Summary of Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt securities, amortized cost	$ 181,944	$ 110,232
Debt securities, gross unrealized gains	2,575	2,925
Debt securities, gross unrealized losses	(844)	(116)
Debt securities, fair value	183,675	113,041
US Government-sponsored Enterprises Debt Securities [Member]
Debt securities, amortized cost	8,147	3,036
Debt securities, gross unrealized gains	62	11
Debt securities, gross unrealized losses	0	(40)
Debt securities, fair value	8,209	3,007
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt securities, amortized cost	20,108	16,151
Debt securities, gross unrealized gains	320	436
Debt securities, gross unrealized losses	(85)	(6)
Debt securities, fair value	20,343	16,581
Collateralized Mortgage Obligations [Member]
Debt securities, amortized cost	43,883	15,658
Debt securities, gross unrealized gains	250	263
Debt securities, gross unrealized losses	(278)	(10)
Debt securities, fair value	43,855	15,911
US States and Political Subdivisions Debt Securities [Member]
Debt securities, amortized cost	86,077	53,834
Debt securities, gross unrealized gains	1,521	1,781
Debt securities, gross unrealized losses	(435)	(38)
Debt securities, fair value	87,163	55,577
Corporate Debt Securities [Member]
Debt securities, amortized cost	23,729	21,553
Debt securities, gross unrealized gains	422	434
Debt securities, gross unrealized losses	(46)	(22)
Debt securities, fair value	$ 24,105	$ 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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Amount, before tax, of unrealized loss 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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