Note 3 - Securities - Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Amortized cost	$ 85,585	$ 23,538
Gross unrealized gains	185	292
Gross unrealized losses	(76)	(1)
Fair value	85,694	23,829
US States and Political Subdivisions Debt Securities [Member]
Amortized cost	76,621	402
Gross unrealized gains	8	7
Gross unrealized losses	(76)	0
Fair value	76,553	409
Certificates of Deposit [Member]
Amortized cost	2,728	15,117
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	2,728	15,117
Residential Mortgage Backed Securities [Member]
Amortized cost	4,660	5,826
Gross unrealized gains	173	282
Gross unrealized losses	0	0
Fair value	4,833	6,108
Collateralized Mortgage Backed Securities [Member]
Amortized cost	1,576	2,193
Gross unrealized gains	4	3
Gross unrealized losses	0	(1)
Fair value	$ 1,580	$ 2,195

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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