Note 14 - Fair Value - Financial Assets At Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Securities	$ 85,694	$ 23,829
US Treasury and Government [Member]
Securities	76,553
Certificates of Deposit [Member]
Securities	2,728	15,117
Residential Mortgage Backed Securities [Member]
Securities	4,833	6,108
Collateralized Mortgage Backed Securities [Member]
Securities	1,580	2,195
US States and Political Subdivisions Debt Securities [Member]
Securities	76,553	409
Fair Value, Inputs, Level 1 [Member]
Securities	76,553	0
Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member]
Securities	76,553
Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member]
Securities	0	0
Fair Value, Inputs, Level 1 [Member] | Residential Mortgage Backed Securities [Member]
Securities	0	0
Fair Value, Inputs, Level 1 [Member] | Collateralized Mortgage Backed Securities [Member]
Securities	0	0
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]
Securities		0
Fair Value, Inputs, Level 2 [Member]
Securities	9,141	23,829
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member]
Securities	0
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member]
Securities	2,728	15,117
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Securities	4,833	6,108
Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Backed Securities [Member]
Securities	1,580	2,195
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
Securities		409
Fair Value, Inputs, Level 3 [Member]
Securities	0	0
Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member]
Securities	0
Fair Value, Inputs, Level 3 [Member] | Certificates of Deposit [Member]
Securities	0	0
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage Backed Securities [Member]
Securities	0	0
Fair Value, Inputs, Level 3 [Member] | Collateralized Mortgage Backed Securities [Member]
Securities	$ 0	0
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]
Securities		$ 0