Note 19 - Fair Value Measurements - Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other real estate owned, net	$ 27	$ 143
Impaired loans, net of valuation allowance		7
Fair Value, Inputs, Level 1 [Member]
Other real estate owned, net	0	0
Impaired loans, net of valuation allowance		0
Fair Value, Inputs, Level 2 [Member]
Other real estate owned, net	0	0
Impaired loans, net of valuation allowance		0
Fair Value, Inputs, Level 3 [Member]
Other real estate owned, net	$ 27	143
Impaired loans, net of valuation allowance		$ 7