Note 21 - Regulatory Matters (Details Textual)	Dec. 31, 2021	Dec. 31, 2020
Common Equity, Tier One Risk Based Capital Required to Be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.08	0.0800
Capital Required to be Well Capitalized to Risk Weighted Assets	0.10	0.1000
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	0.05	0.0500