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Note 7 - Capital Standards (Details Textual)
Mar. 31, 2021
Dec. 31, 2020
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum 0.065 0.065
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets 0.08 0.08
Capital Required to be Well Capitalized to Risk Weighted Assets 0.1 0.1
Tier One Leverage Capital Required to be Well Capitalized to Average Assets 0.05 0.05