Note 13 - Regulatory Capital and Oversight - Capital Amounts and Ratios (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Common equity tier 1 capital, actual amount	$ 101,791
Common equity tier 1 capital, actual percent of asset	0.1285
Common equity tier 1 capital, amount required to be adequately capitalized	$ 35,657
Common equity tier 1 capital, percent of assets required to be adequately capitalized	0.0450
Common equity tier 1 capital, excess capital amount	$ 66,134
Common equity tier 1 capital, excess capital percent of assets	0.0835
Common equity tier 1 capital, amount to be well capitalized under prompt corrective action provisions	$ 51,505
Common equity tier 1 capital, percent of assets to be well capitalized under prompt corrective action provisions	0.0650
Tier 1 leverage, actual amount	$ 101,791
Tier 1 leverage, actual percent of asset	0.0971	[1]
Tier 1 leverage, amount required to be adequately capitalized	$ 41,932
Tier 1 leverage, percent of assets required to be adequately capitalized	0.0400	[1]
Tier 1 leverage, excess capital amount	$ 59,859
Tier 1 leverage, excess capital percent of assets	0.0571	[1]
Tier 1 leverage, amount to be well capitalized under prompt corrective action provisions	$ 52,415
Tier 1 leverage, percent of assets to be well capitalized under prompt corrective action provisions	0.0500	[1]
Tier 1 risk-based capital, actual amount	$ 101,791
Tier 1 risk-based capital, actual percent of asset	0.1285
Tier 1 risk-based capital, amount required to be adequately capitalized	$ 47,543
Tier 1 risk-based capital, percent of assets required to be adequately capitalized	0.0600
Tier 1 risk-based capital, excess capital amount	$ 54,248
Tier 1 risk-based capital, excess capital percent of assets	0.0685
Tier 1 risk-based capital, amount to be well capitalized under prompt corrective action provisions	$ 63,391
Tier 1 risk-based capital, percent of assets to be well capitalized under prompt corrective action provisions	0.0800
Total risk-based capital, actual amount	$ 111,435
Total risk-based capital, actual percent of asset	0.1406
Total risk-based capital, amount required to be adequately capitalized	$ 63,391
Total risk-based capital, percent of assets required to be adequately capitalized	0.0800
Total risk-based capital, excess capital amount	$ 48,044
Total risk-based capital, excess capital percent of assets	0.0606
Total risk-based capital, amount to be well capitalized under prompt corrective action provisions	$ 79,238
Total risk-based capital, percent of assets to be well capitalized under prompt corrective action provisions	0.1000

[1] Based upon the Bank’s adjusted total assets for the purpose of the Tier 1 leverage capital ratio and risk-weighted assets for the purpose of the risk-based capital ratios.