Note 13 - Regulatory Capital and Oversight - Capital Amounts and Ratios (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Common equity tier 1 capital, actual amount	$ 102,707
Common equity tier 1 capital, actual percent of asset	0.1136
Common equity tier 1 capital, amount required to be adequately capitalized	$ 40,688
Common equity tier 1 capital, percent of assets required to be adequately capitalized	0.0450	[1]
Common equity tier 1 capital, excess capital amount	$ 62,019
Common equity tier 1 capital, excess capital percent of assets	0.0686	[1]
Common equity tier 1 capital, amount to be well capitalized under prompt corrective action provisions	$ 58,772
Common equity tier 1 capital, percent of assets to be well capitalized under prompt corrective action provisions	0.0650
Tier 1 leverage, actual amount	$ 102,707
Tier 1 leverage, actual percent of asset	0.0925
Tier 1 leverage, amount required to be adequately capitalized	$ 44,424
Tier 1 leverage, percent of assets required to be adequately capitalized	0.0400	[1]
Tier 1 leverage, excess capital amount	$ 58,283
Tier 1 leverage, excess capital percent of assets	0.0525	[1]
Tier 1 leverage, amount to be well capitalized under prompt corrective action provisions	$ 55,531
Tier 1 leverage, percent of assets to be well capitalized under prompt corrective action provisions	0.0500
Tier 1 risk-based capital, actual amount	$ 102,707
Tier 1 risk-based capital, actual percent of asset	0.1136
Tier 1 risk-based capital, amount required to be adequately capitalized	$ 54,251
Tier 1 risk-based capital, percent of assets required to be adequately capitalized	0.0600	[1]
Tier 1 risk-based capital, excess capital amount	$ 48,456
Tier 1 risk-based capital, excess capital percent of assets	0.0536	[1]
Tier 1 risk-based capital, amount to be well capitalized under prompt corrective action provisions	$ 72,334
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	$ 114,013
Total risk-based capital, actual percent of asset	0.1261
Total risk-based capital, amount required to be adequately capitalized	$ 72,334
Total risk-based capital, percent of assets required to be adequately capitalized	0.0800	[1]
Total risk-based capital, excess capital amount	$ 41,679
Total risk-based capital, excess capital percent of assets	0.0461	[1]
Total risk-based capital, amount to be well capitalized under prompt corrective action provisions	$ 90,418
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.