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Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Capital Amounts and Ratios (Details) - Bank [Member] - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Tier 1 (core) capital to adjusted assets, actual, amount $ 104,480 $ 99,540
Tier 1 (core) capital to adjusted assets, actual, ratio 10.50% 10.60%
Tier 1 (core) capital to adjusted assets, for capital adequacy, amount $ 40,083 $ 37,966
Tier 1 (core) capital to adjusted assets, for capital adequacy, ratio 4.00% 4.00%
Tier 1 (core) capital to adjusted assets, under prompt corrective action, amount $ 50,103 $ 47,458
Tier 1 (core) capital to adjusted assets, under prompt corrective action, ratio 5.00% 5.00%
Tier 1 (core) capital to risk-weighted assets, actual, amount $ 104,480 $ 99,540
Tier 1 (core) capital to risk-weighted assets, actual, ratio 12.40% 11.70%
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, amount $ 50,727 $ 51,041
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, ratio 6.00% 6.00%
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, amount $ 67,636 $ 68,055
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, ratio 8.00% 8.00%
Total risk-based capital, actual, amount $ 112,088 $ 107,535
Total risk-based capital, actual, ratio 13.30% 12.60%
Total risk-based capital, for capital adequacy, amount $ 67,636 $ 68,055
Total risk-based capital, for capital adequacy, ratio 8.00% 8.00%
Total risk-based capital, under prompt corrective action, amount $ 84,545 $ 85,068
Total risk-based capital, under prompt corrective action, ratio 10.00% 10.00%
Common equity tier 1 capital to risk-weighted assets, amount $ 104,480 $ 99,540
Common equity tier 1 capital to risk-weighted assets, ratio 12.40% 11.70%
Common equity tier 1 capital to risk-weighted assets for capital adequacy, amount $ 38,045 $ 38,281
Common equity tier 1 capital to risk-weighted assets, for capital adequacy, ratio 4.50% 4.50%
Common equity tier 1 capital to risk-weighted assets, under prompt corrective action, amount $ 54,954 $ 55,294
Common equity tier 1 capital to risk-weighted assets, under prompt corrective action, ratio 6.50% 6.50%