Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details) - Capital Amounts and Ratios - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Bank [Member]
Tier 1 (core) capital, and ratio to adjusted total assets
Tier 1 (core) capital to adjusted assets, actual, amount	$ 78,635	$ 72,076
Tier 1 (core) capital to adjusted assets, actual, ratio	12.20%	11.50%
Tier 1 (core) capital to adjusted assets, for capital adequacy, amount	$ 25,844	$ 24,966
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	$ 32,305	$ 31,208
Tier 1 (core) capital to adjusted assets, under prompt corrective action, ratio	5.00%	5.00%
Tier 1 (core) capital, and ratio to risk-weighted assets
Tier 1 (core) capital to risk-weighted assets, actual, amount	$ 78,635	$ 72,076
Tier 1 (core) capital to risk-weighted assets, actual, ratio	13.40%	13.80%
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, amount	$ 35,105	$ 20,914
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, ratio	6.00%	4.00%
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, amount	$ 46,806	$ 31,371
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, ratio	8.00%	6.00%
Total risk-based capital, and ratio to risk-weighted assets
Total risk-based capital, actual, amount	$ 84,447	$ 78,612
Total risk-based capital, actual, ratio	14.40%	15.00%
Total risk-based capital, for capital adequacy, amount	$ 46,806	$ 41,828
Total risk-based capital, for capital adequacy, ratio	8.00%	8.00%
Total risk-based capital, under prompt corrective action, amount	$ 58,508	$ 52,285
Total risk-based capital, under prompt corrective action, ratio	10.00%	10.00%
Common equity tier 1 capital ratio to risk-weighted assets
Bank	$ 78,635
Bank	13.40%
Bank	$ 26,329
Bank	4.50%
Bank	$ 38,030
Bank	6.50%
Parent Company [Member]
Tier 1 (core) capital, and ratio to adjusted total assets
Tier 1 (core) capital to adjusted assets, actual, amount		$ 76,927
Tier 1 (core) capital to adjusted assets, actual, ratio		12.30%
Tier 1 (core) capital to adjusted assets, for capital adequacy, amount		$ 25,020
Tier 1 (core) capital to adjusted assets, for capital adequacy, ratio		4.00%
Tier 1 (core) capital to adjusted assets, under prompt corrective action, amount
Tier 1 (core) capital to adjusted assets, under prompt corrective action, ratio
Tier 1 (core) capital, and ratio to risk-weighted assets
Tier 1 (core) capital to risk-weighted assets, actual, amount		$ 76,927
Tier 1 (core) capital to risk-weighted assets, actual, ratio		14.70%
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, amount		$ 20,928
Tier 1 (core) capital to risk-weighted assets, for capital adequacy, ratio		4.00%
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, amount
Tier 1 (core) capital to risk-weighted assets, under prompt corrective action, ratio
Total risk-based capital, and ratio to risk-weighted assets
Total risk-based capital, actual, amount		$ 83,463
Total risk-based capital, actual, ratio		16.00%
Total risk-based capital, for capital adequacy, amount		$ 41,856
Total risk-based capital, for capital adequacy, ratio		8.00%
Total risk-based capital, under prompt corrective action, amount
Total risk-based capital, under prompt corrective action, ratio