Note 13 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%	34.00%
Retained Earnings, Appropriated		$ 1,000,000	$ 1,000,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Bad Debt Reserve for Tax Purposes of Qualified Lender		354,000	354,000
Unrecognized Tax Benefits	$ 0	0
Cumulative Effect on Retained Earnings, Tax		$ 0	$ 0