Note 10 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%	34.00%
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 0	$ 0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	85,000	187,000
Liability for Uncertain Tax Positions, Current	$ 0	$ 0