Note 10 - Commitments and Contingencies (Details Textual)	1 Months Ended	12 Months Ended
	Jun. 30, 2009 USD ($)	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares
Operating Leases, Rent Expense		$ 1,071,363	$ 972,862
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares
License Payments	$ 300,000
Other Expenses		$ 94,129	$ 244,747
Loss Contingency, Pending Claims, Number		0
Settlement and Licensing Agreement [Member]
Patent Royalty Percentage Obligation		2.00%
Anticipated Annual Royalty Payments		$ 450,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares		1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 0.01
Loss Contingency, Estimate of Possible Loss		$ 300,000