Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Amount Held in Escrow Account [Member]
Restricted Cash and Cash Equivalents		$ 35,000
Decrease in Prepaid and Other Assets [Member] \| December 31, 2015 [Member]
Prior Period Reclassification Adjustment	$ (152,000)
Decrease in Current Portion of Long-term Debt [Member] \| December 31, 2015 [Member]
Prior Period Reclassification Adjustment	(27,000)
Decrease in Long-term Debt, Less Current Portion [Member] \| December 31, 2015 [Member]
Prior Period Reclassification Adjustment	(125,000)
Restricted Cash and Cash Equivalents			$ 99,000