Note 2 - Liquidity and Management's Plans (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014
Net Income (Loss) Attributable to Parent		$ (4,786)	$ (3,868)
Net Cash Provided by (Used in) Operating Activities		(3,970)	(5,617)
Cash and Cash Equivalents, at Carrying Value	$ 8,310	4,340	$ 17,004	$ 23,111
Accounts Receivable, Net	2,806	2,780
Liabilities, Current	23,373	$ 19,746
Proceeds from Sale of Productive Assets	26,800
Repayments of Long-term Debt	$ 21,600