Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	May 01, 2017
Net Income (Loss) Attributable to Parent	$ (7,227)	$ (8,795)
Working Capital	7,100
Net Cash Provided by (Used in) Operating Activities	$ (2,635)	$ (1,480)
Percentage of Future Quarterly Interest Payments	50.00%
Interest Payments in Stock	$ 433
Stock Issued During Period, Shares, New Issues	29,706
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 1,521
Stock Issued During Period, Shares, Conversion of Convertible Securities	212,476
Subsequent Event [Member] | Senior Secured Debt [Member]
Debt Instrument, Face Amount			$ 60,000
Debt Instrument, Amount to be Refinanced			45,000
Debt Instrument, Additional Amount after Refinance			$ 15,000