Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Jun. 30, 2015	Nov. 30, 2014	Oct. 31, 2013	Jun. 30, 2015	Mar. 31, 2013	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Jul. 31, 2013
Term Loan [Member]
Debt Instrument, Face Amount					$ 66,000
Non Convertible Secured Debt [Member]
Secured Debt					30,000
Senior Lender [Member] | October 2013 Additional Debt Facility [Member]
Proceeds from Issuance of Secured Debt			$ 10,000
Net Income (Loss) Attributable to Parent						$ (10,832)	$ (9,209)
Working Capital						27,300
Net Cash Provided by (Used in) Operating Activities						(5,348)	$ (6,557)
Convertible Debt					36,000
Proceeds from Lines of Credit					$ 17,500
Shelf Registration Value									$ 40,000
Proceeds from Issuance of Common Stock		$ 14,600
Stock Issued During Period, Shares, New Issues		1,435,713
Shares Issued, Price Per Share		$ 10.1751
Long-term Debt, Current Maturities	$ 36,194			$ 36,194		36,194		$ 11
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 117					$ 116
Stock Issued During Period, Shares, Conversion of Convertible Securities	14,600
Fair Value of Assets Acquired				$ 200