Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) (USD $)	1 Months Ended	3 Months Ended			12 Months Ended	1 Months Ended
	Nov. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014	Oct. 31, 2013	Jul. 31, 2013
Net Income (Loss) Attributable to Parent		$ (4,842,000)	$ (4,694,000)
Working Capital		(22,900,000)
Net Cash Provided by (Used in) Operating Activities		(2,636,000)	(4,434,000)		(4,400,000)
Convertible Debt				36,000,000
Proceeds from Lines of Credit				17,500,000
Shelf Registration Value							40,000,000
Proceeds from Issuance of Common Stock	14,600,000
Stock Issued During Period, Shares, New Issues	1,435,713
Shares Issued, Price Per Share	$ 10.1751
Long-term Debt, Current Maturities		35,441,000			11,000
Term Loan [Member]
Debt Instrument, Face Amount				66,000,000
Non Convertible Secured Debt [Member]
Secured Debt				30,000,000
Senior Lender [Member] | October 2013 Additional Debt Facility [Member]
Proceeds from Issuance of Secured Debt						$ 10,000,000