Note 1 - Liquidity (Detail) (USD $)	0 Months Ended			3 Months Ended				3 Months Ended		3 Months Ended	0 Months Ended	3 Months Ended
	May 07, 2013	Apr. 02, 2013	Apr. 16, 2013	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013 Approximation [Member]	Mar. 31, 2013 Approximation [Member]	Mar. 31, 2013 Approximation [Member]	Apr. 08, 2013 Victory Park Capital Advisors, LLC (Member)	Mar. 31, 2013 Fixed Asset [Member]	Mar. 31, 2013 Patent [Member]	Mar. 31, 2013 Liquidity [Member]
Cash and Cash Equivalents, at Carrying Value				$ 353,223	$ 3,729,829	$ 3,813,492	$ 4,681,683		$ 353,000
Cash and Cash Equivalents, Period Increase (Decrease)				(3,460,269)	(951,854)					(3,460,000)
Net Cash Provided by (Used in) Operating Activities				(3,406,209)	(115,010)									(3,406,000)
Retained Earnings (Accumulated Deficit)				(214,648,824)		(216,627,488)			(214,649,000)
Debt, Current				79,509,000
Proceeds from Issuance of Senior Long-term Debt											750,000
Proceeds from Issuance or Sale of Equity	1,000,000			1,000,000
Impairment of Long-Lived Assets Held-for-use												675,000
Impairment of Intangible Assets, Finite-lived													309,000
Inventory Write-down				1,635,818				1,636,000
Reduction of Work Force, Percent		40.00%
Charges related to Reduction in Work Force		250,000
Proceeds from sale of assets being held as collateral by Lender			15,000,000
Carrying Value of Assets held as Collateral by Lender				$ 2,200,000