Note 5 - Asset Impairment (Detail) - Change in Carrying Amount of Long-Lived Assets (USD $)	3 Months Ended				3 Months Ended		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 inventories (Member)	Dec. 31, 2012 inventories (Member)	Mar. 31, 2013 Fixed Asset [Member]	Dec. 31, 2012 Fixed Asset [Member]	Mar. 31, 2013 Patent [Member]	Dec. 31, 2012 Patent [Member]
Balance at			$ 699,872	$ 1,961,675	$ 1,853,853	$ 2,651,819	$ 1,621,970	$ 1,920,574
Additions			374,015				44,784
Impairment Charges	983,990	55,000	(1,635,818)		(675,065)		(308,925)
Depreciation and Amortization	$ 157,364	$ 230,322			$ (122,901)		$ (34,463)