Note 15 - Patents and Other Intangibles (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Asset Impairment Charges	$ 983,990	$ 55,000
Amortization of Intangible Assets	34,000	27,000
Finite-Lived Intangible Assets, Remaining Amortization Period	11
Approximation [Member] | Patent [Member]
Asset Impairment Charges	(309,000)
Patent [Member]
Asset Impairment Charges	(308,925)
Impairment charges reflected as general and administrative expenses (Member)
General and Administrative Expense		$ 144,000