Note 5 - Asset Impairment (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Approximation [Member] | inventories (Member)
Long-Lived Assets	$ 700,000
Approximation [Member] | Fixed Asset [Member]
Long-Lived Assets	1,854,000
Approximation [Member] | Patent [Member]
Long-Lived Assets	1,622,000
inventories (Member)
Long-Lived Assets	699,872	1,961,675
Fixed Asset [Member]
Long-Lived Assets	1,853,853	2,651,819
Patent [Member]
Long-Lived Assets	$ 1,621,970	$ 1,920,574