Note 2 - Summary of Significant Accounting Policies (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2013
Maximum Insured Amount Per Bank Account by FDIC (in Dollars)	$ 250,000
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)			$ 293,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)	667,745	683,151
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives	3
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives	10
Building and Building Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives	22
Patents [Member]
Finite-Lived Intangible Asset, Useful Life	16 years 255 days
Land Use Right [Member]
Finite-Lived Intangible Asset, Useful Life	50 years