Note 10 - Income Taxes (Detail) - Effective income tax rate reconcilliation (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Expected provision at federal statutory tax rate (34%)	$ 136,031	$ 1,627,798
State taxes, net of federal benefit	(12,887)	50,887
Stock-based compensation expense	(112,008)	(297,471)
Domestic production activities deduction	(16,298)	(145,453)
Capital loss carryforward	104,138	(85,384)
Federal research & development credit	(98,726)	(169,172)
Other permanent differences	(35,744)	27,312
Income tax expense (benefit)	$ (35,494)	$ 1,008,517