Note 2 - Stock-based Compensation (Detail) - Stock Options (USD $)	3 Months Ended
	Mar. 31, 2013
Outstanding at March 31, 2013	265,500
Outstanding at March 31, 2013 (in Dollars per share)	$ 1.78
Outstanding at March 31, 2013	6 years 292 days
Outstanding at March 31, 2013 (in Dollars)	$ 17,780
Vested and exercisable at March 31, 2013	140,833
Vested and exercisable at March 31, 2013 (in Dollars per share)	$ 1.92
Vested and exercisable at March 31, 2013	5 years 6 months
Vested and exercisable at March 31, 2013 (in Dollars)	$ 15,847