Note 4 - Stockholders' Equity (Detail) - Summary of activities under the option plans (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Balances - Number of shares	1,680,000	1,680,000
Balances - Weighted Average exercise price (in Dollars per share)	$ 1.01	$ 1.01
Balances - Weighted average remaining contractual term	8 years 219 days	8 years 292 days
Balances - Aggregate intrinsic value (in Dollars)	$ 2,000	$ 2,200
Options cancelled and retired	0
Options cancelled and retired (in Dollars per share)	$ 0
Options cancelled and retired	0 years
Options cancelled and retired (in Dollars)	0
Options exercised	0
Options exercised (in Dollars per share)	$ 0
Options exercised	0 years
Options exercised (in Dollars)	0
Options granted	0
Options granted (in Dollars per share)	$ 0
Options granted	0 years
Options granted (in Dollars)	0
Options vested and exercisable and expected to be vested and exercisable at March 31, 2013	1,495,613
Options vested and exercisable and expected to be vested and exercisable at March 31, 2013 (in Dollars per share)	$ 1.03
Options vested and exercisable and expected to be vested and exercisable at March 31, 2013	8 years 6 months
Options vested and exercisable and expected to be vested and exercisable at March 31, 2013 (in Dollars)	2,000
Options vested and exercisable at March 31, 2013	180,000
Options vested and exercisable at March 31, 2013 (in Dollars per share)	$ 2.52
Options vested and exercisable at March 31, 2013	4 years 73 days
Options vested and exercisable at March 31, 2013 (in Dollars)	$ 2,000