Note 10 - Shareholders Equity (Detail) - Option Activity (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Outstanding at December 31, 2009	2,318,498	1,877,417	1,769,750
Outstanding at December 31, 2009 (in Dollars per share)	$ 2.28	$ 3.36	$ 3.63
Options Granted	120,000	1,040,000	1,115,000
Options Granted, Weighted Average Exercise Price Per Share (in Dollars per share)	$ 0.27	$ 0.84	$ 1.08
Options Cancelled	(253,915)	(591,419)	(993,583)
Options Cancelled, Weighted Average Exercise Price Per Share (in Dollars per share)	$ 2.22	$ 2.99	$ 1.68
Options Exercised		(7,500)	(13,750)
Options Exercised, Weighted Average Exercise Price Per Share (in Dollars per share)		$ 0.60	$ 0.60
Options Outstanding	2,184,583	2,318,498	1,877,417
Options Outstanding, Weighted Average Exercise Price Per Share (in Dollars per share)	$ 2.20	$ 2.28	$ 3.36
Vested and Expected to Vest at December 31, 2012	2,058,833
Vested and Expected to Vest at December 31, 2012 (in Dollars per share)	$ 2.29
Exercisable at December 31, 2012	1,494,063
Exercisable at December 31, 2012 (in Dollars per share)	$ 2.87