Note 2 - Stock-Based Compensation (Details) - Summary of Combined Stock Option Activity (USD $)	6 Months Ended
	Jun. 30, 2013
Summary of Combined Stock Option Activity [Abstract]
Balance, December 31, 2012	2,052,783
Balance, December 31, 2012 (in Dollars per share)	$ 4.06
Balance, June 30, 2013	1,666,729
Balance, June 30, 2013 (in Dollars per share)	$ 3.90
Granted	11,000
Granted (in Dollars per share)	$ 2.47
Exercised	0
Exercised (in Dollars per share)	$ 0
Cancelled	(397,054)
Cancelled (in Dollars per share)	$ 4.71