Note 6 - Stockholders' Equity - Activity of Stock Option Plan (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Outstanding at December 31, 2013 (in shares)	1,197,044
Outstanding at December 31, 2013 (in dollars per share)	$ 3.79
Granted (in shares)	7,500
Granted (in dollars per share)	$ 0.29
Forfeited or expired (in shares)	(231,444)
Forfeited or expired (in dollars per share)	$ 1.89
Outstanding at September 30, 2014 (in shares)	973,100
Outstanding at September 30, 2014 (in dollars per share)	$ 4.22
Exercisable at September 30, 2014 (in shares)	616,594
Exercisable at September 30, 2014 (in dollars per share)	$ 6.30