Note 3 - Stock-Based Compensation (Details) - Restricted Stock Award (USD $)	9 Months Ended
	Sep. 30, 2013
Restricted Stock Award [Abstract]
Nonvested shares – December 31, 2012	113,458
Nonvested shares – December 31, 2012 (in Dollars per share)	$ 10.35	[1]
Granted	155,212
Granted (in Dollars per share)	$ 5.18	[1]
Forfeited	(21,269)
Forfeited (in Dollars per share)	$ 8.09	[1]
Vested	(24,050)
Vested (in Dollars per share)	$ 5.41	[1]
Nonvested shares – September 30, 2013	223,351
Nonvested shares – September 30, 2013 (in Dollars per share)	$ 7.51	[1]

[1] The shares were valued at the closing price of the Company's Common Stock on the dates of the awards.