Note 3 - Stock-Based Compensation (Detail) - Restricted Stock Award (USD $)	3 Months Ended
	Mar. 31, 2013
Nonvested shares – December 31, 2012	113,458
Nonvested shares – December 31, 2012 (in Dollars per share)	$ 10.35	[1]
Granted	113,168
Granted (in Dollars per share)	$ 4.88	[1]
Forfeited	1,010
Forfeited (in Dollars per share)	$ 6.72	[1]
Vested	0
Vested (in Dollars per share)	$ 0	[1]
Nonvested shares – March 31, 2013	225,616
Nonvested shares – March 31, 2013 (in Dollars per share)	$ 7.62	[1]

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