Note 3 - Stock-Based Compensation (Detail) - Restricted Stock Award (USD $)	9 Months Ended
	Sep. 30, 2012
Nonvested shares – December 31, 2011	146,624
Nonvested shares – December 31, 2011 (in Dollars per share)	$ 12.14	[1]
Granted	12,477
Granted (in Dollars per share)	$ 5.66	[1]
Forfeited	(26,915)
Forfeited (in Dollars per share)	$ 12.01	[1]
Vested	(12,010)
Vested (in Dollars per share)	$ 12.34	[1]
Nonvested shares – September 30, 2012	120,176
Nonvested shares – September 30, 2012 (in Dollars per share)	$ 11.48	[1]

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