Stock-Based Compensation (Details 6) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012 Restricted Stock Units [Member]	Jun. 30, 2011 Restricted Stock Units [Member]
Summary of restricted stock unit activity
Beginning balance, Shares				10,150
Beginning balance, Weighted average grant date fair value				$ 6.28
Restricted stock awards issued			229,950	4,000
Shares awarded, Weighted Average Grant Date Fair Value				$ 7.04
Shares vested				(2,600)	(1,500)
Restricted shares vested grant date fair value				$ 6.33
Ending balance, shares				12,550
Ending balance, Weighted average grant date fair value				$ 6.58