Stock-Based Compensation (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012 Y	Mar. 31, 2011
Summary of stock option activity
Outstanding shares, beginning balance	10
Outstanding, weighted average exercise price, beginning balance	$ 5.89
Granted, shares
Granted, weighted average exercise price
Exercised, shares
Exercised, weighted average exercise price
Forfeited or expired, shares
Forfeited or expired, weighted average exercise price
Outstanding shares, ending balance	10
Outstanding, weighted average exercise price, ending balance	$ 5.89
Outstanding, weighted average remaining contractual term (in years), ending balance	1.3
Outstanding, aggregate intrinsic value, ending balance	$ 99
Vested or expected to vest, shares	10
Vested or expected to vest, weighted average exercise price	$ 5.89
Vested or expected to vest, weighted average remaining contractual term (in years)	1.3
Vested or expected to vest, aggregate intrinsic value	99
Exercisable, shares	10
Exercisable, weighted average exercise price	$ 5.89
Exercisable, weighted average remaining contractual term (in year)	1.3
Exercisable, aggregate intrinsic value	$ 99