Equity Based Compensation (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Summary of option activity for stock options
Outstanding at January 1, 2012, Shares	796,500
Granted, Shares
Exercised, Shares	(39,000)
Expired, Shares	(10,000)
Forfeited, Shares
Outstanding at September 30, 2012, Shares	747,500	796,500
Exercisable on September 30, 2012, Shares	595,827
Expected to vest September 30, 2012, Shares	145,645
Granted, Weighted Average Exercise Price
Exercised, Weighted Average Exercise Price	$ 7.81
Expired, Weighted Average Exercise Price	$ 19.95
Forfeited, Weighted Average Exercise Price
Outstanding at January 1, 2012, Weighted Average Exercise Price	$ 12.20
Outstanding at September 30, 2012, Weighted Average Exercise Price	$ 12.32	$ 12.20
Exercisable on September 30, 2012, Weighted Average Exercise Price	$ 13.34
Expected to vest September 30, 2012, Weighted Average Exercise Price	$ 8.33
Outstanding, Weighted Average Remaining Contractual Life (Yrs.)	6 years 2 months 5 days	6 years 11 months 5 days
Exercisable on September 30, 2012, Weighted Average Remaining Contractual Life (Yrs.)	5 years 8 months 5 days
Expected to vest September 30, 2012, Weighted Average Remaining Contractual Life (Yrs.)	8 years 1 month 17 days
Exercised, Aggregate Intrinsic Value	$ 245
Outstanding at September 30, 2012, Aggregate Intrinsic Value	1,633
Exercisable on September 30, 2012, Aggregate Intrinsic Value	1,185
Expected to vest September 30, 2012, Aggregate Intrinsic Value	$ 427