Equity-Based Compensation Plans (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of restricted Stock activity
Number of Options, Expected to vest	1,139,228
Weighted Average Exercise Price, Expected to vest	$ 10.19
Aggregate Intrinsic Value, Expected to vest	$ 3,785,503
Restricted Stock [Member]
Summary of restricted Stock activity
Number of Shares, Beginning balance	364,650
Weighted Average Exercise Price, Beginning balance	$ 25.25
Number of Restricted Shares, Granted	338,300
Weighted Average Exercise Price, Granted	$ 11
Number of Restricted Shares, Exercised	(39,750)
Weighted Average Exercise Price, Exercised	$ 26
Number of Performance Share Units, Cancelled	(27,800)
Weighted Average Exercise Price, Cancelled	$ 14.70
Number of Share Units, Ending balance	635,400
Weighted Average Exercise Price, Ending balance	$ 18.27
Aggregate Intrinsic Value, Ending Balance	7,885,314	3,700,000	2,500,000
Number of Options, Expected to vest	602,343
Weighted Average Exercise Price, Expected to vest	$ 18.53
Aggregate Intrinsic Value, Expected to vest	$ 7,475,074