Share-Based and Long-Term Compensation Plans (Details) (USD $)	3 Months Ended				3 Months Ended		3 Months Ended									3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Stock Options	Dec. 31, 2013 Stock Options	Mar. 31, 2014 Restricted Stock Units (RSUs)	Dec. 31, 2013 Restricted Stock Units (RSUs)	Mar. 31, 2014 Profits Interest Units	Dec. 31, 2013 Profits Interest Units	Mar. 31, 2014 Restricted Stock	Dec. 31, 2013 Restricted Stock	Mar. 31, 2014 Deferred Incentive Share Units	Dec. 31, 2013 Deferred Incentive Share Units	Mar. 31, 2014 2013 Equity Plan	Mar. 31, 2014 2013 Equity Plan Stock Options and Stock Appreciation Right	Mar. 31, 2014 2013 Equity Plan All Other Awards	Mar. 31, 2014 2013 Equity Plan Profits Interest Units	Mar. 31, 2014 2010 Equity Plan Restricted Stock	Mar. 31, 2014 2010 Equity Plan Deferred Incentive Share Units	Mar. 31, 2014 25% per Year in the First Four Years 2013 Equity Plan Stock Options	Mar. 31, 2014 25% per Year in the First Four Years 2013 Equity Plan Restricted Stock Units (RSUs)	Mar. 31, 2014 33% per Year in the First Three Years 2013 Equity Plan Restricted Stock Units (RSUs)	Mar. 31, 2014 Performance 2013 Equity Plan Restricted Stock Units (RSUs)	Mar. 31, 2014 Minimum 2013 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares																			462,500
Number of shares authorized													3,250,000	2,000,000	1,250,000
Number of shares granted for stock options			0																1,850,000
Number of shares outstanding for stock options (in shares)			1,387,500	1,850,000
Value of shares outstanding for stock options																			$ 5,800,000
Weighted average price per share outstanding (dollars per share)			$ 4.17	$ 4.17															$ 4.17
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage																			25.00%	25.00%	33.00%
Number of units granted (in shares)	0				234,021		116,134									330,557	16,928	14,255		538,950		144,858
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares																			1,387,500
Number of units outstanding					652,642.000	449,787	330,577.000	214,443	16,928.000	27,391	14,255.000	14,880								438,950	100,000
Value of units outstanding																3,100,000	252,397	223,000		10,000,000		1,300,000
Weighted average price per unit outstanding (dollars per share)					$ 18.55	$ 17.65	$ 9.34	$ 9.79	$ 15.62	$ 15.04	$ 15.66	$ 15.67				$ 9.34	$ 15.62	$ 15.66		$ 18.55		$ 8.97
Vesting period (in years)																	4 years	4 years					3 years
Share-based compensation expense	2,500,000	89,000
Non-vested awards compensation expense not yet recognized	$ 14,600,000
Non-vested awards compensation expense recognition period	2 years