Share-Based and Long-Term Compensation Plans (Details) (USD $)	9 Months Ended				9 Months Ended		0 Months Ended	9 Months Ended									9 Months Ended			0 Months Ended	9 Months Ended			0 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Stock Options	Dec. 31, 2012 Stock Options	Sep. 30, 2013 Restricted Stock Units (RSUs)	Dec. 31, 2012 Restricted Stock Units (RSUs)	Jul. 08, 2013 Profits Interest Units	Sep. 30, 2013 Profits Interest Units	Dec. 31, 2012 Profits Interest Units	Sep. 30, 2013 Restricted Stock	Dec. 31, 2012 Restricted Stock	Sep. 30, 2013 Deferred Incentive Share Units	Dec. 31, 2012 Deferred Incentive Share Units	Sep. 30, 2013 2013 Equity Plan	Sep. 30, 2013 2013 Equity Plan Stock Options and Stock Appreciation Right	Sep. 30, 2013 2013 Equity Plan All Other Awards	Sep. 30, 2013 2013 Equity Plan Profits Interest Units	Sep. 30, 2013 2010 Equity Plan Restricted Stock	Sep. 30, 2013 2010 Equity Plan Deferred Incentive Share Units	Jul. 08, 2013 Time Restricted Stock Units (RSUs)	Sep. 30, 2013 Time 2013 Equity Plan Restricted Stock Units (RSUs)	Sep. 30, 2013 25% per Year in the First Four Years 2013 Equity Plan Stock Options	Sep. 30, 2013 25% per Year in the First Four Years 2013 Equity Plan Restricted Stock Units (RSUs)	Jul. 08, 2013 33% per Year in the First Three Years Restricted Stock Units (RSUs)	Sep. 30, 2013 33% per Year in the First Three Years 2013 Equity Plan Restricted Stock Units (RSUs)	Sep. 30, 2013 Performance 2013 Equity Plan Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized														3,250,000	2,000,000	1,250,000
Number of shares granted for stock options			1,850,000																			1,850,000
Number of shares outstanding for stock options (in shares)			1,850,000	0
Value of shares outstanding for stock options																						$ 7,700,000
Weighted average price per share outstanding (dollars per share)			$ 4.17	$ 0.00																		$ 4.17
Number of units granted (in shares)	0				274,000		100,000	214,000									214,443	30,721	15,580		215,350			100,000		58,597
Number of units outstanding					274,000	0		214,000	0	31,000	281,000	16,000	18,000										115,350		100,000
Value of units outstanding																	2,100,000	456,000	334,000		4,000,000					615,000
Weighted average price per unit outstanding (dollars per share)					$ 16.81	$ 0.00		$ 9.71	$ 0.00	$ 14.84	$ 8.34	$ 21.42	$ 25.61				$ 9.71	$ 14.84	$ 21.42		$ 18.53					$ 10.50
Vesting period (in years)																		4 years	4 years
Share-based compensation expense	3,300,000	371,000
Non-vested awards compensation expense not yet recognized	11,900,000
Value of shares granted							$ 900,000																	$ 1,800,000
Share-based compensation award vesting rights																				33% per year on each of the first, second and third anniversaries
Period of performance goals (in years)	3 years