Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (35,242)	$ 4,060	$ (34,301)	$ 9,027
Effective income tax rate (as a percent)	17.10%	38.70%	16.50%	39.40%
Goodwill, Impairment Loss	$ 209,938	$ 0	$ 209,938	$ 0
Income tax (benefit)	$ (36,800)		$ (36,800)
Effective income tax rate excluding the impact of the loss on sale and discrete items related to enacted state and local tax legislation (as a percent)	39.60%		17.50%
Federal statutory rate (as a percent)	35.00%	35.00%	35.00%	35.00%