Segments and Related Information (Reconciliation of EBITDA to Consolidated (Loss) Income from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
EBITDA Reconciliation:
EBITDA - Continuing operations	$ 53,800	$ 104,200	$ 96,600	$ 169,500
Interest expense, net	(12,907)	(12,949)	(23,880)	(24,952)
Depreciation and amortization	(43,254)	(36,755)	(85,852)	(70,249)
(Loss) income from continuing operations before income taxes	$ (2,376)	$ 54,499	$ (13,116)	$ 74,252