Segments and Related Information (Reconciliation of EBITDA to Consolidated (Loss) Income from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
EBITDA Reconciliation:
EBITDA - Continuing operations	$ 150,000	$ 403,700	$ 427,600
Interest expense, net	(48,055)	(50,769)	(46,442)
Depreciation and amortization	(169,662)	(154,452)	(140,926)
(Loss) income from continuing operations before income taxes	$ (67,746)	$ 198,430	$ 240,214