Segments and Related Information (Reconciliation of EBITDA to Consolidated (Loss) Income from Continuing Operations before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
EBITDA Reconciliation:
EBITDA - Continuing operations	$ 42,800	$ 65,300
Interest expense, net	(10,973)	(12,003)
Depreciation and amortization	(42,598)	(33,494)
(Loss) income from continuing operations before income taxes	$ (10,740)	$ 19,753