Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Non-Cash Operating, Investing and Financing Activities (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquisition of assets, net of related payables [Line Items]
Treasury stock									$ 8,500		$ 9,640
Prepaid expenses and other assets, net									(26,762)	$ (21,970)	(2,954)
Goodwill	$ 154,131				$ 505,783				154,131	505,783
Asset impairment	37,927	$ 5,500	$ 16,103	$ 430,363	18,966	$ 368,551	$ 1,559	$ 20,706	489,893	409,782	248,515
(Gain) loss on sale of assets, net	(216,660)	(9,833)	(23,322)	(43,431)					(293,246)	(19,273)	(7,218)
Loss on facility lease termination and modification, net	13,197	$ 2,337	$ 146,467	$ 0					162,001	14,276	11,113
Purchase of treasury stock
Acquisition of assets, net of related payables [Line Items]
Treasury stock									4,244	0	0
Accounts payable									(4,244)	0	0
Net									0	0	0
Assets designated as held for sale
Acquisition of assets, net of related payables [Line Items]
Prepaid expenses and other assets, net									(517)	199	(3,195)
Assets held for sale									198,445	(29,544)	278,675
Property, plant and equipment and leasehold intangibles, net									(197,928)	29,345	(262,711)
Goodwill	$ 0				$ 0				0	0	(28,568)
Asset impairment									0	0	15,799
Net									0	0	0
Lease termination and modification, net
Acquisition of assets, net of related payables [Line Items]
Prepaid expenses and other assets, net									(248)	0	0
Property, plant and equipment and leasehold intangibles, net									(132,733)	(145,645)	0
Capital and financing lease obligations									165,918	147,886	0
Deferred liabilities									(122,304)	7,447	0
Other liabilities									(620)	(9,688)	0
(Gain) loss on sale of assets, net									(37,731)	0	0
Loss on facility lease termination and modification, net									127,718	0	0
Net									$ 0	$ 0	$ 0