Business Segment Information - Reconciliation of Segment Profits to Consolidated Operating Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Segment profits	$ 61,932		$ 138,695
General and administrative expenses	(39,235)		(109,478)
Restructuring costs	0		0
Depreciation and amortization	(29,478)		(80,846)
Gain (loss) on disposal of assets	(26)		664
Goodwill impairment	0		0
Operating loss	$ (6,807)		$ (50,965)
Predecessor
Segment Reporting Information [Line Items]
Segment profits		$ 25,339		$ 59,019
General and administrative expenses		(30,065)		(86,706)
Restructuring costs		(10,470)		(10,470)
Depreciation and amortization		(53,142)		(164,141)
Gain (loss) on disposal of assets		128		(133)
Goodwill impairment		646		646
Operating loss		$ (68,856)		$ (203,077)