Consolidated Statement of Operations - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statement of Operations
Revenue	$ 386,289	$ 338,393	$ 209,382	$ 218,260	$ 212,399	$ 186,373	$ 191,464	$ 199,690	$ 1,152,324	$ 789,926	$ 805,232
Cost of revenue (exclusive of depreciation and amortization)	289,901	255,116	140,418	143,708	141,421	121,780	122,577	133,343	829,143	519,121	559,846
Selling, general and administrative expenses	48,328	102,048	34,998	35,581	35,052	30,829	33,528	31,028	220,955	130,437	120,691
Depreciation and amortization	28,112	28,052	21,406	21,320	21,176	18,761	20,943	18,759	98,890	79,639	75,408
Goodwill and Intangible Asset Impairment	69,437								69,437
Related party expense	1,698	26,892	2,456	2,385	3,121	2,448	2,589	2,335	33,431	10,493	8,977
Operating (loss) income	(51,187)	(73,715)	10,104	15,266	11,629	12,555	11,827	14,225	(99,532)	50,236	40,310
Other expense (income), net:
Interest expense, net	36,749	37,652	27,869	26,219	27,702	27,399	26,913	27,400	128,489	109,414	108,779
Loss on extinguishment of debt		35,512							35,512
Sundry expense, net	(665)	563	(327)	2,724	429	711	1,503	(1,931)	2,295	712	3,247
Other income, net	(1,297)								(1,297)
Net loss before income taxes	(85,974)	(147,442)	(17,438)	(13,677)	(16,502)	(15,555)	(16,589)	(11,244)	(264,531)	(59,890)	(71,716)
Income tax benefit	27,322	37,002	(2,074)	(2,004)	1,818	3,757	3,130	3,082	60,246	11,787	26,812
Net loss	(58,652)	(110,440)	(19,512)	(15,681)	(14,684)	(11,798)	(13,459)	(8,162)	(204,285)	(48,103)	(44,904)
Dividend equivalent on Series A Preferred Stock related to beneficial conversion feature		(16,375)							(16,375)
Cumulative dividends for Series A Preferred Stock	(1,264)	(1,225)							(2,489)
Net loss attributable to common stockholders	$ (59,916)	$ (128,040)	$ (19,512)	$ (15,681)	$ (14,684)	$ (11,798)	$ (13,459)	$ (8,162)	$ (223,149)	$ (48,103)	$ (44,904)
Loss per share:
Basic and diluted (in dollars per share)	$ (0.40)	$ (0.92)	$ (0.28)	$ (0.23)	$ (0.23)	$ (0.18)	$ (0.21)	$ (0.13)	$ (2.08)	$ (0.75)	$ (0.70)