Condensed Consolidating Guarantor Financial Statements - Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Product	$ 510,768	$ 373,361
Service	131,895	68,193
Lease	4,329	0
Other	14,617	14,546
Revenue, Net	661,609	456,100
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	496,132	348,998
Operating	69,791	52,083
General and administrative	26,477	21,712
Depreciation and amortization	50,536	24,599
Loss (gain) on disposal or impairment, net	(3,566)	2,410
Total expenses	639,370	449,802
Earnings from equity method investments	12,614	17,091
Operating income	34,853	23,389
Other expenses (income), net:
Interest Expense	42,461	13,867
Loss on early extinguishment of debt	0	19,922
Foreign currency transaction loss	3,294	0
Other expense (income), net	(950)	(218)
Total other expenses, net	44,805	33,571
Income (loss) from continuing operations before income taxes	(9,952)	(10,182)
Income tax expense	23,083	95
Net loss	(33,035)	(10,277)
Other comprehensive income (loss), net of income taxes	(18,171)	(6,033)
Comprehensive income (loss)	(14,864)	(4,244)
Consolidation, Eliminations [Member]
Revenues:
Product	0	0
Service	0	0
Lease	0
Other	0	0
Revenue, Net	0	0
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	0	0
Operating	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Loss (gain) on disposal or impairment, net	0	0
Total expenses	0	0
Earnings from equity method investments	(47,389)	(20,662)
Operating income	(47,389)	(20,662)
Other expenses (income), net:
Interest Expense	(240)	(193)
Loss on early extinguishment of debt		0
Foreign currency transaction loss	0
Other expense (income), net	240	193
Total other expenses, net	0	0
Income (loss) from continuing operations before income taxes	(47,389)	(20,662)
Income tax expense	0	0
Net loss	(47,389)	(20,662)
Other comprehensive income (loss), net of income taxes	0	0
Comprehensive income (loss)	(47,389)	(20,662)
Reportable Legal Entities [Member] | Parent Company [Member]
Revenues:
Product	0	0
Service	0	0
Lease	0
Other	0	0
Revenue, Net	0	0
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	0	0
Operating	0	0
General and administrative	6,486	5,930
Depreciation and amortization	724	473
Loss (gain) on disposal or impairment, net	49,288	0
Total expenses	56,498	6,403
Earnings from equity method investments	59,446	19,187
Operating income	2,948	12,784
Other expenses (income), net:
Interest Expense	13,379	5,866
Loss on early extinguishment of debt		19,922
Foreign currency transaction loss	4,403
Other expense (income), net	(735)	(197)
Total other expenses, net	17,047	25,591
Income (loss) from continuing operations before income taxes	(14,099)	(12,807)
Income tax expense	18,936	(2,530)
Net loss	(33,035)	(10,277)
Other comprehensive income (loss), net of income taxes	5,612	3,581
Comprehensive income (loss)	(38,647)	(13,858)
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Revenues:
Product	479,449	340,788
Service	37,510	38,050
Lease	0
Other	0	0
Revenue, Net	516,959	378,838
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	469,998	321,657
Operating	27,931	28,120
General and administrative	5,990	6,930
Depreciation and amortization	18,731	16,830
Loss (gain) on disposal or impairment, net	(78,729)	1,982
Total expenses	443,921	375,519
Earnings from equity method investments	557	18,566
Operating income	73,595	21,885
Other expenses (income), net:
Interest Expense	10,992	8,820
Loss on early extinguishment of debt		0
Foreign currency transaction loss	(197)
Other expense (income), net	(5)	(2)
Total other expenses, net	10,790	8,818
Income (loss) from continuing operations before income taxes	62,805	13,067
Income tax expense	0	0
Net loss	62,805	13,067
Other comprehensive income (loss), net of income taxes	256	74
Comprehensive income (loss)	62,549	12,993
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member]
Revenues:
Product	31,319	32,573
Service	94,385	30,143
Lease	4,329
Other	14,617	14,546
Revenue, Net	144,650	77,262
Expenses:
Costs of products sold, exclusive of depreciation and amortization shown below	26,134	27,341
Operating	41,860	23,963
General and administrative	14,001	8,852
Depreciation and amortization	31,081	7,296
Loss (gain) on disposal or impairment, net	25,875	428
Total expenses	138,951	67,880
Earnings from equity method investments	0	0
Operating income	5,699	9,382
Other expenses (income), net:
Interest Expense	18,330	(626)
Loss on early extinguishment of debt		0
Foreign currency transaction loss	(912)
Other expense (income), net	(450)	(212)
Total other expenses, net	16,968	(838)
Income (loss) from continuing operations before income taxes	(11,269)	10,220
Income tax expense	4,147	2,625
Net loss	(15,416)	7,595
Other comprehensive income (loss), net of income taxes	(24,039)	(9,688)
Comprehensive income (loss)	$ 8,623	$ 17,283