Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Oct. 08, 2015	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 5,518		$ 5,685	$ 6,304
Charged to Costs and Expenses	483		1,546	3,390
Charged to Other Accounts	303		(2,580)	(4,009)
Deductions	0		0	0
Ending balance	6,304	$ 5,518	4,651	5,685
Reserve for inventory excess and obsolescence
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance			6,722	4,025
Charged to Costs and Expenses			409	2,540
Charged to Other Accounts			0	157
Deductions			0	0
Ending balance	4,025		$ 7,131	$ 6,722
Predecessor | Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 5,518	4,733
Charged to Costs and Expenses		1,511
Charged to Other Accounts		0
Deductions		(726)
Ending balance		$ 5,518