Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Shipping and Handling
Accounting Policies [Line Items]
Shipping and handling costs	$ 6,813		$ 13,605
Shipping and Handling | Predecessor
Accounting Policies [Line Items]
Shipping and handling costs		$ 6,130		$ 11,860
Maximum
Accounting Policies [Line Items]
Sales revenue not recognized at shipment (as a percent)	1.00%		1.00%
Maximum | Predecessor
Accounting Policies [Line Items]
Sales revenue not recognized at shipment (as a percent)		1.00%		1.00%