Derivatives and Fair Value Measurements - Financial Instruments Measured on Recurring Basis (Details) - Successor - USD ($)	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Foreign currency cash flow hedge contracts
Derivative [Line Items]
Transfers Between Hierarchy Levels	$ 0
Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	1,800,000	$ 4,200,000
Fair Value, Measurements, Recurring | Foreign currency cash flow hedge contracts
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	1,800,000	4,200,000
Level 1 | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	0	0
Level 1 | Fair Value, Measurements, Recurring | Foreign currency cash flow hedge contracts
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	0	0
Level 2 | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	1,800,000	4,200,000
Level 2 | Fair Value, Measurements, Recurring | Foreign currency cash flow hedge contracts
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	1,800,000	4,200,000
Level 3 | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	0	0
Level 3 | Fair Value, Measurements, Recurring | Foreign currency cash flow hedge contracts
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	$ 0	$ 0