Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 2,904	$ 4,576
Derivative liabilities	3,307	6,561
Carrying Amount	775,479	940,616
Term Loan Facility | 2018 Term Loan Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	140,000	140,000
Term Loan Facility | 2018 Term Loan Facility | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	138,950	137,200
Term Loan Facility | 2020 Term Loan Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Amount	503,438	523,575
Term Loan Facility | 2020 Term Loan Facility | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 510,989	$ 530,120
Senior Notes | 6.375% Senior Notes Due 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt interest rate	6.375%	6.375%
Carrying Amount	$ 132,041	$ 277,041
Senior Notes | 6.375% Senior Notes Due 2026 | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	138,181	277,054
Foreign currency forward contracts | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	2,904	4,576
Derivative liabilities	$ 3,307	$ 6,561