Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Liabilities
Contingent consideration	$ (2,957)	$ (66)
Level 1
Liabilities
Contingent consideration	0	0
Level 2
Liabilities
Contingent consideration	0	0
Level 3
Liabilities
Contingent consideration	(2,957)	(66)
Cross-currency swap agreements
Assets
Interest rate cap contracts	11,578
Cross-currency swap agreements | Level 1
Assets
Interest rate cap contracts	0
Cross-currency swap agreements | Level 2
Assets
Interest rate cap contracts	11,578
Cross-currency swap agreements | Level 3
Assets
Interest rate cap contracts	0
Foreign currency exchange contracts
Assets
Foreign Currency Contract, Asset, Fair Value Disclosure		1,473
Foreign currency exchange contracts | Level 1
Assets
Foreign Currency Contract, Asset, Fair Value Disclosure		0
Foreign currency exchange contracts | Level 2
Assets
Foreign Currency Contract, Asset, Fair Value Disclosure		1,473
Foreign currency exchange contracts | Level 3
Assets
Foreign Currency Contract, Asset, Fair Value Disclosure		0
Interest rate cap contracts
Assets
Interest rate cap contracts	659	2,460
Interest rate cap contracts | Level 1
Assets
Interest rate cap contracts	0	0
Interest rate cap contracts | Level 2
Assets
Interest rate cap contracts	659	2,460
Interest rate cap contracts | Level 3
Assets
Interest rate cap contracts	0	0
Interest rate swap agreements
Liabilities
Swap Agreements	(5,232)	(9,116)
Interest rate swap agreements | Level 1
Liabilities
Swap Agreements	0	0
Interest rate swap agreements | Level 2
Liabilities
Swap Agreements	(5,232)	(9,116)
Interest rate swap agreements | Level 3
Liabilities
Swap Agreements	$ 0	$ 0