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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Jan. 01, 2020
Fair Value Measurements
Impairment of Long-Lived Assets to be Disposed of			$ (18,431)
Tax benefits	$ 1,400	$ (2)
Decrease in Operating Lease Right of Use Asset	40,984
Lease termination fees	3,104
Recurring
Fair Value Measurements
Employee Phantom Share Receivable Liabilities, Fair Value Disclosure	88,504			$ 57,752
Employee Phantom Share Receivable Non Current Liabilities, Fair Value Disclosure	2,348			393
Contingent stock liability				130,594
Total	356,099			506,755
Assets, Fair Value Disclosure	81			8,574
Warrant Liability, Fair Value Disclosure	257,944			312,751
Foreign exchange forward
Fair Value Measurements
Interest rate swap liability	3,909			(106)
Foreign exchange forward | Recurring
Fair Value Measurements
Foreign Currency Contract, Asset, Fair Value Disclosure	81			8,574
Foreign Currency Contracts, Liability, Fair Value Disclosure	3,909			106
Interest rate swap asset
Fair Value Measurements
Interest rate swap liability	3,394			5,159
Interest rate swap asset | Recurring
Fair Value Measurements
Interest rate swap liability	3,394			5,159
Level 2
Fair Value Measurements
Fair value of company's debt	3,553,694			3,574,282
Level 2 | Recurring
Fair Value Measurements
Employee Phantom Share Receivable Liabilities, Fair Value Disclosure	88,504			57,752
Employee Phantom Share Receivable Non Current Liabilities, Fair Value Disclosure	2,348			393
Contingent stock liability				130,594
Total	98,155			194,004
Assets, Fair Value Disclosure	81			8,574
Level 2 | Foreign exchange forward | Recurring
Fair Value Measurements
Foreign Currency Contract, Asset, Fair Value Disclosure	81			8,574
Foreign Currency Contracts, Liability, Fair Value Disclosure	3,909			106
Level 3 | Recurring
Fair Value Measurements
Total	257,944			312,751
Warrant Liability, Fair Value Disclosure	$ 257,944			$ 312,751
Discontinued Operations, Disposed of by Sale | Brand Protection, AntiPiracy, and AntiFraud Solutions
Fair Value Measurements
Purchase price					$ 3,751

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