Goodwill and Identifiable Intangible Assets - Schedule of Activity in the Goodwill Balance (Details) - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Balance as of beginning of period:		$ 884,185	$ 868,126
Goodwill impairment	$ (10,700)	0	(10,718)	$ 0
Effect of foreign currency translation		22,777	26,777
Balance as of end of period:	$ 884,185	$ 906,962	$ 884,185	$ 868,126