Goodwill and Intangible Assets - Changes in Carrying Amounts of Goodwill (Details) - USD ($) $ in Thousands			12 Months Ended
	Sep. 17, 2021	Feb. 09, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Beginning balance			$ 1,531,455	$ 1,525,000
Goodwill acquired			95,737	97,032
Goodwill removed due to sale of a businesses				(50,277)
Goodwill impairment			(27,369)	(32,629)	$ 0
Purchase accounting adjustments			4,338	(932)
Foreign exchange translation			(12,687)	(6,739)
Ending balance			1,591,474	1,531,455	1,525,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | B2B Backup Business
Goodwill [Line Items]
Goodwill removed due to sale of a businesses	$ (49,000)
Goodwill impairment			(27,400)	(32,600)
Voice, Backup, Security and CPP Segment
Goodwill [Line Items]
Goodwill removed due to sale of a businesses		$ (1,300)
Reportable segments
Goodwill [Line Items]
Goodwill impairment				(32,629)
Reportable segments | Digital Media
Goodwill [Line Items]
Beginning balance			996,659	942,934
Goodwill acquired			95,737	55,704
Goodwill removed due to sale of a businesses				0
Goodwill impairment			(27,369)	0
Purchase accounting adjustments			4,475	(1,437)
Foreign exchange translation			(3,513)	(542)
Ending balance			1,065,989	996,659	942,934
Reportable segments | Cybersecurity and Martech
Goodwill [Line Items]
Beginning balance			534,796	582,066
Goodwill acquired			0	41,328
Goodwill removed due to sale of a businesses				(50,277)
Goodwill impairment			0	(32,629)
Purchase accounting adjustments			(137)	505
Foreign exchange translation			(9,174)	(6,197)
Ending balance			$ 525,485	$ 534,796	$ 582,066