Acquisitions - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 15, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill		$ 1,243,669	$ 1,206,877	$ 1,208,587
Developed technology
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Amortization Period		6 years 9 months 18 days
Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Amortization Period		18 years 3 months 18 days
Trademarks
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Amortization Period		8 years 6 months
Opterna International Corp.
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Total intangible assets subject to amortization	$ 28,000
Goodwill	35,007
Total intangible assets	$ 63,007
Amortization Period	12 years 10 months 24 days
Opterna International Corp. | Goodwill
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	$ 35,007
Opterna International Corp. | Developed technology
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Total intangible assets subject to amortization	$ 3,400
Amortization Period	5 years
Opterna International Corp. | Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Total intangible assets subject to amortization	$ 22,800
Amortization Period	15 years
Opterna International Corp. | Sales backlog
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Total intangible assets subject to amortization	$ 1,300
Amortization Period	6 months
Opterna International Corp. | Trademarks
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Total intangible assets subject to amortization	$ 500
Amortization Period	2 years