Business Combinations - Schedule of Acquired Intangible Assets (Details) - SOASTA, Inc. [Member] $ in Thousands	1 Months Ended
	Apr. 30, 2017 USD ($)
Business Acquisition [Line Items]
Gross carrying amount	$ 49,900
Weighted average useful life	4 years 4 months 24 days
Completed technology
Business Acquisition [Line Items]
Gross carrying amount	$ 18,800
Weighted average useful life	4 years 1 month 6 days
Customer-related intangible assets
Business Acquisition [Line Items]
Gross carrying amount	$ 28,200
Weighted average useful life	4 years 7 months 6 days
Trademarks
Business Acquisition [Line Items]
Gross carrying amount	$ 2,400
Weighted average useful life	4 years 10 months 24 days
Non-compete agreements
Business Acquisition [Line Items]
Gross carrying amount	$ 500
Weighted average useful life	1 year 10 months 24 days