Acquisitions - Acquisition-related Costs (Details) - Wandera Inc. - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related costs	$ 2,459	$ 4,648
Cost of revenues | Subscription
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related costs	17	17
Sales and marketing
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related costs	34	34
Research and development
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related costs	549	590
General and administrative
Business Combination, Separately Recognized Transactions [Line Items]
Acquisition-related costs	$ 1,859	$ 4,007