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Realignment Costs - Schedule of Realignment Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Realignment costs	$ 10,022	$ (584)	$ 6,778
Cost of Revenues
Restructuring Cost and Reserve [Line Items]
Realignment costs	1,464	(236)	1,101
Cost of Revenues | Subscriptions and licenses
Restructuring Cost and Reserve [Line Items]
Realignment costs	42	(51)	256
Cost of Revenues | Services
Restructuring Cost and Reserve [Line Items]
Realignment costs	1,422	(185)	845
Research and development
Restructuring Cost and Reserve [Line Items]
Realignment costs	848	(171)	3,380
Selling and marketing
Restructuring Cost and Reserve [Line Items]
Realignment costs	5,945	(263)	2,252
General and administrative
Restructuring Cost and Reserve [Line Items]
Realignment costs	1,765	86	45
Operating Expenses
Restructuring Cost and Reserve [Line Items]
Realignment costs	$ 8,558	$ (348)	$ 5,677

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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