Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 425,077	$ 363,226
Subscription lease licenses
Disaggregation of Revenue [Line Items]
Total revenue	91,457	65,077
Perpetual licenses
Disaggregation of Revenue [Line Items]
Total revenue	65,988	67,527
Software licenses
Disaggregation of Revenue [Line Items]
Total revenue	157,445	132,604
Maintenance
Disaggregation of Revenue [Line Items]
Total revenue	247,241	213,674
Service
Disaggregation of Revenue [Line Items]
Total revenue	20,391	16,948
Maintenance and service
Disaggregation of Revenue [Line Items]
Total revenue	$ 267,632	$ 230,622
Direct revenue, as a percentage of total revenue | Revenue Benchmark | Sales Channel Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	72.40%	71.80%
Indirect revenue, as a percentage of total revenue | Revenue Benchmark | Sales Channel Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	27.60%	28.20%