Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation Of Revenue [Line Items]
Total revenue	$ 166,034	$ 159,781
Term Licenses and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	103,309	94,045
Perpetual Licenses [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	9,100	12,124
Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	35,601	33,337
Professional Software Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,633	1,391
Software Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,100	9,061
Client Engineering Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,776	8,012
Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,515	$ 1,811