Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Schedule of Disaggregation of Revenue

The Company disaggregates its software revenue by type of performance obligation and timing of revenue recognition as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Term licenses	$	55,907	$	47,386	$	198,465	$	160,027
Perpetual licenses		11,696		7,637		32,165		23,557
Maintenance		31,296		29,374		91,539		86,467
Professional software services		3,390		3,413		9,219		8,035
Software related services		7,650		6,170		23,229		18,548
Client engineering services		10,060		10,868		31,005		34,386
Other		1,308		1,608		5,760		5,460
Total revenue	$	121,307	$	106,456	$	391,382	$	336,480