Revenue (Tables)

9 Months Ended

Sep. 30, 2022

Revenue from Contract with Customer [Abstract]

Summary of revenue

The following table presents a summary of revenue:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2022		2021		2022		2021
Subscription revenue	$	156,764	$	122,156	$	446,257	$	343,725
Perpetual license and maintenance revenue	12,658		12,749		38,214		37,721
Professional services and other revenue	5,429		3,759		14,089		10,666
Revenue	$	174,851	$	138,664	$	498,560	$	392,112

Activity of deferred contract costs

The following summarizes the activity of deferred incremental costs of obtaining a contract:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2022		2021		2022		2021
Beginning balance	$	100,000	$	78,497	$	99,949	$	78,876
Capitalization of contract acquisition costs	12,837		12,109		35,240		29,555
Amortization of deferred contract acquisition costs	(11,561)		(9,368)		(33,913)		(27,193)
Ending balance	$	101,276	$	81,238	$	101,276	$	81,238