Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Summary of revenue

The following table presents a summary of revenue:

	Three Months Ended March 31,
(in thousands)	2020		2019
Subscription revenue	$	86,390	$	64,737
Perpetual license and maintenance revenue	13,419		13,527
Professional services and other revenue	2,839		2,037
Revenue	$	102,648	$	80,301

Activity of deferred contract costs

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

	Three Months Ended March 31,
(in thousands)	2020			2019
Beginning balance	$	72,265		$	59,434
Capitalization of contract acquisition costs	6,121			6,626
Amortization of deferred contract acquisition costs	(7,644		)	(6,249		)
Ending balance	$	70,742		$	59,811