Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of revenue

The following table presents a summary of revenue:

	Year Ended December 31,
(in thousands)	2019		2018		2017
Subscription revenue	$	290,549	$	205,827	$	132,873
Perpetual license and maintenance revenue	54,173		54,622		50,337
Professional services and other revenue	9,864		6,911		4,517
Revenue	$	354,586	$	267,360	$	187,727

Activity of deferred contract costs

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

	Year Ended December 31,
(in thousands)	2019			2018
Beginning balance	$	59,434		$	50,176
Capitalization of contract acquisition costs	40,172			29,075
Amortization of deferred contract acquisition costs	(27,341		)	(19,817		)
Ending balance	$	72,265		$	59,434