Revenue from Contracts with Customer (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenues

The following table summarizes revenue by the Company’s service offerings (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Subscription services	$	94,312	$	64,258	$	257,827	$	171,869
Professional services	2,302		1,929		7,715		4,789
Total revenue	$	96,614	$	66,187	$	265,542	$	176,658

Summary of Changes in the Balance of Deferred Contract Acquisition Costs

The change in the balance of deferred contract acquisition costs during the periods presented is as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Balance at beginning of the period	$	23,604	$	14,851	$	18,273	$	11,610
Add: Contract costs capitalized during the period	6,032		3,307		17,032		9,936
Less: Amortization of contract costs during the period	(3,416)		(1,986)		(9,085)		(5,374)
Balance at end of the period	$	26,220	$	16,172	$	26,220	$	16,172