Summary of significant accounting policies (Tables)

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Schedule of Allowance for Credit Losses for Trade Accounts Receivable

Activity related to our allowance for credit losses for trade accounts receivable was as follows:

	Three Months Ended March 31,
	2023		2022
	(in thousands)
Balance, beginning of period	$	445	$	391
Provision	14		122
Write-offs	(55)		(27)
Recoveries of amounts previously written off	23		6
Balance, end of period	$	427	$	492

Schedule of Disaggregation of Revenue

Revenue from subscription and non-subscription contractual arrangements were as follows:

	Three Months Ended March 31,
	2023		2022
	(in thousands)
SaaS subscription and support and maintenance	$	120,762	$	96,350
On‑premise subscription	6,468		5,851
Subscription revenue	127,230		102,201
Professional services	4,384		3,944
Perpetual licenses	598		2,113
Non‑subscription revenue	4,982		6,057
Total revenue	$	132,212	$	108,258

Schedule of Contract with Customer Asset and Liability

The opening and closing balances of contract assets were as follows:

	Three Months Ended March 31,
	2023		2022
	(in thousands)
Balance, beginning of the period	$	817	$	1,792
Balance, end of the period	636		1,885
Change	$	(181)	$	93

Changes in contract liabilities, including revenue earned during the period from the beginning contract liability balance and new deferrals of revenue during the period, were as follows:

	Three Months Ended March 31,
	2023		2022
	(in thousands)
Balance, beginning of the period	$	346,150	$	282,128
Revenue earned	(107,595)		(85,337)
Deferral of revenue	103,895		95,708
Other (1)	(1,608)		—
Balance, end of the period	$	340,842	$	292,499

(1) Includes contract assets netted against contract liabilities on a contract-by-contract basis.