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Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2020

Summary of significant accounting policies

Disaggregation Of Revenue


		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2020			2019			2020			2019

		(in thousands)
SaaS subscription and support and maintenance		$	52,978		$	37,216		$	103,056		$	70,956
On‑premise subscription			5,770			4,048			10,310			7,089
Recurring revenue			58,748			41,264			113,366			78,045
Perpetual licenses			1,032			2,252			2,794			5,098
Professional services			2,451			4,794			6,461			9,295
Non‑recurring revenue			3,483			7,046			9,255			14,393
Total revenue		$	62,231		$	48,310		$	122,621		$	92,438

Contract With Customer Asset And Liability


		Three Months Ended						Six Months Ended
		June 30,						June 30,
		2020			2019			2020			2019

		(in thousands)
Balance, beginning of the period		$	145,735		$	111,255		$	140,710		$	100,662
Revenue earned			(49,562)			(42,277)			(97,285)			(76,884)
Deferral of revenue			61,565			48,941			114,313			94,141
Balance, end of the period		$	157,738		$	117,919		$	157,738		$	117,919