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Summary of significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2020

Summary of significant accounting policies

Disaggregation Of Revenue


		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2020			2019			2020			2019

		(in thousands)
SaaS subscription and support and maintenance		$	57,933		$	41,916		$	160,989		$	112,872
On‑premise subscription			7,849			5,135			18,159			12,224
Recurring revenue			65,782			47,051			179,148			125,096
Perpetual licenses			1,017			2,283			3,811			7,381
Professional services			3,605			5,234			10,066			14,529
Non‑recurring revenue			4,622			7,517			13,877			21,910
Total revenue		$	70,404		$	54,568		$	193,025		$	147,006

Contract With Customer Asset And Liability


		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2020			2019			2020			2019

		(in thousands)
Balance, beginning of the period		$	157,738		$	117,919		$	140,710		$	100,662
Revenue earned			(50,038)			(39,261)			(147,324)			(116,145)
Deferral of revenue			80,538			54,651			194,852			148,792
Balance, end of the period		$	188,238		$	133,309		$	188,238		$	133,309