Revenue Recognition - Summary of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 107,209	$ 85,384	$ 209,857	$ 165,685
Subscription revenue
Disaggregation of Revenue [Line Items]
Revenue	92,010	69,370	178,400	134,107
Perpetual license and maintenance revenue
Disaggregation of Revenue [Line Items]
Revenue	12,179	13,553	25,598	27,080
Professional services and other revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 3,020	$ 2,461	$ 5,859	$ 4,498