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Revenue from Contracts with Customers (Tables)
9 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
Summary of Revenue from Contracts with Customers and Revenue by Region
The following table summarizes revenue from contracts with customers for the three and nine months ended September 30, 2020 and 2019:
Three Months Ended September 30,Nine Months Ended September 30,
2020201920202019
(in thousands)
Subscription revenue$78,721 $57,885 $220,142 $157,163 
Term and perpetual software licenses11,904 9,160 33,456 28,151 
Maintenance and support7,743 9,178 24,315 28,107 
Professional services6,516 6,679 19,789 20,399 
Other191 253 625 1,479 
Total revenue$105,075 $83,155 $298,327 $235,299 
Summary of Estimated Revenue Expected to be Recognized in Future Related to Performance Obligations The estimated revenues do not include unexercised contract renewals.
Next Twelve MonthsThereafter
 (in thousands)
Subscription revenue$197,007 $46,101 
Term and perpetual software licenses30,925 12,985 
Maintenance and support16,859 3,809 
Professional services13,674 —