Revenue from Contracts with Customers (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2020

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedule of contract assets and contract liabilities

Contract Assets and Contract Liabilities


	December 31,		September 30,
	2019		2020
Contract assets	$	644	$	313
Deferred revenues		213,145		179,900


	January 1,		December 31,
	2019		2019
Contract assets	$	173	$	644
Deferred revenues		212,529		213,145

Schedule of disaggregation of revenue


	Nine Months Ended
	September 30,
	2019		2020
Revenues:
Subscriptions:
SELECT subscriptions	$	196,564	$	199,848
Enterprise license subscriptions		135,959		165,268
Term license subscriptions		112,815		135,895
Subscriptions		445,338		501,011
Perpetual licenses:
Perpetual licenses		38,255		36,020
Subscriptions and licenses		483,593		537,031
Services:
Professional services (recurring)		15,682		11,624
Professional services (other)		34,457		33,322
Services		50,139		44,946
Total revenues	$	533,732	$	581,977


	Year Ended December 31,
	2018		2019
	Topic 605		Topic 605		Topic 606
Revenues:
Subscriptions:
SELECT subscription revenues	$	273,745	$	267,340	$	267,249
Enterprise license subscriptions		182,816		196,081		184,833
Term license subscriptions		100,860		150,504		156,218
Subscriptions		557,421		613,925		608,300
Perpetual licenses:
Perpetual licenses		61,065		52,519		59,693
Subscriptions and licenses		618,486		666,444		667,993
Services:
Professional services (recurring)		25,981		22,974		22,797
Professional services (all other)		47,243		45,431		45,864
Services		73,224		68,405		68,661
Total revenues	$	691,710	$	734,849	$	736,654

Schedule of revenue to external customers based upon the location of customer


	Year Ended December 31,
	2018		2019
	Topic 605		Topic 605		Topic 606
Revenues:
Americas(1)	$	328,749	$	360,934	$	356,331
Europe, the Middle East, and Africa(2)		231,486		235,254		236,602
Asia Pacific		131,475		138,661		143,721
Total Revenues	$	691,710	$	734,849	$	736,654

(1)

Americas includes the United States, Canada, and Latin America (including the Caribbean). Revenue attributable to the United States totaled $277,706 (Topic 605) for the year ended December 31, 2018 and $307,259 (Topic 605) and $306,493 (Topic 606) for the year ended December 31, 2019.

(2)

Revenue attributable to the United Kingdom totaled $59,086 (Topic 605) for the year ended December 31, 2018 and $59,524 (Topic 605) and $57,321 (Topic 606) for the year ended December 31, 2019.