Revenue (Tables)

9 Months Ended

Sep. 30, 2021

The following tables present revenue disaggregated by revenue source and pattern of revenue recognition (in thousands):


	Three Months Ended September 30,
	2021						2020
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	146,675	$	—	$	146,675	$	114,581	$	—	$	114,581
Fixed fee percent complete contracts	11,572		—		11,572		13,920		—		13,920
Fixed fee contracts	28,678		—		28,678		22,836		—		22,836
Reimbursable expenses	2,316		—		2,316		1,513		—		1,513
Total professional services fees	189,241		—		189,241		152,850		—		152,850
Other services revenue*	2,694		484		3,178		3,368		537		3,905
Total services	191,935		484		192,419		156,218		537		156,755
Software and hardware	—		401		401		—		923		923
Total revenues	$	191,935	$	885	$	192,820	$	156,218	$	1,460	$	157,678

*Other services revenue primarily consists of hosting fees, maintenance, training, internally developed SaaS revenue and partner referral fees.


	Nine Months Ended September 30,
	2021						2020
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	414,540	$	—	$	414,540	$	316,866	$	—	$	316,866
Fixed fee percent complete contracts	35,252		—		35,252		39,556		—		39,556
Fixed fee contracts	77,726		—		77,726		72,124		—		72,124
Reimbursable expenses	7,132		—		7,132		7,437		—		7,437
Total professional services fees	534,650		—		534,650		435,983		—		435,983
Other services revenue*	8,691		1,583		10,274		10,314		1,696		12,010
Total services	543,341		1,583		544,924		446,297		1,696		447,993
Software and hardware	—		1,373		1,373		—		1,586		1,586
Total revenues	$	543,341	$	2,956	$	546,297	$	446,297	$	3,282	$	449,579

* Other services revenue primarily consists of hosting fees, maintenance, training, internally developed SaaS revenue and partner referral fees.

The following table presents revenue disaggregated by geographic area, as determined by the billing address of customers (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
United States	$	189,334	$	154,078	$	535,491	$	440,140
Other countries	3,486		3,600		10,806		9,439
Total revenues	$	192,820	$	157,678	$	546,297	$	449,579