Revenue (Tables)

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents revenue disaggregated by revenue source and pattern of revenue recognition (in thousands):

	Three Months Ended September 30, 2018						Nine Months Ended September 30, 2018
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	85,127	$	—	$	85,127	$	252,158	$	—	$	252,158
Fixed fee percent complete contracts	9,731		—		9,731		26,741		—		26,741
Fixed fee contracts	20,402		—		20,402		62,001		—		62,001
Reimbursable expenses	3,223		—		3,223		9,468		—		9,468
Total professional services fees	118,483		—		118,483		350,368		—		350,368
Other services revenue*	3,610		786		4,396		11,229		2,389		13,618
Total services	122,093		786		122,879		361,597		2,389		363,986
Software and hardware	—		1,054		1,054		—		2,686		2,686
Total revenues	$	122,093	$	1,840	$	123,933	$	361,597	$	5,075	$	366,672

* Other services revenue primarily consists of hosting fees, maintenance, training, internally developed SaaS 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, 2018		Nine Months Ended September 30, 2018
United States	$	121,440	$	358,179
Canada	800		2,910
Other countries	1,693		5,583
Total revenues	$	123,933	$	366,672