Revenue (Tables)

6 Months Ended

Jun. 30, 2019

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



	Three Months Ended June 30,
	2019						2018
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	96,084	$	—	$	96,084	$	84,884	$	—	$	84,884
Fixed fee percent complete contracts	10,414		—		10,414		7,898		—		7,898
Fixed fee contracts	25,955		—		25,955		20,377		—		20,377
Reimbursable expenses	4,390		—		4,390		3,215		—		3,215
Total professional services fees	136,843		—		136,843		116,374		—		116,374
Other services revenue*	3,524		867		4,391		3,754		784		4,538
Total services	140,367		867		141,234		120,128		784		120,912
Software and hardware	—		635		635		—		886		886
Total revenues	$	140,367	$	1,502	$	141,869	$	120,128	$	1,670	$	121,798

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



	Six Months Ended June 30,
	2019						2018
	Over Time		Point In Time		Total Revenues		Over Time		Point In Time		Total Revenues
Time and materials contracts	$	184,462	$	—	$	184,462	$	167,033	$	—	$	167,033
Fixed fee percent complete contracts	22,872		—		22,872		17,010		—		17,010
Fixed fee contracts	50,135		—		50,135		41,599		—		41,599
Reimbursable expenses	8,304		—		8,304		6,245		—		6,245
Total professional services fees	265,773		—		265,773		231,887		—		231,887
Other services revenue*	6,869		1,458		8,327		7,618		1,602		9,220
Total services	272,642		1,458		274,100		239,505		1,602		241,107
Software and hardware	—		1,584		1,584		—		1,632		1,632
Total revenues	$	272,642	$	3,042	$	275,684	$	239,505	$	3,234	$	242,739

* 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):