COST OF REVENUE

Cost of revenue principally includes payroll and employee benefits associated with personnel employed in customer service and operations roles, fees paid to external providers related to the provision of services, reimbursable expenses, technology and telecommunications costs as well as depreciation and amortization of operating assets. The components of cost of revenue were as follows:



	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2016		2015		2016		2015

Compensation and benefits	$	66,357	$	62,997	$	201,193	$	197,213
Outside fees and services	77,445		66,952		222,574		175,021
Reimbursable expenses	12,080		26,456		41,317		89,242
Technology and telecommunications	11,502		10,630		32,145		32,878
Depreciation and amortization	6,618		6,815		20,007		20,481

Total	$	174,002	$	173,850	$	517,236	$	514,835