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 expenses 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)	2015		2014		2015		2014

Compensation and benefits	$	62,997	$	68,502	$	197,213	$	184,273
Outside fees and services	66,952		62,086		175,021		186,279
Reimbursable expenses	26,456		39,149		89,242		100,220
Technology and telecommunications	10,630		13,388		32,878		34,078
Depreciation and amortization	6,815		5,599		20,481		15,678

Total	$	173,850	$	188,724	$	514,835	$	520,528