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)	2014		2013		2014		2013

Compensation and benefits	$	68,502	$	39,600	$	184,273	$	108,923
Outside fees and services	62,086		56,611		186,279		137,851
Reimbursable expenses	39,149		29,496		100,220		73,061
Technology and telecommunications	13,388		5,459		34,078		18,010
Depreciation and amortization	5,599		3,095		15,678		10,350

Total	$	188,724	$	134,261	$	520,528	$	348,195