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 for the three months ended March 31:




(in thousands)	2015		2014

Compensation and benefits	$	69,326	$	52,650
Outside fees and services	53,247		52,828
Reimbursable expenses	31,956		28,795
Technology and telecommunications	11,893		8,841
Depreciation and amortization	6,404		4,691

Total	$	172,826	$	147,805