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Property and Equipment (Tables)
 9 Months Ended
Sep. 30, 2017
Property, Plant and Equipment [Abstract]  
Summary of Property and Equipment
The following table presents the detail of property and equipment for the periods presented (amounts in thousands):
 
September 30,
2017
 
December 31,
2016
Computer equipment and software
$
95,152

 
$
82,477

Furniture, equipment and building improvements
15,155

 
15,027

 
110,307

 
97,504

Less: accumulated depreciation
(78,124
)
 
(69,107
)
Total
$
32,183

 
$
28,397