Property, Equipment, and Software
 12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property, Equipment, and Software
Property, Equipment and Software
Property, equipment and software consist of the following (in thousands):
 
 
December 31,
 
 
2015
 
2014
Computer and other equipment
 
$
21,348

 
$
17,701

Leasehold improvements
 
17,851

 
12,491

Software
 
22,302

 
12,398

Office furniture
 
4,888

 
3,152

Property and equipment and software, gross
 
66,389

 
45,742

Less accumulated depreciation and amortization
 
(39,172
)
 
(31,148
)
Property and equipment and software, net
 
$
27,217

 
$
14,594


The following table summarizes the allocation of depreciation and amortization expense between cost of services and selling, general and administrative expenses (in thousands):
 
 
For the Year Ended December 31,
 
 
2015
 
2014
 
2013
Cost of services
 
$
7,536

 
$
4,603

 
$
4,697

Selling, general and administrative
 
926

 
1,444

 
2,126

Total depreciation and amortization
 
$
8,462

 
$
6,047

 
$
6,823