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Property and Equipment, Net
 12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net
Property and Equipment, Net
Property and equipment consisted of the following (in thousands):
 
 
 
December 31,
 
 
2015
 
2014
Computer hardware
 
$
162,346

 
$
159,309

Computer software
 
339,634

 
312,968

Furniture and equipment
 
96,536

 
105,262

Leasehold improvements
 
118,491

 
113,782

Other
 
9,560

 
9,045

Property and equipment, cost
 
726,567

 
700,366

Accumulated depreciation
 
(583,661
)
 
(578,612
)
Property and equipment, net
 
$
142,906

 
$
121,754