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PROPERTY AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2012
Property And Equipment Disclosure [Abstract]  
Property and equipment
Property and equipment at December 31, 2012 and 2011 consists of the following (in thousands):
 
 
2012
 
2011
 
Estimated
Useful Lives
(years)
Computer equipment and software
$
193,282

 
$
146,926

 
2 to 5
Office equipment, furniture, fixtures & leasehold improvements
39,201

 
30,031

 
2 to 11
Total
232,483

 
176,957

 
 
Less: accumulated depreciation and amortization
(143,214
)
 
(112,635
)
 
 
Property and equipment, net
$
89,269

 
$
64,322