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PROPERTY AND EQUIPMENT (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property and equipment
Property and equipment is comprised of the following (in thousands): 
 
As of December 31,
 
2012
 
2011
Land
$
17,478

 
$
17,478

Buildings and leasehold improvements
131,911

 
130,627

Developed software
266,210

 
228,343

Equipment
412,542

 
399,757

Sub-total
828,141

 
776,205

Less: accumulated depreciation
(561,323
)
 
(520,720
)
Property and equipment, net
$
266,818

 
$
255,485