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Property And Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property And Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
Property and equipment, stated at cost, at December 31, 2012 and 2011 consisted of the following (in thousands):
 
2012
 
2011
Computers and related equipment
$
61,471

 
$
50,888

Furniture and equipment
1,300

 
1,205

Leasehold improvements
3,938

 
3,756

 
66,709

 
55,849

Less: Accumulated depreciation and amortization
(47,110
)
 
(41,411
)
 Total property and equipment, net
$
19,599

 
$
14,438