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Property, Plant and Equipment
6 Months Ended
Jun. 30, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consisted of the following (in thousands):
 
Estimated
Useful Life
(in years)
 
As of
 
 
June 30, 2014
 
December 31, 2013
Leasehold improvements
5
to
20
 
$
2,870

 
$
2,869

Computer software and equipment
3
to
7
 
40,172

 
35,554

Machinery and equipment
3
to
5
 
5,818

 
5,648

Furniture and fixtures
5
 
711

 
688

Work in progress 
N/A
 
394

 
4,281

Total cost
 
 
 
 
49,965

 
49,040

Accumulated depreciation
 
 
 
 
(41,285
)
 
(40,541
)
Total property, plant and equipment, net
 
 
 
 
$
8,680

 
$
8,499