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Inventories (Tables)
9 Months Ended
Sep. 30, 2011
Inventories 
Disclosure of inventories

 

 

 

 

September 30,

 

December 31,

 

 

 

2011

 

2010

 

Parts and work-in-process

 

$

33,765

 

$

23,224

 

Finished goods

 

45,631

 

45,520

 

 

 

$

79,396

 

$

68,744