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WARRANTIES (Tables)
9 Months Ended
Sep. 30, 2012
WARRANTIES [Abstract]  
Changes in entity's product warranty liability
Balance at December 31, 2011
 
$
1,500
 
Additions charged to cost of product sales
  
335
 
Repairs and replacements
  
(469
)
Balance at September 30, 2012
 
$
1,366