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WARRANTIES (Tables)
12 Months Ended
Dec. 31, 2014
Product Warranties Disclosures [Abstract]  
Changes in entity's product warranty liability
Information regarding changes in the Company's product warranty liability for the years ended December 31, 2014 and 2013 is as follows (in thousands):
 
Amount
Balance as of December 31, 2012
$
802

Additions charged to cost of product sales
1,172

Repairs and replacements
(277
)
Balance as of December 31, 2013
$
1,697

Additions charged to cost of product sales
623

Repairs and replacements
(1,225
)
Adjustments
(183
)
Balance as of December 31, 2014
$
912