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WARRANTIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Changes in Entity's Product Warranty Liability [Abstract]    
Balance at beginning of the period $ 912 $ 1,697
Additions charged to cost of product sales 1,603 623
Repairs and replacements (1,272) (1,225)
Adjustments   (183)
Balance at the end of the period $ 1,243 $ 912