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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Inventories [Abstract]    
Raw materials $ 11,299 $ 11,461
Work-in-process 18,736 18,147
Finished goods 28,844 27,024
Total 58,879 56,632
Short-term portion 54,030 50,676
Long-term portion $ 4,849 $ 5,956