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INVENTORIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Inventory [Line Items]    
Raw materials $ 11,217 $ 10,481
Work in process 397 291
Finished Goods 26,807 39,929
Total inventory 38,421 50,701
Finished goods, consigned $ 8,200 $ 8,600