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INVENTORIES (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 6,126 | $ 4,521
Finished goods and work-in-process | 1,550 | 1,130
Gross inventories | 7,676 | 5,651
Less: reserve for obsolescence | (439) | (439)
Net inventories | $ 7,237 | $ 5,212

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