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INVENTORY (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
INVENTORY          
Raw materials $ 398   $ 398   $ 294
Work in process         67
Finished goods 1,122   1,122   955
Total inventory 1,520   1,520   $ 1,316
Excess inventory charges $ 257 $ 0 $ 350 $ 0