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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]            
Finished goods $ 1,977   $ 2,139      
Raw materials and work in process 1,203   1,302      
Demonstration inventory 360   192      
Inventory, gross 3,540   3,633      
Less allowance for obsolescence (921) $ (601) (628) $ (843) $ (849) $ (799)
Inventories, net $ 2,619   $ 3,005