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PROPERTY AND EQUIPMENT (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 838 $ 822
Less accumulated depreciation and amortization (779) (720)
Property and equipment, net 59 102
Furniture and computer equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 727 711
Leasehold improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 111 $ 111