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LONG-TERM DEBT (Settlement Agreement) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Jan. 02, 2019
Dec. 31, 2018
Sep. 21, 2018
Dec. 31, 2017
Debt Instrument [Line Items]          
Interest rate (as a percent)   8.00%      
Total debt $ 661   $ 516    
Settlement Agreements          
Debt Instrument [Line Items]          
Total debt         $ 3,200
Settlement Agreement [Member]          
Debt Instrument [Line Items]          
Total debt $ 43   66    
Settlement Agreement [Member] | Settlement Agreements          
Debt Instrument [Line Items]          
Frequency of periodic payment monthly        
Debt instrument, term 2 years        
Date of first required payment Nov. 01, 2018        
Maturity date Nov. 01, 2020        
Debt instrument, face amount       $ 100  
Interest rate (as a percent) 10.00%        
Total debt $ 100   $ 100