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4. LEASES (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Leases [Abstract]    
Weighted-average remaining lease term - operating lease 1 year  
Weighted-average discount rate - operating lease 10.00%  
Assets    
Property and equipment, net operating lease -right of use asset $ 63 $ 0
Liabilities    
Current liabilities operating lease-current liability $ 63