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4. LEASES (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Property and equipment, net $ 69 $ 6
Current liabilities 80  
Prior to Adjustment    
Property and equipment, net 6  
Current liabilities 17  
Adjustments | Right of Use Asset    
Property and equipment, net 63  
Current liabilities 0  
Adjustments | Lease Liabilities    
Property and equipment, net 0  
Current liabilities $ 63