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5. Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of minimum operating lease payments
    Year ended December 31, 2019  
       
Operating lease expense   $ 712  
Short term lease expense     85  
Variable lease expense     102  
Sub lease income     (117 )
         
Total lease cost   $ 782  
Supplemental non-cash flow information related to right-of-use asset and lease liabilities

Supplemental non-cash flow information related to right-of-use asset and lease liabilities was as follows for the year ended December 31, 2019:

 

    Year ended December 31, 2019  
 Accretion of the lease liability   $ 124  
         
Amortization of right-of-use assets   $ 587  
         
Weighted Average Remaining Lease Term Operating Leases       1.5 years  
Weighted Average Discount Rate Operating Leases       14.8 %

 

Supplemental balance sheet information related to leases was as follows:

 

As of      
December 31, 2019      
Operating lease right-of-use assets   $ 557  
         
Operating lease liabilities:        
Short term lease liability   $ 377  
Long term lease liability   $ 200  

 

Maturities of operating lease liabilities
Year ended December 31,   Operating leases  
       
2020   $ 423  
2021     185  
2022     30  
Total lease payments   $ 638  
         
Less imputed interest     (61 )
         
Total operating lease liability   $ 577