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5. Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of lease expense and sublease income
    Three Months ended March 31,  
    2021     2020  
Operating lease cost            
Operating lease expense   $ 204     $ 177  
Short term lease expense     39       14  
Variable lease expense     33       34  
Total operating lease cost   $ 276     $ 225  
                 
Finance lease cost                
Amortization of right-of-use assets   $ 55     $ -  
   Interest on lease liabilities     21       -  
Total finance lease cost   $ 76     $ -  
Cash paid for amounts included in the measurement of lease liabilities
    Three Months ended March 31,  
    2021     2020  
 Operating cash flows used in operating leases   $ 167     $ 179  
 Operating cash flows used in finance leases     21       -  
 Financing cash flows used in finance leases   $ 124       -  
Supplemental non-cash flow information related to right-of-use asset and lease liabilities
    Three Months ended March 31,  
    2021     2020  
Operating leases            
      Accretion of the lease liability   $ 99     $ 17  
      Amortization of right-of-use assets     105       160  
                 
Weighted Average Remaining Lease Term                
   Operating leases           6.7 years  
   Finance leases           3.0 years  
                 
Weighted Average Discount Rate                
 Operating leases             14.0 %
 Finance leases             5.5 %
Supplemental balance sheet information
    As of  
   

March 31,

2021

    

December 31,

2020

  
Operating leases            
Operating lease right-of-use assets   $ 2,783     $ 2,889  
                 
Current portion of operating lease liability     325       316  
Long term operating lease liability     2,502       2,578  
Total operating lease liabilities     2,827       2,894  
                 
Finance leases                
Property and equipment, at cost   $ 2,204     $ 2,308  
Accumulated depreciation     (200 )     (249 )
  Property and equipment, net     2,004       2,059  
                 
   Other current liability     422       417  
 Other long term liabilities     1,057       1,164  
Total finance lease liabilities     1,479       1,581  
Maturities of operating and finance lease liabilities
Three Months ended March 31,   Operating leases     Finance leases  
             
2021   $ 691     $ 577  
2022     573       494  
2023     577       494  
2024     595       44  
2025     612       -  
There after     1,393       -  
Total lease payments     4,441       1,609  
Less imputed interest     (1,614 )     (130 )
                 
Total lease liability   $ 2,827     $ 1,479