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5. Commitments and Contingencies (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]          
Accretion of the lease liability $ 101 $ 31 $ 160 $ 107  
Amortization of right-of-use assets $ 100 $ 151 $ 402 $ 438  
Weighted Average Remaining Lease Term          
Operating leases 7 years 1 month 6 days   7 years 1 month 6 days    
Finance leases 3 years 2 months 12 days   3 years 2 months 12 days    
Weighted Average Discount Rate          
Operating leases 13.90%   13.90%    
Finance leases 5.20%   5.20%    
Operating leases          
Operating lease right-of-use assets $ 2,843   $ 2,843   $ 557
Current portion of operating lease liability 286   286   377
Long term operating lease liability 2,662   2,662   200
Total operating lease liabilities 2,948   2,948   577
Finance leases          
Property and equipment, at cost 2,988   2,988   0
Accumulated depreciation (155)   (155)   0
Property and equipment, net 2,833   2,833   0
Other current liability 621   621   0
Long term other liability 1,270   1,270   0
Total finance lease liabilities $ 1,891   $ 1,891   $ 0