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5. Commitments and Contingencies (Details 2) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]      
Accretion of the lease liability $ 99 $ 17  
Amortization of right-of-use assets $ 105 $ 160  
Weighted Average Remaining Lease Term      
Operating leases 6 years 8 months 12 days    
Finance leases 3 years    
Weighted Average Discount Rate      
Operating leases 14.00%    
Finance leases 5.50%    
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
Long term other liability 1,057   1,164
Total finance lease liabilities $ 1,479   $ 1,581