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5. Commitments and Contingencies (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]      
Accretion of the lease liability $ 17 $ 40  
Amortization of right-of-use assets $ 160 $ 141  
Weighted average remaining lease term operating leases 1 year 6 months    
Weighted average discount rate operating leases 14.80%    
Operating lease right-of-use assets $ 397   $ 557
Short term lease liability 257   377
Long term lease liability $ 158   $ 200