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6. Prepaid Expenses (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid corporate insurance $ 121 $ 48
Prepaid software services and support 134 27
Other prepaid expenses 67 66
Total prepaid assets $ 322 $ 141