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14. Income Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Current:    
Federal $ 0 $ 0
State and local 8 7
Foreign 0 0
Current 8 7
Deferred:    
Federal 0 0
State and local 0 0
Foreign 1,123 0
Income tax expense/(benefit) $ 1,131 $ 7