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11. Property, Plant and Equipment, net (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 3,200 $ 1,981 $ 1,204
Impairment of property, plant and equipment $ 0 $ 2,235 $ 0