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Property and Equipment (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Property, Plant and Equipment [Abstract]    
Purchases of property and equipment $ 15 $ 36
Depreciation expense 200 500
Net book value of fixed assets 200 100
Gain on disposal of fixed assets (61) (1)
Proceeds from sale of fixed assets $ 89