Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Property and Equipment, Net (Details Textual)

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Note 6 - Property and Equipment, Net (Details Textual)
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Feb. 15, 2021
ft²
Depreciation, Total | $ $ 0.3 $ 0.6  
Recycling Facility at TRIC [Member]      
Area of Real Estate Property (Square Foot) | ft²     136,750