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3. ACQUISITIONS - Unaudited Pro Forma Information Assuming Acquisitions (Details) - USD ($)
3 Months Ended 9 Months Ended 21 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2020
Business Acquisition [Line Items]                  
Net sales $ 11,916,065     $ 3,438,674     $ 22,293,321 $ 8,073,781 $ 8,073,781
Net loss (16,677,127) $ 7,400,040 $ (7,167,530) (8,551,301) $ (5,815,098) $ (1,916,254) (16,444,619) (16,282,653)  
Grid Fabric [Member]                  
Business Acquisition [Line Items]                  
Net sales 11,916,065     4,824,897     24,883,292 11,522,066  
Net loss $ (16,677,127)     $ (8,464,370)     $ (17,050,808) $ (16,467,306)  
Net loss per common share – basic and diluted $ (0.49)     $ (0.64)     $ (0.58) $ (1.80)  
Weighted average common shares outstanding – basic and diluted 34,014,221     13,173,509     29,382,905 9,145,775