3. ACQUISITIONS - Unaudited Pro Forma Information Assuming Acquisitions (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Net sales			$ 49,438,115	$ 10,028,701
Net loss	$ (16,677,127)	$ 7,400,040	$ (21,812,010)	$ (23,346,143)
Net profit / (loss) per common share – basic and diluted			$ (0.75)	$ (2.44)
Weighted average common shares outstanding – basic and diluted			29,441,364	9,550,626
Pro Forma Acquisitions [Member]
Business Acquisition [Line Items]
Net sales			$ 35,581,937	$ 25,627,704
Net loss			$ 12,848,264	$ (47,333,110)
Net profit / (loss) per common share – basic and diluted			$ 0.43	$ (4.04)
Weighted average common shares outstanding – basic and diluted			29,939,290	11,701,937