13. MAJOR CUSTOMERS AND VENDORS - Energy segment major suppliers (Details) - Customer Concentration Risk [Member] - Accounts Receivable [Member]	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Energy Vendor A [Member]
Concentration Risk, Percentage	20.23%	22.24%	38.87%	0.00%
Energy Vendor B [Member]
Concentration Risk, Percentage	17.82%	0.00%	11.76%	0.00%
Energy Vendor C [Member]
Concentration Risk, Percentage	12.06%	0.00%	0.00%	15.62%
Energy Vendor D [Member]
Concentration Risk, Percentage	0.00%	23.90%	0.00%	14.54%
Energy Vendor E [Member]
Concentration Risk, Percentage				12.91%