2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Segment Wise Goodwill Activity (Details) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2019
Goodwill	$ 19,049,198	$ 5,903,641	$ 31,797,564	$ 32,034,559
Goodwill, Impairment Loss	5,723,388
Digital [Member]
Goodwill	12,048,419
Goodwill, Acquired During Period	12,048,419
Goodwill, Impairment Loss
Energy [Member]
Goodwill	7,000,779	4,926,253			4,919,858
Goodwill, Acquired During Period	6,820,526	6,395
Goodwill, Impairment Loss	4,746,000
Others [Member]
Goodwill		977,388
Goodwill, Acquired During Period		977,388
Goodwill, Impairment Loss	977,388
Total [Member]
Goodwill	19,049,198	5,903,641			$ 4,919,858
Goodwill, Acquired During Period	18,868,945	983,783
Goodwill, Impairment Loss	$ 5,723,388