2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Life (Details)	12 Months Ended
	Sep. 30, 2021
Patents [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	13 years
Patents [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Websites [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Customer List And Non Compete [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Customer List And Non Compete [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Design Assets [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Trademarks [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	14 years
Engineering Trade Secrets [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Engineering Trade Secrets [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Strategic Contract [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Infrasctructure Asset [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years