DEBT - CLEAN ENERGY VENTURES (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Proceeds from sale leaseback transactions - solar	$ 24,071	$ 17,673	$ 42,927
Clean Energy Ventures
Debt Instrument [Line Items]
Proceeds from sale leaseback transactions - solar	$ 24,100	$ 17,700	$ 42,900
Clean Energy Ventures | Minimum
Debt Instrument [Line Items]
Sale leaseback transaction lease term	5 years
Clean Energy Ventures | Maximum
Debt Instrument [Line Items]
Sale leaseback transaction lease term	15 years