4. DISCONTINUED OPERATIONS - Summary of Income statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues, net
Energy hardware, software and services revenue	$ 11	$ 600	$ 140	$ 9,157
Total revenues, net	11	600	140	9,157
Costs and expenses
Cost of revenues (exclusive of depreciation and amortization shown below)	41	712	129	7,317
Professional fees	9	1	113	64
Payroll expenses	68	715	376	4,006
General and administrative expenses	(8)	520	76	996
Impairment expense - fixed assets		32	0	32
Impairment expense - intangibles		1,402	0	1,402
Impairment expense - other	0	2,144	100	2,144
Impairment expense - goodwill		7,001	0	7,001
Depreciation and amortization		801	0	2,282
Total costs and expenses	110	13,328	794	25,244
Loss from operations	(99)	(12,728)	(654)	(16,087)
Other income (expense)
Gain on disposal of assets	0	0	1,721	0
Interest expense	(3)	(1)	(6)	(3)
Total other income (expense)	(3)	(1)	1,715	(3)
(Loss) Income before income tax (expense) or benefit	(102)	(12,729)	1,061	(16,090)
Income tax benefit (expense)	0	0	0	0
Net income (loss) attributable to common shareholders	$ (102)	$ (12,729)	$ 1,061	$ (16,090)