4. DISCONTINUED OPERATIONS - Summary of Income statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenues, net
Energy hardware, software and services revenue	$ 101	$ 4,118
Total revenues, net	101	4,118
Costs and expenses
Cost of revenues (exclusive of depreciation and amortization shown below)	48	3,074
Professional fees	(0)	73
Payroll expenses	274	1,556
General and administrative expenses	31	304
Depreciation and amortization	(0)	270
Total costs and expenses	(353)	5,277
Loss from operations	(252)	(1,159)
Other income (expense)
Gain on disposal of assets	1,710	0
Interest (expense) income	(1)	1
Total other income (expense)	1,709	1
Income (loss) before income tax (expense) or benefit	1,457	(1,158)
Income tax (expense) or benefit	0	0
Net income (loss) attributable to common shareholders	$ 1,457	$ (1,158)