4. DISCONTINUED OPERATIONS - Summary of Income statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Revenues, net
Energy hardware, software and services revenue	$ 0	$ 101
Costs and expenses
Cost of revenues (exclusive of depreciation and amortization shown below)	0	48
Payroll expenses	0	274
General and administrative expenses	0	31
Total costs and expenses	0	353
Loss from operations	0	(252)
Other income (expense)
Gain on disposal of assets		1,710
Interest expense	0	(1)
Total other income (expense)	0	1,709
Income before income tax (expense) benefit	0	1,457
Income tax benefit (expense)	0	0
Net income attributable to common shareholders	$ 0	$ 1,457