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3.DISCONTINUED OPERATIONS - Summary of Income statement (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Revenues, net    
Energy hardware, software and services revenue $ 158 $ 9,667
Total revenues, net 158 9,667
Costs and expenses    
Cost of revenues (exclusive of depreciation and amortization shown below) 936 8,711
Professional fees 115 116
Payroll expenses 426 4,911
General and administrative expenses 413 1,641
Impairment expense - fixed assets 0 32
Impairment expense - intangibles 0 1,402
Impairment expense - other 4,181 872
Impairment expense - goodwill 0 7,001
Depreciation and amortization 0 2,215
Total costs and expenses 6,071 26,901
Loss from operations (5,913) (17,234)
Other income (expense)    
Gain on disposal of assets 1,508 0
Interest expense (24) (3)
Total other income (expense) 1,484 (3)
Loss before income tax (expense) or benefit (4,429) (17,237)
Income tax (expense) or benefit 0 0
Net loss $ (4,429) $ (17,237)