DISCONTINUED OPERATIONS - SCHEDULE OF DISCONTINUED OPERATIONS IN THE BALANCE SHEETS (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024	Jun. 30, 2024
Current assets:
Cash and cash equivalents	$ 0		$ 44
Total current assets of discontinued operations	0	$ 1,535
Non-current assets:
Total non-current assets of discontinued operations	0	282
Current liabilities:
Total current liabilities of discontinued operations	0	530
Discontinued Operations, Disposed of by Sale | Water Resources
Current assets:
Cash and cash equivalents	0	220
Accounts and other receivables, net of allowance for credit losses of: $0 at June 30, 2025; $234,000 at September 30, 2024	0	580
Assets held for sale	0	69
Other current assets	0	666
Total current assets of discontinued operations	0	1,535
Accounts receivable, allowance for credit losses	0	234
Non-current assets:
Drilling rigs and other property and equipment	0	3,170
Accumulated depreciation, impairment, and amortization	0	(2,888)
Total non-current assets of discontinued operations	0	282
Current liabilities:
Accounts payable	0	37
Accrued compensation	0	124
Accrued operating and other expenses	0	369
Total current liabilities of discontinued operations	$ 0	$ 530