CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities of continuing operations:
Net loss	$ (1,207)	$ (1,550)	$ (3,126)	$ (2,212)
Net earnings (loss) from discontinued operations	331	(466)	12	(780)
Net loss from continuing operations	(1,538)	(1,084)	(3,138)	(1,432)
Adjustments to reconcile net loss from continuing operations to net cash (used in) provided by operating activities:
Equity in income of affiliates	0	(1,071)	0	(1,071)
Depletion, depreciation, and amortization	754	1,342	1,658	2,801
Impairment of assets	52	1,677	665	1,677
Sale of interest in leasehold land, net of fees paid			0	(439)
Distributions of income from equity investees			0	1,071
Retirement benefits income			(158)	(173)
Non-cash rent expense (income)			1	(13)
Accretion of asset retirement obligation			391	434
Deferred income tax (benefit) expense	(25)	53	(34)	51
Asset retirement obligation payments			(275)	(396)
Share-based compensation expense			129	111
Retirement plan contributions and payments			(1)	(2)
Credit loss (reversal) expense			(10)	46
Foreign currency (gain) loss	(10)	128	341	2
(Decrease) increase from changes in current assets and liabilities			(423)	333
Net cash (used in) provided by operating activities from continuing operations			(854)	3,000
Cash flows from investing activities of continuing operations:
Proceeds from sale of interest in leasehold land, net of fees paid			0	439
Proceeds from the sale of oil and natural gas assets			282	0
Capital expenditures - oil and natural gas			(2,641)	(1,624)
Dividend received from discontinued operations			250	0
Cash divested from the sale of discontinued operations, net of proceeds			(163)	0
Net cash used in investing activities from continuing operations			(2,272)	(1,185)
Cash flows from financing activities of continuing operations:
Repayments for insurance premium financing			(15)	0
Distributions to non-controlling interests			0	(223)
Net cash used in financing activities from continuing operations			(15)	(223)
Cash flows from discontinued operations:
Net cash used in operating activities			(95)	(738)
Net cash provided by (used in) investing activities			538	(1)
Net cash used in financing activities			(250)	0
Net cash provided by (used in) discontinued operations			193	(739)
Effect of exchange rate changes on cash and cash equivalents			(125)	2
Net (decrease) increase in cash and cash equivalents			(3,073)	855
Cash and cash equivalents at beginning of period					$ 4,505	$ 2,830
Less: Cash and cash equivalents of discontinued operations at end of period	0	(118)	0	(118)
Cash and cash equivalents of continuing operations at end of period	$ 1,432	$ 3,567	$ 1,432	$ 3,567