SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) (Details) Mcf in Thousands, MMcf in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2020 USD ($) Boe Mcf bbl	Sep. 30, 2019 USD ($) Boe bbl Mcf MMcf	Sep. 30, 2020 USD ($) Boe bbl Mcf	Sep. 30, 2019 USD ($)
Changes in the estimates of net interests in total proved reserves of oil and natural gas liquids and natural gas
Proved developed reserves - total | Boe			928,000
Proved undeveloped reserves - total | Boe			5,000
Changes in the estimates of net interests in total proved reserves of oil and natural gas liquids and natural gas
Balance at the beginning of the period | Boe	2,198,000	2,462,000
Revisions of previous estimates | Boe	(1,041,000)	(78,000)
Extensions, discoveries and other additions | Boe		20,000
Acquisitions of reserves | Boe	176,000	44,000
Less sales of reserves | Boe	(114,000)
Less production | Boe	(286,000)	(250,000)
Balance at the end of the period | Boe	933,000	2,198,000
Capitalized Costs Relating to Oil and Natural Gas Producing Activities
Proved properties			$ 64,142	$ 62,075
Unproved properties			0	130
Total capitalized costs			64,142	62,205
Accumulated depletion, depreciation, and impairment			61,839	55,972
Net capitalized costs			2,303	6,233
Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development
Acquisition of unproved properties	$ 0	$ 0
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves	242	668
Development costs	2,857	(622)
Total	3,099	46
Additions and revisions to asset retirement obligation included in total costs incurred	(52)	(755)
Results of Operations for Oil and Natural Gas Producing Activities
Net revenues	6,693	6,406
Production costs	(4,850)	(5,213)
Depletion	(1,747)	(2,680)
Results of Operations, Impairment of Oil and Gas Properties	(4,326)	(5,710)
Pre-tax results of operations	(4,230)	(7,197)
Estimated income tax benefit (expense)	0	(160)
Results of operations	(4,230)	(7,357)
Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Abstract]
Future cash inflows			20,426	65,720
Future production costs			(17,860)	(41,733)
Future development costs			(73)	(13,295)
Future income tax expenses			(92)	(450)
Future net cash flows excluding abandonment, decommissioning and reclamation			2,401	10,242
Future abandonment, decommissioning and reclamation			(13,055)	(13,190)
Future net cash flows			(10,654)	(2,948)
10% annual discount for timing of cash flows			8,969	5,258
Standardized measure of discounted future net cash flows	2,310	13,836	$ (1,685)	$ 2,310
Changes in the Standardized Measure of Discounted Future Net Cash Flows
Beginning of year	2,310	13,836
Sales of oil and natural gas produced, net of production costs	(1,843)	(1,193)
Net changes in prices and production costs, net of royalties and wellhead taxes	(1,876)	(15,358)
Extensions and discoveries	0	891
Net change due to purchases and sales of minerals in place	467	334
Previously estimated development costs incurred	1,305	0
Changes in future development costs	7,773	0
Revisions of previous quantity estimates	(10,274)	(71)
Net change in income taxes	288	3,792
Accretion of discount	230	1,350
Other - changes in the timing of future production and other	(63)	(932)
Other - net change in Canadian dollar translation rate	(2)	(339)
Net change	(3,995)	(11,526)
End of year	$ (1,685)	$ 2,310
OIL & NGL (Bbls)
Changes in the estimates of net interests in total proved reserves of oil and natural gas liquids and natural gas
Balance at the beginning of the period | bbl	1,419,000	1,590,000
Revisions of previous estimates | bbl	(740,000)	(74,000)
Extensions, discoveries and other additions | bbl		14,000
Acquisitions of reserves | bbl	68,000	30,000
Less sales of reserves | bbl	(38,000)
Less production | bbl	(174,000)	(141,000)
Balance at the end of the period | bbl	535,000	1,419,000
Proved developed reserves - volume | bbl			530,000
Proved undeveloped reserves - volume | bbl			5,000
Natural gas
Changes in the estimates of net interests in total proved reserves of oil and natural gas liquids and natural gas
Balance at the beginning of the period | Mcf	4,520	5,055
Revisions of previous estimates | Mcf	(1,746)	(21)
Extensions, discoveries and other additions | MMcf		33
Acquisitions of reserves | Mcf	628	81
Less sales of reserves | Mcf	(443)
Less production | Mcf	(649)	(628)
Balance at the end of the period | Mcf	2,310	4,520
Proved developed reserves - volume | Mcf			2,310
Proved undeveloped reserves - volume | Mcf			0