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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 |

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- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Form 20-F -Section Item 18 -Subsection Instruction 2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447 + Details
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- Definition The results of operations for oil and gas producing activities, excluding corporate overhead and interest costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62299-109447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 + Details
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