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SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Revenues: |  |
Revenue before interest income | $ 18,105,000 | $ 18,329,000
Interest income | 8,000 | 18,000
Total revenues | 18,113,000 | 18,347,000
Depletion, depreciation, and amortization: |  |
Depletion, depreciation, and amortization | 963,000 | 2,147,000
Impairment: |  |
Impairment of assets | 668,000 | 4,376,000
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | 6,345,000 | 779,000
Equity in income (loss) of affiliates: |  |
Equity in income of affiliates | 5,793,000 | 352,000
General and administrative expenses | (7,088,000) | (5,820,000)
Interest expense | (13,000) | (3,000)
Interest income | 8,000 | 18,000
Gain on debt extinguishment | 149,000 | 0
Gain on termination of post-retirement medical plan | 2,341,000 | 0
Earnings (loss) before income taxes | 7,535,000 | (4,674,000)
Capital Expenditures: |  |
Capital Expenditure | 3,091,000 | 3,514,000
Assets By Segment: |  |
Total assets | 24,435,000 | 15,182,000
Corporate and other |  |
Capital Expenditures: |  |
Capital Expenditure | 1,000 | 7,000
Assets By Segment: |  |
Total assets | 2,684,000 | 2,246,000
Corporate and other | Cash and other |  |
Assets By Segment: |  |
Total assets | 11,279,000 | 4,584,000
Intersegment eliminations |  |
Revenues: |  |
Total revenues | 0 | 0
Oil and natural gas |  |
Revenues: |  |
Revenue before interest income | 10,254,000 | 6,693,000
Total revenues | 10,254,000 | 6,693,000
Depletion, depreciation, and amortization: |  |
Depletion, depreciation, and amortization | 645,000 | 1,747,000
Impairment: |  |
Impairment of assets | 630,000 | 4,326,000
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | 2,423,000 | (4,230,000)
Oil and natural gas | Operating segments |  |
Capital Expenditures: |  |
Capital Expenditure | 3,028,000 | 3,099,000
Assets By Segment: |  |
Total assets | 6,401,000 | 3,613,000
Land investment |  |
Revenues: |  |
Revenue before interest income | 1,738,000 | 325,000
Total revenues | 1,738,000 | 325,000
Impairment: |  |
Impairment of assets | 0 | 50,000
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | 1,738,000 | 275,000
Land investment | Operating segments |  |
Assets By Segment: |  |
Total assets | 0 | 901,000
Contract drilling |  |
Revenues: |  |
Revenue before interest income | 5,809,000 | 10,994,000
Total revenues | 5,809,000 | 10,994,000
Depletion, depreciation, and amortization: |  |
Depletion, depreciation, and amortization | 305,000 | 356,000
Impairment: |  |
Impairment of assets | 38,000 | 0
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | (89,000) | 3,125,000
Contract drilling | Operating segments |  |
Capital Expenditures: |  |
Capital Expenditure | 62,000 | 408,000
Assets By Segment: |  |
Total assets | 4,071,000 | 3,838,000
Other |  |
Revenues: |  |
Revenue before interest income | 304,000 | 317,000
Total revenues | 312,000 | 335,000
Depletion, depreciation, and amortization: |  |
Depletion, depreciation, and amortization | 13,000 | 44,000
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | 291,000 | 273,000
Gain on sale of assets |  |
Operating profit (loss) (before general and administrative expenses): |  |
Operating profit (loss) (before general and administrative expenses) | $ 1,982,000 | $ 1,336,000

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