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REVENUE FROM CONTRACTS WITH CUSTOMERS - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | $ 5,108 | $ 3,983 | $ 13,493 | $ 13,399
Oil |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,156 | 624 | 5,469 | 3,827
Natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 514 | 192 | 1,350 | 821
Natural gas liquids |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 217 | 14 | 507 | 233
Drilling and pump |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Contingent residual payments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 1,253 |  | 1,738 |
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 79 | 113 | 209 | 239
United states |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,185 | 3,040 | 6,005 | 8,286
Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,923 | 943 | 7,488 | 5,113
Goods transferred at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 4,219 | 943 | 9,273 | 5,120
Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Oil and natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,887 | 830 | 7,326 | 4,881
Oil and natural gas | Oil |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,156 | 624 | 5,469 | 3,827
Oil and natural gas | Natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 514 | 192 | 1,350 | 821
Oil and natural gas | Natural gas liquids |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 217 | 14 | 507 | 233
Oil and natural gas | Drilling and pump |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Oil and natural gas | Contingent residual payments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 |  | 0 |
Oil and natural gas | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Oil and natural gas | United states |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 41 | 0 | 41 | 0
Oil and natural gas | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,846 | 830 | 7,285 | 4,881
Oil and natural gas | Goods transferred at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2,887 | 830 | 7,326 | 4,881
Oil and natural gas | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Contract drilling | Oil |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | Natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | Natural gas liquids |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | Drilling and pump |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Contract drilling | Contingent residual payments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 |  | 0 |
Contract drilling | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | United states |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Contract drilling | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | Goods transferred at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Contract drilling | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 889 | 3,040 | 4,220 | 8,279
Land investment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 1,253 | 0 | 1,738 | 0
Land investment | Oil |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | Natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | Natural gas liquids |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | Drilling and pump |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | Contingent residual payments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 1,253 |  | 1,738 |
Land investment | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | United states |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 1,253 | 0 | 1,738 | 0
Land investment | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Land investment | Goods transferred at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 1,253 | 0 | 1,738 | 0
Land investment | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 79 | 113 | 209 | 239
Other | Oil |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Other | Natural gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Other | Natural gas liquids |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Other | Drilling and pump |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 | 0 | 0 | 0
Other | Contingent residual payments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 0 |  | 0 |
Other | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 79 | 113 | 209 | 239
Other | United states |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 2 | 0 | 6 | 7
Other | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 77 | 113 | 203 | 232
Other | Goods transferred at a point in time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | 79 | 113 | 209 | 239
Other | Services transferred over time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue before interest income | $ 0 | $ 0 | $ 0 | $ 0

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