REVENUE FROM CONTRACTS WITH CUSTOMERS - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 5,453	$ 4,387
Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,668	1,380
Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	849	375
Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	403	132
Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
Contingent residual payments
Disaggregation of Revenue [Line Items]
Revenue before interest income	600	485
Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	57	73
United States
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,444	2,427
Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,009	1,960
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	4,577	2,445
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,920	1,887
Oil and natural gas | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,668	1,380
Oil and natural gas | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	849	375
Oil and natural gas | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	403	132
Oil and natural gas | Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	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
Oil and natural gas | United States
Disaggregation of Revenue [Line Items]
Revenue before interest income	964	0
Oil and natural gas | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,956	1,887
Oil and natural gas | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,920	1,887
Oil and natural gas | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
Contract drilling | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling | Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
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
Contract drilling | United States
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
Contract drilling | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Contract drilling | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	876	1,942
Land investment
Disaggregation of Revenue [Line Items]
Revenue before interest income	600	485
Land investment | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | Contingent residual payments
Disaggregation of Revenue [Line Items]
Revenue before interest income	600	485
Land investment | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | United States
Disaggregation of Revenue [Line Items]
Revenue before interest income	600	485
Land investment | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Land investment | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	600	485
Land investment | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	57	73
Other | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Other | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Other | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0
Other | Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	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	57	73
Other | United States
Disaggregation of Revenue [Line Items]
Revenue before interest income	4	0
Other | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	53	73
Other | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	57	73
Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 0	$ 0