REVENUE FROM CONTRACTS WITH CUSTOMERS REVENUE FROM CONTRACTS WITH CUSTOMERS - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 4,573	$ 2,951	$ 9,416	$ 5,525
Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,478	1,477	3,203	2,373
Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	307	336	629	498
Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	125	111	219	285
Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,593	987	5,239	2,150
Contingent residual payments
Disaggregation of Revenue [Line Items]
Revenue before interest income				165
Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	70	40	126	54
United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,593	988	5,246	2,316
Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,980	1,963	4,170	3,209
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,980	1,964	4,177	3,375
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	2,593	987	5,239	2,150
Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,910	1,924	4,051	3,156
Oil and natural gas | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,478	1,477	3,203	2,373
Oil and natural gas | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	307	336	629	498
Oil and natural gas | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	125	111	219	285
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
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	0	0	0	0
Oil and natural gas | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,910	1,924	4,051	3,156
Oil and natural gas | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,910	1,924	4,051	3,156
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	2,593	987	5,239	2,150
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	2,593	987	5,239	2,150
Contract drilling | Contingent residual payments
Disaggregation of Revenue [Line Items]
Revenue before interest income				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	2,593	987	5,239	2,150
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	2,593	987	5,239	2,150
Land investment
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0	0	165
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				165
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	0	0	0	165
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	0	0	0	165
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	70	40	126	54
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
Other | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	70	40	126	54
Other | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	1	7	1
Other | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	70	39	119	53
Other | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	70	40	126	54
Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 0	$ 0	$ 0	$ 0