REVENUE FROM CONTRACTS WITH CUSTOMERS - DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 3,983	$ 3,392	$ 13,399	$ 8,917
Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	624	1,419	3,827	3,792
Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	192	152	821	650
Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	14	117	233	402
Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,040	1,689	8,279	3,839
Contingent residual payments
Disaggregation of Revenue [Line Items]
Revenue before interest income				165
Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	113	15	239	69
United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,040	1,689	8,286	4,005
Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	943	1,703	5,113	4,912
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	943	1,703	5,120	5,078
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	3,040	1,689	8,279	3,839
Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	830	1,688	4,881	4,844
Oil and natural gas | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	624	1,419	3,827	3,792
Oil and natural gas | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	192	152	821	650
Oil and natural gas | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	14	117	233	402
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	830	1,688	4,881	4,844
Oil and natural gas | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	830	1,688	4,881	4,844
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	3,040	1,689	8,279	3,839
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	3,040	1,689	8,279	3,839
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	3,040	1,689	8,279	3,839
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	3,040	1,689	8,279	3,839
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	113	15	239	69
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	113	15	239	69
Other | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0	7	1
Other | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	113	15	232	68
Other | Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	113	15	239	69
Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 0	$ 0	$ 0	$ 0