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, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 2,951	$ 1,917	$ 5,525	$ 3,740
United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	988		2,316
Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,963		3,209
Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,477		2,373
Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	336		498
Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	111		285
Drilling and pump
Disaggregation of Revenue [Line Items]
Revenue before interest income	987		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	40		54
Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,924	859	3,156	1,812
Oil and natural gas | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Oil and natural gas | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,924		3,156
Oil and natural gas | Oil
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,477		2,373
Oil and natural gas | Natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	336		498
Oil and natural gas | Natural gas liquids
Disaggregation of Revenue [Line Items]
Revenue before interest income	111		285
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
Oil and natural gas | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Contract drilling
Disaggregation of Revenue [Line Items]
Revenue before interest income	987	1,016	2,150	1,858
Contract drilling | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	987		2,150
Contract drilling | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
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	987		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
Land investment
Disaggregation of Revenue [Line Items]
Revenue before interest income	0	0	165	0
Land investment | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		165
Land investment | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
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			165
Land investment | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	40	$ 42	54	$ 70
Other | United states
Disaggregation of Revenue [Line Items]
Revenue before interest income	1		1
Other | Canada
Disaggregation of Revenue [Line Items]
Revenue before interest income	39		53
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
Other | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	40		54
Goods transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,964		3,375
Goods transferred at a point in time | Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	1,924		3,156
Goods transferred at a point in time | Contract drilling
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Goods transferred at a point in time | Land investment
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		165
Goods transferred at a point in time | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	40		54
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue before interest income	987		2,150
Services transferred over time | Oil and natural gas
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Services transferred over time | Contract drilling
Disaggregation of Revenue [Line Items]
Revenue before interest income	987		2,150
Services transferred over time | Land investment
Disaggregation of Revenue [Line Items]
Revenue before interest income	0		0
Services transferred over time | Other
Disaggregation of Revenue [Line Items]
Revenue before interest income	$ 0		$ 0