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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
CAD in Thousands, $ in Thousands
12 Months Ended
Sep. 30, 2016
USD ($)
venture
Sep. 30, 2016
CAD
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Principles of Consolidation        
Number of 80%-owned joint ventures | venture 2      
Restricted Cash and Investments [Abstract]        
Restricted cash   CAD 500 $ 381 $ 7,458
Retirement Plans        
Increase (decrease) pension expense | $ $ 43      
Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Abstract]        
Discount Rate 10.00%      
Minimum        
Equity Method Investments        
Ownership interest in affiliated companies required to account investments under equity method investments (more than) 3.00%      
Maximum        
Equity Method Investments        
Ownership interest in affiliated companies required to account investments under equity method investments (more than) 5.00%      
Retirement Plans        
Decrease (increase) in the expected return on plan assets assumption 0.50%      
Kaupulehu Developments        
Principles of Consolidation        
Ownership interest in subsidiaries 77.60%      
KD Kona 2013 LLLP        
Principles of Consolidation        
Ownership interest in subsidiaries 75.00%      
Kaupulehu 2007, LLLP        
Principles of Consolidation        
Ownership interest in subsidiaries 80.00%      
Kaupulehu Investors, LLC        
Principles of Consolidation        
Ownership interest in subsidiaries 80.00%