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RELATED PARTY TRANSACTIONS (Details)
3 Months Ended 9 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
lot
Jun. 30, 2017
USD ($)
lot
Related party transactions        
Revenues - sale of interest in leasehold land $ 1,310,000 $ 0 $ 1,310,000 $ 1,678,000
Kaupulehu Developments        
Related party transactions        
Revenues - sale of interest in leasehold land 1,310,000 $ 0 $ 1,310,000 1,678,000
Kaupulehu Developments | Investment in Kukio Resort Land Development Partnerships | KD Kaupulehu LLLP Increment II        
Related party transactions        
Percent of Increment II distributions     50.00%  
Contingent payments, unrecorded 8,000,000   $ 8,000,000  
Revenues - sale of interest in leasehold land     $ 1,000,000 $ 1,678,000
Number of single family lots sold | lot       1
Kaupulehu Developments | Investment in Kukio Resort Land Development Partnerships | KD Kaupulehu, LLLP        
Related party transactions        
Percent of Increment II distributions     50.00%  
Contingent payments, unrecorded $ 8,000,000   $ 8,000,000  
Increment II distributions received to date     $ 3,500,000  
Ownership interest acquired 19.60%   19.60%  
Revenues - sale of interest in leasehold land     $ 1,310,000  
Kaupulehu Developments | Investment in Kukio Resort Land Development Partnerships | KD Kaupulehu LLLP Increment I        
Related party transactions        
Revenues - sale of interest in leasehold land     $ 310,000  
Number of single family lots sold | lot     1