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COMMITMENTS AND CONTINGENCIES (Detail) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2020
Mar. 07, 2019
Commitments and contingencies      
Amounts accrued under the incentive compensation plan $ 286    
Contract drilling      
Commitments and contingencies      
Loss contingency accrual $ 180    
Unfavorable Regulatory Action | Contract drilling      
Commitments and contingencies      
Loss contingency accrual   $ 300  
KD Development, LLC      
Commitments and contingencies      
Collaborative agreement, fees, percentage of cumulative net profits     0.72%
Pool Of Various Individuals      
Commitments and contingencies      
Collaborative agreement, fees, percentage of cumulative net profits     0.20%
Kaupulehu Developments      
Commitments and contingencies      
Fees to be paid to Nearco 10.40%    
Percentage of Increment II receipts to be paid to external real estate counsel for services provided in the negotiation and closing of the Increment II transaction 1.20%