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GOING CONCERN (Details) - USD ($)
$ in Thousands
5 Months Ended 12 Months Ended
Jul. 08, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Going Concern [Line Items]        
Proceeds from the sale of oil and natural gas assets     $ 581 $ 608
Income taxes receivable   $ 530 530 $ 472
Net cash inflows from land segment proceeds and distributions from the Kukio Resort Land Development Partnerships     7,156  
Spirit River, Alberta Canada | Barnwell Industries Inc        
Going Concern [Line Items]        
Proceeds from the sale of oil and natural gas assets $ 1,047      
Income taxes receivable $ 526      
At The Market Offering        
Going Concern [Line Items]        
Common shares sold (in shares)   1,167,987    
Proceeds from sale of common stock   $ 3,784    
Stock issuance costs, commission and fees   $ 123    
Office        
Going Concern [Line Items]        
Proceeds from the sale of asset     $ 1,864