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Other Assets - Narrative (Details) - USD ($)
9 Months Ended
May 07, 2021
Mar. 31, 2021
Mar. 31, 2021
Jun. 30, 2020
Noncontrolling Interest [Line Items]        
Acquisition deposit   $ 2,325,000 $ 2,325,000 $ 0
Subsequent Event | Barnett Shale        
Noncontrolling Interest [Line Items]        
Non-operating working interest, percent 17.00%      
Revenue interest, percent 14.00%      
Purchase price of oil and gas assets $ 18,200,000      
Acquisition deposit $ 2,300,000      
Well Lift Inc.        
Noncontrolling Interest [Line Items]        
Royalty percentage     5.00%  
Ownership percentage   17.50% 17.50%  
Impairment expense   $ 100,000