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Acquisitions (Details) - USD ($)
$ in Millions
9 Months Ended
Feb. 08, 2022
Jan. 14, 2022
May 07, 2021
Mar. 31, 2022
Williston Basin Acquisition        
Business Combination Segment Allocation [Line Items]        
Asset acquisition, consideration transferred   $ 25.7    
Non-cash asset retirement obligations   2.4    
Senior Secured Reserve-Based Credit Facility        
Business Combination Segment Allocation [Line Items]        
Initial borrowing base   $ 16.0    
Barnett Shale        
Business Combination Segment Allocation [Line Items]        
Non-cash asset retirement obligations     $ 2.8  
Non-operating working interest, percent     17.00%  
Revenue interest, percent     14.00%  
Purchase price of oil and gas assets     $ 17.4  
Downward purchase adjustment       $ 0.9
Jonah Field Acquisition        
Business Combination Segment Allocation [Line Items]        
Purchase price of oil and gas assets $ 27.7      
Payments to acquire businesses, gross $ 1.5