v3.26.3
Commitment and Contingencies - Narrative (Details)
$ in Thousands, $ in Millions
 12 Months Ended
May 13, 2026
AUD ($)
Jun. 30, 2026
AUD ($)
Jun. 30, 2025
AUD ($)
Jun. 30, 2026
USD ($)
well
license
Jun. 30, 2026
AUD ($)
well
license
May 12, 2026
AUD ($)
Sep. 29, 2025
AUD ($)
Jun. 30, 2025
USD ($)
Dec. 19, 2024
AUD ($)
bondFacility
Other Commitments [Line Items]                  
Number of wells | well       3 3        
Construction facility, percentage complete       90.00% 90.00%        
Construction facility with total project completion percentage       0.93 0.93        
Number of potential additional performance bond facilities | bondFacility                 2
Unamortized debt issuance expense         $ 0.5        
Amortization of debt issuance costs   $ 0.3 $ 0.2            
APA Group (APA) | Financial guarantee | Sturt Pipeline Project (“SPP”)                  
Other Commitments [Line Items]                  
Guarantor obligation, construction costs covered by bank guarantees, percentage       67.00% 67.00%        
Guarantor obligations, maximum exposure, undiscounted         $ 27.4        
Syndicated Facility Agreement                  
Other Commitments [Line Items]                  
Unamortized debt issuance expense       $ 1,900          
Letter of credit, facility A | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, maximum borrowing capacity         35.0       $ 25.0
Letters of credit outstanding, amount         34.3        
Line of credit facility, remaining borrowing capacity         $ 1.4        
Letter of credit, facility B | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, maximum borrowing capacity                 5.0
Line of credit facility, conditions to issue stock, value, new issues                 62.5
Letter of credit, facility C | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, maximum borrowing capacity                 5.0
Line of credit facility, conditions to issue stock, value, new issues                 $ 75.0
Letter of credit | Line of credit                  
Other Commitments [Line Items]                  
Interest rate, stated percentage       12.00% 12.00%        
Letter of credit | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, covenants, minimum liquidity         $ 20.0        
Line of credit facility, covenants, minimum current ratio       100.00% 100.00%        
Line of credit facility, establishment fee   $ 0.5              
Line of credit, drawdown fee percentage   10.00%              
Line of credit facility, commitment fee percentage   4.00%              
Line of credit | Syndicated Facility Agreement                  
Other Commitments [Line Items]                  
Line of credit facility, maximum borrowing capacity $ 40.0         $ 35.0 $ 179.8    
Line of credit facility, increase (decrease) in maximum borrowing capacity 5.0                
Line of credit facility, covenant, minimum liquidity threshold $ 10.0         $ 20.0      
Letter of credit, facility B and C | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, remaining borrowing capacity         $ 0.1        
Letter Of Credit, Facility D | Macquarie Bank Limited (“Macquarie”)                  
Other Commitments [Line Items]                  
Line of credit facility, remaining borrowing capacity         $ 4.3        
Sweetpea Petroleum Pty Ltd                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 24,028       $ 23,115  
Number of licenses | license       2 2        
Sweetpea Petroleum Pty Ltd | EP 136                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 14,500          
Sweetpea Petroleum Pty Ltd | EP 143                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       9,600          
EP 161                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 6,024       2,302  
Number of wells | well       2 2        
Beetaloo Joint Venture                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 73,322       75,630  
Number of wells | well       4 4        
Beetaloo Joint Venture | EP 76                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 14,100          
Beetaloo Joint Venture | EP 98                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       43,700          
Beetaloo Joint Venture | EP 117                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       15,500          
Midstream                  
Other Commitments [Line Items]                  
Committed at the reporting date but not recognized as liabilities, payable:       $ 22,957       $ 9,056