v3.26.1
Property, Plant and Equipment & Natural Gas Properties - Narrative (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2026
Mar. 31, 2026
TJ / d
Mar. 31, 2026
MMcf / d
Mar. 31, 2026
km
Dec. 30, 2025
Jun. 30, 2025
USD ($)
Property, Plant and Equipment [Line Items]                  
Property, plant and equipment, net   $ 601 $ 601           $ 308
Construction facility, percentage complete       86.00%          
Sturt plateau compression facility (“SPCF”), volume         40 39      
Sturt plateau pipeline (SPP), distance | km             35    
Falcon Acquisition                  
Property, Plant and Equipment [Line Items]                  
Number of shares transferred (in shares) | shares 6,537,503                
Total consideration transferred $ 23,700                
Falcon Acquisition | Australia Sub                  
Property, Plant and Equipment [Line Items]                  
Percentage of ownership interest 1.90%                
Number of shares transferred (in shares) | shares 147,508                
Falcon Acquisition | Employee stock option                  
Property, Plant and Equipment [Line Items]                  
Shares issued (in shares) | shares 369,084                
Exercise price (in USD per share) | $ / shares $ 21.94                
Falcon Oil & Gas (Australia) Limited ("Falcon Australia") | Falcon Acquisition                  
Property, Plant and Equipment [Line Items]                  
Percentage of ownership interest 98.10%             98.10%  
Syndicated Facility Agreement | Term loan                  
Property, Plant and Equipment [Line Items]                  
Interest expense   2,000 2,000            
Unproved properties                  
Property, Plant and Equipment [Line Items]                  
Natural gas properties, successful efforts method:   465,020 465,020           342,314
Assets under construction - natural gas equipment                  
Property, Plant and Equipment [Line Items]                  
Natural gas properties, successful efforts method:   61,200 61,200           $ 24,441
Capitalized borrowing costs   $ 3,800 $ 3,800