v3.26.3
STATEMENT OF MATERIAL ACCOUNTING POLICIES - Basis Of Preparation (Details)
 12 Months Ended
Jun. 30, 2026
USD ($)
t
Jun. 30, 2026
USD ($)
t
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Aug. 31, 2026
USD ($)
Jul. 07, 2026
USD ($)
shares
Aug. 31, 2025
t
Feb. 28, 2025
USD ($)
Oct. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
Disclosure of initial application of standards or interpretations [line items]                    
Cash and cash equivalents $ 35,244,220 $ 35,244,220 $ 54,814,125 $ 33,157,356           $ 11,937,941
Net assets $ 88,299,689 88,299,689 92,443,999              
Net cash outflows from operating and investing activities   $ (63,500,000) (46,100,000) (25,100,000)            
Government grants, titanium alloy scrap metal transferred, nonmonetary amount | t 290 290                
Government grants, full operating capacity, nonmonetary amounts | t 200 200                
Government grants, cumulative equity capital raised $ 250,000,000 $ 250,000,000                
Defense Production Act (DPA) Funding Program And U.S. DoW Industrial Base Analysis And Sustainment Grant Program (IBAS)                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants, capacity scale-up nonmonetary amount | t             1,400      
Government grants, reimbursements 22,700,000                  
Government grants, remaining available amount 37,100,000 37,100,000                
Defense Production Act (DPA) Funding Program                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants                 $ 12,700,000  
Government grants, reimbursements   0 5,600,000 $ 4,700,000            
U.S. DoW Industrial Base Analysis And Sustainment Grant Program (IBAS)                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants               $ 47,100,000    
Government grants, reimbursements   4,600,000 100,000              
Small Business Innovation Research (SBIR) Funding Program                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants 99,000,000.0 99,000,000.0 $ 1,300,000              
Government grants, remaining available amount 79,200,000 79,200,000                
Small Business Innovation Research (SBIR) Funding Program, Task Order 2                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants 19,800,000 19,800,000                
Government grants, base value         $ 18,500,000          
Government grants, funded amount         11,500,000          
Government grants, funded amount, option         $ 25,400,000          
U.S. Government, Other Awards                    
Disclosure of initial application of standards or interpretations [line items]                    
Government grants $ 6,600,000 $ 6,600,000                
Share Placement                    
Disclosure of initial application of standards or interpretations [line items]                    
Number of ordinary shares authorized in firm commitments (in shares) | shares           2,275,000        
Depositary share equivalent, ordinary shares | shares           10        
Gross proceeds to be received from ordinary shares           $ 50,000,000