v3.26.1
Financial risk management - Schedule of Balances Held at the End of Year with an Analysis which Assesses Impact on Profit and Loss Due to Change in Exchange Rate (Details)
€ in Thousands, £ in Thousands, SFr in Thousands, $ in Thousands, $ in Thousands, $ in Thousands
 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2026
CHF (SFr)
Jun. 30, 2026
SGD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2026
AUD ($)
Jun. 30, 2026
GBP (£)
Jun. 30, 2025
CHF (SFr)
Jun. 30, 2025
SGD ($)
Jun. 30, 2025
EUR (€)
Jun. 30, 2025
AUD ($)
Jun. 30, 2025
GBP (£)
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held $ 161,778 $ 179,101                      
Loss for the period (57,500) (102,142) $ (87,956)                    
+20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (9,212) (589)                      
-20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 9,212 589                      
Bank accounts | USD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held 75,559 95                      
Bank accounts | USD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 15,112 19                      
Bank accounts | USD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (15,112) (19)                      
Bank accounts | CHF | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | SFr       SFr 308         SFr 93        
Bank accounts | CHF | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 76 23                      
Bank accounts | CHF | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (76) (23)                      
Bank accounts | SGD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held         $ 362         $ 236      
Bank accounts | SGD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 56 37                      
Bank accounts | SGD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (56) (37)                      
Bank accounts | EUR | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | €           € 42         € 29    
Bank accounts | EUR | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 9 7                      
Bank accounts | EUR | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (9) (7)                      
Trade and other receivables | USD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held 47 48                      
Trade and other receivables | USD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 9 10                      
Trade and other receivables | USD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (9) (10)                      
Trade and other receivables | CHF | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | SFr       8         4        
Trade and other receivables | CHF | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 2 1                      
Trade and other receivables | CHF | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (2) (1)                      
Trade and other receivables | SGD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held         481         191      
Trade and other receivables | SGD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 74 30                      
Trade and other receivables | SGD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (74) (30)                      
Trade and other receivables | EUR | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | €           88         € 101    
Trade and other receivables | EUR | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 20 24                      
Trade and other receivables | EUR | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (20) (24)                      
Trade payables and accruals | USD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held (1,274) (1,376)                      
Trade payables and accruals | USD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (255) (275)                      
Trade payables and accruals | USD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 255 275                      
Trade payables and accruals | CHF | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | SFr       SFr (65)         SFr (61)        
Trade payables and accruals | CHF | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (16) (15)                      
Trade payables and accruals | CHF | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 16 15                      
Trade payables and accruals | SGD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held         $ (123)         $ (177)      
Trade payables and accruals | SGD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (19) (28)                      
Trade payables and accruals | SGD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 19 28                      
Trade payables and accruals | EUR | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | €           € (7)              
Trade payables and accruals | EUR | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (2)                        
Trade payables and accruals | EUR | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 2                        
Trade payables and accruals | AUD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held             $ (513)         $ (458)  
Trade payables and accruals | AUD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (70) (60)                      
Trade payables and accruals | AUD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 70 60                      
Trade payables and accruals | GBP | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held | £               £ (41)         £ (42)
Trade payables and accruals | GBP | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (11) (12)                      
Trade payables and accruals | GBP | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 11 12                      
Provisions | USD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held (1,750) (1,750)                      
Provisions | USD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (350) (350)                      
Provisions | USD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period 350 $ 350                      
Borrowings | USD | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Foreign currency balance held (119,235)                        
Borrowings | USD | +20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period (23,847)                        
Borrowings | USD | -20% | Currency risk                          
Disclosure Of Effect Of Changes In Foreign Exchange Rates [Line Items]                          
Loss for the period $ 23,847