v3.26.1
Reserves - Summary of Fair Value of Share Purchase Options (Detail)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
$ / shares
Mar. 31, 2026
USD ($)
Mar. 31, 2025
$ / shares
Mar. 31, 2025
USD ($)
Jun. 30, 2026
$ / shares
Jun. 30, 2026
USD ($)
yr
shares
Jun. 30, 2025
$ / shares
Jun. 30, 2025
USD ($)
yr
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]                
Grant date share price and exercise price | $ / shares         $ 190.62   $ 108.56  
Weighted average fair value per option granted | $ / shares $ 43.34   $ 23.9   $ 43.34   $ 23.9  
Total fair value of options issued | $   $ 3,000   $ 3,000        
Black-Scholes Weighted Average Assumptions [Member]                
Disclosure of terms and conditions of share-based payment arrangement [line items]                
Expected dividend yield           0.65%   0.92%
Expected volatility           30.00%   30.00%
Risk-free interest rate           3.05%   2.89%
Expected option life, in years | yr           3   3
Number of options issued during the period | shares           95,290   178,020
Total fair value of options issued | $           $ 3,020   $ 2,974