Annual report [Section 13 and 15(d), not S-K Item 405]

Share Capital - Summary Of Option Activity (Detail)

v3.26.1
Share Capital - Summary Of Option Activity (Detail) - $ / shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted units 0 0  
Weighted average contractual life 4 years 6 months 10 days [1] 5 years 6 months 10 days [1] 6 years 9 months 10 days
Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Beginning balance outstanding 7,877,000 [1] 7,877,000  
Ending balance outstanding 7,877,000 [1] 7,877,000 [1] 7,877,000
Weighted average exercise price beginning balance $ 0.05 [1] $ 0.05  
Weighted average exercise price ending balance $ 0.05 [1] $ 0.05 [1] $ 0.05
[1] As of December 31, 2025, 7,877 of the stock options outstanding were exercisable (December 31, 20247,877).