v3.25.2
Share Based Compensation - Summary of Option Activity (Detail) - USD ($)
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Number of share options        
Number of share options, Beginning balance 4,476,373 11,442,858 11,950,858  
Number of share options, Expired (890,000) (6,875,185) (440,000)  
Number of share options, Forfeited or cancelled (post-vesting) (615,073) (91,300) (68,000)  
Number of share options, Ending balance 2,971,300 4,476,373 11,442,858 11,950,858
Number of share options, Vested and expected to vest 2,971,300      
Number of share options, Exercisable 2,971,300      
Weighted Average Exercise Price        
Weighted Average Exercise Price, Beginning balance $ 0.23 $ 0.11 $ 0.11  
Weighted Average Exercise Price, Expired 0.15 0.03 0.02  
Weighted Average Exercise Price, Forfeited or cancelled (post-vesting) 0.06 0.29 0.23  
Weighted Average Exercise Price, Ending balance 0.29 $ 0.23 $ 0.11 $ 0.11
Weighted Average Exercise Price, Vested and expected to vest $ 0.29      
Weighted Average Remaining Contractual Life        
Weighted Average Remaining Contractual Life 1 year 1 month 2 days 1 year 7 months 2 days 1 year 2 months 15 days 1 year 8 months 26 days
Weighted Average Remaining Contractual Life, Vested and expected to vest 1 year 1 month 2 days      
Weighted Average Remaining Contractual Life, Exercisable 1 year 1 month 2 days      
Aggregate Intrinsic Value        
Aggregate Intrinsic Value $ 0 $ 0 $ 0 $ 0
Aggregate Intrinsic Value, Vested and expected to vest 0      
Aggregate Intrinsic Value, Exercisable $ 0