v3.26.1
Income Tax Benefit (Expense) - Schedule of Income Tax Recognized in Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Income tax relating to components of other comprehensive income [abstract]      
Foreign currency translation differences on foreign operations, before tax $ (80,437) $ (20,898) $ (9,862)
Equity instruments at FVOCI - net change in fair value, before tax 275 (452) 0
Remeasurement of defined benefit liability, before tax (571) (839) (1,212)
Total (80,733) (22,189) (11,074)
Foreign currency translation differences on foreign operations, tax (expense) benefit 0 0 0
Equity instruments at FVOCI - net change in fair value, tax (expense) benefit 0 0 0
Remeasurement of defined benefit liability, tax (expense) benefit 148 197 248
Total 148 197 248
Foreign currency translation differences on foreign operations, net of tax (80,437) (20,898) (9,862)
Equity instruments at FVOCI - net change in fair value, net of tax 275 (452) 0
Remeasurements of defined benefit liability (423) (642) (964)
Other comprehensive loss for the year, net of tax (80,585) $ (21,992) $ (10,826)
Issue of convertible notes, before tax 295,939    
Repurchase of convertible notes, before tax (840)    
Total 295,099    
Issue of convertible notes, tax (expense) benefit (54,211)    
Repurchase of convertible notes, tax (expense) benefit 162    
Total (54,049)    
Issue of convertible notes, net of tax 241,728    
Repurchase of convertible notes, net of tax (678)    
Total $ 241,050