Tax Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Temporary difference related to investment in subsidiaries on which no deferred tax assets was recognized | $ 3,276 | $ 2,909 |
| Bottom of Range [Member] | ||
| Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Tax loss expiration period | 2026 | |
| Top of Range [Member] | ||
| Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Tax loss expiration period | 2043 | |
| Indian Subsidiaries [Member] | ||
| Disclosure Of Components Of Deferred Tax Assets And Liabilities [Line Items] | ||
| Unabsorbed tax losses and depreciation carried forward for an indefinite period | $ 5,541 | $ 4,233 |