Other Assets - Schedule of Movement of Allowance For Doubtful Accounts (Detail) - CNY (¥) ¥ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | |||
| Balance at beginning of year | ¥ (2,424) | ¥ (1,940) | ¥ (1,821) |
| Cumulative effect of adoption of new accounting standard on allowance for doubtful accounts on prepayment and other current assets | (395) | ||
| Provisions | (4,861) | (2,482) | (178) |
| Write-offs | 161 | 2,393 | 59 |
| Balance at end of year | ¥ (7,124) | ¥ (2,424) | ¥ (1,940) |