Share Based Compensation - Additional Information (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares reserved for issuance	384,111,187
Options granted for the year	0	0	0
Unrecognized compensation expense	¥ 0	¥ 0
IPO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock transaction date	Dec. 10, 2018
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based award granted, contractual term	10 years
Share based award granted, vesting period	4 years
Share-based compensation expenses	¥ 13,563	¥ 12,458	¥ 25,134
Unrecognized compensation expense, weighted average period recognized	2 years 11 months 23 days	1 year 10 months 20 days
Unrecognized compensation expense	¥ 5,473	¥ 12,859
Total fair value of RSUs vested	3,646	3,782	7,070
Intrinsic value of RSUs vested	¥ 3,646	3,782	7,070
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based award granted, contractual term	10 years
Share based award granted, vesting period	4 years
Share vested term after resignation	15 days
Share-based compensation expenses	¥ 0	¥ 0	¥ 1,161

Share based compensation share vested term after resignation.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Date the subsidiary or equity investee issued or sold stock, in YYYY-MM-DD format.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net number of share options (or share units) granted during the period.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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