Share-based compensation - Additional information (Details) - 2018 Restricted Share Unit Scheme |
Apr. 01, 2018
shares
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| Restricted Stock Units (RSUs) | |
| Share-based compensation | |
| Ordinary shares issued to trust as a reserve pool for future issuance of equity share | 2,106,321 |
| Restricted share units, effective period | 10 years |
| Restricted share units, grants in period | 2,098,069 |
| Restricted Stock | |
| Share-based compensation | |
| Restricted share units, vesting condition | The restricted share units will begin vesting by equal instalment for 36 months upon a qualified IPO. |
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- Definition Aggregate number of common shares reserved for future issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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