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Share-based awards- General (Details) - shares |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2015 | Sep. 30, 2014 | Mar. 31, 2017
Share-based awards |  |  |
Number of shares authorized but unissued |  |  | 29,079,770
Share option and RSUs with four-year vesting schedule |  |  |
Share-based awards |  |  |
Vesting period |  |  | 4 years
Vesting percentage per year after initial vesting |  |  | 25.00%
Share option and RSUs with four-year vesting schedule | Maximum |  |  |
Share-based awards |  |  |
Expiry period |  |  | 6 years
Share option and RSUs with four-year vesting schedule and initial vesting at first anniversary | Tranche one |  |  |
Share-based awards |  |  |
Vesting period |  |  | 1 year
Vesting percentage |  |  | 25.00%
Share option and RSUs with four-year vesting schedule and initial vesting at second anniversary | Tranche one |  |  |
Share-based awards |  |  |
Vesting period |  |  | 2 years
Vesting percentage |  |  | 50.00%
Share option and RSUs with six-year vesting schedule |  |  |
Share-based awards |  |  |
Vesting period |  |  | 6 years
Share option and RSUs with six-year vesting schedule | Maximum |  |  |
Share-based awards |  |  |
Expiry period |  |  | 8 years
2014 Plan |  |  |
Share-based awards |  |  |
Plan term |  | 10 years |
2014 Plan | Maximum |  |  |
Share-based awards |  |  |
Additional number of shares subject to award | 25,000,000 |  |

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- Definition Period from the date of the establishment of plan award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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