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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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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

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- Definition

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

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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Stock-Based Compensation Plans (Details) - shares	1 Months Ended	3 Months Ended
Stock-Based Compensation Plans (Details) - shares	May 31, 2020	Jun. 30, 2020
Performance-based awards
Stock Options, Restricted Stock Awards and Stock Appreciation Rights
Vesting period	3 years
Number of Options to Purchase Common Shares
Granted (in shares)	250,075
2015 Plan \| Stock options, restricted stock and restricted stock units
Stock Options, Restricted Stock Awards and Stock Appreciation Rights
Vesting period		4 years
2015 Plan \| Performance-based awards
Stock Options, Restricted Stock Awards and Stock Appreciation Rights
Vesting period		3 years