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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- Definition

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+ References

No definition available.

+ Details

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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 (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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Share-Based Compensation Expense - Options and Restricted Shares and Restricted Stock Units Vesting Periods (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Contractual life (in years)	10 years	10 years	10 years
Employee Stock Option \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period of award (in years)	3 years
Employee Stock Option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period of award (in years)	5 years
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period of award (in years)	4 years
Restricted Share Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period of award (in years)	4 years