Employee Stock Purchase Plan, Employer Matching Contribution, Percent of Match

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- Definition

Employee Stock Purchase Plan, Maximum Annual Contributions Per Employee, Percent

+ References

No definition available.

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- Definition

The number of specified trading days for weighted average price of the Company's common shares listed on the New York Stock Exchange to estimate the fair values on grant date and at each reporting date.

+ References

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- Definition

Holding period of award post vesting 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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No definition available.

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- Definition

The weighted average grant-date fair value of awards granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

No definition available.

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- Definition

Effective tax rate used in the calculation of discount rate under the share based payment arrangement.

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- Definition

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. Additionally, share-based awards which were paid or settled.

+ References

No definition available.

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- Definition

Discount value used in calculating grant-date fair value of the awards.

+ References

No definition available.

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- Definition

The weighted average estimated grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

No definition available.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

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- Definition

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.

+ References

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- Definition

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.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&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.

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- Definition

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

+ References

No definition available.

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Share-based payments (Narrative) (Details)		3 Months Ended	9 Months Ended	12 Months Ended
Share-based payments (Narrative) (Details)	Aug. 12, 2021 $ / shares	Sep. 30, 2021 USD ($) $ / shares	Sep. 30, 2021 USD ($) D	Dec. 31, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of trading days of volume weighted average price for fair value estimation \| D			20
Maximum employee contribution, percentage			4.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution, percentage			50.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employer matching contribution, percentage			100.00%
Performance Share Unit Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market value of shares vested and released			$ 0	$ 0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs		$ 7,052,000	$ 7,052,000
Unrecognized compensation costs, period for recognition			2 years 2 months 12 days
Premium Priced Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average estimated grant date fair value \| $ / shares		$ 7.24
Unrecognized compensation costs		$ 4,988,000	$ 4,988,000
Unrecognized compensation costs, period for recognition			2 years 10 months 24 days
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs		12,193,000	$ 12,193,000
Unrecognized compensation costs, period for recognition			1 year 10 months 24 days
Performance Share Units With Market Conditions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Weighted average grant-date fair value of awards \| $ / shares	$ 65.45
Award holding period	1 year
Discount value \| $ / shares	$ 5.90
Effective tax rate	35.00%
Unrecognized compensation costs		5,516,000	$ 5,516,000
Unrecognized compensation costs, period for recognition			2 years 10 months 24 days
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs		1,798,000	$ 1,798,000
Unrecognized compensation costs, period for recognition			1 year 6 months
Number of trading days of volume weighted average price for fair value estimation \| D			20
Deferred Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs		0	$ 0
Share unit liability		$ 9,501,000	$ 9,501,000	$ 9,597,000