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v3.22.1

Share-based payments (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Maximum employee contribution, percentage | 4.00% |
Granted, Shares |  |
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 | $ 13,210,000 |
Unrecognized compensation costs, period for recognition | 2 years 7 months 6 days |
Premium Priced Stock Options [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation costs | $ 7,063,000 |
Unrecognized compensation costs, period for recognition | 2 years 6 months |
Performance Share Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation costs | $ 17,735,000 |
Unrecognized compensation costs, period for recognition | 2 years 2 months 12 days |
Performance Share Units With Market Conditions [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation costs | $ 4,555,000 |
Unrecognized compensation costs, period for recognition | 2 years 4 months 24 days |
Restricted Share Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation costs | $ 3,636,000 |
Unrecognized compensation costs, period for recognition | 1 year 9 months 18 days |
Deferred Share Units [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Unrecognized compensation costs | $ 0 |
Share unit liability | $ 9,596,000 | $ 10,056,000

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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. + Details
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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 + Details
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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 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 + Details
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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). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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