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Share-Based Compensation - Summary of Share-Based Compensation (income) expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Summary of share-based compensation expense |  |  |  |  |
Share-based compensation expense |  | $ 3,303 | $ 2,453 | $ 5,469 | $ 4,216
Share-based compensation expense before income tax |  | 3,303 | 2,453 | 5,469 | 4,216
Income tax benefit | [1] | (30) | (28) | (47) | (55)
Share-based compensation expense, net of income tax |  | 3,273 | 2,425 | 5,422 | 4,161
Performance-based Restricted Stock Units |  |  |  |  |
Summary of share-based compensation expense |  |  |  |  |
Share-based compensation expense |  | 705 | 466 | 719 | 606
Share-based compensation expense before income tax |  | 705 | 466 | 719 | 606
Restricted Stock Awards And Restricted Stock Units |  |  |  |  |
Summary of share-based compensation expense |  |  |  |  |
Share-based compensation expense |  | 1,787 | 1,436 | 3,349 | 2,680
Share-based compensation expense before income tax |  | 1,787 | 1,436 | 3,349 | 2,680
Stock Options |  |  |  |  |
Summary of share-based compensation expense |  |  |  |  |
Share-based compensation expense |  | 811 | 551 | 1,401 | 930
Share-based compensation expense before income tax |  | $ 811 | $ 551 | $ 1,401 | $ 930
[1] | The 2022 and 2021 income tax benefit amount primarily reflects the tax benefit associated with our Canadian-based employees.

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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Allocated share based compensation expense benefit. + References No definition available. + Details
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