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Share-Based Compensation and Capital Stock - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) shares | Jun. 30, 2021 USD ($) shares | Jun. 30, 2022 USD ($) award_type shares | Jun. 30, 2021 USD ($) shares
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Stock repurchased during period (in shares) | shares | 0 | 1,582 | 68,486 | 1,582
Cost of shares repurchased | $ |  | $ 0.2 | $ 9.9 | $ 0.2
Stock redeemed during period (in shares) | shares | 2,422 | 1,156 | 34,848 | 47,655
Stock redeemed during period | $ | $ 0.3 | $ 0.1 | $ 5.2 | $ 5.4
Restricted stock awards |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Types of awards granted | award_type |  |  | 2 |
Restricted stock awards | Minimum |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Performance period, duration |  |  | 9 months |
Restricted stock awards | Maximum |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Performance period, duration |  |  | 60 months |
Performance vested restricted stock units |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Types of awards granted | award_type |  |  | 3 |
Performance vested restricted stock units | Minimum |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Performance period, duration |  |  | 9 months |
Performance period, percent |  |  | 0.00% |
Performance vested restricted stock units | Maximum |  |  |  |
Share-Based Compensation and Capital Stock [Line Items] |  |  |  |
Performance period, duration |  |  | 60 months |
Performance period, percent |  |  | 300.00% |

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- Definition Percentage of vesting of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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