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Net Income Attributable to Shareholders of Crawford & Company per Common Share - Schedule of Shares Issued and Included in Weighted-average Common Shares used to Compute Basic and Diluted Earnings per Share (Details) - Class A Non-Voting - shares shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
CRD-A Issued under the Non-Employee Director Stock Plan |  |  |  |
Share-based Compensation Arrangement |  |  |  |
Shares issued repurchased activity | 0 | (7) | 94 | 85
CRD-A Issued under the U.K. ShareSave Scheme |  |  |  |
Share-based Compensation Arrangement |  |  |  |
Shares issued repurchased activity | 0 | 64 | 0 | 65
CRD-A Issued under the 2016 Omnibus Stock and Incentive Plan |  |  |  |
Share-based Compensation Arrangement |  |  |  |
Shares issued repurchased activity | 0 | (18) | (6) | (18)

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