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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
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Mar. 31, 2023 | Mar. 31, 2022
CRD-A Issued under the Non-Employee Director Stock Plan |  |
Share-based Compensation Arrangement |  |
Shares issued repurchased activity | 134 | 94
CRD-A issued under the Employee Stock Purchase Plan |  |
Share-based Compensation Arrangement |  |
Shares issued repurchased activity | 27 | (6)

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