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Commitments and Contingencies - Legal Proceedings (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jun. 24, 2021 USD ($) | Dec. 19, 2016 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) plaintiff | Jun. 30, 2020 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Legal settlement, net |  |  | $ 30,468 | $ 0 | $ 30,468 | $ 0
Baldino Group |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  |  | 2 |
Damages sought amount |  |  |  |  | $ 16,000 |
CBIZ Operations and a former employee of CBIZ MMP |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Total transaction price |  | $ 200,000 |  |  |  |
CBIZ Operations and a former employee of CBIZ MMP | Maximum |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Damages sought amount |  | $ 177,000 |  |  |  |
University of Pittsburgh Medical Center |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Settlement amount awarded to other party | $ 41,500 |  |  |  |  |
Legal settlement, net | $ (30,500) |  |  |  |  |

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