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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 23, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Loss Contingencies [Line Items] |  |  |  |  |
Royalty rates |  |  |  | 5.00% |
Royalty expense |  | $ 804 | $ 792 | $ 2,474 | $ 2,356
Pending Litigation | Cleveland Clinic Foundation and IDx Medical vs. AtriCure |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Loss contingency, damages sought | $ 6,000 |  |  |  |

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