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Acquisitions (Narrative) (Details) - Roto-Rooter, Bloomington [Member] - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Jun. 01, 2020 | Mar. 31, 2021
Goodwill [Line Items] |  |
Acquisition date |  | Jun. 01, 2020
Acquisition, in cash | $ 2.2 |

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