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Revenue Recognition (Schedule Of Disaggregated Revenue) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Gross revenue | $ 1,566,293 | $ 1,348,112 | $ 1,231,010
Net revenue | 1,530,978 | 1,315,065 | 1,201,564
Roto-Rooter [Member] |  |  |
Gross revenue | 927,136 | 975,936 | 955,859
Implicit price concessions and credit memos | (26,827) | (26,584) | (22,460)
Net revenue | 900,309 | 949,352 | 933,399
Roto-Rooter [Member] | Drain cleaning [Member] |  |  |
Gross revenue | 237,534 | 249,069 | 261,606
Roto-Rooter [Member] | Plumbing [Member] |  |  |
Gross revenue | 181,370 | 196,695 | 194,274
Roto-Rooter [Member] | Excavation [Member] |  |  |
Gross revenue | 227,413 | 233,196 | 222,945
Roto-Rooter [Member] | Other [Member] |  |  |
Gross revenue | 883 | 936 | 708
Roto-Rooter [Member] | Short-Term Core [Member] |  |  |
Gross revenue | 647,200 | 679,896 | 679,533
Roto-Rooter [Member] | Water Restoration [Member] |  |  |
Gross revenue | 178,016 | 185,550 | 169,434
Roto-Rooter [Member] | Independent Contractors [Member] |  |  |
Gross revenue | 72,777 | 85,749 | 84,442
Roto-Rooter [Member] | Franchisee Fees [Member] |  |  |
Gross revenue | 5,814 | 5,658 | 5,591
Roto-Rooter [Member] | Other [Member] |  |  |
Gross revenue | $ 23,329 | $ 19,083 | $ 16,859

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