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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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