Basis Of Presentation (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) item	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) item	Sep. 30, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)
Effective tax rate	25.60%	24.50%	24.20%	23.70%
Excess tax benefit on stock options	$ 450,000	$ 1,200,000	$ 4,400,000	$ 5,300,000
Capitalized property and equipment	1,600,000		1,600,000			$ 1,900,000
Revenue from Contract with Customer, Including Assessed Tax	302,619,000	322,757,000	914,412,000	965,611,000
VITAS [Member] | Cloud Computing [Member]
Capitalized contract cost	5,600,000		5,600,000
Capitalized contract cost, amortization expense	$ 249,000	$ 249,000	$ 746,000	$ 697,000
Capitalized contract cost, amortization period	5 years 8 months 12 days		5 years 8 months 12 days
Roto-Rooter [Member]
Total purchase price					$ 138,000,000.0
Roto-Rooter [Member] | Cloud Computing [Member]
Number of cloud computing arrangements | item	1		1
Capitalized contract cost	$ 497,000		$ 497,000
Capitalized contract cost, amortization expense	$ 28,000		$ 28,000
Capitalized contract cost, amortization period	36 months		36 months
Reacquired Franchise Rights [Member] | Roto-Rooter [Member]
Intangible assets acquired					$ 59,200,000
Quarterly amortization of reacquired franchise agreements	$ 2,000,000.0		$ 2,000,000.0
Average remaining life			7 years
Reacquired Franchise Rights [Member] | Roto-Rooter [Member] | Annualized Through 2026 [Member]
Quarterly amortization of reacquired franchise agreements			$ 8,100,000
Reacquired Franchise Rights [Member] | Franchise Fees [Member] | Roto-Rooter [Member]
Revenue from Contract with Customer, Including Assessed Tax			470,000
Reacquired Franchise Rights [Member] | Franchise Fees [Member] | Roto-Rooter [Member] | Annualized [Member]
Revenue from Contract with Customer, Including Assessed Tax			$ 1,900,000