Basis Of Presentation (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) item	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) item	Jun. 30, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)
Effective tax rate	22.80%	24.70%	23.50%	23.20%
Excess tax benefit on stock options	$ 2,500,000	$ 868,000	$ 3,900,000	$ 4,100,000
Capitalized property and equipment	836,000		836,000			$ 1,900,000
Revenue from Contract with Customer, Including Assessed Tax	305,001,000	319,657,000	611,792,000	642,854,000
VITAS [Member] | Cloud Computing [Member]
Capitalized contract cost	5,600,000		5,600,000
Capitalized contract cost, amortization expense	$ 249,000	$ 249,000	$ 497,000	$ 448,000
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	2		2
Capitalized contract cost	$ 471,000		$ 471,000
Capitalized contract cost, amortization expense			0
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		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