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Basis Of Presentation (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
Basis Of Presentation (Narrative) (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2019	Dec. 31, 2022
Effective tax rate	23.90%	24.20%
Excess tax benefit on stock options	$ 1,700,000	$ 1,400,000
Capitalized property and equipment	1,700,000			$ 1,900,000
Revenue from Contract with Customer, Including Assessed Tax	319,105,000	306,791,000
VITAS [Member] \| Cloud Computing [Member]
Capitalized contract cost	5,600,000
Capitalized contract cost, amortization expense	$ 249,000	$ 249,000
Capitalized contract cost, amortization period	5 years 8 months 12 days
Roto-Rooter [Member]
Total purchase price			$ 138,000,000.0
Reacquired Franchise Rights [Member] \| Roto-Rooter [Member]
Intangible assets acquired			$ 59,200,000
Quarterly amortization of reacquired franchise agreements	$ 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