Revenue Recognition (Schedule Of Patient Care Service Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	$ 319,105	$ 306,791
Net revenue	310,478	299,189
Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	267,050	257,636
Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	19,941	19,578
Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	29,093	26,570
Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	316,084	303,784
All Other Revenue- Self-pay, Respite Care, Etc. [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	3,021	3,007
Medicare Cap Adjustment [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Medicare cap adjustment	(2,750)	(2,500)
Implicit Price Concessions [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Implicit price concessions	(3,108)	(2,985)
Room And Board, Net [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Room and board, net	(2,769)	(2,117)
Medicare [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	250,916	241,337
Medicare [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	18,508	17,977
Medicare [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	25,519	23,427
Medicare [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	294,943	282,741
Medicaid [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	10,568	10,907
Medicaid [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	650	814
Medicaid [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	2,432	1,963
Medicaid [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	13,650	13,684
Commercial [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	5,566	5,392
Commercial [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	783	787
Commercial [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	1,142	1,180
Commercial [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	$ 7,491	$ 7,359