Revenue Recognition (Schedule Of Patient Care Service Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	$ 306,791	$ 323,197
Net revenue	299,189	315,788
Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	257,636	263,754
Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	19,578	27,349
Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	26,570	29,156
Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	303,784	320,259
All Other Revenue- Self-pay, Respite Care, Etc. [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	3,007	2,938
Medicare Cap Adjustment [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Medicare cap adjustment	(2,500)	(1,500)
Implicit Price Concessions [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Implicit price concessions	(2,985)	(3,244)
Room And Board, Net [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Room and board, net	(2,117)	(2,665)
Medicare [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	241,337	246,064
Medicare [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	17,977	24,907
Medicare [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	23,427	25,438
Medicare [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	282,741	296,409
Medicaid [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	10,907	11,579
Medicaid [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	814	1,259
Medicaid [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	1,963	2,473
Medicaid [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	13,684	15,311
Commercial [Member] | Routine Home Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	5,392	6,111
Commercial [Member] | Continuous Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	787	1,183
Commercial [Member] | Inpatient Care [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	1,180	1,245
Commercial [Member] | Care Services Total [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Care service revenue	$ 7,359	$ 8,539