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Revenue Recognition (Schedule Of Patient Care Service Revenue) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | $ 1,231,010 | $ 1,289,433 | $ 1,368,489
Net revenue | 1,201,564 | 1,261,246 | 1,334,667
Routine Home Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 1,039,211 | 1,069,766 | 1,106,358
Continuous Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 77,000 | 94,338 | 136,011
Inpatient Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 102,361 | 113,187 | 114,956
Care Services Total [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 1,218,572 | 1,277,291 | 1,357,325
All Other Revenue- Self-pay, Respite Care, Etc. [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 12,438 | 12,142 | 11,164
Medicare Cap Adjustment [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Medicare cap adjustment | (7,868) | (6,597) | (6,678)
Implicit Price Concessions [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Implicit price concessions | (12,004) | (11,530) | (14,970)
Room And Board, Net [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Room and board, net | (9,574) | (10,060) | (12,174)
Medicare [Member] | Routine Home Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 973,206 | 997,846 | 1,033,487
Medicare [Member] | Continuous Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 70,712 | 85,626 | 123,696
Medicare [Member] | Inpatient Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 89,866 | 98,243 | 100,259
Medicare [Member] | Care Services Total [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 1,133,784 | 1,181,715 | 1,257,442
Medicaid [Member] | Routine Home Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 43,340 | 46,785 | 48,813
Medicaid [Member] | Continuous Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 3,159 | 4,689 | 6,344
Medicaid [Member] | Inpatient Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 7,533 | 9,486 | 9,646
Medicaid [Member] | Care Services Total [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 54,032 | 60,960 | 64,803
Commercial [Member] | Routine Home Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 22,665 | 25,135 | 24,058
Commercial [Member] | Continuous Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 3,129 | 4,023 | 5,971
Commercial [Member] | Inpatient Care [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | 4,962 | 5,458 | 5,051
Commercial [Member] | Care Services Total [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Care service revenue | $ 30,756 | $ 34,616 | $ 35,080

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