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Summary Of Significant Accounting Policies (Narrative) (Details) | 12 Months Ended |
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Dec. 31, 2019 USD ($) item entity | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jan. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of wholly-owned subsidiaries | entity | 2 |  |  |
Accounts payable | $ 51,101,000 | $ 50,150,000 |  |
Lease right of use assets | 111,652,000 |  |  |
Lease liabilities | $ 125,936,000 |  |  |
Weighted average rate | 3.30% |  |  |
Number of cloud computing arrangements | item | 2 |  |  |
Advertising expense in continuing operations | $ 49,500,000 | 47,000,000.0 | $ 40,900,000 |
Adjustments to casualty and workers compensation accrual, net pretax debits/(credits) | $ (1,664,000) | $ (3,437,000) | (1,800,000) |
Historical claims data, period of time | 10 years |  |  |
Net tax benefit |  |  | $ (8,305,000) |
The Act 2017 To 2022 [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Bonus depreciation on personal tangible property expenditures, percentage | 100.00% |  |  |
The Act 2023 To 2026 [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Bonus depreciation on personal tangible property expenditures, percentage | 100.00% |  |  |
Total Assets [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 5.00% |  |  |
Total Current Liabilities [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 5.00% |  |  |
Total Liabilities [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 5.00% |  |  |
Roto Rooter And Corporate Office [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Exposure on single claim | $ 750,000 |  |  |
Roto-Rooter [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of operating segments | item | 1 |  |  |
Percent of population serviced | 90.00% |  |  |
Roto-Rooter [Member] | Sales Revenue [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 34.00% | 33.00% | 31.00% |
VITAS [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of service providers | item | 1 |  |  |
Exposure on single claim | $ 1,000,000 |  |  |
Professional liability and other risks, insurance deductible | $ 750,000 |  |  |
VITAS [Member] | Sales Revenue [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 66.00% | 67.00% | 69.00% |
Medicare [Member] | Accounts Receivable [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 71.00% | 68.00% |  |
Medicaid [Member] | Accounts Receivable [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 24.00% | 26.00% |  |
Medicare And Medicaid [Member] | Accounts Receivable [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk, percentage | 75.00% |  |  |
ASU 2016-02 [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Lease right of use assets |  |  |  | $ 93,100,000
Lease liabilities |  |  |  | $ 104,300,000
Weighted average rate |  |  |  | 3.47%
Cloud Computing [Member] | ASU No. 2018-15 [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Capitalized contract cost | $ 5,700,000 |  |  |
Capitalized contract cost, amortization expense | $ 0 |  |  |

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