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Receivables from Preneed Trusts Receivables from Preneed Trusts (Composition of Assets Held in Trusts) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Fair Value [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust $ 18,150 $ 18,659
Fair Value [Member] | Cash and cash equivalents [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 4,425 4,533
Fair Value [Member] | Fixed income investments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 11,324 11,603
Fair Value [Member] | Mutual funds and common stocks [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 2,397 2,518
Fair Value [Member] | Annuities [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 4 5
Historical Cost Basis [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 18,012 18,581
Historical Cost Basis [Member] | Cash and cash equivalents [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 4,425 4,533
Historical Cost Basis [Member] | Fixed income investments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 11,324 11,603
Historical Cost Basis [Member] | Mutual funds and common stocks [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 2,259 2,440
Historical Cost Basis [Member] | Annuities [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust $ 4 $ 5