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Receivables from Preneed Trusts Receivables from Preneed Trusts (Composition of Assets Held in Trusts) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Fair Value [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust $ 18,624 $ 17,555
Fair Value [Member] | Cash and cash equivalents [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 4,443 4,172
Fair Value [Member] | Fixed income investments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 11,558 10,668
Fair Value [Member] | Mutual funds and common stocks [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 2,618 2,709
Fair Value [Member] | Annuities [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 5 6
Historical Cost Basis [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 18,545 17,601
Historical Cost Basis [Member] | Cash and cash equivalents [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 4,443 4,172
Historical Cost Basis [Member] | Fixed income investments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 11,558 10,668
Historical Cost Basis [Member] | Mutual funds and common stocks [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust 2,539 2,755
Historical Cost Basis [Member] | Annuities [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Assets held-in-trust $ 5 $ 6