Receivables from Preneed Trusts Receivables from Preneed Trusts (Composition of Assets Held in Trusts) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	$ 18,498	$ 18,659
Fair Value [Member] | Cash and cash equivalents [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	4,465	4,533
Fair Value [Member] | Fixed income investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	11,390	11,603
Fair Value [Member] | Mutual funds and common stocks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	2,639	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	18,345	18,581
Historical Cost Basis [Member] | Cash and cash equivalents [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	4,465	4,533
Historical Cost Basis [Member] | Fixed income investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	11,390	11,603
Historical Cost Basis [Member] | Mutual funds and common stocks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	2,486	2,440
Historical Cost Basis [Member] | Annuities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	$ 4	$ 5