Receivables from Preneed Trusts Receivables from Preneed Trusts (Composition of Assets Held in Trusts) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	$ 15,804	$ 14,666
Fair Value [Member] | Cash and cash equivalents [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	4,054	3,378
Fair Value [Member] | Fixed income investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	9,218	8,809
Fair Value [Member] | Mutual funds and common stocks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	2,516	2,463
Fair Value [Member] | Annuities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	16	16
Historical Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	15,780	14,658
Historical Cost Basis [Member] | Cash and cash equivalents [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	4,054	3,378
Historical Cost Basis [Member] | Fixed income investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	9,218	8,809
Historical Cost Basis [Member] | Mutual funds and common stocks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	2,492	2,455
Historical Cost Basis [Member] | Annuities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Assets held-in-trust	$ 16	$ 16