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Receivables from Preneed Trusts Receivables from Preneed Trusts (Composition of Asset Held in Trusts) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Historical Cost Basis    
Investment Holdings [Line Items]    
Assets Held-in-trust $ 14,658 $ 13,963
Historical Cost Basis | Cash and Cash Equivalents    
Investment Holdings [Line Items]    
Assets Held-in-trust 3,378 2,898
Historical Cost Basis | Fixed Income Investments    
Investment Holdings [Line Items]    
Assets Held-in-trust 8,809 8,423
Historical Cost Basis | Mutual Funds And Common Stocks    
Investment Holdings [Line Items]    
Assets Held-in-trust 2,455 2,626
Historical Cost Basis | Annuities    
Investment Holdings [Line Items]    
Assets Held-in-trust 16 16
Fair Value    
Investment Holdings [Line Items]    
Assets Held-in-trust 14,666 13,965
Fair Value | Cash and Cash Equivalents    
Investment Holdings [Line Items]    
Assets Held-in-trust 3,378 2,898
Fair Value | Fixed Income Investments    
Investment Holdings [Line Items]    
Assets Held-in-trust 8,809 8,426
Fair Value | Mutual Funds And Common Stocks    
Investment Holdings [Line Items]    
Assets Held-in-trust 2,463 2,625
Fair Value | Annuities    
Investment Holdings [Line Items]    
Assets Held-in-trust $ 16 $ 16