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Trust Investments (Cost and fair market values associated with the trust investments held in perpetual care trust) (Details) - Perpetual Care Trust Invesments [Member] - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 65,406 | $ 60,571
Unrealized Gains | 1,846 | 5,869
Unrealized Losses | (15,371) | (2,905)
Fair Market Value | 51,881 | 63,535
Preneed cemetery trust investments | $ 52,677 | $ 64,047
Preneed cemetery trust investments, fair market value as a percentage of cost (in Percent) | 79.30% | 104.90%
Accrued Investment Income [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 796 | $ 512
Fair Market Value | 796 | 512
Fair Value, Inputs, Level 1 [Member] | Cash and Money Market Accounts [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 4,128 | 4,624
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 4,128 | 4,624
Fair Value, Inputs, Level 1 [Member] | Common stock |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 26,621 | 21,594
Unrealized Gains | 1,261 | 3,399
Unrealized Losses | (8,736) | (1,911)
Fair Market Value | 19,146 | 23,082
Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 7,041 | 4,200
Unrealized Gains | 139 | 238
Unrealized Losses | (1,448) | (175)
Fair Market Value | 5,732 | 4,263
Fair Value, Inputs, Level 2 [Member] | Corporate debt |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 12,357 | 11,658
Unrealized Gains | 277 | 802
Unrealized Losses | (2,345) | (534)
Fair Market Value | 10,289 | 11,926
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 11,988 | 10,782
Unrealized Gains | 45 | 666
Unrealized Losses | (2,138) | (106)
Fair Market Value | 9,895 | 11,342
Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 347 | 324
Unrealized Gains | 0 | 0
Unrealized Losses | (193) | (71)
Fair Market Value | 154 | 253
Fair Value, Inputs, Level 2 [Member] | Fixed Income Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis |  | 233
Unrealized Gains |  | 146
Unrealized Losses |  | (1)
Fair Market Value |  | 378
Fair Value, Inputs, Level 2 [Member] | Other Investments [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 2,924 | 7,156
Unrealized Gains | 124 | 618
Unrealized Losses | (511) | (107)
Fair Market Value | $ 2,537 | $ 7,667

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