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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 | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 66,252 | $ 60,571
Unrealized Gains | 7,012 | 5,869
Unrealized Losses | (9,361) | (2,905)
Fair Market Value | 63,903 | 63,535
Preneed cemetery trust investments | $ 64,824 | $ 64,047
Preneed cemetery trust investments, fair market value as a percentage of cost (in Percent) | 96.50% | 104.90%
Accrued Investment Income [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | $ 921 | $ 512
Fair Market Value | 921 | 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 | 348 | 4,624
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Fair Market Value | 348 | 4,624
Fair Value, Inputs, Level 1 [Member] | Common stock |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 21,535 | 21,594
Unrealized Gains | 3,984 | 3,399
Unrealized Losses | (6,365) | (1,911)
Fair Market Value | 19,154 | 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 | 12,880 | 4,200
Unrealized Gains | 929 | 238
Unrealized Losses | (986) | (175)
Fair Market Value | 12,823 | 4,263
Fair Value, Inputs, Level 2 [Member] | Corporate debt |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 13,563 | 11,658
Unrealized Gains | 1,041 | 802
Unrealized Losses | (617) | (534)
Fair Market Value | 13,987 | 11,926
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 11,354 | 10,782
Unrealized Gains | 471 | 666
Unrealized Losses | (951) | (106)
Fair Market Value | 10,874 | 11,342
Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Available-for-sale Securities, Amortized Cost Basis | 256 | 324
Unrealized Gains | 0 | 0
Unrealized Losses | (150) | (71)
Fair Market Value | 106 | 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 | 6,316 | 7,156
Unrealized Gains | 587 | 618
Unrealized Losses | (292) | (107)
Fair Market Value | $ 6,611 | $ 7,667

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