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Cemetery Perpetual Care Trust Investments (Cost and fair market values associated with the trust investments held in perpetual care trust funds) (Details) - Perpetual Care Trust Invesments [Member] - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2017 | Dec. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cemetary perpetual care trust investments |  | $ 47,539 | $ 46,889
Fair market value as a percentage of cost |  | 99.50% | 99.30%
Impairment charge, other than temporary decline in fair value of investments | $ 400 |  |
Trust Securities [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | $ 47,377 | $ 46,708
Unrealized Gains |  | 2,590 | 2,764
Unrealized Losses |  | (2,845) | (3,072)
Fair Market Value |  | 47,122 | 46,400
Accrued Investment Income [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 417 | 489
Fair Market Value |  | 417 | 489
Fair Value, Inputs, Level 1 [Member] | Cash and Money Market Accounts [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 3,106 | 6,522
Unrealized Gains |  | 0 | 0
Unrealized Losses |  | 0 | 0
Fair Market Value |  | 3,106 | 6,522
Fair Value, Inputs, Level 1 [Member] | Common Stock [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 14,609 | 8,259
Unrealized Gains |  | 1,450 | 1,382
Unrealized Losses |  | (1,883) | (1,146)
Fair Market Value |  | 14,176 | 8,495
Fair Value, Inputs, Level 2 [Member] | Municipal Bonds [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  |  | 365
Unrealized Gains |  |  | 13
Unrealized Losses |  |  | (3)
Fair Market Value |  |  | 375
Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 3,546 | 5,100
Unrealized Gains |  | 164 | 99
Unrealized Losses |  | (176) | (435)
Fair Market Value |  | 3,534 | 4,764
Fair Value, Inputs, Level 2 [Member] | Corporate Debt [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 13,121 | 13,715
Unrealized Gains |  | 639 | 966
Unrealized Losses |  | (424) | (821)
Fair Market Value |  | 13,336 | 13,860
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 11,396 | 11,323
Unrealized Gains |  | 126 | 5
Unrealized Losses |  | (348) | (664)
Fair Market Value |  | 11,174 | 10,664
Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 695 | 569
Unrealized Gains |  | 159 | 223
Unrealized Losses |  | (13) | (3)
Fair Market Value |  | 841 | 789
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member] |  |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |  |
Cost |  | 904 | 855
Unrealized Gains |  | 52 | 76
Unrealized Losses |  | (1) | 0
Fair Market Value |  | $ 955 | $ 931

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