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Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items] |  |
Document Period End Date | Sep. 30, 2018 |
Amortized Cost Basis | $ 3,442,530 | $ 3,260,648
Accumulated Gross Unrealized Gain, before Tax | 372,154 | 367,569
Accumulated Gross Unrealized Loss, before Tax | (110,279) | (57,889)
Available-for-sale Securities, Fair Value | 3,704,405 | 3,570,328
Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,226,471 | 1,122,537
Accumulated Gross Unrealized Gain, before Tax | 111,408 | 64,692
Accumulated Gross Unrealized Loss, before Tax | (18,877) | (8,009)
Available-for-sale Securities, Fair Value | 1,319,002 | 1,179,220
Estimate of Fair Value Measurement [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 4,669,001 | 4,383,185
Accumulated Gross Unrealized Gain, before Tax | 483,562 | 432,261
Accumulated Gross Unrealized Loss, before Tax | (129,156) | (65,898)
Available-for-sale Securities, Fair Value | 5,023,407 | 4,749,548
Fixed Income Commingled funds [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 427,226 | 454,242
Accumulated Gross Unrealized Gain, before Tax | 2,462 | 235
Accumulated Gross Unrealized Loss, before Tax | (17,359) | (5,860)
Available-for-sale Securities, Fair Value | 412,329 | 448,617
Commingled funds - Equity [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 206,040 | 214,000
Accumulated Gross Unrealized Gain, before Tax | 40,558 | 12,826
Accumulated Gross Unrealized Loss, before Tax | (2) | 0
Available-for-sale Securities, Fair Value | 246,596 | 226,826
Private Equity Funds | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 212,462 | 166,860
Accumulated Gross Unrealized Gain, before Tax | 68,388 | 51,631
Accumulated Gross Unrealized Loss, before Tax | (1,516) | (2,149)
Available-for-sale Securities, Fair Value | 279,334 | 216,342
Money Market Funds [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 380,743 | 287,435
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Available-for-sale Securities, Fair Value | 380,743 | 287,435
Fair Value, Inputs, Level 2 | US Treasury Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 49,924 | 48,805
Accumulated Gross Unrealized Gain, before Tax | 14 | 14
Accumulated Gross Unrealized Loss, before Tax | (621) | (117)
Available-for-sale Securities, Fair Value | 49,317 | 48,702
Fair Value, Inputs, Level 2 | Foreign Government Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 59,507 | 81,500
Accumulated Gross Unrealized Gain, before Tax | 36 | 160
Accumulated Gross Unrealized Loss, before Tax | (1,738) | (1,089)
Available-for-sale Securities, Fair Value | 57,805 | 80,571
Fair Value, Inputs, Level 2 | Corporate Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 24,962 | 13,540
Accumulated Gross Unrealized Gain, before Tax | 67 | 327
Accumulated Gross Unrealized Loss, before Tax | (336) | (170)
Available-for-sale Securities, Fair Value | 24,693 | 13,697
Fair Value, Inputs, Level 2 | Residential Mortgage Backed Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 3,809 | 3,279
Accumulated Gross Unrealized Gain, before Tax | 10 | 16
Accumulated Gross Unrealized Loss, before Tax | (91) | (14)
Available-for-sale Securities, Fair Value | 3,728 | 3,281
Fair Value, Inputs, Level 2 | Asset-backed Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 142 | 320
Accumulated Gross Unrealized Gain, before Tax | 2 | 15
Accumulated Gross Unrealized Loss, before Tax | (10) | (10)
Available-for-sale Securities, Fair Value | 134 | 325
Fair Value, Inputs, Level 2 | Preferred Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 10,080 | 7,834
Accumulated Gross Unrealized Gain, before Tax | 891 | 385
Accumulated Gross Unrealized Loss, before Tax | (186) | (139)
Available-for-sale Securities, Fair Value | 10,785 | 8,080
Fair Value, Inputs, Level 1 | US Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,208,054 | 1,161,015
Accumulated Gross Unrealized Gain, before Tax | 295,891 | 266,822
Accumulated Gross Unrealized Loss, before Tax | (42,913) | (24,739)
Available-for-sale Securities, Fair Value | 1,461,032 | 1,403,098
Fair Value, Inputs, Level 1 | Canada Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 36,162 | 30,762
Accumulated Gross Unrealized Gain, before Tax | 11,804 | 12,545
Accumulated Gross Unrealized Loss, before Tax | (1,425) | (522)
Available-for-sale Securities, Fair Value | 46,541 | 42,785
Fair Value, Inputs, Level 1 | Other International Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 75,039 | 63,510
Accumulated Gross Unrealized Gain, before Tax | 10,707 | 13,174
Accumulated Gross Unrealized Loss, before Tax | (4,613) | (2,834)
Available-for-sale Securities, Fair Value | 81,133 | 73,850
Fair Value, Inputs, Level 1 | Equity Funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 728,307 | 613,934
Accumulated Gross Unrealized Gain, before Tax | 45,012 | 59,100
Accumulated Gross Unrealized Loss, before Tax | (12,089) | (4,312)
Available-for-sale Securities, Fair Value | 761,230 | 668,722
Fair Value, Inputs, Level 1 | Fixed Income Funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,231,818 | 1,230,196
Accumulated Gross Unrealized Gain, before Tax | 3,492 | 11,897
Accumulated Gross Unrealized Loss, before Tax | (46,257) | (23,943)
Available-for-sale Securities, Fair Value | 1,189,053 | 1,218,150
Fair Value, Inputs, Level 3 | Other Investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 14,726 | 5,953
Accumulated Gross Unrealized Gain, before Tax | 4,228 | 3,114
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Available-for-sale Securities, Fair Value | $ 18,954 | $ 9,067

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