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Preneed Activities Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | $ 3,529,644 | $ 3,434,980
Accumulated Gross Unrealized Gain, before Tax | 288,874 | 175,867
Accumulated Gross Unrealized Loss, before Tax | (206,201) | (395,711)
Available-for-sale Securities, Fair Value | 3,612,317 | 3,215,136
Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,198,306 | 1,307,042
Accumulated Gross Unrealized Gain, before Tax | 108,376 | 94,883
Accumulated Gross Unrealized Loss, before Tax | (9,864) | (31,341)
Available-for-sale Securities, Fair Value | 1,296,818 | 1,370,584
Estimate of Fair Value Measurement [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 4,727,950 | 4,742,022
Accumulated Gross Unrealized Gain, before Tax | 397,250 | 270,750
Accumulated Gross Unrealized Loss, before Tax | (216,065) | (427,052)
Available-for-sale Securities, Fair Value | 4,909,135 | 4,585,720
Fixed Income Commingled funds [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 419,253 | 419,206
Accumulated Gross Unrealized Gain, before Tax | 2,721 | 2,419
Accumulated Gross Unrealized Loss, before Tax | (9,559) | (18,981)
Available-for-sale Securities, Fair Value | 412,415 | 402,644
Commingled funds - Equity [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 208,179 | 205,789
Accumulated Gross Unrealized Gain, before Tax | 35,698 | 19,567
Accumulated Gross Unrealized Loss, before Tax | (305) | (11,723)
Available-for-sale Securities, Fair Value | 243,572 | 213,633
Private Equity Funds | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 195,000 | 215,618
Accumulated Gross Unrealized Gain, before Tax | 69,957 | 72,897
Accumulated Gross Unrealized Loss, before Tax | 0 | (637)
Available-for-sale Securities, Fair Value | 264,957 | 287,878
Money Market Funds [Member] | Reported at net asset value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 375,874 | 466,429
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Available-for-sale Securities, Fair Value | 375,874 | 466,429
Fair Value, Inputs, Level 2 | US Treasury Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 47,311 | 49,187
Accumulated Gross Unrealized Gain, before Tax | 250 | 153
Accumulated Gross Unrealized Loss, before Tax | (291) | (448)
Available-for-sale Securities, Fair Value | 47,270 | 48,892
Fair Value, Inputs, Level 2 | Foreign Government Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 45,738 | 56,343
Accumulated Gross Unrealized Gain, before Tax | 73 | 23
Accumulated Gross Unrealized Loss, before Tax | (1,138) | (1,797)
Available-for-sale Securities, Fair Value | 44,673 | 54,569
Fair Value, Inputs, Level 2 | Corporate Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 10,713 | 19,869
Accumulated Gross Unrealized Gain, before Tax | 5 | 13
Accumulated Gross Unrealized Loss, before Tax | (256) | (516)
Available-for-sale Securities, Fair Value | 10,462 | 19,366
Fair Value, Inputs, Level 2 | Residential Mortgage Backed Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 3,127 | 3,611
Accumulated Gross Unrealized Gain, before Tax | 6 | 10
Accumulated Gross Unrealized Loss, before Tax | (15) | (50)
Available-for-sale Securities, Fair Value | 3,118 | 3,571
Fair Value, Inputs, Level 2 | Asset-backed Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 135 | 142
Accumulated Gross Unrealized Gain, before Tax | 2 | 2
Accumulated Gross Unrealized Loss, before Tax | (9) | (11)
Available-for-sale Securities, Fair Value | 128 | 133
Fair Value, Inputs, Level 2 | Preferred Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 6,086 | 9,058
Accumulated Gross Unrealized Gain, before Tax | 496 | 180
Accumulated Gross Unrealized Loss, before Tax | (114) | (412)
Available-for-sale Securities, Fair Value | 6,468 | 8,826
Fair Value, Inputs, Level 1 | US Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,283,369 | 1,236,513
Accumulated Gross Unrealized Gain, before Tax | 237,651 | 149,233
Accumulated Gross Unrealized Loss, before Tax | (67,561) | (138,141)
Available-for-sale Securities, Fair Value | 1,453,459 | 1,247,605
Fair Value, Inputs, Level 1 | Canada Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 36,092 | 34,821
Accumulated Gross Unrealized Gain, before Tax | 9,614 | 9,082
Accumulated Gross Unrealized Loss, before Tax | (1,110) | (3,026)
Available-for-sale Securities, Fair Value | 44,596 | 40,877
Fair Value, Inputs, Level 1 | Other International Common Stock Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 79,441 | 77,676
Accumulated Gross Unrealized Gain, before Tax | 14,482 | 6,057
Accumulated Gross Unrealized Loss, before Tax | (1,984) | (10,275)
Available-for-sale Securities, Fair Value | 91,939 | 73,458
Fair Value, Inputs, Level 1 | Equity Funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 815,033 | 760,887
Accumulated Gross Unrealized Gain, before Tax | 21,692 | 7,104
Accumulated Gross Unrealized Loss, before Tax | (87,972) | (151,853)
Available-for-sale Securities, Fair Value | 748,753 | 616,138
Fair Value, Inputs, Level 1 | Fixed Income Funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 1,195,893 | 1,180,325
Accumulated Gross Unrealized Gain, before Tax | 4,201 | 800
Accumulated Gross Unrealized Loss, before Tax | (45,751) | (89,179)
Available-for-sale Securities, Fair Value | 1,154,343 | 1,091,946
Fair Value, Inputs, Level 3 | Other Investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost Basis | 6,706 | 6,548
Accumulated Gross Unrealized Gain, before Tax | 402 | 3,210
Accumulated Gross Unrealized Loss, before Tax | 0 | (3)
Available-for-sale Securities, Fair Value | $ 7,108 | $ 9,755

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