PERPETUAL CARE TRUSTS - Cost and Market Value Associated with Assets Held in Perpetual Care Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Perpetual care trusts - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Cost, Assets held for sale	$ (24,002)	$ (2,416)
Gross Unrealized Gains, Assets held for sale	(101)	(54)
Gross Unrealized Losses,Assets held for sale	2,186
Fair Value, Assets held for sale	(21,917)	(2,470)
Cost, Excluding assets held for sale	312,078	334,486
Gross Unrealized Gains, Excluding assets held for sale	13,196	14,915
Gross Unrealized Losses, Excluding assets held for sale	(40,442)	(5,782)
Fair Value, Excluding assets held for sale	284,832	343,619
Short-term investments | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	32,403	50,358
Fair Value	32,403	50,358
Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Cost	3,823	3,089
Gross Unrealized Gains	109	54
Gross Unrealized Losses	(235)	(194)
Fair Value	3,697	2,949
Fixed maturities | Level 2 | U.S. governmental securities
Debt Securities, Available-for-sale [Line Items]
Cost	1,072	1,069
Gross Unrealized Gains	90	32
Gross Unrealized Losses	(58)	(52)
Fair Value	1,104	1,049
Fixed maturities | Level 2 | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	2,751	2,020
Gross Unrealized Gains	19	22
Gross Unrealized Losses	(177)	(142)
Fair Value	2,593	1,900
Mutual funds - debt securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	17,631	49,963
Gross Unrealized Gains	58	1,439
Gross Unrealized Losses	(1,178)	(38)
Fair Value	16,511	51,364
Mutual funds - equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	16,964	16,698
Gross Unrealized Gains	605	1,617
Gross Unrealized Losses	(6,724)	(66)
Fair Value	10,845	18,249
Other investment funds
Debt Securities, Available-for-sale [Line Items]
Cost	230,401	186,355
Gross Unrealized Gains	12,474	10,526
Gross Unrealized Losses	(16,219)	(5,472)
Fair Value	226,656	191,409
Equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	35,467	30,423
Gross Unrealized Gains	51	1,333
Gross Unrealized Losses	(18,272)	(12)
Fair Value	17,246	31,744
Other invested assets | Level 2
Debt Securities, Available-for-sale [Line Items]
Cost		16
Fair Value		16
Cost	(609)
Fair Value	(609)
Total Investments
Debt Securities, Available-for-sale [Line Items]
Cost	336,080	336,902
Gross Unrealized Gains	13,297	14,969
Gross Unrealized Losses	(42,628)	(5,782)
Fair Value	$ 306,749	$ 346,089