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	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Cost, Assets held for sale	$ (7,923)	$ (2,416)
Gross Unrealized Gains, Assets held for sale		(54)
Gross Unrealized Losses,Assets held for sale	1,290
Fair Value, Assets held for sale	(6,633)	(2,470)
Cost, Excluding assets held for sale	311,252	334,486
Gross Unrealized Gains, Excluding assets held for sale	16,500	14,915
Gross Unrealized Losses, Excluding assets held for sale	(29,531)	(5,782)
Fair Value, Excluding assets held for sale	298,221	343,619
Short-term investments | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	14,279	50,358
Fair Value	14,279	50,358
Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Cost	5,301	3,089
Gross Unrealized Gains	408	54
Gross Unrealized Losses	(187)	(194)
Fair Value	5,522	2,949
Fixed maturities | Level 2 | U.S. governmental securities
Debt Securities, Available-for-sale [Line Items]
Cost	1,017	1,069
Gross Unrealized Gains	70	32
Gross Unrealized Losses	(50)	(52)
Fair Value	1,037	1,049
Fixed maturities | Level 2 | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	3,213	2,020
Gross Unrealized Gains	213	22
Gross Unrealized Losses	(137)	(142)
Fair Value	3,289	1,900
Fixed maturities | Level 2 | Other Debt Securities
Debt Securities, Available-for-sale [Line Items]
Cost	1,071
Gross Unrealized Gains	125
Fair Value	1,196
Mutual funds - debt securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	17,018	49,963
Gross Unrealized Gains	231	1,439
Gross Unrealized Losses	(568)	(38)
Fair Value	16,681	51,364
Mutual funds - equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	16,617	16,698
Gross Unrealized Gains	1,500	1,617
Gross Unrealized Losses	(4,368)	(66)
Fair Value	13,749	18,249
Other investment funds
Debt Securities, Available-for-sale [Line Items]
Cost	230,150	186,355
Gross Unrealized Gains	14,067	10,526
Gross Unrealized Losses	(14,000)	(5,472)
Fair Value	230,217	191,409
Equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	35,794	30,423
Gross Unrealized Gains	293	1,333
Gross Unrealized Losses	(11,698)	(12)
Fair Value	24,389	31,744
Other invested assets | Level 2
Debt Securities, Available-for-sale [Line Items]
Cost	16	16
Gross Unrealized Gains	1
Fair Value		16
Fair Value	17
Total Investments
Debt Securities, Available-for-sale [Line Items]
Cost	319,175	336,902
Gross Unrealized Gains	16,500	14,969
Gross Unrealized Losses	(30,821)	(5,782)
Fair Value	$ 304,854	$ 346,089