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, 2019	Dec. 31, 2018
Short-term investments | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	$ 6,564	$ 12,835
Fair Value	6,564	12,835
Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Cost	3,139	5,843
Gross Unrealized Gains	52	165
Gross Unrealized Losses	(310)	(442)
Fair Value	2,881	5,566
Fixed maturities | Level 2 | U.S. governmental securities
Debt Securities, Available-for-sale [Line Items]
Cost	1,117	960
Gross Unrealized Gains	35	4
Gross Unrealized Losses	(89)	(121)
Fair Value	1,063	843
Fixed maturities | Level 2 | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	2,022	4,883
Gross Unrealized Gains	17	161
Gross Unrealized Losses	(221)	(321)
Fair Value	1,818	4,723
Mutual funds - debt securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	106,095	108,451
Gross Unrealized Gains	3,673	227
Gross Unrealized Losses	(15)	(837)
Fair Value	109,753	107,841
Mutual funds - equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	16,894	19,660
Gross Unrealized Gains	2,483	304
Gross Unrealized Losses	(24)	(142)
Fair Value	19,353	19,822
Other investment funds
Debt Securities, Available-for-sale [Line Items]
Cost	184,121	165,284
Gross Unrealized Gains	7,597	3,039
Gross Unrealized Losses	(4,313)	(4,607)
Fair Value	187,405	163,716
Equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	15,436	20,025
Gross Unrealized Gains	2,001	826
Gross Unrealized Losses	(104)	(145)
Fair Value	17,333	20,706
Other invested assets | Level 2
Debt Securities, Available-for-sale [Line Items]
Cost	19	56
Gross Unrealized Gains		20
Fair Value	19	76
Total Investments
Debt Securities, Available-for-sale [Line Items]
Cost	332,268	332,154
Gross Unrealized Gains	15,806	4,581
Gross Unrealized Losses	(4,766)	(6,173)
Fair Value	$ 343,308	$ 330,562