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, 2022	Dec. 31, 2021
Short-term investments | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	$ 20,178	$ 25,674
Fair Value	20,178	25,674
Fixed maturities
Debt Securities, Available-for-sale [Line Items]
Cost	11	12
Gross Unrealized Gains	1	2
Fair Value	12	14
Fixed maturities | Level 2 | U.S. governmental securities
Debt Securities, Available-for-sale [Line Items]
Cost	11	12
Gross Unrealized Gains	1	2
Fair Value	12	14
Mutual funds - debt securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	39	2,306
Gross Unrealized Gains	2	28
Gross Unrealized Losses	(1)	(35)
Fair Value	40	2,299
Mutual funds - equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	92	3,894
Gross Unrealized Gains	329	1,341
Gross Unrealized Losses	(3)	(63)
Fair Value	418	5,172
Other investment funds
Debt Securities, Available-for-sale [Line Items]
Cost	300,248	285,826
Gross Unrealized Gains	17,611	14,554
Gross Unrealized Losses	(2,479)	(2,776)
Fair Value	315,380	297,604
Equity securities | Level 1
Debt Securities, Available-for-sale [Line Items]
Cost	6,648	6,817
Gross Unrealized Gains	2,909	1,661
Gross Unrealized Losses	(182)	(113)
Fair Value	9,375	8,365
Other invested assets | Level 2
Debt Securities, Available-for-sale [Line Items]
Cost	9	9
Gross Unrealized Gains	1	1
Fair Value	10	10
Total Investments
Debt Securities, Available-for-sale [Line Items]
Cost	327,225	324,538
Gross Unrealized Gains	20,853	17,587
Gross Unrealized Losses	(2,665)	(2,987)
Fair Value	$ 345,413	$ 339,138