PERPETUAL CARE TRUSTS - Additional Information (Detail) - Variable Interest Entity, Primary Beneficiary - Perpetual care trusts	3 Months Ended
	Mar. 31, 2021 USD ($) security	Mar. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Purchases of available for sale securities	$ 15,700,000	$ 5,400,000
Sales, maturities and paydowns of available for sale securities	2,200,000	4,400,000
Other than temporary impairments loss	$ 55,000
Other Than Temporarily Impaired Securities
Debt Securities, Available-for-sale [Line Items]
Number of securities that incurred other than temporary impairment losses | security	6
Trust assets, cost	$ 84,000
Trust assets, fair value	30,000
Other than temporary impairments loss	$ 54,000	$ 0