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PERPETUAL CARE TRUSTS - Contractual Maturities of Debt Securities Held in Perpetual Care Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Perpetual care trusts - Fixed maturities - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year $ 509 $ 354
1 year through 5 years 2,306 1,714
6 years through 10 years 1,816 768
More than 10 years 61 114
U.S. governmental securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year 25 60
1 year through 5 years 450 192
6 years through 10 years 490 684
More than 10 years 61 114
Corporate debt securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year 81 294
1 year through 5 years 1,856 1,522
6 years through 10 years 1,326 $ 84
Other Debt Securities    
Investments Classified by Contractual Maturity Date [Line Items]    
Less than 1 year $ 403