PERPETUAL CARE TRUSTS - Aging of Unrealized Losses on Investments in Fixed Maturities and Equity Securities Held in Perpetual Care Trusts (Detail) - Variable Interest Entity, Primary Beneficiary - Perpetual care trusts - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	$ 97,459	$ 57,723
12 Months or more Fair Value	2,871	2,829
Total Fair Value	100,330	60,552
Less than 12 months Unrealized Losses	42,081	5,638
12 Months or more Unrealized Losses	547	144
Total Unrealized Losses	42,628	5,782
Fixed maturities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	1,759	754
12 Months or more Fair Value	2,831	2,829
Total Fair Value	4,590	3,583
Less than 12 months Unrealized Losses	70	50
12 Months or more Unrealized Losses	165	144
Total Unrealized Losses	235	194
Fixed maturities | U.S. governmental securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value		291
12 Months or more Fair Value	1,002	942
Total Fair Value	1,002	1,233
Less than 12 months Unrealized Losses		4
12 Months or more Unrealized Losses	58	48
Total Unrealized Losses	58	52
Fixed maturities | Corporate debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	1,759	463
12 Months or more Fair Value	1,829	1,887
Total Fair Value	3,588	2,350
Less than 12 months Unrealized Losses	70	46
12 Months or more Unrealized Losses	107	96
Total Unrealized Losses	177	142
Mutual funds - debt securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	12,800	2,856
12 Months or more Fair Value	19
Total Fair Value	12,819	2,856
Less than 12 months Unrealized Losses	1,016	38
12 Months or more Unrealized Losses	162
Total Unrealized Losses	1,178	38
Mutual funds - equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	7,476	566
12 Months or more Fair Value	7
Total Fair Value	7,483	566
Less than 12 months Unrealized Losses	6,517	66
12 Months or more Unrealized Losses	207
Total Unrealized Losses	6,724	66
Other investment funds
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	58,418	53,426
Total Fair Value	58,418	53,426
Less than 12 months Unrealized Losses	16,219	5,472
Total Unrealized Losses	16,219	5,472
Equity securities
Investments, Unrealized Loss Position [Line Items]
Less than 12 months Fair Value	17,006	121
12 Months or more Fair Value	5
Total Fair Value	17,011	121
Less than 12 months Unrealized Losses	18,259	12
12 Months or more Unrealized Losses	13
Total Unrealized Losses	18,272	$ 12
Other invested assets
Investments, Unrealized Loss Position [Line Items]
12 Months or more Fair Value	9
Total Fair Value	$ 9