SUPPLEMENTAL CONSOLIDATED CASH FLOW INFORMATION - Schedule of Cash Flow, Supplemental Disclosures (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable
Pre-need/at-need contract originations (sales on credit)	$ (88,719)	$ (88,296)
Cash receipts from sales on credit (post-origination)	72,539	73,991
Changes in accounts receivable, net of allowance	(16,180)	(14,305)
Deferrals:
Cash receipts from customer deposits at origination, net of refunds	115,824	107,847
Withdrawals of realized income from merchandise trusts during the period	7,406	6,699
Pre-need/at-need contract originations (sales on credit)	88,719	88,296
Undistributed merchandise trust investment earnings, net	5,377	8,367
Recognition:
Merchandise trust investment income, net withdrawn as of end of period	(6,629)	(6,985)
Recognized maturities of customer contracts collected as of end of period	(151,016)	(155,915)
Recognized maturities of customer contracts uncollected as of end of period	(20,443)	(24,449)
Changes in customer contract liabilities	$ 39,238	$ 23,860