SUPPLEMENTAL CONSOLIDATED CASH FLOW INFORMATION - Schedule of Cash Flow, Supplemental Disclosures (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts Receivable
Pre-need/at-need contract originations (sales on credit)	$ (34,759)	$ (34,176)
Cash receipts from sales on credit (post-origination)	29,984	27,333
Changes in accounts receivable, net of allowance	(4,775)	(6,843)
Deferrals:
Cash receipts from customer deposits at origination, net of refunds	46,899	44,683
Withdrawals of realized income from merchandise trusts during the period	4,129	3,220
Pre-need/at-need contract originations (sales on credit)	34,759	34,176
Undistributed merchandise trust investment earnings, net	11,188	4,881
Recognition:
Merchandise trust investment income, net withdrawn as of end of period	(3,385)	(2,149)
Recognized maturities of customer contracts collected as of end of period	(50,891)	(52,862)
Recognized maturities of customer contracts uncollected as of end of period	(9,025)	(9,351)
Changes in customer contract liabilities	$ 33,674	$ 22,598