SUPPLEMENTAL CONSOLIDATED CASH FLOW INFORMATION - Schedule of Cash Flow, Supplemental Disclosures (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable
Pre-need/at-need contract originations (sales on credit)	$ (129,784)	$ (117,716)
Cash receipts from sales on credit (post-origination)	112,255	97,263
Changes in accounts receivable, net of allowance	(17,529)	(20,453)
Deferrals:
Cash receipts from customer deposits at origination, net of refunds	178,934	154,553
Withdrawals of realized income from merchandise trusts during the period	15,571	10,167
Pre-need/at-need contract originations (sales on credit)	129,784	117,716
Undistributed merchandise trust investment earnings, net	22,843	15,444
Recognition:
Merchandise trust investment income, net withdrawn as of end of period	(13,516)	(6,816)
Recognized maturities of customer contracts collected as of end of period	(222,477)	(205,852)
Recognized maturities of customer contracts uncollected as of end of period	(23,369)	(23,601)
Changes in customer contract liabilities	$ 87,770	$ 61,611