EXIT AND DISPOSAL ACTIVITIES - Summary of Severance Liability Recognized for Reductions in Workforce (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost And Reserve [Line Items]
Severance liability, beginning balance	$ 150
Accruals	450	$ 1,543
Cash payments	(600)	(1,393)
Severance liability, ending balance		150
Corporate
Restructuring Cost And Reserve [Line Items]
Severance liability, beginning balance	64
Accruals	201	583
Cash payments	(265)	(519)
Severance liability, ending balance		64
Cemetery | Operating
Restructuring Cost And Reserve [Line Items]
Severance liability, beginning balance	86
Accruals	229	935
Cash payments	(315)	(849)
Severance liability, ending balance		86
Funeral Home | Operating
Restructuring Cost And Reserve [Line Items]
Accruals	20	25
Cash payments	$ (20)	$ (25)