GENERAL - Additional Information (Detail)		3 Months Ended
	Apr. 01, 2020 USD ($)	Mar. 31, 2020 USD ($) Property State Segment shares	Dec. 31, 2019 USD ($) shares	Sep. 30, 2019 USD ($)
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Impairment of long-lived assets | $		$ 0
Cash and cash equivalents | $		27,066,000	$ 34,867,000	$ 27,100,000
Restricted cash | $		20,400,000	$ 21,900,000
Refundable deposit received for divestitures of property | $		$ 5,000,000
Divestiture, number of property in non-binding letter		1
Investment Income Contractual Term		60 months
Debt instrument, variable rate		375.00%
Number of reportable segments | Segment		2
Accounts receivable average cancellation rate basis period		5 years
Lease renewal term description		Certain leases provide the Company with the option to renew for additional periods, with renewal terms that can extend the lease term for periods ranging from 1 to 30 years.
Maximum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Liquid investments purchased with an original maturity		3 months
Product sales, payment term		60 months
Lease renewal term		30 years
Minimum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Lease renewal term		1 year
Senior Notes
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Preferred units, sold | shares		52,083,333
Preferred unit, aggregate purchase price | $		$ 57,500,000
Senior Notes | Private Placement
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Long-term debt, gross | $		$ 385,000,000
StoneMor Operating LLC
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Ownership percentage subsidiaries by the parent		100.00%	100.00%
C-Corporation Conversion | Partnership and LP Sub
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
General partner ownership interest		100.00%
C-Corporation Conversion | Stonemor GP Holdings LLC
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Contribution of common units | shares			5,099,969
Axar Commitment Agreement | Rights Offering | Maximum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Proceeds from the contemplated rights offering | $	$ 17,000,000
Cemetery
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		30
Cemetery | Consolidated Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		16
Cemetery | Unconsolidated Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		14
US and Puerto Rico | Cemetery
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		319
Number of states | State		27
US and Puerto Rico | Cemetery | Wholly Owned Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		289
US and Puerto Rico | Cemetery | Managed Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		30
US and Puerto Rico | Funeral Home
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		88
Number of states | State		17
US and Puerto Rico | Funeral Home | Cemetery Property
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of operating locations		41