Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Mar. 21, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Annual Report	true
Document Transition Report	false
Entity Registrant Name	STONEMOR INC.
Entity Central Index Key	0001753886
Trading Symbol	STON
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		118,337,475
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-39172
Entity Tax Identification Number	80-0103152
Entity Address, Address Line One	3331 Street Road
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Bensalem
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19020
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 70.8
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Common Stock, $0.01 par value per share
Security Exchange Name	NYSE
City Area Code	215
Local Phone Number	826-2800
ICFR Auditor Attestation Flag	false
Auditor Name	GRANT THORNTON LLP
Auditor Location	Philadelphia, Pennsylvania
Auditor Firm ID	248