Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 16, 2021
Document Information Line Items
Entity Registrant Name	MERIDA MERGER CORP. I
Trading Symbol	MCMJ
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		16,371,940
Amendment Flag	false
Entity Central Index Key	0001785592
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-39119
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-2266022
Entity Address, Address Line One	641 Lexington Avenue,
Entity Address, Address Line Two	18th Floor
Entity Address, City or Town	New York,
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10022
City Area Code	(917)
Local Phone Number	745-7085
Title of 12(b) Security	Common stock, par value $0.0001 per share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes