| Cover | Oct. 07, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 7, 2021 |
| Entity File Number | 001-39119 |
| Entity Registrant Name | MERIDA MERGER CORP. I |
| Entity Central Index Key | 0001785592 |
| Entity Tax Identification Number | 84-2266022 |
| Entity Incorporation, State or Country Code | DE |
| 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 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Units, each consisting of one share of common stock and one-half of one redeemable warrant | |
| Title of 12(b) Security | Units, each consisting of one share of common stock and one-half of one redeemable warrant |
| Trading Symbol | MCMJU |
| Security Exchange Name | NASDAQ |
| Common stock, par value $0.0001 per share | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | MCMJ |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share | |
| Title of 12(b) Security | Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share |
| Trading Symbol | MCMJW |
| Security Exchange Name | NASDAQ |
