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Document and Entity Information
Dec. 31, 2020
Entity Listings [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Dec. 31, 2020
Entity Registrant Name AMCI ACQUISITION CORP.
Entity Incorporation, State or Country Code DE
Entity File Number 001-38742
Entity Tax Identification Number 83-0982969
Entity Address, Address Line One 1501 Ligonier Street, Suite 370
Entity Address, City or Town Latrobe
Entity Address, State or Province PA
Entity Address, Postal Zip Code 15650
City Area Code 724
Local Phone Number 672-4319
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Central Index Key 0001744494
Common Stock [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol AMCI
Security Exchange Name NASDAQ
Warrants to purchase one share of Common Stock [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Warrants to purchase one share of Common Stock
Trading Symbol AMCIW
Security Exchange Name NASDAQ
Units, each consisting of one share of Common Stock and one Warrant [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Units, each consisting of one share of Common Stock and one Warrant
Trading Symbol AMCIU
Security Exchange Name NASDAQ