CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical)	Jun. 30, 2018 shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock subject to possible forfeiture	750,000

Number of shares of common stock subject to forfeiture in the event of the over-allotment option is not exercised by the underwriters.

No definition available.

Name:	amci_CommonStockSubjectToPossibleForfeiture
Namespace Prefix:	amci_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant