Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 15, 2019
Entity Registrant Name	MTech Acquisition Corp
Entity Central Index Key	0001719893
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Trading Symbol	MTEC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Small Business	true
Entity Ex Transition Period	false
Entity Emerging Growth Company	true
Entity's Reporting Status Current	Yes
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019
Common Class A [Member]
Entity Common Stock, Shares Outstanding		5,993,750
Common Class B [Member]
Entity Common Stock, Shares Outstanding		1,437,500