Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 05, 2019	Jun. 29, 2018
Entity Registrant Name	Haymaker Acquisition Corp.
Entity Central Index Key	0001707306
Amendment Flag	false
Trading Symbol	HYAC
Current Fiscal Year End Date	--12-31
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Shell Company	true
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Public Float			$ 322,080,000
Class A Common Stock
Entity Common Stock, Shares Outstanding		33,000,000
Class B Common Stock
Entity Common Stock, Shares Outstanding		8,250,000