Cover - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 21, 2020	Jun. 28, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-36051
Entity Registrant Name	JASON INDUSTRIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-2888322
Entity Address, Address Line One	833 East Michigan Street
Entity Address, Address Line Two	Suite 900
Entity Address, City or Town	Milwaukee
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53202
City Area Code	414
Local Phone Number	277-9300
Title of 12(g) Security	Common Stock, $0.0001 par value per share
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 12.2
Entity Common Stock, Shares Outstanding		28,508,977
Documents Incorporated by Reference	Portions of the registrant’s definitive proxy statement relating to its 2020 Annual Meeting of Shareholders (the “2020 Proxy Statement”) are incorporated by reference into Part III of this Annual Report on Form 10-K. The 2020 Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0001579252
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false