Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 03, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Trading Symbol	SUP
Entity Registrant Name	SUPERIOR INDUSTRIES INTERNATIONAL INC
Entity Central Index Key	0000095552
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,128,158
Smaller Reporting Company	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	1-6615
Entity Tax Identification Number	952594729
Entity Address, Address Line One	26600 Telegraph Road
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Southfield
Entity Address, State or Province	Michigan
Entity Address, Postal Zip Code	48033
City Area Code	248
Local Phone Number	352-7300