Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 30, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
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		26,107,462
Smaller Reporting Company	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	1-6615
Entity Tax Identification Number	95-2594729
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	MI
Entity Address, Postal Zip Code	48033
City Area Code	248
Local Phone Number	352-7300
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, $0.01 par value
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false