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Cover Page
Oct. 29, 2025
Aug. 06, 2025
Cover [Abstract]    
Entity Registrant Name NN, Inc.  
Document Type 8-K  
Document Period End Date Oct. 29, 2025  
Amendment Flag false  
Entity Central Index Key 0000918541  
Entity Incorporation, State or Country Code DE  
Entity File Number 001-39268  
Entity Tax Identification Number 62-1096725  
Entity Address, Address Line One 6210 Ardrey Kell Road, Suite 120  
Entity Address, City or Town Charlotte  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 28277  
City Area Code   980
Local Phone Number   264-4300
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Title of 12(b) Security Common Stock, par value $0.01  
Trading Symbol NNBR  
Security Exchange Name NASDAQ  
Entity Emerging Growth Company false