Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 29, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	000-23486
Entity Registrant Name	NN, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	62-1096725
Entity Address, Address Line One	6210 Ardrey Kell Road, Suite 600
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
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	NNBR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		43,890,305
Entity Central Index Key	0000918541
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false