0000918541-26-000006 | 10-K | XBRL Viewer | NN INC

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Reports Document and Entity Information Audit Information Insider Trading Arrangements Cybersecurity Risk Management and Strategy Disclosure Uncategorized Uncategorized Items - nnbr-20251231_htm.xml All Reports

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2025	Feb. 13, 2026	Jun. 30, 2025
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Document Transition Report	false
Entity File Number	001-39268
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 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
Title of 12(b) Security	Common Stock, par value $0.01
Trading Symbol	NNBR
Security Exchange Name	NASDAQ
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
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 74.4
Entity Common Stock, Shares Outstanding		50,190,124
Documents Incorporated by Reference	Portions of the Proxy Statement with respect to the 2026 Annual Meeting of Stockholders are incorporated by reference in Part III, Items 10 to 14 of this Annual Report on Form 10-K as indicated herein. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2025.
Entity Central Index Key	0000918541
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Financial Statement Error Correction [Flag]	false
Auditor Location	Charlotte, North Carolina

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2025
Document Information [Line Items]
Auditor Name	GRANT THORNTON LLP
Auditor Location	Charlotte, North Carolina
Auditor Firm ID	248

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	A cybersecurity incident could interrupt our operations, result in downtime, divert our planned efforts and resources from other projects, damage our reputation and brand, damage our competitive position, subject us to liability claims or regulatory penalties under laws protecting the privacy of personal information. Although impacts of past cybersecurity incidents have been immaterial to date, the impacts of such events in the future may materially and adversely affect our business, financial condition, or results of operations.
Cybersecurity Risk Management Processes Integrated [Text Block]	We rely on proprietary and third-party information systems to process, transmit and store information and to manage or support our business processes. We store and maintain confidential financial and business information regarding us and persons with whom we do business on our information technology systems. We also collect and hold personal data of our employees in connection with their employment. In addition, we engage third-party service providers that may collect and hold personal data of our employees in connection with providing business services to us, including web hosting, accounting, payroll and benefit services.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	The protection of the information technology systems on which we rely is critically important to us. The Audit Committee of the Board of Directors has oversight for the reliability and security of our information systems, including identifying material risks and cybersecurity threats arising in our business. The Audit Committee receives updates from management of the ongoing cybersecurity initiatives and events at least once per quarter. In the event of a material cybersecurity incident, management will notify the Cybersecurity Sub-Committee of the Board of Directors, which will provide oversight for the Company’s response and mitigation to the incident.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee of the Board of Directors has oversight for the reliability and security of our information systems, including identifying material risks and cybersecurity threats arising in our business.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee receives updates from management of the ongoing cybersecurity initiatives and events at least once per quarter.
Cybersecurity Risk Role of Management [Text Block]	Our Chief Financial Officer is responsible for the management of the Company’s information systems and oversees the Company’s information technology team (“IT Team”). The IT Team has in place documented procedures for cybersecurity response plans, which are reviewed annually or as events warrant. The IT Team utilizes third party security experts to provide continuous external penetration testing, conduct security reviews, and to provide a managed security operations center that does regular monitoring as well as provide additional resources for threat and incident response activities.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our Chief Financial Officer is responsible for the management of the Company’s information systems and oversees the Company’s information technology team (“IT Team”).
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The IT Team utilizes third party security experts
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	In the event of a material cybersecurity incident, management will notify the Cybersecurity Sub-Committee of the Board of Directors, which will provide oversight for the Company’s response and mitigation to the incident.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true