| Document And Entity Information - USD ($) | 12 Months Ended | ||
| Dec. 31, 2021 | Mar. 03, 2022 | Jun. 30, 2021 | |
| Document Information Line Items | |||
| Entity Registrant Name | NEONODE INC. | ||
| Trading Symbol | NEON | ||
| Document Type | 10-K/A | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Common Stock, Shares Outstanding | 13,575,952 | ||
| Entity Public Float | $ 41,885,928 | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (this “Amendment”) is being filed solely to file Exhibit 23 (auditor’s consent), which was inadvertently omitted from the registrant’s Form 10-K filed with the Securities and Exchange Commission on March 10, 2022 (the “Form 10-K”).Except as otherwise expressly noted herein, this Amendment does not modify or update in any way the financial position, results of operations, cash flows, or other information contained or incorporated in, including the exhibits thereto, the Form 10-K, nor does it reflect events occurring after the filing of the Form 10-K. Accordingly, this Amendment should be read in conjunction with the Form 10-K.In addition, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Amendment also includes new certifications from the registrant’s principal executive officer and principal financial officer. | ||
| Entity Central Index Key | 0000087050 | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Well-known Seasoned Issuer | No | ||
| Document Period End Date | Dec. 31, 2021 | ||
| Document Fiscal Year Focus | 2021 | ||
| Document Fiscal Period Focus | FY | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Entity File Number | 001-35526 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 94-1517641 | ||
| Entity Address, Address Line One | Karlavägen 100 | ||
| Entity Address, Postal Zip Code | 115 26 | ||
| Entity Address, City or Town | Stockholm | ||
| Entity Address, Country | SE | ||
| City Area Code | +46 (0) | ||
| Local Phone Number | 8 667 17 17 | ||
| Auditor Name | KMJ Corbin Company LLP | ||
| Auditor Location | Irvine, California | ||
| Auditor Firm ID | 170 | ||
| Title of 12(b) Security | Common Stock, par value $0.001 per share | ||
| Security Exchange Name | NASDAQ | ||
| Entity Interactive Data Current | Yes |
