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Stockholders' Equity (Details Textual) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 13, 2015 | Aug. 31, 2017 | Aug. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Oct. 06, 2017 | Mar. 31, 2009
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  | 100,000,000 | 100,000,000 |  | 100,000,000 |
Net proceeds from issuance of common stock |  |  |  | $ 9,079,000 | $ 7,913,000 | $ 5,422,000 |  |
Warrants exercised |  |  |  | 0 |  |  |  |
Employee Investor Shares [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Shares price per share |  |  | $ 1.17 |  |  |  |  |
Issuance of common stock, shares |  |  | 427,352 |  |  |  |  |
Net proceeds from issuance of common stock |  |  | $ 500,000 |  |  |  |  |
Outside Investor Shares [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Shares price per share |  |  | $ 1.00 |  |  |  |  |
Issuance of common stock, shares |  |  | 4,600,000 |  |  |  |  |
Net proceeds from issuance of common stock |  |  | $ 4,600,000 |  |  |  |  |
Pre-Funded Warrant Shares [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Securities purchase agreement, description |  |  | (iii) up to 3,600,000 Pre-Funded Warrant Shares issuable upon exercise of the Pre-Funded Warrants for which Neonode received $3,564,000 pre-funded in gross proceeds. The Pre-Funded Warrants were issued to certain outside investors whose purchase of shares of Neonode common stock would make them the beneficial owners of more than 9.99% of the outstanding common stock of Neonode. Each of the Pre-Funded Warrants were pre-funded upon closing of the private placement at $0.99 per Pre-Funded Warrant Share and have an exercise price of $0.01 per Pre-Funded Warrant Share. The Pre-Funded Warrants are immediately exercisable upon issuance and will not expire prior to exercise. |  |  |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Preferred stock conversion ratio per share of common stock |  |  |  |  |  |  |  | 132.07
Preferred stock, liquidation preference |  |  |  | $ 0.001 | $ 0.001 |  |  |
Preferred stock voting rights description |  |  |  | The holders of shares of Series B Preferred stock have one vote for each share of Series B Preferred stock held by them. |  |  |  |
Preferred stock conversion description |  |  |  | Each share of Series B Preferred stock was convertible into one share of our common stock. |  |  |  |
Issuance of common stock, shares |  |  |  |  |  |  |  |
Securities Purchase Agreements [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Shares price per share |  | $ 1.00 |  |  |  |  |  |
Warrants issued to purchase shares of common stock |  |  |  | 3,250,000 |  |  |  |
Securities purchase agreement, description |  | The 2017 Warrants will become exercisable on August 8, 2018, and will expire on August 8, 2020. | (iii) up to 3,600,000 shares issuable upon exercise of warrants (the "Pre-Funded Warrants") by outside investors for which we received $3,564,000 pre-funded in proceeds and will receive up to $36,000 in proceeds upon future cash exercises. | The 2017 Warrants will become exercisable on August 8, 2018, and will expire on August 8, 2020. |  |  |  |
Exercise price |  |  |  | $ 2.00 |  |  |  |
Proceeds from issuance of warrants |  | $ 9,750,000 | $ 4,800,000 | $ 6,500,000 |  |  |  |
Issuance of common stock, shares |  | 9,750,000 | 8,627,352 |  |  |  |  |
Net proceeds from issuance of common stock |  | $ 9,100,000 | $ 7,900,000 |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Issuance of common stock, shares |  |  |  | 9,750,000 | 5,027,000 | 3,200,000 |  |
Warrant [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Additional warrants issued to purchase shares of common stock |  |  |  |  | 80,000 |  |  |
Common stock purchased by exercise of warrants |  |  |  |  | 11,565 |  |  |
Direct offering costs | $ 700,000 |  |  |  |  |  |  |
Price per share | $ 1.90 |  |  |  |  |  |  |
Cash | $ 5,400,000 |  |  |  |  |  |  |
Stock issued for cash | $ 6,100,000 |  |  |  |  |  |  |
Warrant [Member] | Securities Purchase Agreements [Member] |  |  |  |  |  |  |  |
Stockholders Equity (Textual) |  |  |  |  |  |  |  |
Warrants issued to purchase shares of common stock |  |  | 4,313,676 |  |  |  |  |
Exercise price |  |  | $ 1.12 |  |  |  |  |

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