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 |