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Nature of the Business and Operations (Details) $ / shares in Units, kr in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 07, 2020 $ / shares shares | Aug. 06, 2020 | Jun. 17, 2020 USD ($) | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) | Jun. 17, 2020 SEK (kr)
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Net losses |  |  |  | $ (5,600,000) | $ (5,300,000) |
Retained earnings |  |  |  |  | (196,200,000) |
Cash used in operating activities |  |  |  | (5,800,000) | $ (3,500,000) |
Short-term loan (in Kronor) | kr |  |  |  |  |  | kr 16,145,000
Principal amount |  |  | $ 1,700,000 |  |  |
Approximately aggregate |  |  | $ 1,000,000 |  |  |
Sale of stock, description |  | We entered into a Registration Rights Agreement (the “Registration Rights Agreement”) with the investors in the August 2020 Private Placement, pursuant to which we filed a registration statement with the Securities and Exchange Commission (the “SEC”) relating to the offer and sale by the holders of the shares of common stock sold in the private placement, and the shares of common stock issuable upon conversion of the Series C Preferred Shares. |  |  |  |
August 2020 Private Placement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Shares issued (in Shares) | shares | 1,611,845 |  |  |  |  |
Share price (in Dollars per share) | $ / shares | $ 6.50 |  |  |  |  |
Gross proceeds from shares issued |  |  |  | 13,900,000 |  |
Total offering cost |  |  |  | $ 879,000 |  |
Securities Purchase Agreement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Issuance of common stock (in Shares) | shares |  |  |  | 517 |  |
Aggregate purchased |  |  |  | $ 517,000,000 |  |
Series C-1 Preferred Stock [Member] | August 2020 Private Placement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Shares issued (in Shares) | shares | 365 |  |  |  |  |
Series C-2 Preferred Stock [Member] | August 2020 Private Placement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Shares issued (in Shares) | shares | 3,050 |  |  |  |  |
Series C-2 Preferred Stock [Member] | Chief Executive Officer [Member] | August 2020 Private Placement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Gross proceeds from shares issued |  |  |  | $ 3.05 |  |
Series C-1 Preferred Shares and Series C-2 Preferred Shares [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Issuance of common stock (in Shares) | shares |  |  |  | 3,567,000 |  |
Series C-1 Preferred Shares and Series C-2 Preferred Shares [Member] | August 2020 Private Placement [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Shares price per share (in Dollars per share) | $ / shares | $ 6.50 |  |  |  |  |
Price per share (in Dollars per share) | $ / shares | $ 1,000 |  |  |  |  |
Series C Preferred Stock [Member] |  |  |  |  |  |
Nature of the Business and Operations (Details) [Line Items] |  |  |  |  |  |
Sale of stock, description |  |  |  | Pursuant to the terms and the provisions of the Securities Purchase Agreement, all 365 shares of Series C-1 Preferred Stock and 4,084 shares of Series C-2 Preferred Stock (together, the “Series C Preferred Shares”) were converted into 684,378 shares of Neonode common stock on September 24 and 29, 2020, respectively. |  |
Dividends per annum |  |  |  | 5.00% |  |
Dividends |  |  |  | $ 33,000 |  |

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