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