Interim Period Reporting (Details) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 07, 2018 shares	Aug. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2010 Devices	Oct. 15, 2018 $ / shares	Dec. 31, 2017 USD ($)	Dec. 27, 2017 $ / shares
Interim Period Reporting (Textual)
Number of equipment sold | Devices								64,000,000
Net loss				$ (809)	$ (1,115)	$ (2,466)	$ (2,986)
Accumulated deficit				$ (184,629)		(184,629)				$ (183,745)
Net cash used in operating activities						(2,275)	(4,691)
Net proceeds from issuance of common stock							$ 9,082
Share price | $ / shares											$ 1.00
Shelf registration common stock offering price			$ 20,000
Shelf registration statement expiration date			Mar. 24, 2020
Description for reverse stock split	Neonode stockholders approved an amendment to the restated certification of incorporation to effect a reverse stock split of the Company’s common stock, in the range of 1-for-5 to 1-for-15 at the discretion of the board of directors. The board approved a 1-for-10 reverse stock split of the Company’s issued and outstanding shares of common stock, and on September 27, 2018, the Company filed the certificate of first amendment to its restated certificate of incorporate with the state of Delaware to effect the reverse stock split, effective October 1, 2018.
Description for conversion of common stock						As a result of the reverse stock split, every ten shares of issued and outstanding common stock were converted into one share of common stock, without any change in the par value per share.
Subsequent Event [Member]
Interim Period Reporting (Textual)
Share price | $ / shares									$ 1.00
Common Stock [Member] | Maximum [Member]
Interim Period Reporting (Textual)
Number of authorized shares of common stock and preferred stock | shares	100,000,000
Common Stock [Member] | Minimum [Member]
Interim Period Reporting (Textual)
Number of authorized shares of common stock and preferred stock | shares	10,000,000
Securities Purchase Agreement [Member] | August 2017 Private Placement [Member]
Interim Period Reporting (Textual)
Issuance of common stock | shares		975,000
Net proceeds from issuance of common stock		$ 9,100
Share price | $ / shares		$ 10.00
Warrant expiration date		Aug. 09, 2020
Warrants to purchase shares of common stock | shares		325,000
Warrants purchase exercise price | $ / shares		$ 20.00
Aggregate purchase price of warrants		$ 9,750
Warrant exercisable, description		The 2017 Warrants will become exercisable on August 8, 2018, and will expire on August 9, 2020.
Warrants exercised value		$ 6,500