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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of environmental remediation costs capitalized. These expenditures may relate to long-lived improvements in operating facilities.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Description of time deposit maturities, including certificates of deposit.

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Description of noncontrolling interest which might include background information, terms of the ownership arrangement, and type and terms of equity interest owned by the noncontrolling interest holders.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of selling, general and administrative expense classified as other.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended							9 Months Ended		12 Months Ended
	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2019 USD ($) Customers	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Customers
Summary of Significant Accounting Policies (Textual)
Basic deposit coverage limits per owner and customer	$ 250							$ 250
Allowance for doubtful accounts	19			$ 149				19		$ 149
Costs capitalized in projects in process								7
Foreign currency translation adjustments	(145)	$ 26	$ (181)	$ 60	$ 13	$ (336)	$ (94)	(300)	$ (417)
Foreign currency transactions, general and administrative expenses	$ 56				13			170	(34)
Investment in joint venture								$ 3
Equity ownership percentage	50.00%							50.00%
Advertising costs	$ 18				$ 14			$ 66	$ 84
Noncontrolling interest, description								We consolidate subsidiaries in which we hold, directly or indirectly, more than 50% of the voting rights, and variable interest entities ("VIEs") in which Neonode is the primary beneficiary.
Corporate income tax rate, description								The corporate income tax rate from 35% to 21% effective January 1, 2018, among other changes.
Sales returns of revenue reconciliation								$ 14		$ 14
Recognized of Revenues	$ 0							$ 75
Investments maturities, description								The Company considers all highly liquid investments with original maturities of 90 days or less to be cash equivalents.
Accounts Receivable [Member]
Summary of Significant Accounting Policies (Textual)
Number of customer \| Customers								4		4
Concentration risk, percentage								88.00%		67.00%
Sales Revenue, Net [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage	10.00%				10.00%			10.00%	10.00%
Sales Revenue, Net [Member] \| Hewlett Packard [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage	34.00%				33.00%			39.00%	34.00%
Sales Revenue, Net [Member] \| Epson [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage	18.00%				16.00%			15.00%	14.00%
Sales Revenue, Net [Member] \| Alpine [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage	20.00%							14.00%
Sales Revenue, Net [Member] \| Bosch [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage								10.00%
Sales Revenue, Net [Member] \| Canon [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage					10.00%				13.00%
Sales Revenue, Net [Member] \| Faraday & Future [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage					15.00%
Sales Revenue, Net [Member] \| Bosh [Member]
Summary of Significant Accounting Policies (Textual)
Concentration risk, percentage					10.00%
Minimum [Member]
Summary of Significant Accounting Policies (Textual)
Equity ownership percentage	20.00%							20.00%
Warrant term								12 months
Maximum [Member]
Summary of Significant Accounting Policies (Textual)
Equity ownership percentage	50.00%							50.00%
Warrant term								36 months
Sweden [Member]
Summary of Significant Accounting Policies (Textual)
Noncontrolling interest owned by Pronode Technologies AB	51.00%							51.00%
Noncontrolling interest owned by Propoint AB	49.00%							49.00%
Sweden [Member] \| Euro [Member]
Summary of Significant Accounting Policies (Textual)
Basic deposit coverage limits per owner and customer	$ 100							$ 100
Sweden [Member] \| Yen [Member]
Summary of Significant Accounting Policies (Textual)
Basic deposit coverage limits per owner and customer	10,000							10,000
Korea [Member] \| Won [Member]
Summary of Significant Accounting Policies (Textual)
Basic deposit coverage limits per owner and customer	50,000							50,000
Taiwan [Member] \| Taiwan Dollars [Member]
Summary of Significant Accounting Policies (Textual)
Basic deposit coverage limits per owner and customer	3,000							3,000
Stockholm corporate offices [Member]
Summary of Significant Accounting Policies (Textual)
Operating lease obligations	$ 900							$ 900