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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 |  |

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