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Summary of Significant Accounting Policies (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Nov. 30, 2020 USD ($)
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Noncontrolling interest, description | Neonode consolidates entities in which it has a controlling financial interest. We consolidate subsidiaries in which we hold, directly or indirectly, more than 50% of the voting rights. |  |
Insurance coverage, description | For deposits held with financial institutions in the U.S., the U.S. Federal Deposit Insurance Corporation, provides basic deposit coverage with limits up to $250,000 per owner. The Swedish government provides insurance coverage up to 100,000 Euro per customer and covers deposits in all types of accounts. The Japanese government provides insurance coverage up to 10,000,000 Yen per customer. The Korea Deposit Insurance Corporation provides insurance coverage up to 50,000,000 Won per customer. The Central Deposit Insurance Corporation in Taiwan provides insurance coverage up to 3,000,000 Taiwan Dollar per customer. At times, deposits held with financial institutions may exceed the amount of insurance provided. |  |
Allowance for doubtful accounts (in Dollars) | $ 79,000 | $ 85,000 |
Costs capitalized in projects in process (in Dollars) |  | 8 |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures (in Dollars) |  | $ 3 | $ 3,000
Equity ownership percentage | 50.00% |  | 50.00%
Concentration risk, percentage | 100.00% | 100.00% |
Accounts Receivable [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Number of customers | 4 | 3 |
Concentration risk, percentage | 62.00% | 72.00% |
Sales Revenue, Net [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Concentration risk, percentage | 10.00% | 10.00% |
Neonode Technologies AB [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Noncontrolling interest owned by Propoint AB | 51.00% |  |
Pronode Technologies AB [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Noncontrolling interest owned by Propoint AB | 49.00% |  |
Airbar Sales [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Inventory reserve amount (in Dollars) | $ 900 | $ 800 |
Inventory description | Since the sale of AirBars has been lower than expected, a major part of the inventory at the partner remained unused when the due date of the bank guarantee neared and Neonode therefore agreed that the partner should keep inventory for the production of 20,000 AirBars and the rest be purchased by us. The inventory value of these purchases has been fully reserved. |  |
Hewlett Packard Company [Member] | Sales Revenue, Net [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Concentration risk, percentage | 27.00% | 38.00% |
Epsons Member | Sales Revenue, Net [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Concentration risk, percentage | 19.00% | 16.00% |
Alpine Electronics, Inc [Member] | Sales Revenue, Net [Member] |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Concentration risk, percentage | 11.00% | 15.00% |

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