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Short-Term Borrowings (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
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Jun. 17, 2020 | Dec. 31, 2021 | Aug. 07, 2020
Short-Term Borrowings (Details) [Line Items] |  |  |
Total amount of credit |  | $ 563,000 |
Description of deductible interest |  | There was a 1.25% annual non-deductible interest and a credit fee of 0.2% from the seventh month of the granted credit. |
Interest Expense |  | $ 2,000 |
Directors [Member] |  |  |
Short-Term Borrowings (Details) [Line Items] |  |  |
Description of loan agreements | the Company entered into the Loan Agreements with two entities beneficially owned respectively by each of Ulf Rosberg and Peter Lindell, directors of Neonode (each, a “Director”). Pursuant to the Loan Agreements, each entity beneficially owned by the Director made approximately $1.7 million in U.S. dollars principal amount available to the Company. The Company made an initial drawdown of an aggregate of approximately $1.0 million under the Loan Agreements. |  |
Loan Agreement [Member] |  |  |
Short-Term Borrowings (Details) [Line Items] |  |  |
Description of loan agreements | Each of the Loan Agreements provided for a credit fee of 0.75% per annum, calculated on a daily basis from the date of the Loan Agreement, and any outstanding amount incurred interest at a fixed rate of 3.25% per annum, calculated on a daily basis from the drawdown date. Drawdowns under the Loan Agreements became unavailable upon the earlier to occur of the execution of a capital raise by Neonode or December 31, 2020. Upon completion of a capital raise before December 31, 2020, any outstanding amount under the Loan Agreements, including any credit fee and interest, became payable as soon as practicably possible after such capital raise. If a capital raise was not completed by December 31, 2020, or if the funds from the capital raise were insufficient to repay the full outstanding amount under the Loan Agreements, then the outstanding amount under the Loan Agreements, including any credit fee and interest, would have become due and payable on February 28, 2021. |  |
Series C-2 Preferred Stock [Member] |  |  |
Short-Term Borrowings (Details) [Line Items] |  |  |
Shares issued |  |  | 517

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- Definition Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 + Details
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