XML 81 R65.htm IDEA: XBRL DOCUMENT
v3.25.1

Employee Benefit Plans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Employee Benefit Plans [Line Items] |  |
Employer matching contribution | 30.00% |
Defined benefit plan contribution, amount | $ 542,000 |
Pension plans for Swedish employees [Member] |  |
Employee Benefit Plans [Line Items] |  |
Employer matching contribution | 4.50% |
Defined benefit plan contribution, amount |  | $ 510,000
U.S. Employee 401K Pension Plan [Member] |  |
Employee Benefit Plans [Line Items] |  |
Defined benefit plan contribution, amount | $ 6,000 | 6,000
Defined benefit plan contribution, percentage | 6.00% |
Pension Plans for Taiwan Employees [Member] |  |
Employee Benefit Plans [Line Items] |  |
Defined benefit plan contribution, amount | $ 3,000 | $ 3,000
Defined benefit plan contribution, percentage | 6.00% |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=neon_PensionPlansForSwedishEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=neon_USEmployee401KPensionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=neon_PensionPlansForTaiwanEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |