XML 61 R49.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stockholders' Equity (Details 1) | 12 Months Ended
--- | ---
Dec. 31, 2018 $ / shares shares
Summary of outstanding warrants to purchase common stock |  |
Shares | 1,116,368 |
August 2016 Prefunded Warrants [Member] |  |
Summary of outstanding warrants to purchase common stock |  |
Issue Date | Aug. 16, 2016 | [1]
Exercise Price | $ / shares | $ 10 | [1]
Shares | 360,000 | [1]
Expiration Date | Feb. 16, 2022 | [1]
August 2016 Purchase Warrants [Member] |  |
Summary of outstanding warrants to purchase common stock |  |
Issue Date | Aug. 17, 2016 |
Exercise Price | $ / shares | $ 11.20 |
Shares | 431,368 |
Expiration Date | Feb. 17, 2022 |
August 2017 Purchase Warrants [Member] |  |
Summary of outstanding warrants to purchase common stock |  |
Issue Date | Aug. 08, 2017 |
Exercise Price | $ / shares | $ 20.00 |
Shares | 325,000 |
Expiration Date | Aug. 08, 2020 |
[1] | Under the terms of the prefunded warrants, the warrant holder prepaid $9.90 of the original $10.00 warrant per share exercise price at the time of issuance of the warrant. The remaining $0.10 exercise price is required to be paid in full prior to the issuance of any common stock under the terms of the prefunded warrant agreement.

X
- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
Name: | invest_InvestmentWarrantsExercisePrice
Namespace Prefix: | invest_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding and exercisable as of the balance sheet date. + References No definition available. + Details
Name: | neond_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsWarrantsOutstandingAndExercisableNumber
Namespace Prefix: | neond_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Issue date of share based compensation arrangement by share based payment award excluding options. + References No definition available. + Details
Name: | neond_ShareBasedCompensationArrangementByShareBasedPaymentAwardIssueDate
Namespace Prefix: | neond_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition summary of outstanding warrants to purchase common stock. + References No definition available. + Details
Name: | neond_SummaryOfOutstandingWarrantsToPurchaseCommonStockAbstract
Namespace Prefix: | neond_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the equity-based award expires, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=neond_AugustTwoThousandSixteenPrefundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=neond_AugustTwoThousandSixteenPurchaseWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=neond_AugustTwoThousandSeventeenPurchaseWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |