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Stockholders' Equity (Details) - Schedule of Summary of all stock option plans / warrant activity - August 2016 Purchase Warrants [Member] | 12 Months Ended
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Dec. 31, 2020 $ / shares shares
Stockholders' Equity (Details) - Schedule of Summary of all stock option plans / warrant activity [Line Items] |
Issue Date | Aug. 17, 2016
Exercise Price | $ / shares | $ 11.20
Shares | shares | 431,368
Expiration Date | Feb. 17, 2022

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- Definition Investment warrants exercise price. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- 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
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Period Type: | instant

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- Definition Issue date of share based compensation arrangement by share based payment award excluding options. + References No definition available. + Details
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Namespace Prefix: | neond_
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- 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=120381028&loc=d3e5070-113901 + Details
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- Details
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