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v3.21.1

Subsequent Events (Details) | May 10, 2021 USD ($)
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Subsequent Events (Details) [Line Items] |
Percentage of gross proceeds | 3.00%
Subsequent Event [Member] |
Subsequent Events (Details) [Line Items] |
Aggregate offering price | $ 25,000,000
Maximum [Member] | Subsequent Event [Member] |
Subsequent Events (Details) [Line Items] |
Aggregate offering price | $ 100,000,000

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Namespace Prefix: | neond_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | neond_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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Namespace Prefix: | neond_
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
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