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Leases (Details) - Schedule of supplemental cash flow information related to leases - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash paid for amounts included in leases:
Operating cash flows from operating leases	$ (16)	$ (184)
Operating cash flows from finance leases	(2)	(2)
Financing cash flows from finance leases	(28)	(61)
Right-of-use assets obtained in exchange for lease obligations:
Operating leases

X

- References

No definition available.

+ Details

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- Definition

Amount after accumulated amortization, of right-of-use asset from finance lease.

+ References

No definition available.

+ Details

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

No definition available.

+ Details

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- Definition

Amount of operating cash flows from finance leases.

+ References

No definition available.

+ Details

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Namespace Prefix:	neon_
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- References

No definition available.

+ Details

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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

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