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Leases (Details) - Schedule of minimum future rentals on the non-cancellable finance leases $ in Thousands | 6 Months Ended
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Jun. 30, 2021 USD ($)
Schedule of minimum future rentals on the non-cancellable finance leases [Abstract] |
2021 (remaining months) | $ 354
2022 | 169
2023 | 22
Total minimum payments required: | 545
Less amount representing interest: | (5)
Present value of net minimum lease payments: | 540
Less current portion | (501)
Total | $ 39

X
- Definition Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheets date. + References No definition available. + Details
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Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheets date. + References No definition available. + Details
Name: | neon_CapitalLeasesFutureMinimumPaymentsDueInThreeYear
Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

X
- Definition Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheets date. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of minimum lease payments for capital lease. + References No definition available. + Details
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Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and tax. + References No definition available. + Details
Name: | neon_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayment
Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
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X
- Definition Less amount representing interest. + References No definition available. + Details
Name: | neon_LessAmountRepresentingInterest
Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References No definition available. + Details
Name: | neon_LessCurrentsPortion
Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | neon_ScheduleOfMinimumFutureRentalsOnTheNonCancellableFinanceLeasesAbstract
Namespace Prefix: | neon_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total of finance lease. + References No definition available. + Details
Name: | neon_TotalOfFinanceLeases
Namespace Prefix: | neon_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant