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v3.19.1

Intangible Assets and Goodwill (Details Textual) | 12 Months Ended
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Jan. 31, 2019 USD ($)
Intangible Assets (Textual) |
Amortization expense of intangible assets | $ 18,930

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- Definition Amortization expense of intangible assets. + References No definition available. + Details
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Namespace Prefix: | ntrb_
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: | ntrb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration