XML 69 R57.htm IDEA: XBRL DOCUMENT
v3.21.2

Leases (Details) | 12 Months Ended
--- | ---
Jan. 31, 2021 USD ($)
Disclosure Text Block [Abstract] |
Amount of monthly rent | $ 4,200

X
- Definition Amount of monthly rent. + References No definition available. + Details
Name: | ntrb_MonthlyRent
Namespace Prefix: | ntrb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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