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Note 21 - Exclusive Supply and Purchase Agreements (Details Textual) - BIP Manufacturer [Member] - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 01, 2017 | Nov. 30, 2021 | Nov. 30, 2020
Term of Agreement (Year) | 4 years |  |
Extension for Additional Term of Agreement (Year) | 1 year |  |
Period Required for Written Notice of Termination in Order to Prevent Automatic Extension of Agreement (Day) | 60 days |  |
Purchases from Manufacturer |  | $ 20 | $ 200

X
- Definition This element represents additional term of agreement. + References No definition available. + Details
Name: | byrn_ExtensionForAdditionalTermOfAgreement
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the period required for written notice of termination of agreement in order to prevent the the automatic extension of the agreement. + References No definition available. + Details
Name: | byrn_PeriodRequiredForWrittenNoticeOfTerminationInOrderToPreventAutomaticExtensionOfAgreement
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of purchases from manufacturer during the period. + References No definition available. + Details
Name: | byrn_PurchasesFromManufacturer
Namespace Prefix: | byrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents term of agreement. + References No definition available. + Details
Name: | byrn_TermOfAgreement
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=byrn_BIPManufacturerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |