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Note 6 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual) | 12 Months Ended
--- | ---
Nov. 30, 2021 | Nov. 30, 2020
Extended Product Warranty, Term (Year) | 3 years | 3 years

X
- Definition Represents the term associated with the extended product warranty. + References No definition available. + Details
Name: | byrn_ExtendedProductWarrantyTerm
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration