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Note 17 - Earnings Per Share (Details Textual) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
May 31, 2021 | May 31, 2021
Restricted Stock Units (RSUs) [Member] |  |
Contingently Issuable Shares (in shares) | 1,155,000 | 1,155,000

X
- Definition The number of contingently issuable shares. + References No definition available. + Details
Name: | byrn_ContingentlyIssuableShares
Namespace Prefix: | byrn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |