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Note 14 - Stockholders' Equity - Summary of Warrants (Details) | 12 Months Ended
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Nov. 30, 2021 $ / shares shares | Nov. 30, 2020 $ / shares shares
Outstanding, number of warrants (in shares) | shares | 585,739 | 4,578,722
Outstanding, weighted average exercise price (in dollars per share) | $ 2.40 | $ 2.20
Granted, number of warrants (in shares) | shares | 0 | 214,684
Granted, weighted average exercise price (in dollars per share) | $ 0 | $ 2.50
Exercised, number of warrants (in shares) | shares | (585,739) | (4,207,667)
Exercised, weighted average exercise price (in dollars per share) | $ 2.40 | $ (2.10)
Exercised, weighted average exercise price (in dollars per share) | $ (2.40) | $ 2.10
Outstanding, number of warrants (in shares) | shares | 0 | 585,739
Outstanding, weighted average exercise price (in dollars per share) | $ 0 | $ 2.40
Exercisable, number of warrants (in shares) | shares | 0 | 585,739
Exercisable, weighted average exercise price (in dollars per share) | $ 0 | $ 2.40
Total outstanding warrants, weighted-average remaining contract lives (Year) |  | 2 years 9 months 25 days
Total exercisable warrants, weighted-average remaining contract lives (Year) |  | 2 years 9 months 25 days

X
- Definition Represents the number of warrants or rights exercisable as of the specified date. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightExercisableNumber
Namespace Prefix: | byrn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average exercise price of exercisable warrants or rights. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightExercisableWeightedAverageExercisePrice
Namespace Prefix: | byrn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average remaining contractual life of exercisable warrants or rights. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightExercisableWeightedAverageRemainingContractualLife
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of warrants exercised during the period. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightExercisedInPeriod
Namespace Prefix: | byrn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average exercise price of warrants or rights exercised during the period. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightExercisedInPeriodWeightedAverageExercisePrice
Namespace Prefix: | byrn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of warrants or rights issued during the period. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightIssuedDuringPeriod
Namespace Prefix: | byrn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The exercise price of warrants or rights issued during the period. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightIssuedDuringPeriodExercisePrice
Namespace Prefix: | byrn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average exercise price of warrants or rights outstanding. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice
Namespace Prefix: | byrn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average remaining contractual life of outstanding warrants or rights. + References No definition available. + Details
Name: | byrn_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualLife
Namespace Prefix: | byrn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant