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Note 18 - Leases (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2021 | Nov. 30, 2021 | Nov. 30, 2020 | Nov. 30, 2019
Wilmington/Andover, Massachusetts [Member] |  |  |  |
Maximum Allowance for Tenant Improvements |  |  |  | $ 200
Base Rent |  | $ 100 |  |
Lease Expiration Date |  | Feb. 29, 2028 |  |
SOUTH AFRICA |  |  |  |
Operating Lease, Monthly Base Rent Expense |  | $ 5 | $ 4 |
Lease Expiration Date |  |  | Nov. 30, 2020 |
Fort Wayne, Indiana [Member] |  |  |  |
Operating Lease, Monthly Base Rent Expense |  | $ 8 |  |
Lease Expiration Date |  | Jul. 31, 2025 |  |
Fort Wayne, Indiana [Member] | Lease Termination Agreement [Member] |  |  |  |
Payments for Termination of Operating Lease | $ 20 |  |  |
Lease Expiration Date |  | Feb. 28, 2022 |  |
Las Vegas, Nevada [Member] |  |  |  |
Operating Lease, Monthly Base Rent Expense |  | $ 4 |  |
Lease Expiration Date |  | Aug. 31, 2022 |  |

X
- Definition Represents the amount of base rent per year under an operating lease. + References No definition available. + Details
Name: | byrn_BaseRent
Namespace Prefix: | byrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount related to maximum allowance for tenant improvements. + References No definition available. + Details
Name: | byrn_MaximumAllowanceForTenantImprovements
Namespace Prefix: | byrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of base rent per month under an operating lease. + References No definition available. + Details
Name: | byrn_OperatingLeaseMonthlyBaseRentExpense
Namespace Prefix: | byrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of payments made during the period in connection with the termination of an operating lease. + References No definition available. + Details
Name: | byrn_PaymentsForTerminationOfOperatingLease
Namespace Prefix: | byrn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=byrn_WilmingtonAndoverMassachusettsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_ZA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=byrn_FortWayneIndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_StatementGeographicalAxis=byrn_LasVegasNevadaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |