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Note 19 - Leases (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Feb. 28, 2021 | Feb. 28, 2022
Wilmington/Andover, Massachusetts [Member] |  |
Lease Expiration Date |  | Feb. 29, 2028
Operating Lease, Monthly Base Rent Expense |  | $ 15
SOUTH AFRICA |  |
Lease Expiration Date |  | Nov. 30, 2024
Operating Lease, Monthly Base Rent Expense |  | $ 5
Fort Wayne, Indiana [Member] |  |
Lease Expiration Date |  | Jul. 31, 2025
Operating Lease, Monthly Base Rent Expense |  | $ 8
Fort Wayne, Indiana [Member] | Lease Termination Agreement [Member] |  |
Lease Expiration Date |  | Feb. 28, 2022
Payments for Termination of Operating Lease | $ 20 |
Las Vegas, Nevada [Member] |  |
Lease Expiration Date |  | Aug. 31, 2022
Operating Lease, Monthly Base Rent Expense |  | $ 4

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: |