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Note 18 - Leases (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Aug. 31, 2022 | May 31, 2023
Wilmington/Andover, Massachusetts [Member] |  |
Lease Expiration Date |  | Feb. 29, 2028
Operating Lease, Monthly Base Rent Expense |  | $ 20
SOUTH AFRICA |  |
Lease Expiration Date |  | Dec. 31, 2024
SOUTH AFRICA | Lease for Larger Facility [Member] |  |
Operating Lease, Monthly Base Rent Expense |  | $ 70
Fort Wayne, Indiana [Member] | Fort Wayne Facility Member |  |
Lease Expiration Date | Jul. 31, 2027 | Jul. 31, 2025
Operating Lease, Monthly Base Rent Expense |  | $ 10
Fort Wayne, Indiana [Member] | Former Fort Wayne Facility Member |  |
Operating Lease, Monthly Base Rent Expense | $ 20 |
Las Vegas, Nevada [Member] |  |
Lease Expiration Date |  | Jan. 31, 2027
Las Vegas, Nevada [Member] | Maximum [Member] |  |
Operating Lease, Monthly Base Rent Expense |  | $ 10

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 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: | us-gaap_LeaseContractualTermAxis=byrn_LeaseForLargerFacilityMember
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_LeaseContractualTermAxis=byrn_FortWayneFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=byrn_FormerFortWayneFacilityMember
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: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |