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Note 24 - Subsequent Events (Details Textual) - USD ($) $ in Thousands |  |  | 2 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 05, 2021 | Dec. 01, 2021 | Feb. 11, 2022 | Nov. 30, 2021
Las Vegas, Nevada [Member] |  |  |  |
Operating Lease, Monthly Base Rent Expense |  |  |  | $ 4
Fort Wayne, Indiana [Member] |  |  |  |
Operating Lease, Monthly Base Rent Expense |  |  |  | $ 8
Subsequent Event [Member] |  |  |  |
Stock Repurchase Program, Authorized Amount | $ 30,000 |  |  |
Stock Repurchase Program, Period in Force (Year) | 2 years |  |  |
Subsequent Event [Member] | Las Vegas, Nevada [Member] |  |  |  |
Operating Lease, Monthly Base Rent Expense |  | $ 4 |  |
Subsequent Event [Member] | Fort Wayne, Indiana [Member] |  |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Monthly Base Rent Expense |  |  | $ 20 |

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

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 Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramPeriodInForce1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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