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Net Revenue - Trade Sale Revenue (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |  |  |  |  |
Trade sales receivable | $ 1,211,495 |  | $ 1,211,495 |  | $ 1,417,692
Trade sales payable | 512,935 |  | 512,935 |  | $ 481,471
Trade sales revenue | $ 1,211,615 | $ 1,466,652 | $ 2,476,078 | $ 2,847,494 |

X
- Definition Trade sales payable. + References No definition available. + Details
Name: | bbgi_TradeSalesPayable
Namespace Prefix: | bbgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Trade sales receivable. + References No definition available. + Details
Name: | bbgi_TradeSalesReceivable
Namespace Prefix: | bbgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trade sales revenue. + References No definition available. + Details
Name: | bbgi_TradeSalesRevenue
Namespace Prefix: | bbgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration