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STOCKHOLDERS' EQUITY - Common Stock (Details) | Jun. 30, 2025 vote
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Equity [Abstract] |
Common stock, number of votes | 1

X
- Definition Common Stock, Number of Votes + References No definition available. + Details
Name: | byon_CommonStockNumberOfVotes
Namespace Prefix: | byon_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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