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Inventories - Summary of Inventories, Net of Reserves (Parenthetical) (Detail) $ in Millions | Mar. 25, 2023 USD ($)
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Inventory Disclosure [Abstract] |
Increase in raw materials correction | $ 1.8
Decrease in finished goods value correction | $ 1.8

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- Definition Decrease in finished goods value correction. + References No definition available. + Details
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Namespace Prefix: | bgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Increase in raw materials correction. + References No definition available. + Details
Name: | bgi_IncreaseInRawMaterialsCorrection
Namespace Prefix: | bgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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