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Accounts Receivable - Additional Information (Detail) (USD $) | 12 Months Ended |
--- | --- | ---
Mar. 29, 2014 | Mar. 30, 2013
Accounts Receivables [Line Items] |  |
Customer trade receivables | $ 5,777,000 | $ 4,884,000
Non accrual [Member] |  |
Accounts Receivables [Line Items] |  |
Customer trade receivables | 200,000 | 300,000
Payment period of term loan | Revolving lines of credit and/or installment plans under which the payment terms exceed one year. |
Outstanding amount of receivables | $ 2,700,000 | $ 2,900,000

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- Definition Accounts Receivable Payment Terms + References No definition available. + Details
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Namespace Prefix: | bgi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | bgi_AccountsReceivablesLineItems
Namespace Prefix: | bgi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Trade Receivables + References No definition available. + Details
Name: | bgi_TradeReceivables
Namespace Prefix: | bgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant