XML 88 R68.htm IDEA: XBRL DOCUMENT v3.22.2

Leases - Summary of Consolidated Statement Of Earnings (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Mar. 26, 2022	Mar. 27, 2021	Mar. 28, 2020
Variable Rent Expense [Member]
Summary Of Consolidated Statement Of Earnings [Line Items]
Rent concessions recognized amount	$ 1.5	$ 4.1	$ 0.0

X

- Definition

Rent concessions recognized amount.

+ References

No definition available.

+ Details

Name:	bgi_RentConcessionsRecognizedAmount
Namespace Prefix:	bgi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Summary of consolidated statement of earnings.

+ References

No definition available.

+ Details

Name:	bgi_SummaryOfConsolidatedStatementOfEarningsLineItems
Namespace Prefix:	bgi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=bgi_VariableRentExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: