XML 22 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 30, 2014 Complaints
Commitments And Contingencies Disclosure [Abstract]
Number of complaints	9
Gift card value	$ 25
Merchandise voucher value	10
Settlement amount	$ 1,000,000

X

- Definition

The value of a gift card offered as part of a legal settlement.

+ References

No definition available.

+ Details

Name:	bgfv_GiftCardValue
Namespace Prefix:	bgfv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The value of a merchandise voucher offered as part of a legal settlement.

+ References

No definition available.

+ Details

Name:	bgfv_MerchandiseVoucherValue
Namespace Prefix:	bgfv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant