XML 39 R31.htm IDEA: XBRL DOCUMENT
v3.25.1

Summary of Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 30, 2025 USD ($) Segment | Mar. 31, 2024 USD ($) | Dec. 29, 2024 USD ($) Supplier
Accounting Policies [Line Items] |  |  |
Reporting period, minimum | 364 days |  |
Reporting period, maximum | 371 days |  |
Interim reporting periods | 91 days | 91 days |
Number of reportable segment | Segment | 1 |  |
Concentration risk, suppliers | Supplier |  |  | 600
Concentration risk, largest supplier | Supplier |  |  | 20
Suppliers accounted for total purchases |  |  | 39.30%
Percentage of vendors represented greater than of total purchases |  |  | 5.00%
Vendor represented greater than of total purchases | Supplier |  |  | 1
Number of performance obligation | one | one |
Stored value card redemption revenue recognized | $ 1,500,000 | $ 1,400,000 |
Stored-value card liabilities | $ 9,615,000 |  | $ 9,732,000
Stored value cards redeemed period | 2 years |  |
Impairment charges | $ 0 | 0 | 800,000
Accounting Standards Update 2024-03 |  |  |
Accounting Policies [Line Items] |  |  |
Change in Accounting Principle, Accounting Standards Update, Early Adoption [true false] | true |  |
Merchandise [Member] | Accounting Standards Update 2014-09 |  |  |
Accounting Policies [Line Items] |  |  |
Estimated right of return related to estimated sales returns | $ 500,000 |  | 700,000
Allowance for sales returns reserve | 1,100,000 |  | $ 1,500,000
Stored Value Card Breakage Revenue [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Recognized stored value card breakage revenue | $ 100,000 | $ 100,000 |
One vendor [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Suppliers accounted for total purchases |  |  | 5.10%

X
- Definition Accounting policies. + References No definition available. + Details
Name: | bgfv_AccountingPoliciesLineItems
Namespace Prefix: | bgfv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Concentration Of Risk Number Of Major Customers + References No definition available. + Details
Name: | bgfv_ConcentrationOfRiskNumberOfMajorCustomers
Namespace Prefix: | bgfv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Concentration of risk percentage of purchases threshold. + References No definition available. + Details
Name: | bgfv_ConcentrationOfRiskPercentageOfPurchasesThreshold
Namespace Prefix: | bgfv_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Concentration risk number of customers that accounted for greater than five percent of purchases. + References No definition available. + Details
Name: | bgfv_ConcentrationRiskNumberOfCustomersThatAccountedForGreaterThanFivePercentOfPurchases
Namespace Prefix: | bgfv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Concentration Risk Number Of Suppliers + References No definition available. + Details
Name: | bgfv_ConcentrationRiskNumberOfSuppliers
Namespace Prefix: | bgfv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Concentration risk percentage of purchases. + References No definition available. + Details
Name: | bgfv_ConcentrationRiskPercentageOfPurchases
Namespace Prefix: | bgfv_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum interim period for which financial information can be reported for the entity. Translates to a 13- or 14-week fiscal quarter, the latter of which can occur approximately every five years based upon the entity's calendar shift relative to the impact of a leap year on the entity's fiscal calendar and an extra day each year resulting from a 52-week fiscal year. + References No definition available. + Details
Name: | bgfv_FinancialInformationInterimReportingPeriodMaximum
Namespace Prefix: | bgfv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum period for which financial information can be reported for the entity. Translates to a 53-week fiscal year, which can occur approximately every five years based upon the entity's calendar shift relative to the impact of a leap year on the entity's fiscal calendar and an extra day each year resulting from a 52-week fiscal year. + References No definition available. + Details
Name: | bgfv_FinancialInformationReportingPeriodMaximum
Namespace Prefix: | bgfv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum period for which financial information can be reported for the entity. Translates to a 52-week fiscal year. + References No definition available. + Details
Name: | bgfv_FinancialInformationReportingPeriodMinimum
Namespace Prefix: | bgfv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue recognition gift cards redemption period. + References No definition available. + Details
Name: | bgfv_RevenueRecognitionGiftCardsRedemptionPeriod
Namespace Prefix: | bgfv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue recognition sales returns in estimated right of returns. + References No definition available. + Details
Name: | bgfv_RevenueRecognitionSalesReturnsInEstimatedRightOfReturns
Namespace Prefix: | bgfv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Stored value card liabilities. + References No definition available. + Details
Name: | bgfv_StoredValueCardLiabilities
Namespace Prefix: | bgfv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Stored value card redemption revenue recognized. + References No definition available. + Details
Name: | bgfv_StoredValueCardRedemptionRevenueRecognized
Namespace Prefix: | bgfv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Indicates (true false) whether accounting standards update was early adopted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476173/280-10-65-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 9 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482615/740-10-65-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 405 -SubTopic 50 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477123/405-50-65-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482477/820-10-65-13 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482477/820-10-65-13 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 5 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479654/326-10-65-5 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 20 -Name Accounting Standards Codification -Section 65 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480528/815-20-65-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 65 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479845/805-20-65-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479654/326-10-65-4 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483194/926-20-65-2 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 10 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479654/326-10-65-2 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476166/350-60-65-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 65 -Paragraph 3 -Subparagraph (c) -SubTopic 10 -Topic 326 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479654/326-10-65-3 + Details
Name: | us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateEarlyAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:booleanItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of right to recover product from customer on settling refund liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-27 + Details
Name: | us-gaap_ContractWithCustomerRightToRecoverProduct
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-2 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-4 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 47 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-47 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 54 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-54 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 + Details
Name: | us-gaap_RevenuePerformanceObligationDescriptionOfTiming
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=bgfv_AccountingStandardsUpdate2024-03Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=bgfv_MerchandiseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=bgfv_Asu201409Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=bgfv_StoredValueCardBreakageRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionBySupplierAxis=bgfv_VendorOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |