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Description of the Company and Basis of Presentation (Details) (USD $)
 0 Months Ended 9 Months Ended 12 Months Ended 0 Months Ended
Oct. 19, 2014
Dec. 27, 2014
store
state
Vote
Mar. 28, 2015
Mar. 29, 2014
state
store
Oct. 31, 2014
Oct. 29, 2014
Jun. 09, 2014
Jun. 08, 2014
Fiscal Year                
Fiscal year period     364 days 364 days        
Fiscal quarter period, except for a 53-week fiscal year   91 days            
Fiscal quarter period, for a 53-week fiscal year   98 days            
Business Operations                
Number of shares authorized 100,000,000us-gaap_CommonStockSharesAuthorized 100,000,000us-gaap_CommonStockSharesAuthorized   100,000,000us-gaap_CommonStockSharesAuthorized        
Number of shares issued   25,709,194us-gaap_CommonStockSharesIssued   18,929,000us-gaap_CommonStockSharesIssued        
Number of shares outstanding   25,709,194us-gaap_CommonStockSharesOutstanding   18,929,000us-gaap_CommonStockSharesOutstanding        
Number of votes per common share   1boot_NumberOfVotesPerCommonShare            
Percentage of the entity's shares owned by minority stockholders of the Predecessor             5.00%boot_PercentageOfEntitysSharesOwnedByMinorityStockholdersOfPredecessor  
Non-controlling interest   $ 0us-gaap_MinorityInterest   $ 4,087,000us-gaap_MinorityInterest        
Number of stores   166us-gaap_NumberOfStores   152us-gaap_NumberOfStores        
Number of states in which the Company operates   26us-gaap_NumberOfStatesInWhichEntityOperates   23us-gaap_NumberOfStatesInWhichEntityOperates        
Number of stores operated under other name   2boot_NumberOfStoresOperatedUnderOtherName            
Common Stock, par value (in dollars per share) $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare   $ 0.0001us-gaap_CommonStockParOrStatedValuePerShare        
Preferred Stock, shares authorized (in shares) 10,000,000us-gaap_PreferredStockSharesAuthorized 10,000,000us-gaap_PreferredStockSharesAuthorized   10,000,000us-gaap_PreferredStockSharesAuthorized        
Preferred Stock, par value (in dollars per share) $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare   $ 0.0001us-gaap_PreferredStockParOrStatedValuePerShare        
Stock split, conversion ratio 0.04us-gaap_StockholdersEquityNoteStockSplitConversionRatio1              
Net proceeds from initial public offering   82,224,000boot_ProceedsFromIssuanceInitialPublicOfferingNet            
IPO and over-allotments                
Business Operations                
Shares issued (in shares)         5,750,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= boot_IpoAndOverAllotmentOptionMember		      
Share Price         $ 16.00us-gaap_SharePrice
/ us-gaap_SubsidiarySaleOfStockAxis
= boot_IpoAndOverAllotmentOptionMember		      
IPO                
Business Operations                
Shares issued (in shares)           5,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember		    
Net proceeds from initial public offering           82,200,000boot_ProceedsFromIssuanceInitialPublicOfferingNet
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember		    
Underwriting discount           6,400,000boot_PaymentsOfUnderwritingDiscounts
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember		    
Related fees and expenses           $ 3,300,000us-gaap_PaymentsOfStockIssuanceCosts
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_IPOMember		    
Over-allotments                
Business Operations                
Shares issued (in shares)         750,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_OverAllotmentOptionMember		      
WW Holding Corporation | Boot Barn Holding Corporation                
Business Operations                
Ownership percentage (as a percent)               95.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= boot_WWHoldingCorporationMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= boot_BootBarnHoldingCorporationMember
Boot Barn Holding Corporation                
Business Operations                
Number of shares issued             1,000,000us-gaap_CommonStockSharesIssued
/ dei_LegalEntityAxis
= boot_BootBarnHoldingCorporationMember		  
Ownership percentage of noncontrolling shareholders (as a percent)             5.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= boot_BootBarnHoldingCorporationMember