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Document and Entity Information - shares
 3 Months Ended
Jul. 31, 2025
Sep. 02, 2025
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Registrant Name Smith & Wesson Brands, Inc.  
Entity Central Index Key 0001092796  
Current Fiscal Year End Date --04-30  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity File Number 001-31552  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 87-0543688  
Entity Address, Address Line One 1852 Proffitt Springs Road  
Entity Address, City or Town Maryville  
Entity Address, State or Province TN  
Entity Address, Postal Zip Code 37801  
City Area Code 800  
Local Phone Number 331-0852  
Document Quarterly Report true  
Document Transition Report false  
Entity Common Stock, Shares Outstanding   44,341,781
Title of each Class Common Stock, par value $0.001 per share  
Trading Symbol SWBI  
Name of exchange on which registered NASDAQ