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Document and Entity Information - shares
6 Months Ended
Oct. 31, 2015
Dec. 04, 2015
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 31, 2015  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Trading Symbol SWHC  
Entity Registrant Name Smith & Wesson Holding Corporation  
Entity Central Index Key 0001092796  
Current Fiscal Year End Date --04-30  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   54,558,379