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Commitments and Contingencies - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Jan. 31, 2018
USD ($)
Jul. 31, 2018
USD ($)
Case
Claim
Apr. 30, 2018
USD ($)
ft²
Schedule Of Commitments And Contingencies [Line Items]      
Number of Product liability cases | Case   7  
Number of Other product liability claims | Claim   7  
Capital lease payable   $ 34,206,000 $ 22,143,000
Logistics Facility | Boone County, Missouri      
Schedule Of Commitments And Contingencies [Line Items]      
Area of leased property | ft²     633,000
Capital lease payable   34,000,000  
Logistics Facility | Boone County, Missouri | Property, Plant, and Equipment      
Schedule Of Commitments And Contingencies [Line Items]      
Construction in progress   34,000,000  
Minimum      
Schedule Of Commitments And Contingencies [Line Items]      
Compensatory damages sought   75,000  
Minimum | Logistics Facility | Boone County, Missouri      
Schedule Of Commitments And Contingencies [Line Items]      
Estimated total cost of the building     $ 45,000,000
Estimated project cost to be recorded as right of use asset     30,000,000
Estimated expenses related to material handling equipment, information technology systems and other capital projects     25,000,000
Maximum      
Schedule Of Commitments And Contingencies [Line Items]      
Compensatory damages sought   $ 350,000  
Maximum | Logistics Facility | Boone County, Missouri      
Schedule Of Commitments And Contingencies [Line Items]      
Estimated total cost of the building     50,000,000
Estimated project cost to be recorded as right of use asset     35,000,000
Estimated expenses related to material handling equipment, information technology systems and other capital projects     $ 30,000,000
Gemini Technologies, Incorporated | Smith & Wesson Corp      
Schedule Of Commitments And Contingencies [Line Items]      
Compensatory damages sought $ 18,600,000