Commitments and Contingencies - Additional Information (Detail) $ in Millions	1 Months Ended	9 Months Ended
	Jan. 31, 2018 USD ($)	Jan. 31, 2020 USD ($) Case Claim Plaintiff	Jan. 31, 2020 CAD ($) Case Claim Plaintiff
Schedule Of Commitments And Contingencies [Line Items]
Number of Product liability cases | Case		9	9
Number of Other product liability claims | Claim		5	5
Minimum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		$ 75,000
Maximum
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		$ 18,600,000
Putative Class
Schedule Of Commitments And Contingencies [Line Items]
Date of actions filed		December 16, 2019	December 16, 2019
Number of plaintiffs | Plaintiff		2	2
Putative Class | General Damages
Schedule Of Commitments And Contingencies [Line Items]
Aggregate damages claims			$ 50
Putative Class | Compensatory or Punitive Damages
Schedule Of Commitments And Contingencies [Line Items]
Aggregate damages claims			$ 100
John Pidcock
Schedule Of Commitments And Contingencies [Line Items]
Number of plaintiffs | Plaintiff		2	2
John Pidcock | Preferential Transfers
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		$ 4,200,000
John Pidcock | Turnover of Goods
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought		$ 1,500,000
Gemini Technologies, Incorporated | Smith & Wesson Corp
Schedule Of Commitments And Contingencies [Line Items]
Compensatory damages sought	$ 18,600,000