Income Taxes - Additional Information (Detail) (USD $)				12 Months Ended				12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2013 Smith And Wesson Security Solutions Inc	Apr. 30, 2013 Federal	Apr. 30, 2013 State	Apr. 30, 2012 State	Apr. 30, 2013 State Minimum	Apr. 30, 2013 State Maximum
Income Tax [Line Items]
Net operating loss carryforwards				$ 8,200,000	$ 757,000	$ 23,100,000	$ 19,400,000
Operating loss carry forwards expiration date					Expire in fiscal 2020	Expire between April 30, 2015 and April 30, 2033
Acquisition date				Jul. 20, 2009
Operating carryforward expiring in fiscal 2013				108,000
Operating carryforward expiring thereafter				108,000
Tax credit carryforwards						2,300,000	1,900,000
State tax credit carryforwards expire date								Apr. 30, 2015	Apr. 30, 2025
Valuation allowances for net operating loss carryforward						973,000	827,000
Valuation allowances for tax credits						1,500,000	1,100,000
Valuation allowances for other tax carryforward						20,000	239,000
Gross tax-effected unrecognized tax benefits	1,091,000	1,150,000	1,123,000
Accrued interest and penalties related to uncertain tax positions	270,000	260,000
Unrecognized tax benefits, current income tax liabilities	$ 1,000,000