Minimum Royalties to be Collected in Future (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013
Future Minimum Payments Receivable [Line Items]
2014	$ 1,240
2015	1,185
2016	909
2017	577
Thereafter	1,708
Total minimum royalties	$ 5,619

Future Minimum Royalty Payments Receivable In Three Years

No definition available.

Name:	swhc_FutureMinimumRoyaltyPaymentsReceivableInThreeYears
Namespace Prefix:	swhc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant