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Net Sales - Breakdown of Export Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2018		Apr. 30, 2017		Apr. 30, 2016
Concentration Risk [Line Items]
Net sales	$ 172,026	$ 157,376	$ 148,427	$ 129,021	$ 229,186	$ 233,523	$ 233,528	$ 206,951	$ 606,850	[1]	$ 903,188	[1]	$ 722,908	[1]
Europe
Concentration Risk [Line Items]
Net sales									9,586		11,545		8,913
Asia
Concentration Risk [Line Items]
Net sales									4,725		4,046		3,989
Latin America
Concentration Risk [Line Items]
Net sales									2,038		1,778		2,593
All others international
Concentration Risk [Line Items]
Net sales									12,388		10,418		9,120
Total International
Concentration Risk [Line Items]
Net sales									$ 28,737		$ 27,787		$ 24,615
[1] For the years ended April 30, 2018, 2017, and 2016, we allocated all of corporate overhead expenses except for interest and income taxes, such as general and administrative expenses and other corporate-level expenses, to both our Firearms and Outdoor Products & Accessories segments.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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