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Income Taxes - Reconciliation of Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2018 | Apr. 30, 2017 | Apr. 30, 2016
Income Tax Disclosure [Abstract] |  |  |  |  |
Federal income taxes expected at the statutory rate | [1] | $ 5,355 |  | $ 66,957 | $ 50,783
State income taxes, less federal income tax benefit |  | 1,460 |  | 5,310 | 4,349
Stock compensation |  | (322) |  | (3,092) | 108
Business meals and entertainment |  | 302 |  | 296 | 233
Domestic production activity deduction |  | (335) |  | (5,728) | (4,414)
Research and development tax credit |  | (426) |  | (453) | (215)
Change in uncertain tax positions |  |  |  |  | (91)
Other |  | (403) |  | 162 | 382
Federal tax rate change on deferred taxes |  | (8,142) |  |  |
Total income tax (benefit)/expense | [3] | $ (2,511) | [2] | $ 63,452 | $ 51,135
[1] | We had a blended statutory rate of 30.4% in fiscal 2018 because of Tax Reform and a statutory rate of 35% in fiscal 2017 and 2016, respectively.
[2] | Amounts include an income tax benefit of approximately $8.7 million, primarily caused by the effect of Tax Reform, which resulted in the remeasurement of deferred tax assets and liabilities at lower enacted corporate federal tax rates.
[3] | 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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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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