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Inventories - Summary of Inventories (Parenthetical) (Detail) - USD ($) $ in Thousands | Apr. 30, 2017 | Apr. 30, 2016
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Inventory [Line Items] |  |  |
Finished goods | [1] | $ 61,080 | $ 26,574
Taylor Brands, LLC, Crimson Trace Corporation and Ultimate Survival Technologies, Inc. |  |  |
Inventory [Line Items] |  |  |
Finished goods |  | $ 22,500 |
[1] | The large increase in finished goods inventory was primarily due to the 2017 Acquisitions, which amounted to $22.5 million. The large increase in finished parts was primarily due to our Firearms segment inventory.

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