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Acquisition - Erwin Hymer Group - Pro Forma Information (Detail) $ / shares in Units, $ in Thousands | 3 Months Ended
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Oct. 31, 2018 USD ($) $ / shares
Business Combinations [Abstract] |
Net sales | $ | $ 2,327,268
Net income | $ | $ 22,461
Basic earnings per common share (in dollars per share) | $ / shares | $ 0.41
Diluted earnings per common share (in dollars per share) | $ / shares | $ 0.41

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