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Acquisitions - Summary of Operating Information on Pro Forma Basis (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
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Aug. 31, 2016 | Aug. 31, 2016
Business Combinations [Abstract] |  |
Pro forma net sales | $ 100,389 | $ 199,942
Pro forma net earnings | $ 7,034 | $ 13,967
Pro forma earnings per share - diluted | $ 0.27 | $ 0.54

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