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Acquisitions - Summary of Operating Information on Pro Forma Basis (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Feb. 28, 2021 | Feb. 29, 2020 | Feb. 28, 2019
Business Combinations [Abstract] |  |  |
Pro forma net sales | $ 373,959 | $ 470,132 | $ 474,124
Pro forma net earnings | $ 24,659 | $ 38,261 | $ 38,474
Pro forma earnings per share - diluted | $ 0.95 | $ 1.47 | $ 1.49

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