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Nu Aire Acquisition - Pro Forma Information (Details) - Nu Aire - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2026 | Jan. 31, 2025 | Jan. 31, 2026 | Jan. 31, 2025
Business Acquisition [Line Items] |  |  |  |
Net sales | $ 69,399 | $ 67,167 | $ 210,599 | $ 199,548
Net earnings | $ 692 | $ 1,856 | $ 6,230 | $ 6,812
Net earnings per share attributable to Kewaunee Scientific Corporation stockholders: |  |  |  |
Basic (in USD per share) | $ 0.24 | $ 0.65 | $ 2.18 | $ 2.38
Diluted (in USD per share) | $ 0.23 | $ 0.62 | $ 2.09 | $ 2.29

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