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Acquisition (Details 3) - EFCO Corporation - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 01, 2018 | Sep. 02, 2017 | Sep. 01, 2018 | Sep. 02, 2017
Business Acquisition [Line Items] |  |  |  |
Net sales | $ 362,133 | $ 351,988 | $ 698,664 | $ 696,039
Net earnings | $ 21,069 | $ 20,312 | $ 36,639 | $ 37,528
Earnings per share |  |  |  |
Basic (USD per share) | $ 750 | $ 700 | $ 1,300 | $ 1,300
Diluted (USD per share) | $ 740 | $ 700 | $ 1,290 | $ 1,300

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