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Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Income Statement [Abstract]
Net sales	$ 36,423	$ 39,336
Cost of products sold	30,542	32,390
Gross profit	5,881	6,946
Operating expenses	6,157	6,170
Operating earnings (loss)	(276)	776
Pension Cost (Reversal of Cost)	(288)	(113)
Other income	54	169
Interest expense	(77)	(167)
Earnings (loss) before income taxes	(587)	665
Income tax expense	21	169
Net earnings (loss)	(608)	496
Less: net earnings (loss) attributable to the noncontrolling interest	(10)	25
Net earnings (loss) attributable to Kewaunee Scientific Corporation	$ (598)	$ 471
Net earnings (loss) per share attributable to Kewaunee Scientific Corporation stockholders:
Basic (in dollars per share)	$ (0.22)	$ 0.17
Diluted (in dollars per share)	$ (0.22)	$ 0.17
Weighted average number of common shares outstanding:
Basic (in shares)	2,756	2,750
Diluted (in shares)	2,756	2,771

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