Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Income Statement [Abstract]
Net sales	$ 50,123	$ 39,493
Cost of products sold	43,927	33,819
Gross profit	6,196	5,674
Operating expenses	6,592	6,765
Operating loss	(396)	(1,091)
Pension (expense) income	(27)	89
Other income, net	467	52
Interest expense	(384)	(106)
Loss before income taxes	(340)	(1,056)
Income tax expense	379	251
Net loss	(719)	(1,307)
Less: Net earnings attributable to the non-controlling interest	28	38
Net loss attributable to Kewaunee Scientific Corporation	$ (747)	$ (1,345)
Net loss per share attributable to Kewaunee Scientific Corporation stockholders
Basic (in dollars per share)	$ (0.27)	$ (0.48)
Diluted (in dollars per share)	$ (0.27)	$ (0.48)
Weighted average number of common shares outstanding
Basic (in shares)	2,807	2,777
Diluted (in shares)	2,807	2,777