Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Income Statement [Abstract]
Net sales	$ 39,031	$ 39,000	$ 78,524	$ 75,423
Cost of products sold	35,434	32,605	69,253	63,147
Gross profit	3,597	6,395	9,271	12,276
Operating expenses	6,487	6,406	13,252	12,563
Operating loss	(2,890)	(11)	(3,981)	(287)
Pension income (expense)	89	(289)	178	(577)
Other income, net	46	66	98	120
Interest expense	(132)	(128)	(238)	(205)
Loss before income taxes	(2,887)	(362)	(3,943)	(949)
Income tax expense (benefit)	195	(197)	446	(176)
Net loss	(3,082)	(165)	(4,389)	(773)
Less: Net earnings attributable to the non-controlling interest	18	15	56	5
Net loss attributable to Kewaunee Scientific Corporation	$ (3,100)	$ (180)	$ (4,445)	$ (778)
Net loss per share attributable to Kewaunee Scientific Corporation stockholders
Basic (in dollars per share)	$ (1.11)	$ (0.07)	$ (1.60)	$ (0.28)
Diluted (in dollars per share)	$ (1.11)	$ (0.07)	$ (1.60)	$ (0.28)
Weighted average number of common shares outstanding
Basic (in shares)	2,789	2,759	2,783	2,757
Diluted (in shares)	2,789	2,759	2,783	2,757

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227