Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Income Statement [Abstract]
Net sales	$ 33,339	$ 34,225	$ 108,762	$ 113,283
Cost of products sold	27,685	28,947	90,832	94,743
Gross profit	5,654	5,278	17,930	18,540
Operating expenses	6,030	7,350	18,593	19,875
Operating loss	(376)	(2,072)	(663)	(1,335)
Pension expense	(288)	(113)	(865)	(339)
Other income	51	84	171	382
Interest expense	(105)	(150)	(310)	(452)
Loss before income taxes	(718)	(2,251)	(1,667)	(1,744)
Income tax expense (benefit)	(813)	(350)	(989)	1,822
Net earnings (loss)	95	(1,901)	(678)	(3,566)
Less: Net earnings attributable to the noncontrolling interest	14	17	19	59
Net earnings (loss) attributable to Kewaunee Scientific Corporation	$ 81	$ (1,918)	$ (697)	$ (3,625)
Net earnings (loss) per share attributable to Kewaunee Scientific Corporation stockholders
Basic (in dollars per share)	$ 0.03	$ (0.70)	$ (0.25)	$ (1.32)
Diluted (in dollars per share)	$ 0.03	$ (0.70)	$ (0.25)	$ (1.32)
Weighted average number of common shares outstanding
Basic (in shares)	2,762	2,750	2,759	2,750
Diluted (in shares)	2,789	2,750	2,759	2,750

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://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=116634182&loc=SL114868664-224227