Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Income Statement [Abstract]
Net sales	$ 32,372	$ 38,190	$ 111,802	$ 113,542
Costs of products sold	27,142	29,791	91,325	90,411
Gross profit	5,230	8,399	20,477	23,131
Operating expenses	5,305	5,971	17,031	16,360
Operating earnings (loss)	(75)	2,428	3,446	6,771
Other income	186	179	500	524
Interest expense, net	(76)	(78)	(258)	(226)
Earnings before income taxes	35	2,529	3,688	7,069
Income tax expense (benefit)	20	1,581	803	3,164
Net earnings	15	948	2,885	3,905
Less: net earnings attributable to the noncontrolling interest	37	35	86	120
Net earnings (loss) attributable to Kewaunee Scientific Corporation	$ (22)	$ 913	$ 2,799	$ 3,785
Net earnings (loss) per share attributable to Kewaunee Scientific Corporation stockholders
Basic (in dollars per share)	$ (0.01)	$ 0.33	$ 1.02	$ 1.39
Diluted (in dollars per share)	$ (0.01)	$ 0.32	$ 1.00	$ 1.36
Weighted average number of common shares outstanding
Basic (in shares)	2,744	2,722	2,741	2,717
Diluted (in shares)	2,794	2,784	2,799	2,772

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=115205541&loc=SL114868664-224227