Document and Entity Information - shares	9 Months Ended
	Jan. 31, 2019	Mar. 11, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	KEQU
Entity Registrant Name	KEWAUNEE SCIENTIFIC CORP /DE/
Entity Central Index Key	0000055529
Current Fiscal Year End Date	--04-30
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		2,746,598