Document and Entity Information - shares	6 Months Ended
	Oct. 31, 2017	Dec. 11, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
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	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		2,720,486