Document and Entity Information - shares	3 Months Ended
	Jul. 31, 2016	Sep. 02, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	Bazaarvoice Inc
Entity Central Index Key	0001330421
Current Fiscal Year End Date	--04-30
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jul. 31, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Trading Symbol	BV
Amendment Flag	false
Entity Common Stock, Shares Outstanding		82,835,422