Unaudited Pro forma Adjusted Summary (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Business Acquisition [Line Items]
Pro forma adjusted total revenue	$ 42,771	$ 31,621	$ 120,497	$ 85,142
Pro forma adjusted net loss attributable to Bazaarvoice, Inc.	$ (8,662)	$ (10,724)	$ (36,253)	$ (46,225)
Basic and diluted	$ (0.12)	$ (0.41)	$ (0.52)	$ (1.77)

The pro forma basic and diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

No definition available.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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