Schedule of Fair Value of Consideration Transferred (Parenthetical) (Detail) In Thousands, unless otherwise specified	1 Months Ended
Aug. 31, 2012 Buddy Media, Inc.	May 31, 2011 Radian6 Technologies, Inc.
Business Acquisition [Line Items]
Fair value of equity interests issued as consideration, shares	1,392,774	436,167

Number of shares of equity interests issued or issuable to acquire entity.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration