For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

Related Party Transactions - Accounts Receivable from Related Parties (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Total related party accounts receivable		$ 451
J-Stream [Member]
Related Party Transaction [Line Items]
Total related party accounts receivable		432
Dentsu [Member]
Related Party Transaction [Line Items]
Total related party accounts receivable		$ 19