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Summarized Results of Business Held for Sale (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Loss from discontinued operations, net of tax $ (759) $ (6,893)
Careers - China, Latin America and Turkey
   
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net revenue   2,399
Loss from discontinued operations, net of tax $ (759) $ (6,893)