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Discontinued Operations - Summary of Cumulative Gain on Disposal Activity (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components    $ 16,153   
Zhejiang Continental [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components   5,460  
Shenyang Jingli [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components   4,664  
Qingdao Kaixiang [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components   (1,818)  
Wuxi Ruizhong [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components   (2,642)  
Search Media International [Member]
      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain/(loss) on disposal of discontinued components   $ 10,489