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Discontinued Operations - Schedule 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]      
Total consideration on disposal   (1,700)  
Add/Less: Extinguishment of current accounts   80  
Add: Earn-out consideration payable settled   8,250  
Add/Less: Net book value of assets in connection with the disposal/divestiture   (1,170)  
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]      
Total consideration on disposal       
Add/Less: Extinguishment of current accounts   1,586  
Add: Extinguishment of acquisition consideration payable   1,437  
Add/Less: Net book value of liability in connection with the disposal/divestiture   1,641  
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]      
Total consideration on disposal       
Add/Less: Extinguishment of current accounts   1,891  
Add: Extinguishment of acquisition consideration payable   4,126  
Add/Less: Net book value of assets in connection with the disposal/divestiture   (4,574)  
Less: Goodwill writeoff   (3,261)  
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]      
Total consideration on disposal   147  
Add: Obligation exempted   328  
Add/Less: Extinguishment of current accounts   1,414  
Add: Extinguishment of acquisition consideration payable   322  
Add/Less: Net book value of assets in connection with the disposal/divestiture   (1,750)  
Less: Goodwill writeoff   (3,103)  
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]      
Total consideration on disposal   (421)  
Add/Less: Extinguishment of current accounts   107,243  
Add/Less: Net book value of liability in connection with the disposal/divestiture   118,153  
Gain/(loss) on disposal of discontinued components   $ 10,489