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Condensed Financial Information of the Parent Company - Condensed Balance Sheets (Parenthetical) (Detail) (USD $)
Dec. 31, 2013
Dec. 11, 2013
Dec. 31, 2012
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, par value $ 0.01    
Ordinary shares, shares authorized      100,000,000,000
Ordinary shares, shares issued      100,000,000
Ordinary shares, Shares outstanding    105,136,436 100,000,000
Class A Ordinary Shares [Member]
     
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, Shares outstanding   36,347,496  
Class B Ordinary Shares [Member]
     
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, Shares outstanding   68,788,940  
Parent Company [Member]
     
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, par value $ 0.01    
Ordinary shares, shares authorized 100,000,000,000   100,000,000,000
Ordinary shares, shares issued     100,000,000
Ordinary shares, Shares outstanding     100,000,000
Parent Company [Member] | Class A Ordinary Shares [Member]
     
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, par value $ 0.01    
Ordinary shares, shares authorized 99,931,211,060    
Ordinary shares, shares issued 36,347,496    
Ordinary shares, Shares outstanding 36,347,496     
Parent Company [Member] | Class B Ordinary Shares [Member]
     
Condensed Balance Sheet Statements, Captions [Line Items]      
Ordinary shares, par value $ 0.01    
Ordinary shares, shares authorized 68,788,940    
Ordinary shares, shares issued 68,788,940    
Ordinary shares, Shares outstanding 68,788,940