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Stock Repurchase - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended
Sep. 28, 2012
Mar. 28, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 21, 2012
Equity, Class of Treasury Stock [Line Items]            
Repurchase common stock held by promoter, one     0 0 339,384  
Repurchase share price, per share   $ 20 $ 0.01 $ 0.01    
Total consideration   $ 59,700,000        
Stock repurchase in cash     0 25,432,000 4,778,000  
Non-Voting Redeemable Preferred Stock with a liquidation preference     $ 1,000      
Professional and legal fees     514,000      
Redemption of outstanding shares of Series A Nonconvertible, Non-Voting Redeemable Preferred Stock           34,800,000
Decrease in dividend obligation after redemption of preferred stock 870,000          
Dividend rate on preferred stock paid semi-annually 5.00%          
Preferred stock redemption period     6 months      
Series A Nonconvertible, Non-Voting Redeemable Preferred Stock [Member]
            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchase from issued shares     34,800      
Promoter One [Member]
            
Equity, Class of Treasury Stock [Line Items]            
Repurchase common stock held by promoter, one   2,485,929        
Promoter Two [Member]
            
Equity, Class of Treasury Stock [Line Items]            
Repurchase common stock held by promoter, one   500,000        
Cash [Member]
            
Equity, Class of Treasury Stock [Line Items]            
Stock repurchase in cash     $ 24,900,000