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Related Parties - Additional Information (Detail) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 16, 2010
Sep. 14, 2010
Sep. 14, 2010
Westbury Agreement [Member]
Dec. 31, 2013
Westbury Agreement [Member]
Dec. 31, 2013
Director [Member]
Dec. 31, 2012
Director [Member]
Dec. 31, 2011
Director [Member]
Aug. 30, 2013
MMP [Member]
Aug. 30, 2013
MMP [Member]
Westbury Agreement [Member]
Jul. 02, 2013
MMP [Member]
Westbury Agreement [Member]
Sep. 14, 2010
MMP [Member]
Westbury Agreement [Member]
Notes Receivable Related Parties [Line Items]                            
Common stock repurchased 456,603         7,716,669                
Common stock repurchase price $ 0.01 $ 0.01       $ 6.25 $ 7.25              
Common stock repurchase value           $ 48,500,000                
Purchase of option           5,000,000                
Shares authorized to be repurchased 0.0 1,000,000.0 1,000,000.0 4,578,894 7,716,669 7,700,000           3,850,000    
Repurchase of treasury stock, shares                       3,850,000    
Percentage of Holding                     50.00% 50.00%    
Common stock, per share amount                     $ 6.65 $ 6.65    
Payment for acquisition of treasury stock 26,468,000 5,716,000 9,513,000               25,700,000 25,700,000    
Number of days moving average share price calculation                       60 days 60 days  
Date of expiration                           Sep. 30, 2013
Lease paid by company 35,100,000 33,700,000 32,600,000         2,100,000 2,000,000 2,000,000        
Legal charges paid 400,000 200,000 500,000                      
Fees paid to subsidiary 300,000 300,000 400,000                      
Amount of letter of credit for CPA firm $ 1,900,000 $ 1,900,000