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Stock Based Compensation - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Apr. 09, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate unamortized outstanding stock based compensation $ 22,700,000   $ 15,200,000  
Number of shares issued for each share of Class B Common Stock and TMM Unit converted (in shares)       1
Class M Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Payment for settlement of awards $ 0 $ 1,400,000    
Non Performance Restricted Stock Units [Member] | Second Anniversary [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of units vested 33.00%      
Non Performance Restricted Stock Units [Member] | Third Anniversary [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of units vested 33.00%      
Non Performance Restricted Stock Units [Member] | Fourth Anniversary [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of units vested 33.00%      
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years) 3 years      
Stock options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period (in years) 10 years      
2013 Omnibus Equity Award Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate common stock available for future grants (in shares) 3,867,255