XML 75 R64.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stock Based Compensation - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Apr. 09, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate unamortized outstanding stock based compensation $ 30.1 $ 18.8  
Number of shares issued for each share of Class B Common Stock and TMM Unit converted (in shares)     1
Restricted stock units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of units vested 33.00%    
Performance-based RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
2013 Omnibus Equity Award Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate common stock available for future grants (in shares) 2,822,754