XML 90 R64.htm IDEA: XBRL DOCUMENT v3.7.0.1
Share-based Compensation - Stock Option Grant (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jan. 31, 2017
Jun. 30, 2017
Mar. 31, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock compensation expense   $ 12,949   $ 13,531 $ 35,337 $ 20,611
Employee Stock Option            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock compensation expense   9,550   $ 11,141 $ 28,831 $ 16,296
Employee Stock Option | Class B Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock compensation expense   $ 5,100        
Chief Executive Officer | Executive Profits Interests | Employee Stock Option | Class B Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options granted in the period (in shares) 2,773,000          
Stock compensation expense     $ 14,600      
Chief Executive Officer | Executive Profits Interests | Employee Stock Option | Class B Common Stock | Tranche One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price of stock options granted in the period (in dollars per share) $ 17.00          
Percent of options subject to exercise price range 50.00%          
Chief Executive Officer | Executive Profits Interests | Employee Stock Option | Class B Common Stock | Tranche Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price of stock options granted in the period (in dollars per share) $ 21.32          
Percent of options subject to exercise price range 50.00%