Stockholders' Equity (Details)
 6 Months Ended
Jun. 30, 2017
USD ($)
votes
$ / shares
shares
Dec. 31, 2016
$ / shares
shares
Nov. 01, 2016
USD ($)
Class of Stock [Line Items]      
Preferred Stock, Shares Authorized | shares 10,000,000 10,000,000  
Preferred Stock, Par Value (in usd per share) | $ / shares $ 0.0001 $ 0.0001  
Stock Repurchase Program, Authorized Amount | $     $ 200,000,000
Stock Repurchased and Retired During Period, Shares | shares 703,086    
Stock Repurchased, Average Cost Per Share | $ / shares $ 56.91    
Stock Repurchased and Retired During Period, Value | $ $ 40,000,000    
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ $ 140,000,000    
Class B common stock      
Class of Stock [Line Items]      
Common Stock, Shares Authorized | shares 75,000,000 75,000,000  
Common Stock, Par Value (in usd per share) | $ / shares $ 0.0001 $ 0.0001  
Votes per Share Entitled to Share Holder | votes 10    
Class A common stock      
Class of Stock [Line Items]      
Common Stock, Shares Authorized | shares 750,000,000 750,000,000  
Common Stock, Par Value (in usd per share) | $ / shares $ 0.0001 $ 0.0001  
Votes per Share Entitled to Share Holder | votes 1