Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Grants of Stock Options (Details)

v3.19.1
Stock-Based Compensation - Grants of Stock Options (Details) - CEO - Series C common stock
shares in Thousands
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Options  
Stock Based Compensation  
Options granted (in shares) | shares 41
Grant date fair value | $ / shares $ 25.46
RSU  
Stock Based Compensation  
Granted (in shares) | shares 25
Grant date fair value | $ / shares $ 88.99
Vesting period 1 year