Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Restricted Shares) (Details)

v3.10.0.1
Stock-Based Compensation (Restricted Shares) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average GDFV of unvested shares (in dollars per share) $ 46.21    
Aggregate fair value of all restricted shares $ 21.9 $ 2.3 $ 1.3
RSAs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unvested restricted stock (in shares) 885    
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unvested restricted stock (in shares) 138