Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation Plans and Awards - PSUs Narrative (Details)

v3.8.0.1
Stock-based Compensation Plans and Awards - PSUs Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 7 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Oct. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense $ 30,101 $ 32,754   $ 98,327 $ 103,841
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Requisite service period       3 years  
PSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Requisite service period     4 years    
Trailing average stock price period     90 days    
Grants in period (in shares) 0     0 1,725,000
Grant date fair value         $ 8,700
Stock-based compensation expense $ 300 $ 1,300   $ 1,700 $ 2,400
PSUs | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
90 Day trailing stock price to vest (usd per share)     $ 20.00    
PSUs | One-Year Performance Period          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percent     25.00%