Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation Plans and Awards - Stock options narrative (Details)

v3.7.0.1
Stock-based Compensation Plans and Awards - Stock options narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 29,618 $ 38,655
Stock options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 1,900 $ 6,800