XML 68 R39.htm IDEA: XBRL DOCUMENT v3.10.0.1
Share-based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of share-based compensation expense
Share-based compensation expense was as follows:
 
For the three months ended June 30,
 
For the six months ended June 30,
 
2018
 
2017
 
2018
 
2017
Stock options, net of estimated forfeitures
$
2,074

 
$
9,550

 
$
(5,092
)
 
$
28,831

Restricted stock awards
5,613

 
3,399

 
9,023

 
6,506

Total
$
7,687

 
$
12,949

 
$
3,931

 
$
35,337