XML 64 R52.htm IDEA: XBRL DOCUMENT v3.7.0.1
SHARE-BASED AWARDS AND OPTIONS - Stock Options Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 12,337 $ 10,325 $ 21,153 $ 17,372
Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair market value (as a percentage) 100.00%   100.00%  
Stock option term     10 years  
Granted (in shares)     124,000  
Share-based compensation expense $ 700 $ 400 $ 1,300 700
Aggregate intrinsic value of stock options exercised     7,500 $ 4,600
Total unrecognized compensation cost $ 4,700   $ 4,700  
Total unrecognized compensation cost, weighted average period     2 years 2 months 12 days  
Weighted average grant date fair value for each option granted (in USD per share) $ 23.68   $ 23.68  
Granted Before Fiscal 2015 | Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     4 years  
Granted Before Fiscal 2015 | Employee stock option | Performance period. year one        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     25.00%  
Granted Before Fiscal 2015 | Employee stock option | Performance period, year two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     25.00%  
Granted Before Fiscal 2015 | Employee stock option | Performance period, year three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     25.00%  
Granted Before Fiscal 2015 | Employee stock option | Performance period, year four        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     25.00%  
Granted Fiscal 2015 | Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period     3 years  
Granted Fiscal 2015 | Employee stock option | Performance period. year one        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     33.00%  
Granted Fiscal 2015 | Employee stock option | Performance period, year two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     33.00%  
Granted Fiscal 2015 | Employee stock option | Performance period, year three        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of award vesting rights     33.00%  
Granted Fiscal 2017 | Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)     123,958  
Granted Fiscal 2016 | Employee stock option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)       0