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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of share-based compensation expenses
Total share-based compensation expenses were comprised as follows (in thousands):
 
Three months ended June 30,
 
Six months ended June 30,
 
2019
 
2018
 
2019
 
2018
Option awards
$
6,801

 
$
6,758

 
$
8,113

 
$
9,815

Other share-based awards
14,839

 
13,847

 
24,457

 
19,736

Total share-based compensation before tax
21,640

 
20,605

 
32,570

 
29,551

Tax benefit
5,151

 
4,904

 
7,752

 
7,033

Total share-based compensation expense included in net income
$
16,489

 
$
15,701

 
$
24,818

 
$
22,518