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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2014
Text Block [Abstract]  
Schedule of share-based compensation expenses
Total share-based compensation expenses were as follows (in thousands):
 
Three months ended June 30,
 
Six months ended June 30,
 
2014
 
2013
 
2014
 
2013
Option plan
$
6,375

 
$
5,853

 
$
11,953

 
$
10,977

Other share-based awards
6,688

 
7,973

 
11,099

 
18,105

Total share-based compensation before tax
13,063

 
13,826

 
23,052

 
29,082

Tax benefit
4,885

 
5,168

 
8,614

 
10,866

Total share-based compensation expense included in net income
$
8,178

 
$
8,658

 
$
14,438

 
$
18,216