XML 37 R26.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Compensation Expense and Related Tax Benefits
The following table presents compensation expense and the related tax benefits for equity awards recognized in the consolidated statements of income:
 
Three months ended June 30
 
Six months ended June 30
 
2018
 
2017
 
2018
 
2017
 
(in thousands)
Compensation expense
$
2,674

 
$
1,035

 
$
4,184

 
$
1,769

Tax benefit
(1,075
)
 
(1,940
)
 
(1,536
)
 
(2,684
)
Stock-based compensation expense, net of tax benefit
$
1,599

 
$
(905
)
 
$
2,648

 
$
(915
)