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Stock Compensation Plans
 6 Months Ended
Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock Compensation Plans
Stock Compensation Plans:
The Company has various plans under which its officers, senior management, other key employees and directors may be granted equity-based awards. Equity awards outstanding under the plans include PRS, restricted stock units (“RSUs”), stock options, SSARs and Long-Term Incentive Plan awards; liability-based awards outstanding under the plans are cash-settled RSUs.
Stock-based compensation expense and related tax benefits were as follows: 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(DOLLARS IN THOUSANDS)
2014
 
2013
 
2014
 
2013
Equity-based awards
$
9,338

 
$
9,527

 
$
14,034

 
$
14,050

Liability-based awards
1,519

 
600

 
2,764

 
2,051

Total stock-based compensation expense
10,857

 
10,127

 
16,798

 
16,101

Less: tax benefit
(3,345
)
 
(3,114
)
 
(5,071
)
 
(5,021
)
Total stock-based compensation expense, after tax
$
7,512

 
$
7,013

 
$
11,727

 
$
11,080