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Stock Compensation Plans
3 Months Ended
Mar. 31, 2019
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 PRSUs, restricted stock units (RSUs), 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 March 31,
(DOLLARS IN THOUSANDS)
2019
 
2018
Equity-based awards
$
7,604

 
$
7,620

Liability-based awards
730

 
155

Total stock-based compensation expense
8,334

 
7,775

Less: Tax benefit
(1,382
)
 
(1,563
)
Total stock-based compensation expense, after tax
$
6,952

 
$
6,212