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Stock Compensation Plans
 9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [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 September 30,Nine Months Ended September 30,
(DOLLARS IN THOUSANDS)2020201920202019
Equity-based awards$8,195 $8,126 $27,177 $26,426 
Liability-based awards850 39 3,347 2,830 
Total stock-based compensation expense9,045 8,165 30,524 29,256 
Less: Tax benefit(1,803)(1,143)(5,765)(4,666)
Total stock-based compensation expense, after tax$7,242 $7,022 $24,759 $24,590