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SHARE-BASED COMPENSATION PLANS (Tables)
12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Share-based compensation expense
The following amounts were recognized in our consolidated statements of income for share-based compensation awards for the years ended December 31:
(in thousands)202320222021
Restricted stock units$14,092 $16,632 $20,407 
Performance share unit awards4,127 3,840 4,338 
Stock options1,845 2,665 4,187 
Employee stock purchase plan461 539 545 
Total share-based compensation expense$20,525 $23,676 $29,477 
Income tax benefit$(7,408)$(6,853)$(7,714)
Weighted-average assumptions used in Black-Scholes option pricing model The following weighted-average assumptions were used in the Black-Scholes option pricing model to determine the fair value of these stock option grants:
2021
Risk-free interest rate0.7 %
Dividend yield2.9 %
Expected volatility42.0 %
Weighted-average option life (in years)4.8
Stock options rollforward Information regarding options issued under the current and all previous plans was as follows:
Number of options
(in thousands)
Weighted-average exercise price per option
Aggregate intrinsic value
(in thousands)
Weighted-average remaining contractual term
(in years)
Outstanding, December 31, 2022
1,732 $44.77 
Forfeited or expired(352)44.24 
Outstanding, December 31, 2023
1,380 44.91 $— 4.9
Exercisable at December 31, 2023
1,158 45.79 $— 4.5
Restricted stock units rollforward Information regarding our restricted stock units was as follows:
Number of units
(in thousands)
Weighted-average grant date fair value per unit
Weighted-average remaining vesting period
(in years)
Outstanding at December 31, 2022
1,045 $34.10 
Granted987 18.98 
Vested(475)35.77 
Forfeited(336)25.44 
Outstanding at December 31, 2023
1,221 23.34 2.4
Weighted-average assumptions used in Monte Carlo simulation pricing model, performance share awards
The following weighted-average assumptions were used in the Monte Carlo simulation model in determining the fair value of market-based performance share units granted:
202320222021
Risk-free interest rate4.4 %1.8 %0.3 %
Dividend yield6.1 %3.7 %4.4 %
Expected volatility54.3 %54.9 %55.6 %
Performance share awards rollforward
Information regarding unvested performance share units was as follows:
Performance share units
(in thousands)
Weighted-average grant date fair value per unit
Weighted-average remaining contractual term
(in years)
Unvested at December 31, 2022
461 $34.35 
Granted(1)
298 18.34 
Forfeited(235)27.12 
Unvested at December 31, 2023
524 28.50 1.5

(1) Reflects awards granted assuming achievement of performance goals at target.