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SHARE-BASED COMPENSATION PLANS (Tables)
12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Share-based compensation expense
The following amounts were recognized in our consolidated statements of income (loss) for share-based compensation awards for the years ended December 31:
(in thousands)202120202019
Restricted shares and restricted stock units$20,407 $15,066 $13,411 
Performance share unit awards4,338 2,590 2,907 
Stock options4,187 3,689 2,954 
Employee stock purchase plan545 479 430 
Total share-based compensation expense$29,477 $21,824 $19,702 
Income tax benefit$(7,714)$(5,779)$(5,350)
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 stock options granted:
202120202019
Risk-free interest rate0.7 %1.3 %2.3 %
Dividend yield2.9 %3.2 %2.7 %
Expected volatility42.0 %25.8 %24.5 %
Weighted-average option life (in years)4.85.45.3
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, 20181,245 $62.04 
Granted644 44.72 
Exercised(21)32.42 
Forfeited or expired(521)62.75 
Outstanding, December 31, 20191,347 53.92 
Granted1,030 38.13 
Exercised(12)38.80 
Forfeited or expired(231)54.87 
Outstanding, December 31, 20202,134 46.28 
Granted440 41.50 
Exercised(31)27.56 
Forfeited or expired(357)44.87 
Outstanding, December 31, 20212,186 45.81 $69 6.7
Exercisable at December 31, 2019485 $61.44 
Exercisable at December 31, 2020654 57.68 
Exercisable at December 31, 20211,015 51.48 $14 4.8
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 contractual term
(in years)
Outstanding at December 31, 2018195 $45.41 
Granted611 44.73 
Vested(93)49.31 
Forfeited(49)45.40 
Outstanding at December 31, 2019664 44.35 
Granted628 37.25 
Vested(282)45.18 
Forfeited(83)40.44 
Outstanding at December 31, 2020927 39.68 
Granted642 42.90 
Vested(425)40.50 
Forfeited(112)39.78 
Outstanding at December 31, 20211,032 41.37 3.0
Restricted shares rollforward
Information regarding unvested restricted shares was as follows:
Number of shares
(in thousands)
Weighted-average grant date fair value per share
Unvested at December 31, 2018168 $66.02 
Vested(117)63.15 
Forfeited(25)73.62 
Unvested at December 31, 201926 71.61 
Vested(16)72.79 
Forfeited(2)61.43 
Unvested at December 31, 202071.02 
Vested(8)71.02 
Unvested at December 31, 2021— — 
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:
202120202019
Risk-free interest rate0.3 %1.4 %2.3 %
Dividend yield4.4 %2.4 %3.1 %
Expected volatility55.6 %28.6 %26.8 %
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, 2018250 $67.54 
Granted(1)
151 41.79 
Vested(118)59.67 
Forfeited(38)54.42 
Adjustment for performance results achieved(2)
54.42 
Unvested at December 31, 2019252 57.64 
Granted(1)
127 36.06 
Vested(61)71.03 
Forfeited(23)62.18 
Unvested at December 31, 2020295 45.20 
Granted(1)
208 32.46 
Forfeited(68)67.77 
Unvested at December 31, 2021435 35.56 1.1

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

(2) Reflects the difference between the awards earned at the end of the performance period and the target number of shares.