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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2022
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense and Related Tax Benefit
Total stock-based compensation expense and the related tax benefit were as follows:
Three Months Ended June 30,Six Months Ended June 30,
In thousands2022202120222021
Stock options$278 $371 $562 $711 
Restricted stock units5,869 5,511 11,453 11,442 
Unrestricted stock awards258 206 517 433 
Phantom stock units582 1,225 772 2,342 
Total stock-based compensation$6,987 $7,313 $13,304 $14,928 
Related tax benefit$1,434 $1,318 $2,803 $2,681 
Employee Stock Options Activity
A summary of our stock option activity is as follows:
SharesWeighted
Average Exercise
Price per Share		Weighted Average
Remaining
Contractual Life		Aggregate
Intrinsic Value		Weighted
Average Grant
Date Fair Value
(In thousands)(Years)(In thousands)
Outstanding, January 1, 2021433 $61.95 6.9$14,697 
Granted— — $— 
Exercised(31)66.97 1,121 
Forfeited(6)83.33 
Outstanding, June 30, 2021396 $61.25 6.4$15,349 
Outstanding, January 1, 2022393 $61.18 5.9$4,737 
Granted— — $— 
Exercised— — — 
Forfeited(2)87.27 
Canceled(8)78.84 
Outstanding, June 30, 2022383 $60.69 5.4$1,729 
Exercisable, June 30, 2022333 $57.95 5.0$1,729 
Restricted Stock Units Award Activity
The following table summarizes restricted stock unit activity:
In thousands, except fair valueNumber of
Restricted Stock Units		Weighted
Average Grant
Date Fair Value		Aggregate
Intrinsic Value
Outstanding, January 1, 2021544 
Granted203 $98.94 
Released (1)
(194)$19,474 
Forfeited(33)
Outstanding, June 30, 2021520 
Outstanding, January 1, 2022430 $85.77 
Granted356 53.47 
Released (1)
(157)85.78 $8,430 
Forfeited(45)73.03 
Outstanding, June 30, 2022584 67.15 
Vested but not released, June 30, 202211 $567 
(1)     Shares released is presented as gross shares and does not reflect shares withheld by us for employee payroll tax obligations.
Restricted Stock Units, Valuation Assumptions The weighted average assumptions used to estimate the fair value of performance-based restricted stock units granted with a
service and market condition and the resulting weighted average fair value are as follows:
Six Months Ended June 30,
20222021
Expected volatility55.7 %50.5 %
Risk-free interest rate1.7 %0.2 %
Expected term (years)2.92.9
Weighted average fair value$57.88 $113.75