Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

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 thousands	2023		2022		2023		2022
Stock options	$	20	$	278	$	80	$	562
Restricted stock units	6,516		5,869		13,099		11,453
Unrestricted stock awards	239		258		515		517
Phantom stock units	1,147		582		1,924		772
Total stock-based compensation	$	7,922	$	6,987	$	15,618	$	13,304
Related tax benefit	$	1,670	$	1,434	$	3,373	$	2,803

Employee Stock Options Activity

A summary of our stock option activity is as follows:

	Shares	Weighted 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, 2022	393	$	61.18	5.9	$	4,737
Granted	—	—					$	—
Exercised	—	—			—
Forfeited	(2)	87.27
Canceled	(8)	78.84
Outstanding, June 30, 2022	383	$	60.69	5.4	$	1,729
Outstanding, January 1, 2023	381	$	60.63	4.8	$	1,892
Granted	—	—					$	—
Exercised	(5)	55.49			73
Forfeited	—	—
Canceled	—	—
Outstanding, June 30, 2023	376	$	60.70	4.4	$	5,494
Exercisable, June 30, 2023	373	$	60.66	4.4	$	5,456

Restricted Stock Units Award Activity

The following table summarizes restricted stock unit activity:

In thousands, except fair value	Number of Restricted Stock Units	Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding, January 1, 2022	430
Granted	356	$	53.47
Released (1)	(157)			$	8,430
Forfeited	(45)
Outstanding, June 30, 2022	584
Outstanding, January 1, 2023	528	$	66.39
Granted	442	56.37
Released (1)	(222)	72.56		$	1,236
Forfeited	(19)	63.89
Outstanding, June 30, 2023	729	58.70
Vested but not released, June 30, 2023	14			$	1,001

(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,
	2023			2022
Expected volatility	50.0		%	55.7		%
Risk-free interest rate	4.6		%	1.7		%
Expected term (years)	2.2			2.9
Weighted average fair value	$	59.52		$	57.88