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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract] |
Stock-Based Compensation Expense and Related Tax Benefit | Total stock-based compensation expense and the related tax benefit were as follows:
| Year Ended December 31,
In thousands | 2023 |  | 2022 |  | 2021
Stock options | $ | 103 |  |  | $ | 891 |  |  | $ | 1,371 |
Restricted stock units | 27,189 |  |  | 20,038 |  |  | 21,391 |
Unrestricted stock awards | 1,065 |  |  | 952 |  |  | 856 |
Phantom stock units | 5,025 |  |  | 1,315 |  |  | 3,242 |
Total stock-based compensation | $ | 33,382 |  |  | $ | 23,196 |  |  | $ | 26,860 |
Related tax benefit | $ | 6,928 |  |  | $ | 5,371 |  |  | $ | 4,991 |
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, 2021 | 433 |  |  | $ | 61.95 |  |  | 6.9 |  | $ | 14,697 |  |  |
Granted | — |  |  | — |  |  |  |  |  |  | $ | — |
Exercised | (34) |  |  | 67.21 |  |  |  |  | 1,215 |  |  |
Forfeited | (6) |  |  | 83.33 |  |  |  |  |  |  |
Outstanding, December 31, 2021 | 393 |  |  | $ | 61.18 |  |  | 5.9 |  | $ | 4,737 |  |  |
Granted | — |  |  | — |  |  |  |  |  |  | $ | — |
Exercised | (1) |  |  | 45.90 |  |  |  |  | 4 |  |  |
Forfeited | (2) |  |  | 87.27 |  |  |  |  |  |  |
Canceled | (9) |  |  | 80.00 |  |  |  |  |  |  |
Outstanding, December 31, 2022 | 381 |  |  | $ | 60.63 |  |  | 4.8 |  | $ | 1,892 |  |  |
Granted | — |  |  | — |  |  |  |  |  |  | $ | — |
Exercised | (18) |  |  | 45.96 |  |  |  |  | 397 |  |  |
Forfeited | — |  |  | — |  |  |  |  |  |  |
Canceled | — |  |  | — |  |  |  |  |  |  |
Outstanding and Exercisable, December 31, 2023 | 363 |  |  | $ | 61.36 |  |  | 4.0 |  | $ | 5,886 |  |  |
Restricted Stock Units Award Activity | The following table summarizes restricted stock unit activity:
| Number of Restricted Stock Units |  | Weighted Average Grant Date Fair Value |  | Aggregate Intrinsic Value
| In thousands |  |  |  | In thousands
Outstanding, January 1, 2021 | 544 |  |  | $ | 71.79 |  |  |
Granted | 230 |  |  | 97.66 |  |  |
Released (1) | (293) |  |  |  |  | $ | 20,639 |
Forfeited | (51) |  |  |  |  |
Outstanding, December 31, 2021 | 430 |  |  | $ | 85.77 |  |  |
Granted | 391 |  |  | 53.33 |  |  |
Released (1) | (227) |  |  |  |  | $ | 18,169 |
Forfeited | (66) |  |  |  |  |
Outstanding, December 31, 2022 | 528 |  |  | $ | 66.39 |  |  |
Granted | 497 |  |  | 56.89 |  |  |
Released (1) | (242) |  |  | 71.64 |  |  | $ | 13,974 |
Forfeited | (32) |  |  | 61.59 |  |  |
Outstanding, December 31, 2023 | 751 |  |  | $ | 58.89 |  |  |
Vested but not released, December 31, 2023 | 15 |  |  | $ | 75.51 |  |  | $ | 1,159 |
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:
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
Expected volatility | 46.0 | % |  | 55.7 | % |  | 54.2 | %
Risk-free interest rate | 4.6 | % |  | 1.7 | % |  | 0.4 | %
Expected term (years) | 1.9 |  | 2.9 |  | 1.9
Weighted average fair value | $ | 73.41 |  |  | $ | 57.88 |  |  | $ | 77.65 |
Schedule of Other Share-based Compensation, Activity | The following table summarizes phantom stock unit activity:
| Number of Phantom Stock Units |  | Weighted Average Grant Date Fair Value |  | Aggregate Intrinsic Value
| In thousands |  |  |  | In thousands
Outstanding, January 1, 2021 | 82 |  |  | $ | 73.13 |  |  |
Granted | 35 |  |  | 96.49 |  |  |
Released | (41) |  |  |  |  | $ | 4,100 |
Forfeited | (7) |  |  |  |  |
Outstanding, December 31, 2021 | 69 |  |  | $ | 85.47 |  |  |
Granted | 59 |  |  | 53.07 |  |  |
Released | (34) |  |  |  |  | $ | 1,780 |
Forfeited | (9) |  |  |  |  |
Outstanding, December 31, 2022 | 85 |  |  | $ | 66.46 |  |  |
Granted | 77 |  |  | 56.52 |  |  |
Released | (43) |  |  | 69.85 |  |  | $ | 2,511 |
Forfeited | (4) |  |  | 66.19 |  |  |
Outstanding, December 31, 2023 | 115 |  |  | $ | 58.58 |  |  |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of restricted stock units, including, but not limited to: (a) expected term of stock units, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of activity for outstanding award under share-based payment arrangement excluding share and unit options and nonvested award. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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