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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-Based Compensation Expense | Stock-based compensation expense is summarized as follows:
| Years Ended December 31,
(in thousands) | 2021 |  | 2020 |  | 2019
Stock-based compensation expense | $ | 26,225 |  |  | $ | 21,481 |  |  | $ | 22,232 |
Schedule of Restricted Stock Units Activity | RSU activity, inclusive of PSUs, for the year ended December 31, 2021 is summarized as follows:
| Number of shares |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2020 | 533,185 |  |  | $ | 106.19 |
Granted | 107,367 |  |  | $ | 268.65 |
Forfeited | (24,699) |  |  | $ | 129.96 |
Settled | (185,123) |  |  | $ | 123.19 |
Outstanding at December 31, 2021 | 430,730 |  |  | $ | 138.01 |
Schedule of Grant-date Intrinsic Value of RSUs Granted |
| Years Ended December 31,
(in millions, except per share values) | 2021 |  | 2020 |  | 2019
Weighted-average grant-date fair value per share | $ | 268.65 |  |  | $ | 86.73 |  |  | $ | 108.42 |
Fair value of RSUs vested | $ | 22.8 |  |  | $ | 21.8 |  |  | $ | 17.8 |
Schedule of Stock Option Activity | Stock option activity for the year ended December 31, 2021 is summarized as follows:
| Number of shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2020 | 1,193 |  |  | $ | 55.18 |
Exercised | (1,193) |  |  | $ | 55.18 |
Outstanding at December 31, 2021 | — |  |  | $ | — |
Vested and exercisable at December 31, 2021 | — |  |  | $ | — |

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- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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