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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Stock Option Activity | The number of stock options and weighted-average exercise prices as of December 31, 2021 and 2020 are as follows:
| 2021 |  | 2020
| Awards |  | Weighted-Average Exercise Price |  | Awards |  | Weighted-Average Exercise Price
(awards in thousands) |  |  |  |  |  |  |
Outstanding at beginning of period | 61 |  |  | $ | 48.19 |  |  | 97 |  |  | $ | 52.53 |
Exercised | (29) |  |  | 40.53 |  |  | (28) |  |  | 57.79 |
Forfeited | — |  |  | — |  |  | (8) |  |  | 68.45 |
Outstanding at end of the period | 32 |  |  | $ | 54.98 |  |  | 61 |  |  | $ | 48.19 |
Exercisable at end of the period | 23 |  |  | $ | 49.50 |  |  | 44 |  |  | $ | 39.98 |
Restricted Stock Activity | A summary of outstanding restricted stock activity as of December 31, 2021 and 2020 are as follows:
| 2021 |  | 2020
| Shares |  | Weighted-Average Grant Date Fair Value |  | Shares |  | Weighted-Average Grant Date Fair Value
(shares in thousands) |  |  |  |  |  |  |
Outstanding at beginning of period | 50 |  |  | $ | 116.06 |  |  | 46 |  |  | $ | 98.28 |
Granted | 22 |  |  | 264.58 |  |  | 43 |  |  | 113.87 |
Vested | (26) |  |  | 116.68 |  |  | (32) |  |  | 88.71 |
Forfeited | (3) |  |  | 169.47 |  |  | (7) |  |  | 108.86 |
Outstanding at end of the period | 43 |  |  | $ | 183.51 |  |  | 50 |  |  | $ | 116.06 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award | The total expenses during the years ended December 31, 2021, 2020 and 2019 are as follows (in thousands):
| 2021 |  | 2020 |  | 2019
| Shares |  | Share-Based Compensation Expense |  | Shares |  | Share-Based Compensation Expense |  | Shares |  | Share-Based Compensation Expense
Options and restricted stock | 75 |  |  | $ | 4,302 |  |  | 111 |  |  | $ | 3,493 |  |  | 143 |  |  | $ | 3,817 |
Performance-based share awards granted in 2021 | 15 |  |  | 1,986 |  |  | — |  |  | — |  |  | — |  |  | — |
Performance-based share awards granted in 2020 | 26 |  |  | 1,807 |  |  | 28 |  |  | 1,662 |  |  | — |  |  | — |
Performance-based share awards granted in 2019 | — |  |  | 1,808 |  |  | 17 |  |  | 1,641 |  |  | 18 |  |  | 703 |
Total share-based compensation | 116 |  |  | $ | 9,903 |  |  | 156 |  |  | $ | 6,796 |  |  | 161 |  |  | $ | 4,520 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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 (c)(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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