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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of Non-Vested Restricted Stock Activity | The following table summarizes the non-vested restricted stock activity for the year ended December 31, 2021:
|  |  |  | Time-Based |  |  |  |  |  | Performance-Based |
|  |  |  | Restricted Stock |  |  |  |  |  | Restricted Stock |
|  |  |  | Weighted |  |  |  |  |  | Weighted |
| Time-Based |  |  | Average |  |  | Performance-Based |  |  | Average |
| Restricted Stock |  |  | Grant Date |  |  | Restricted Stock |  |  | Grant Date |
| Shares |  |  | Fair Value |  |  | Shares |  |  | Fair Value |
Non-vested January 1, 2021 |  | 792,483 |  |  | $ | 46.01 |  |  |  | 129,478 |  |  | $ | 45.64 |
Granted |  | 534,580 |  |  | $ | 66.02 |  |  |  | 117,608 |  |  | $ | 50.60 |
Vested |  | (303,995 | ) |  | $ | 44.08 |  |  |  | (76,000 | ) |  | $ | 37.20 |
Forfeited |  | (117,701 | ) |  | $ | 48.48 |  |  |  | (42,132 | ) |  | $ | 47.77 |
Non-vested at December 31, 2021 |  | 905,367 |  |  | $ | 59.00 |  |  |  | 128,954 |  |  | $ | 54.45 |
Schedule of Restricted Stock Granted | The following table summarizes the restricted stock granted during the respective years:
Time-based restricted stock grants | 2021 |  |  | 2020 |  |  | 2019 |
Employees |  | 510,017 |  |  |  | 312,855 |  |  |  | 355,579 |
Outside directors |  | 24,563 |  |  |  | 26,341 |  |  |  | 32,262 |
Total |  | 534,580 |  |  |  | 339,196 |  |  |  | 387,841 |
Weighted average grant date fair value | $ | 66.02 |  |  | $ | 52.07 |  |  | $ | 38.02 |
Vesting period | 1-5 years |  |  | 1-5 years |  |  | 1-5 years |

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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 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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