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Share-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Nonvested Share Activity [Table Text Block] | The following represents a summary of the non-vested shares for the three years ended December 31, 2021 (in thousands):
|  | Restricted Stock |  | Restricted Stock Units
|  | Shares |  | Weighted Average Grant Date Fair Value |  | Units |  | Weighted Average Grant Date Fair Value
Non-vested at January 1, 2019 |  | 527,607 |  |  |  |  | — |  |  |
Granted |  | 145,724 |  |  | $ | 76.74 |  |  | 46,689 |  |  | $ | 87.40 |
Vested |  | (114,201) |  |  | 61.28 |  |  | — |  |  | — |
Forfeited |  | (131,952) |  |  | 83.69 |  |  | — |  |  | — |
Non-vested at December 31, 2019 |  | 427,178 |  |  |  |  | 46,689 |  |  |
Granted |  | 236,750 |  |  | $ | 83.49 |  |  | 22,980 |  |  | $ | 77.36 |
Vested |  | (225,527) |  |  | 83.50 |  |  | — |  |  | — |
Forfeited |  | (18,167) |  |  | 83.10 |  |  | — |  |  | — |
Non-vested at December 31, 2020 |  | 420,234 |  |  |  |  | 69,669 |  |  |
Granted |  | 247,917 |  |  | $ | 73.01 |  |  | 17,570 |  |  | $ | 88.25 |
Vested |  | (166,965) |  |  | 94.96 |  |  | — |  |  | — |
Forfeited |  | (11,632) |  |  | 75.83 |  |  | — |  |  | — |
Non-vested at December 31, 2021 |  | 489,554 |  |  |  |  | 87,239 |  |  |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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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