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Long-term Incentive Compensation and Shareholders’ Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Summary of Status of Awards Under Stock-Based Compensation Plans and Agreements | A combined summary of the status of the Company’s stock-settled awards under both the 2020 Plan and 2011 Plan, including base shares for stock-settled stock appreciation rights (SSARs) and stock-settled stock unit awards is as follows:
| Year ended December 31, 2021
| Stock appreciation rights |  | Stock units
| Awards |  | Weighted average exercise price |  | Weighted average remaining contractual life |  | Awards |  | Weighted average remaining contractual life
Outstanding at beginning of year | 8,084 |  |  | $ | 63.64 |  |  |  |  | 3,537 |  |  |
Granted | 132 |  |  | $ | 108.93 |  |  |  |  | 789 |  |  |
Added by performance factor |  |  |  |  |  |  | 153 |  |  |
Exercised/Vested | (2,093) |  |  | $ | 64.00 |  |  |  |  | (696) |  |  |
Canceled | (180) |  |  | $ | 59.19 |  |  |  |  | (398) |  |  |
Outstanding at end of period | 5,943 |  |  | $ | 64.66 |  |  | 2.4 |  | 3,385 |  |  | 1.4
Exercisable at end of period | 1,161 |  |  | $ | 61.13 |  |  | 1.5 |  | — |  |  | — |
Weighted-average fair value of grants: |  |  |  |  |  |  |  |  |
2021 | $ | 32.15 |  |  |  |  |  |  | $ | 109.50 |  |  |
2020 | $ | 26.70 |  |  |  |  |  |  | $ | 77.83 |  |  |
2019 | $ | 14.04 |  |  |  |  |  |  | $ | 50.58 |  |  |
Summary of Range of Exercise Prices |
|  | Awards Outstanding |  | Weighted average exercise price |  | Awards exercisable |  | Weighted average exercise price
Range of SSARs base prices |
$50.01–$60.00 |  | 1,561 |  |  | $ | 52.45 |  |  | 425 |  |  | $ | 52.55 |
$60.01–$70.00 |  | 3,974 |  |  | $ | 67.22 |  |  | 732 |  |  | $ | 66.05 |
$70.01–$80.00 |  | 276 |  |  | $ | 75.77 |  |  | 4 |  |  | $ | 71.64 |
$100.01–$110.00 |  | 132 |  |  | $ | 108.93 |  |  | — |  |  | $ | — |
Total |  | 5,943 |  |  | $ | 64.66 |  |  | 1,161 |  |  | $ | 61.13 |
Summary of Weighted Average Valuation Inputs | A summary of the weighted average valuation inputs described above used for estimating the grant-date fair value of SSAR awards granted in the periods indicated is as follows:
| Year ended December 31,
| 2021 |  | 2020 |  | 2019
Expected term | 4.5 |  | 4.8 |  | 4.0
Expected volatility | 34.3 | % |  | 28.2 | % |  | 29.5 | %
Expected dividend yield | — | % |  | — | % |  | — | %
Risk-free interest rate | 0.7 | % |  | 1.5 | % |  | 2.2 | %

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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