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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Valuation Assumptions, Options | The fair value of unvested cash settled stock appreciation rights as of September 30, 2021 was estimated using the Black-Scholes option valuation model with the following assumptions:
|  |  |  |  |  |  |  | Expected |  | Risk Free |  |  |
|  |  |  |  |  | Expected |  | Dividend |  | Interest |  | Fair Value |
Grant Year |  | Grant Date |  | Expected Life |  | Volatility |  | Yield |  | Rate |  | Per Award |
2020 |  | 1/24/2020 |  | 4.6 years |  | 79.96% |  | 0.00% |  | 0.88% |  | $ | 3.56 |
2020 |  | 9/14/2020 |  | 5.2 years |  | 76.49% |  | 0.00% |  | 1.00% |  | $ | 3.45 |
2020 |  | 11/30/2020 |  | 5.2 years |  | 76.73% |  | 0.00% |  | 1.00% |  | $ | 3.29 |
2021 |  | 1/5/2021 |  | 5.3 years |  | 76.22% |  | 0.00% |  | 1.01% |  | $ | 3.35 |

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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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- References No definition available. + Details
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