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Stock-Based Compensation (Valuation Assumptions) (Details) - Stock Appreciation Rights (SARs) [Member] | 9 Months Ended
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Sep. 30, 2021 $ / shares
1/24/2020 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Grant Year | 2020
Grant Date | Jan. 24, 2020
Expected Life | 4 years 7 months 6 days
Expected Volatility | 79.96%
Expected Dividend Yield | 0.00%
Risk Free Interest Rate | 0.88%
Fair Value Per Award | $ 3.56
9/14/2020 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Grant Year | 2020
Grant Date | Sep. 14, 2020
Expected Life | 5 years 2 months 12 days
Expected Volatility | 76.49%
Expected Dividend Yield | 0.00%
Risk Free Interest Rate | 1.00%
Fair Value Per Award | $ 3.45
11/30/2020 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Grant Year | 2020
Grant Date | Nov. 30, 2020
Expected Life | 5 years 2 months 12 days
Expected Volatility | 76.73%
Expected Dividend Yield | 0.00%
Risk Free Interest Rate | 1.00%
Fair Value Per Award | $ 3.29
1/5/2021 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Grant Year | 2021
Grant Date | Jan. 05, 2021
Expected Life | 5 years 3 months 18 days
Expected Volatility | 76.22%
Expected Dividend Yield | 0.00%
Risk Free Interest Rate | 1.01%
Fair Value Per Award | $ 3.35

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Fair Value Per Award + References No definition available. + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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)(i) -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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 + Details
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