Stock-Based Compensation (Valuation Assumptions) (Details) - Stock Appreciation Rights (SARs) [Member]	6 Months Ended
Jun. 30, 2022 $ / 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 1 month 6 days
Expected Volatility	89.91%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	2.98%
Fair Value Per Award	$ 2.85
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	4 years 6 months
Expected Volatility	86.68%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	2.99%
Fair Value Per Award	$ 2.75
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	4 years 8 months 12 days
Expected Volatility	85.24%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	3.00%
Fair Value Per Award	$ 2.64
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	4 years 9 months 18 days
Expected Volatility	84.45%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	3.00%
Fair Value Per Award	$ 2.69

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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Fair Value Per Award

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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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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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.

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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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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