Stock-Based Compensation (Valuation Assumptions) (Details) - Stock Appreciation Rights (SARs) [Member]	12 Months Ended
	Dec. 31, 2023 $ / 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	3 years 4 months 24 days
Expected Volatility	94.06%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	3.66%
Fair Value Per Award	$ 2
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 1 month 6 days
Expected Volatility	89.29%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	3.54%
Fair Value Per Award	$ 1.85
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 2 months 12 days
Expected Volatility	88.36%
Expected Dividend Yield	0.00%
Risk Free Interest Rate	3.52%
Fair Value Per Award	$ 1.89