Stock-Based Compensation (Assumptions For PSU Awards) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	4.09%	2.47%	0.19%
Expected life	2 years 10 months 24 days	2 years 9 months 18 days	2 years 10 months 24 days
Expected volatility	91.80%	91.00%	82.20%
Expected dividends	$ 0	$ 0	$ 0
Forfeiture rate	0.00%	0.00%	0.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	4.27%
Expected life	6 years 9 months 18 days
Expected volatility	58.10%
Expected dividends	$ 0
Forfeiture rate	0.00%