Share-Based Compensation And Share Repurchase Plans (Summary Of Vested And Unvested Stock Options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining years of contractual life, Vested	8 years 4 months 20 days	8 years 11 months 8 days	6 months 21 days
Weighted average remaining years of contractual life, Nonvested	6 years 6 months 7 days	9 years 5 months 8 days	1 year 9 months 14 days
Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested	1,915,069	207,657	205,122
Weighted average exercise price, Vested	$ 1.64	$ 0.48	$ 15.92
Unvested	2,189,051	1,499,755	207,657
Weighted average exercise price, Nonvested	$ 1.43	$ 1.62	$ 4.54