Income Taxes (Reconciliation of Taxes at the Federal Statutory Rate) (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Abstract]
Tax at federal statutory rate	21.00%	21.00%
Permanent differences	(4.20%)	(4.30%)
Research and development ("R&D") tax credit	0.80%	1.40%
Uncertain tax position	(0.10%)	(0.30%)
State, net of federal benefit	2.00%	2.60%
Deferred rate change	(0.30%)	0.40%
Change in valuation allowance	(19.30%)	(21.20%)
Total	(0.10%)	(0.40%)