Income Taxes (Tax Credit Carryforwards) (Details) - Federal [Member] $ in Millions	Dec. 31, 2022 USD ($)
Tax Credit Carryforward [Line Items]
Operating Loss Carryforwards, After Tax Effects	$ 11.0
Research and Development Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforwards, After Tax Effects, Amount	$ 16.8