Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards, Not Subject to Expiration	$ 140.8
Valuation allowance	9.1
Unrecognized tax benefits	0.0	$ 0.0
Accrued interest or penalties	0.0	$ 0.0
Domestic Tax Jurisdiction
Operating Loss Carryforwards	195.3
State Tax Jurisdiction
Operating Loss Carryforwards	139.2
Foreign Tax Jurisdiction
Operating Loss Carryforwards	$ 12.0