Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2025
Operating Loss Carryforwards [Line Items]
Income taxes paid	$ 0.0	$ 0.0
Income tax refund	$ 0.0	0.0
Increase in valuation allowance		44.1
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		46.6
Federal | Research and Development Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		1.9
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		37.5
State | Research and Development Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		$ 0.8