Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income taxes
Income tax expense	$ 0.0	$ 0.0
Valuation allowance increase due to increase in the deferred tax assets	0.7	5.8
Uncertain tax positions	0.1	0.1
Costs deemed direct or incidental to research and development capitalized	10.0	$ 7.8
Foreign
Income taxes
Operating loss carryforwards	110.7
Federal
Income taxes
Operating loss carryforwards	68.3
State
Income taxes
Operating loss carryforwards	$ 73.1