Income Taxes - Additional disclosures (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Taxes
Deferred tax assets, valuation allowance	$ 720,000	$ 405,000
Tax credit carryforwards	10,800,000
Provision for income tax	0	0
Unrecognized tax benefits	0	0
Accrued interest or penalties	0	0
Federal
Income Taxes
Net operating loss carryforwards	$ 195,000,000	177,000,000
Income tax credit expiration description	Federal credits begin to expire in 2040 and will continue to expire through 2041. State credits begin to expire in 2023 and continue through 2034
State
Income Taxes
Net operating loss carryforwards	$ 196,000,000	$ 178,000,000
Income tax credit expiration description	begin to expire in 2040 and will continue to expire through 2042