Income Taxes - Provision for Income Taxes Differs from Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal tax benefit at statutory rate	$ (10,777,000)	$ (13,593,000)
State tax benefit at statutory rate, net of federal tax benefit	(3,892,000)	(4,917,000)
Change in valuation allowance	16,289,000	20,047,000
Research and development tax credits	(1,980,000)	(2,030,000)
Other	360,000	493,000
Provision for income taxes	$ 0	$ 0