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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 61,758,000		$ 61,758,000		$ 54,192,000
Tangible asset impairment charges	$ 0	$ 0	$ 0	$ 0
Pre-Funded Warrants
Cash and Cash Equivalents [Line Items]
Class of warrant or right, outstanding (in shares)	81,432,635		81,432,635		40,511,011	3,100,823
Operating Account
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 3,800,000		$ 3,800,000		$ 1,900,000
Money market fund
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	28,000,000.0		28,000,000.0		$ 52,300,000
U.S. government securities
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 30,000,000.0		$ 30,000,000.0