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Net Loss per Share (Antidilutive Shares Excluded from Computation of Diluted Shares Outstanding) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jan. 10, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted shares outstanding	17,063,518	39,644,802	42,357,378	39,644,802
Innoviva Strategic Opportunities LLC
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate (as a percent)					8.00%
Innoviva Strategic Opportunities LLC \| Secured term loan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Convertible loan principal amount	$ 30.0		$ 30.0
Accrued and unpaid interest	$ 8.4		$ 8.4
Interest rate (as a percent)	8.00%		8.00%
Price per share	$ 1.52		$ 1.52		$ 1.52
Outstanding stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted shares outstanding	6,273,471	5,094,273	6,273,471	5,094,273
Unvested restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted shares outstanding	135,000	202,500	135,000	202,500
Shares issuable upon the conversion of the Convertible Loan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted shares outstanding		23,692,982	25,293,860	23,692,982
Outstanding warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted shares outstanding	10,655,047	10,655,047	10,655,047	10,655,047