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Liquidity and Going Concern (Narrative) (Details) - USD ($) $ in Thousands | Aug. 11, 2025 | Sep. 30, 2025 | Mar. 12, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Mar. 04, 2024 | Jan. 10, 2023
--- | --- | --- | --- | --- | --- | --- | ---
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Accumulated deficit |  | $ (377,236) |  | $ (327,735) |  |  |
Cash and cash equivalents |  | $ 14,756 |  | $ 9,291 | $ 17,141 |  |
Innoviva Strategic Opportunities LLC | Credit And Security Agreement |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Aggregate amount |  |  |  |  |  | $ 35,000 |
Interest rate (as a percent) |  |  |  |  |  | 14.00% |
Innoviva Strategic Opportunities LLC | Secured term loan |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Aggregate amount |  |  |  |  |  |  | $ 30,000
Interest rate (as a percent) |  | 8.00% |  |  |  |  | 8.00%
March 2025 Credit Agreement | Innoviva Strategic Opportunities LLC | Secured term loan |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Aggregate amount |  |  | $ 10,000 |  |  |  |
Interest rate (as a percent) |  |  | 14.00% |  |  |  |
August 2025 Loan | Innoviva Strategic Opportunities LLC |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Aggregate amount | $ 15,000 |  |  |  |  |  |
Interest rate (as a percent) | 14.00% |  |  |  |  |  |
Loan maturity date | Jan. 11, 2029 |  |  |  |  |  |
August 2025 Loan | Innoviva Strategic Opportunities LLC | Secured term loan |  |  |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |  |  |
Aggregate amount | $ 15,000 |  |  |  |  |  |
Interest rate (as a percent) | 14.00% |  |  |  |  |  |

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