Amount of accumulated undistributed earnings (deficit).

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Name:	us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Liquidity and Going Concern (Narrative) (Details) - USD ($) $ in Thousands	Mar. 04, 2024	Dec. 31, 2023	Jul. 10, 2023	Jan. 10, 2023	Dec. 31, 2022
Accumulated deficit		$ (308,819)			$ (239,774)
Cash and cash equivalents		$ 13,523			$ 14,852
Innoviva Strategic Opportunities LLC [Member] \| Secured term loan
Aggregate amount			$ 25,000	$ 30,000
Interest rate (as a percent)		27.31%	14.00%	8.00%
Innoviva Strategic Opportunities LLC [Member] \| Credit And Security Agreement [Member]
Aggregate amount			$ 25,000
Interest rate (as a percent)			14.00%
Innoviva Strategic Opportunities LLC [Member] \| Credit And Security Agreement [Member] \| Subsequent Event [Member]
Aggregate amount	$ 35,000
Interest rate (as a percent)	14.00%