Risks, Liquidity, and Going Concern (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 05, 2021	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Risks, Liquidity, and Going Concern
Accumulated deficit		$ (720,137)		$ (720,137)		$ (704,757)
Net losses		7,821	$ 9,385	15,380	$ 24,790
Cash and cash equivalents		24,155		24,155		$ 46,303
ATM Facility
Risks, Liquidity, and Going Concern
Remaining capacity available to be sold		$ 15,800		$ 15,800
ATM Facility | Maximum
Risks, Liquidity, and Going Concern
Sale of common stock, net of issuance costs	$ 125,000