Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2021		60,879,496
Beginning balance at Dec. 31, 2021	$ (196,944)	$ 61	$ 964,401	$ (1,106,377)	$ (54,998)	$ (31)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock from ATM Program, net of issuance costs (in shares)		13,043,797
Issuance of common stock from ATM Program, net of issuance costs	90,848	$ 13	90,835
Vesting of restricted stock units (in shares)		440,697
Vesting of restricted stock units	1	$ 1
Vesting of ESPP Shares (in shares)		206,208
Vesting of ESPP Shares	732		732
Stock-based compensation	15,215		15,215
Other comprehensive gain (loss)	29					29
Net loss	(233,659)			(233,659)
Ending balance (in shares) at Dec. 31, 2022		74,570,198
Ending balance at Dec. 31, 2022	(323,778)	$ 75	1,071,183	(1,340,036)	(54,998)	(2)
Increase (Decrease) in Stockholders' Equity
Issuance of common stock and warrants from offering, net of issuance costs (in shares)		12,205,000
Issuance of common stock and warrants from offering, net of issuance costs	52,428	$ 12	52,416
Issuance of common stock from ATM Program, net of issuance costs (in shares)		3,312,908
Issuance of common stock from ATM Program, net of issuance costs	4,448	$ 3	4,445
Vesting of restricted stock units (in shares)		1,034,631
Vesting of restricted stock units	1	$ 1
Vesting of ESPP Shares (in shares)		271,084
Vesting of ESPP Shares	740		740
Stock-based compensation	11,958		11,958
Exercise of pre-funded warrants (in shares)		20,965,747
Exercise of pre-funded warrants	21	$ 21
Exercise of warrants (in shares)		5,850,747
Exercise of warrants	8,434	$ 6	8,428
Other comprehensive gain (loss)	2					2
Net loss	(209,248)			(209,248)
Ending balance (in shares) at Dec. 31, 2023		118,210,315
Ending balance at Dec. 31, 2023	$ (454,994)	$ 118	$ 1,149,170	$ (1,549,284)	$ (54,998)	$ 0