Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2021	$ 41,258	$ 32	$ 400,705	$ (359,479)
Beginning balance (in shares) at Dec. 31, 2021		28,705,334
Net income (loss)	(62,809)			(62,809)
Stock-based compensation expense	3,685		3,685
Common stock issued through employee stock purchase and stock option plans	18		18
Common stock issued through employee stock purchase and stock option plans (in shares)		6,834
Common stock issued, net of expenses	21,010	$ 4	21,006
Common stock issued, net of expenses (in shares)		3,895,943
Common stock issued for vested restricted stock units (in shares)		74,231
Vested Loan Agreement warrants	71		71
Ending balance at Dec. 31, 2022	$ 3,233	$ 36	425,485	(422,288)
Ending balance (in shares) at Dec. 31, 2022	32,682,342	32,682,342
Net income (loss)	$ 67,041			67,041
Stock-based compensation expense	2,624		2,624
Common stock issued through employee stock purchase and stock option plans	42		42
Common stock issued through employee stock purchase and stock option plans (in shares)		28,896
Common stock issued, net of expenses	4	$ 4
Common stock issued, net of expenses (in shares)		4,150,400
Common stock issued for vested restricted stock units	18		18
Common stock issued for vested restricted stock units (in shares)		346,161
Ending balance at Dec. 31, 2023	$ 72,962	$ 40	$ 428,169	$ (355,247)
Ending balance (in shares) at Dec. 31, 2023	37,207,799	37,207,799