Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock, Common	Additional Paid-In Capital	Accumulated Other Comprehensive Income / (Loss)	Accumulated Deficit
Beginning Balance at Dec. 31, 2022	$ 489,686	$ 791	$ (47)	$ 1,203,074	$ (357)	$ (713,775)
Beginning Balance (in shares) at Dec. 31, 2022		79,123,312
Issuance of common stock pursuant to exercise of stock options	1,114	$ 1		1,113
Issuance of common stock pursuant to exercise of stock options (in shares)		88,429
Issuance of common stock pursuant to vesting of restricted stock units		$ 1		(1)
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		126,060
Issuance of common stock pursuant to exercise of warrants	7	$ 1		6
Issuance of common stock pursuant to exercise of warrant (in shares)		126,093
Issuance of common stock pursuant to the at-the-market offering program, net of issuance costs	17,222	$ 10		17,212
Issuance of common stock pursuant to the at-the-market offering program, net of issuance costs (in shares)		948,300
Unrealized comprehensive gain (loss) on investments	267				267
Stock-based compensation	8,915			8,915
Net loss	(58,335)					(58,335)
Ending Balance at Mar. 31, 2023	458,876	$ 804	$ (47)	1,230,319	(90)	(772,110)
Ending Balance (in shares) at Mar. 31, 2023		80,412,194
Beginning Balance at Dec. 31, 2023	492,574	$ 903		1,450,722	319	(959,370)
Beginning Balance (in shares) at Dec. 31, 2023		90,282,267
Issuance of common stock pursuant to exercise of stock options	1,184			1,184
Issuance of common stock pursuant to exercise of stock options (in shares)		73,745
Issuance of common stock pursuant to vesting of restricted stock units		$ 3		(3)
Issuance of common stock pursuant to vesting of restricted stock units (in shares)		290,578
Unrealized comprehensive gain (loss) on investments	(454)				(454)
Stock-based compensation	10,252			10,252
Net loss	(62,054)					(62,054)
Ending Balance at Mar. 31, 2024	$ 441,502	$ 906		$ 1,462,155	$ (135)	$ (1,021,424)
Ending Balance (in shares) at Mar. 31, 2024		90,646,590