CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock Public Offering	Common Stock At The Market Offering	Common Stock	Additional Paid-in Capital Public Offering	Additional Paid-in Capital At The Market Offering	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Public Offering	At The Market Offering	Total
Balance at beginning of period at Dec. 31, 2020						$ 542,286	$ (94)	$ (504,542)			$ 37,650
Balance at beginning of period (in shares) at Dec. 31, 2020			45,109,314
Increase (Decrease) in Stockholders' Equity
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units						1,574					1,574
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units (in shares)			1,714,269
Issuance of common stock in connection with public offerings, net of offering costs	$ 1			$ 238,199					$ 238,200
Issuance of common stock in connection with public offerings, net of offering costs, shares	14,404,863
Unrealized gain (loss) on marketable securities							(229)				(229)
Foreign currency translation adjustment							99				99
Stock-based compensation expense						14,060					14,060
Net loss								(90,865)			(90,865)
Balance at end of period at Dec. 31, 2021			$ 1			792,971	(224)	(595,407)			197,341
Balance at end of period (in shares) at Dec. 31, 2021			61,228,446
Increase (Decrease) in Stockholders' Equity
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units						(163)					(163)
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units (in shares)			621,492
Issuance of common stock in connection with public offerings, net of offering costs					$ 72,659					$ 72,659
Issuance of common stock in connection with public offerings, net of offering costs, shares		4,838,709
Unrealized gain (loss) on marketable securities							(673)				(673)
Stock-based compensation expense						15,039					15,039
Net loss								(86,908)			(86,908)
Balance at end of period at Dec. 31, 2022			$ 1			880,832	(897)	(682,315)			$ 197,621
Balance at end of period (in shares) at Dec. 31, 2022			66,688,647								66,688,647
Increase (Decrease) in Stockholders' Equity
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units						8					$ 8
Issuance of common stock in connection with exercise of stock options and warrants and vesting of restricted stock units (in shares)			806,242
Issuance of common stock in connection with public offerings, net of offering costs					$ 26,714					$ 26,714
Issuance of common stock in connection with public offerings, net of offering costs, shares		3,400,000
Unrealized gain (loss) on marketable securities							791				791
Stock-based compensation expense						20,542					20,542
Net loss								(88,481)			(88,481)
Balance at end of period at Dec. 31, 2023			$ 1			$ 928,080	$ (106)	$ (770,796)			$ 157,179
Balance at end of period (in shares) at Dec. 31, 2023			70,894,889								70,894,889