Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	ATM Agreement	Common Stock	Common Stock ATM Agreement	Additional Paid-in Capital	Additional Paid-in Capital ATM Agreement	Accumulated Other Comprehensive Income/(Loss)	Accumulated Deficit
Balance at Dec. 31, 2020	$ 140,978		$ 46		$ 267,093		$ (137)	$ (126,024)
Balance, shares at Dec. 31, 2020			46,359,743
Issuance of common stock net of offering costs		$ 10,673		$ 2		$ 10,671
Issuance of common stock net of offering costs, shares				1,705,800
Issuance of common stock under employee stock incentive plans	48				48
Issuance of common stock under employee stock incentive plans, shares			14,325
Vesting related to shares of common stock issued pursuant to early exercises	7				7
Stock-based compensation expense	1,928				1,928
Other comprehensive (loss) income	(3)						(3)
Net loss	(12,994)							(12,994)
Balance at Mar. 31, 2021	140,637		$ 48		279,747		(140)	(139,018)
Balance, shares at Mar. 31, 2021			48,079,868
Balance at Dec. 31, 2021	196,876		$ 56		377,765		(291)	(180,654)
Balance, shares at Dec. 31, 2021			56,259,747
Issuance of common stock net of offering costs		$ 48,642		$ 4		$ 48,638
Issuance of common stock net of offering costs, shares				3,245,738
Issuance of common stock under employee stock incentive plans	208				208
Issuance of common stock under employee stock incentive plans, shares			59,174
Stock-based compensation expense	3,104				3,104
Other comprehensive (loss) income	(491)						(491)
Net loss	(16,024)							(16,024)
Balance at Mar. 31, 2022	$ 232,315		$ 60		$ 429,715		$ (782)	$ (196,678)
Balance, shares at Mar. 31, 2022			59,564,659