Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Public Offering [Member]	Common Stock [Member]	Common Stock [Member] Public Offering [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Public Offering [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2020	$ 127,199		$ 25		$ 253,943		$ (126,769)
Beginning balance (Shares) at Dec. 31, 2020			24,786,324
Issuance of common stock upon public offering, net of issuance costs of $798		$ 55,605		$ 3		$ 55,602
Issuance of common stock upon public offering, net of issuance costs of $798 (Shares)				3,000,000
Issuance of common stock upon exercise of stock options	299				299
Issuance of common stock upon exercise of stock options (Shares)			94,787
Stock-based compensation expense	1,581				1,581
Net loss	(15,399)						(15,399)
Ending balance at Mar. 31, 2021	169,285		$ 28		311,425		(142,168)
Ending balance (Shares) at Mar. 31, 2021			27,881,111
Beginning balance at Dec. 31, 2021	123,976		$ 28		319,458		(195,510)
Beginning balance (Shares) at Dec. 31, 2021			28,133,368
Issuance of common stock upon exercise of stock options	$ 29				29
Issuance of common stock upon exercise of stock options (Shares)	14,757		14,757
Stock-based compensation expense	$ 1,947				1,947
Net loss	(21,038)						(21,038)
Ending balance at Mar. 31, 2022	$ 104,914		$ 28		$ 321,434		$ (216,548)
Ending balance (Shares) at Mar. 31, 2022			28,148,125