Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Pain In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2020	$ 109,827	$ 2	$ 216,126	$ (106,325)	$ 24
Balance, shares at Dec. 31, 2020		19,677,249
Issuance of common stock upon exercise of stock options	976		976
Issuance of common stock upon exercise of stock options, shares		393,991
Issuance of common stock related to financing	143,754	$ 1	143,753
Issuance of common stock related to financing, shares		11,729,353
Exercise of warrant, shares		1,806
Stock-based compensation expense	3,043		3,043
Net loss	(21,319)			(21,319)
Other comprehensive loss	(22)				(22)
Balance at Mar. 31, 2021	236,259	$ 3	363,898	(127,644)	$ 2
Balance, shares at Mar. 31, 2021		31,802,399
Balance at Dec. 31, 2021	303,129	$ 4	471,449	(168,324)
Balance, shares at Dec. 31, 2021		39,736,914
Issuance of common stock upon exercise of stock options	$ 93		93
Issuance of common stock upon exercise of stock options, shares	10,099	10,099
Issuance of common stock upon vesting of restricted stock, shares		224,000
Stock-based compensation expense	$ 4,350		4,350
Net loss	4,618			4,618
Shares withheld for taxes, shares		(85,197)
Shares withheld for taxes	1,106		(1,106)
Balance at Mar. 31, 2022	$ 311,084	$ 4	$ 474,786	$ (163,706)
Balance, shares at Mar. 31, 2022		39,885,816