Condensed Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common stock.	Additional paid-in capital	Accumulated deficit	Total
Balance at Dec. 31, 2020	$ 1	$ 95,738	$ (54,394)	$ 41,345
Balance (shares) at Dec. 31, 2020	10,634,245
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of common stock and common stock warrants		26,404		26,404
Sale of common stock and common stock warrants, shares	1,000,000
Share-based compensation expense		1,074		1,074
Exercise of common stock warrants		906		906
Exercise of common stock warrants (shares)	146,017
Exercise of stock options		27		27
Exercise of stock options (shares)	32,530
Net loss			(9,139)	(9,139)
Balance at Jun. 30, 2021	$ 1	124,149	(63,533)	60,617
Balance (shares) at Jun. 30, 2021	11,812,792
Balance at Mar. 31, 2021	$ 1	96,174	(58,292)	37,883
Balance (shares) at Mar. 31, 2021	10,660,181
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of common stock and common stock warrants		26,404		26,404
Sale of common stock and common stock warrants, shares	1,000,000
Share-based compensation expense		749		749
Exercise of common stock warrants		801		801
Exercise of common stock warrants (shares)	134,351
Exercise of stock options		21		21
Exercise of stock options (shares)	18,260
Net loss			(5,241)	(5,241)
Balance at Jun. 30, 2021	$ 1	124,149	(63,533)	60,617
Balance (shares) at Jun. 30, 2021	11,812,792
Balance at Dec. 31, 2021	$ 1	127,289	(79,105)	48,185
Balance (shares) at Dec. 31, 2021	12,110,373
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense		2,637		2,637
Exercise of stock options		32		32
Exercise of stock options (shares)	17,012
Net loss			(20,577)	(20,577)
Balance at Jun. 30, 2022	$ 1	129,958	(99,682)	30,277
Balance (shares) at Jun. 30, 2022	12,127,385
Balance at Mar. 31, 2022	$ 1	128,631	(90,758)	37,874
Balance (shares) at Mar. 31, 2022	12,127,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense		1,327		1,327
Net loss			(8,924)	(8,924)
Balance at Jun. 30, 2022	$ 1	$ 129,958	$ (99,682)	$ 30,277
Balance (shares) at Jun. 30, 2022	12,127,385