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		26,666		26,666
Sale of common stock and common stock warrants, shares	1,014,115
Share-based compensation expense		2,229		2,229
Exercise of common stock warrants		1,338		1,338
Exercise of common stock warrants (shares)	193,975
Exercise of stock options		74		74
Exercise of stock options (shares)	250,998
Net loss			(16,859)	(16,859)
Balance at Sep. 30, 2021	$ 1	126,045	(71,253)	54,793
Balance (shares) at Sep. 30, 2021	12,093,333
Balance at Jun. 30, 2021	$ 1	124,149	(63,533)	60,617
Balance (shares) at Jun. 30, 2021	11,812,792
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of common stock and common stock warrants		262		262
Sale of common stock and common stock warrants, shares	14,115
Share-based compensation expense		1,155		1,155
Exercise of common stock warrants		432		432
Exercise of common stock warrants (shares)	47,958
Exercise of stock options		47		47
Exercise of stock options (shares)	218,468
Net loss			(7,720)	(7,720)
Balance at Sep. 30, 2021	$ 1	126,045	(71,253)	54,793
Balance (shares) at Sep. 30, 2021	12,093,333
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		3,977		3,977
Exercise of stock options		32		$ 32
Exercise of stock options (shares)	17,221			17,221
Net loss			(29,110)	$ (29,110)
Balance at Sep. 30, 2022	$ 1	131,298	(108,215)	23,084
Balance (shares) at Sep. 30, 2022	12,127,594
Balance at Jun. 30, 2022	$ 1	129,958	(99,682)	30,277
Balance (shares) at Jun. 30, 2022	12,127,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense		1,340		1,340
Exercise of stock options (shares)	209
Net loss			(8,533)	(8,533)
Balance at Sep. 30, 2022	$ 1	$ 131,298	$ (108,215)	$ 23,084
Balance (shares) at Sep. 30, 2022	12,127,594