CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Common Stock Purchase Agreement Lincoln Park	Additional Paid-In Capital	Accumulated Deficit
Balance at Dec. 31, 2020	$ 16,594	$ 46		$ 202,154	$ (185,606)
Balance (in shares) at Dec. 31, 2020		4,410,909
Proceeds from exercise of stock options	218			218
Proceeds from exercise of stock options (in shares)		26,082
Proceeds from exercise of warrants	984			984
Proceeds from exercise of warrants (in shares)		54,105
Commitment shares issued/ proceeds from issuance of common stock (in shares)	10,234	$ 1		10,233
Commitment shares issued/ proceeds from issuance of common stock (in shares)		407,047	407,047
Stock-based compensation	1,643			1,643
Net income (loss) for the period	(28,457)				(28,457)
Balance at Dec. 31, 2021	1,216	$ 47		215,232	(214,063)
Balance (in shares) at Dec. 31, 2021		4,898,143
Common stock issued upon vesting of restricted stock units and exercised stock options	(5)			(5)
Common stock issued upon vesting of restricted stock units and exercised stock options (in shares)		16,810
Commitment shares issued/ proceeds from issuance of common stock (in shares)	6,934	$ 1		6,933
Commitment shares issued/ proceeds from issuance of common stock (in shares)		1,452,065	99,276
Stock-based compensation	1,802			1,802
Net income (loss) for the period	8,027				8,027
Balance at Dec. 31, 2022	$ 17,974	$ 48		$ 223,962	$ (206,036)
Balance (in shares) at Dec. 31, 2022		6,466,294