CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid in Capital.	Accumulated Deficit	Total
Beginning Balance at Dec. 31, 2020	$ 5	$ 82,286	$ (67,221)	$ 15,070
Beginning Balance (in shares) at Dec. 31, 2020	4,542
Issuance of common stock, net of fees	$ 2	15,847		15,849
Issuance of common stock, net of fees (in shares)	2,189
Exercise of warrants, net of fees		4,157		4,157
Exercise of warrants, net of fees (in shares)	429
Stock-based compensation		821		821
Net loss			(10,440)	(10,440)
Ending Balance at Dec. 31, 2021	$ 7	103,111	(77,661)	25,457
Ending Balance (in shares) at Dec. 31, 2021	7,160
Issuance of common stock, net of fees	$ 1	1,733		1,734
Issuance of common stock, net of fees (in shares)	800
Stock-based compensation		851		851
Net loss			(13,868)	(13,868)
Ending Balance at Dec. 31, 2022	$ 8	$ 105,695	$ (91,529)	$ 14,174
Ending Balance (in shares) at Dec. 31, 2022	7,960