Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Deficit (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2021	$ 17,284	$ 4	$ 138,181		$ (120,901)
Balance, shares at Dec. 31, 2021		40,389,975
Stock option exercises	3		3
Stock option exercises, shares		4,828
Issuance of common stock, net of issuance costs, value	3,791		3,791
Issuance of common stock, net of issuance costs, shares		700,549
Stock-based compensation expense	1,137		1,137
Unrealized loss on short-term investments	(50)			$ (50)
Net income (Loss)	3,069				3,069
Balance at Mar. 31, 2022	25,234	$ 4	143,112	(50)	(117,832)
Balance, shares at Mar. 31, 2022		41,095,352
Balance at Dec. 31, 2022	$ 3,896	$ 4	147,476	(18)	(143,566)
Balance, shares at Dec. 31, 2022	41,690,383	41,690,383
Stock option exercises	$ 0
Issuance of common stock, net of issuance costs, value	119		119
Issuance of common stock, net of issuance costs, shares		410,836
Stock-based compensation expense	1,167		1,167
Unrealized loss on short-term investments	19			19
Net income (Loss)	(10,014)				(10,014)
Balance at Mar. 31, 2023	$ (4,813)	$ 4	$ 148,762	$ 1	$ (153,580)
Balance, shares at Mar. 31, 2023	42,101,219	42,101,219