Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Series 1 Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total
Balance of beginning at Dec. 31, 2020		$ 11	$ 245,992	$ (46,760)		$ 199,243
Balance of beginning (in Shares) at Dec. 31, 2020	8,027	11,211,840
Settlement of restricted stock units			(228)			(228)
Settlement of restricted stock units (in Shares)		16,766
Stock-based compensation - restricted stock units			1,303			1,303
Stock-based compensation - stock options			1,437			1,437
Unrealized (loss) gain on marketable debt securities					(164)	(164)
Net loss				(13,465)		(13,465)
Balance of Ending at Mar. 31, 2021		$ 11	248,504	(60,225)	(164)	188,126
Balance of Ending (in Shares) at Mar. 31, 2021	8,027	11,228,606
Balance of beginning at Dec. 31, 2021		$ 11	256,126	(94,012)	(211)	161,914
Balance of beginning (in Shares) at Dec. 31, 2021	8,027	11,235,731
Settlement of restricted stock units			(72)			(72)
Settlement of restricted stock units (in Shares)		16,196
Stock-based compensation - restricted stock units			314			314
Stock-based compensation - stock options			1,565			1,565
Unrealized (loss) gain on marketable debt securities					(731)	(731)
Net loss				(10,755)		(10,755)
Balance of Ending at Mar. 31, 2022		$ 11	$ 257,933	$ (104,767)	$ (942)	$ 152,235
Balance of Ending (in Shares) at Mar. 31, 2022	8,027	11,251,927