CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2020	$ 67,210	$ 109	$ 125,094	$ (57,993)
Beginning Balance, Shares at Dec. 31, 2020		10,933
Stock-based compensation	2,301		2,301
Net loss	(5,182)			(5,182)
Ending Balance at Mar. 31, 2021	64,329	$ 109	127,395	(63,175)
Ending Balance, Shares at Mar. 31, 2021		10,933
Beginning Balance at Dec. 31, 2021	54,879	$ 110	132,363	(77,594)
Beginning Balance, Shares at Dec. 31, 2021		10,990
Stock-based compensation	1,607		1,607
Restricted stock awards cancelled, Shares		(5)
Net loss	(6,674)			(6,674)
Ending Balance at Mar. 31, 2022	$ 49,812	$ 110	$ 133,970	$ (84,268)
Ending Balance, Shares at Mar. 31, 2022		10,985