Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 1,131	$ 800	$ 2,568	$ 3,216
General and administrative	3,878	3,120	5,987	5,627
Loss from operations	(5,009)	(3,920)	(8,555)	(8,843)
Other (expense)/income
Unrealized foreign exchange loss	1		(2)	(8)
Amortization expense	(8)		(15)
Unrealized (loss)/gain on securities	(8)	(84)	(99)	98
Interest income	9	12	18	28
Interest expense	(57)	(9)	(115)	(9)
Total other (expense)/income	(63)	(81)	(213)	109
Net loss	$ (5,072)	$ (4,001)	$ (8,768)	$ (8,734)
Basic net loss per common share	$ (0.19)	$ (0.15)	$ (0.34)	$ (0.34)
Diluted net loss per common share	$ (0.19)	$ (0.15)	$ (0.34)	$ (0.34)
Weighted-average number of common shares outstanding basic	26,052	26,003	26,067	26,003
Weighted-average number of common shares outstanding diluted	26,052	26,003	26,067	26,003