Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating expenses:
Research and development, net of grant reimbursement	$ 591	$ 308	$ 1,135	$ 882
General and administrative	818	845	1,596	1,722
Gain on sale of property and equipment	(246)		(346)
Total operating expenses	1,163	1,153	2,385	2,604
Operating loss	(1,163)	(1,153)	(2,385)	(2,604)
Interest income	27	94	99	186
Net loss	$ (1,136)	$ (1,059)	$ (2,286)	$ (2,418)
Net loss per share, basic and diluted	$ (0.05)	$ (0.06)	$ (0.09)	$ (0.14)
Shares used in computing net loss per share, basic and diluted	24,779	17,162	24,630	17,162