Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 9,799	$ 13,908
Restricted cash	15	15
Prepaid expenses	1,332	153
Other assets	65	42
Total current assets	11,211	14,118
Right-of-use assets and other	143	150
Property and equipment, net	181	200
Total assets	11,535	14,468
Current liabilities:
Accounts payable	1,273	638
Accrued liabilities	2,411	1,422
Lease liability, short-term	22	22
Total current liabilities	3,706	2,082
Lease and other long-term liabilities	89	94
Total liabilities	3,795	2,176
Commitments and contingencies (Note 5)
Stockholders’ equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or outstanding as of March 31, 2020 and December 31, 2019.
Common stock, $0.001 par value per share, 100,000,000 shares authorized; 15,677,307 and 15,592,718 shares issued and outstanding as of March 31, 2020 and December 31, 2019, respectively.	16	16
Additional paid–in capital	49,342	49,130
Accumulated other comprehensive (loss) income	(22)	12
Accumulated deficit	(41,596)	(36,866)
Total stockholders’ equity	7,740	12,292
Total liabilities and stockholders’ equity	$ 11,535	$ 14,468