CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
License revenue	$ 2,593	$ 77	$ 3,657	$ 117
Product revenue	75	0	75	0
Revenues	2,668	77	3,732	117
Operating expenses:
Cost of goods sold	70	0	70	0
Research and development	1,857	2,501	3,713	4,627
General and administrative	1,380	1,197	2,995	2,548
Total operating expenses	3,307	3,698	6,778	7,175
Income (loss) from operations	(639)	(3,621)	(3,046)	(7,058)
Other expense:
Other expense, net	(230)	(20)	(428)	(10)
Non-cash gain on changes in the fair value of warrants	0	190	0	612
Other income (expense), net	(230)	170	(428)	602
Net loss and comprehensive loss	$ (869)	$ (3,451)	$ (3,474)	$ (6,456)
Basic net loss per common share	$ (0.04)	$ (0.16)	$ (0.16)	$ (0.30)
Diluted net loss per common share	$ (0.04)	$ (0.17)	$ (0.16)	$ (0.33)
Weighted average shares used in computing basic net loss per common share	21,204	21,204	21,204	21,199
Weighted average shares used in computing diluted net loss per common share	21,204	21,204	21,204	21,201