Condensed Consolidated Statements of Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Collaborative research and development	$ 461	$ 5,702	$ 601	$ 5,736
Royalty income	472	269	717	512
Total revenues	933	5,971	1,318	6,248
Operating expenses:
Research and development	4,269	3,165	8,088	7,343
General and administrative	2,472	2,900	5,044	6,185
Total operating expenses	6,741	6,065	13,132	13,528
Loss from operations	(5,808)	(94)	(11,814)	(7,280)
Interest and other income	26	27	49	51
Net loss	$ (5,782)	$ (67)	$ (11,765)	$ (7,229)
Net loss per common share:
Basic and diluted	$ (0.13)	$ 0.00	$ (0.28)	$ (0.21)
Weighted average common shares:
Basic and diluted	44,530	34,177	41,980	34,176
Net loss	$ (5,782)	$ (67)	$ (11,765)	$ (7,229)
Other comprehensive (loss) income:
Foreign currency translation adjustments	(1)	(15)	3	(30)
Net unrealized gain on marketable securities	0	0	0	1
Other comprehensive (loss) income	(1)	(15)	3	(29)
Comprehensive loss	$ (5,783)	$ (82)	$ (11,762)	$ (7,258)