Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Royalty revenue	$ 1.5	$ 1.7	$ 1.6	$ 3.4
Non-cash royalty revenue related to the sale of future royalties	2.3		2.3
Total revenue	3.8	1.7	3.9	3.4
Operating expense:
Research and development	10.2	6.3	17.8	11.8
General and administrative	2.1	2.1	4.3	4.4
Foreign exchange (gain) loss, net	0.1	(0.2)		0.5
Total operating expense	12.4	8.2	22.1	16.7
Loss from operations	(8.6)	(6.5)	(18.2)	(13.3)
Other (expense) income:
Non-cash interest expense on liability related to sale of future royalties	(0.5)		(0.9)
Interest income	0.1		0.1	0.1
Total other (expense) income	(0.4)		(0.8)	0.1
Loss before tax	(9.0)	(6.5)	(19.0)	(13.2)
Income tax expense	0.1		0.1
Net loss	$ (9.1)	$ (6.5)	$ (19.1)	$ (13.2)
Basic and diluted net loss per share (in dollars per share)	$ (0.24)	$ (0.17)	$ (0.49)	$ (0.34)
Basic and diluted weighted-average shares outstanding (in shares)	38,640,487	38,636,946	38,640,487	38,630,587