Agreements (Details 5) (Bayer HealthCare, USD $)	12 Months Ended		24 Months Ended	1 Months Ended	12 Months Ended	69 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2013	Oct. 31, 2008 Exclusive license	Jun. 30, 2012 Exclusive license	Jun. 30, 2014 Exclusive license	Oct. 31, 2008 Exclusive license Maximum	Jun. 30, 2014 Exclusive license Phase II clinical trial	Oct. 31, 2008 Exclusive license Development milestones	Oct. 31, 2008 Exclusive license Regulatory milestones	Oct. 31, 2008 Exclusive license Sales milestones
Collaborative Agreements disclosures
Payments received under collaboration agreement				$ 4,000,000		$ 3,000,000
Potential milestone payments receivable							170,500,000	4,000,000	16,000,000	44,500,000	110,000,000
Estimated increase in license and milestone fees recognized due to change in estimate					1,200,000
Costs related to clinical materials sold	$ 0	$ 297,000	$ 213,000