Summary of Significant Accounting Policies (Details 5)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting
Number of operating segments			1
Lilly | Revenue
Collaborative Partner:
Percentages of revenue recognized	35.00%	2.00%	28.00%	19.00%
Novartis | Revenue
Collaborative Partner:
Percentages of revenue recognized	54.00%	64.00%	44.00%	43.00%
Roche | Revenue
Collaborative Partner:
Percentages of revenue recognized	10.00%	24.00%	14.00%	30.00%
Sanofi | Revenue
Collaborative Partner:
Percentages of revenue recognized	0.00%	1.00%	10.00%	1.00%