Summary of Significant Accounting Policies (Details 6)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting
Number of operating segments	1
Amgen | Revenues
Collaborative Partner:
Percentages of revenue recognized	6.00%	6.00%	30.00%
Bayer HealthCare | Revenues
Collaborative Partner:
Percentages of revenue recognized		4.00%	15.00%
Biotest | Revenues
Collaborative Partner:
Percentages of revenue recognized	3.00%	5.00%	14.00%
Lilly | Revenues
Collaborative Partner:
Percentages of revenue recognized	18.00%	2.00%	2.00%
Novartis | Revenues
Collaborative Partner:
Percentages of revenue recognized	38.00%	49.00%	16.00%
Roche | Revenues
Collaborative Partner:
Percentages of revenue recognized	34.00%	30.00%
Sanofi | Revenues
Collaborative Partner:
Percentages of revenue recognized	1.00%	3.00%	23.00%