Summary of Significant Accounting Policies (Details 5)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting
Number of reportable segments	1
Amgen
Collaborative Partner:
Percentages of revenue recognized	1.00%	23.00%
Bayer HealthCare
Collaborative Partner:
Percentages of revenue recognized		20.00%
Biotest
Collaborative Partner:
Percentages of revenue recognized	1.00%	23.00%
Lilly
Collaborative Partner:
Percentages of revenue recognized	49.00%	6.00%
Novartis
Collaborative Partner:
Percentages of revenue recognized	7.00%	24.00%
Roche
Collaborative Partner:
Percentages of revenue recognized	41.00%