U.S. Government Agreement and Collaborations (Details) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended	15 Months Ended	26 Months Ended	1 Months Ended		1 Months Ended	3 Months Ended	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Feb. 28, 2011	Feb. 28, 2011 HHS BARDA Contract [Member]	Mar. 31, 2013 HHS BARDA Contract [Member]	Mar. 31, 2013 HHS BARDA Contract [Member]	Mar. 31, 2013 HHS BARDA Contract [Member]	Feb. 28, 2011 HHS BARDA Option for Additional Period [Member]	Feb. 28, 2011 License Agreement with LG Life Sciences, Ltd. [Member]	Jul. 31, 2012 PATH Vaccine Solutions [Member]	Mar. 31, 2013 PATH Vaccine Solutions [Member]	Mar. 31, 2013 PATH Vaccine Solutions [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Contract receivable			$ 179,000,000	$ 97,000,000				$ 82,000,000
Contract term				3 years				2 years
Government contracts	3,441,000	4,642,000			3,300,000		38,000,000
Research and development collaborations	392,000									2,000,000	400,000	1,700,000
Expected costs					3,100,000	3,100,000	3,100,000
Trial costs incurred						3,000,000
Upfront license payment									$ 2,500,000
Royalty payments, percent									10.00%
Potential funding of external clinical development costs										50.00%