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Revenue earned during the period arising from products sold or services provided under the terms of a contract, not elsewhere specified in the taxonomy. May include government contracts, construction contracts, and any other contract related to a particular project or product.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 912

-SubTopic 310

-Section 45

-Paragraph 1

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U.S. Government Agreement, Joint Venture and Collaborations (Details) (USD $)	12 Months Ended			47 Months Ended	1 Months Ended		30 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Oct. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Feb. 28, 2011	Oct. 31, 2013
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Ownership percentage	20.00%			20.00%			20.00%
Government contracts	$ 26,213,000us-gaap_ContractsRevenue	$ 17,708,000us-gaap_ContractsRevenue	$ 20,671,000us-gaap_ContractsRevenue
Research and development collaborations	4,446,000	3,207,000	1,405,000
Cadila [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Joint Venture Percentage Owned By Others	80.00%			80.00%			80.00%
HHS BARDA Contract [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Government contracts	26,000,000			78,000,000
Trial costs incurred			2,900,000
Government Contract Receivable								97,000,000
HHS BARDA Option for Additional Period [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Contract term	2 years
Government Contract Receivable	70,000,000			70,000,000			70,000,000
License Agreement with LG Life Sciences, Ltd. [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Upfront license payment								2,500,000
PATH Vaccine Solutions [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Research and development collaborations	2,600,000						6,400,000
Research and development collaboration increase									400,000
Contract					$ 1,000,000	$ 3,500,000	$ 2,000,000