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In-process research and development and goodwill (Details) (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2013
|
Dec. 31, 2011
|
|
| Segment Reporting Information [Line Items] | |||
| Goodwill | $ 5,502,000 | $ 13,954,000 | $ 5,502,000 |
| Impairment of IPR&D assets | 9,600,000 | ||
|
Biosciences [Member]
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| Segment Reporting Information [Line Items] | |||
| Goodwill | 5,502,000 | 5,502,000 | 5,502,000 |
|
Biodefense [Member]
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| Segment Reporting Information [Line Items] | |||
| Goodwill | $ 0 | $ 8,452,000 | $ 0 |