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Dispositions - Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Nov. 04, 2015 | Mar. 31, 2018 | Dec. 31, 2018
Asset Purchase Agreement and Ology Bioservices License Agreement [Member] |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Entitled to receive cash consideration |  |  | $ 4.6
Amount received from sale of discontinued operation |  | $ 1.0 |
Biodefense Business [Member] |  |  |
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] |  |  |
Royalties receivable percentage on net sales | 15.00% |  |

X
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X
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X
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- Details
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- Details
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