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Revenue Recognition, Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | $ 173,653 | $ 149,434 | $ 511,667 | $ 367,064
U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 143,988 |  | 409,965 |
Non-U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 29,665 |  | 101,702 |
Product Sales [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 133,269 | 114,296 | 389,115 | 259,875
Product Sales [Member] | U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 127,332 |  | 363,254 |
Product Sales [Member] | Non-U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 5,937 |  | 25,861 |
Contract Manufacturing [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 22,172 | 18,912 | 71,963 | 52,700
Contract Manufacturing [Member] | U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 0 |  | 0 |
Contract Manufacturing [Member] | Non-U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 22,172 |  | 71,963 |
Contracts and Grants [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 18,212 | $ 16,226 | 50,589 | $ 54,489
Contracts and Grants [Member] | U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | 16,656 |  | 46,711 |
Contracts and Grants [Member] | Non-U.S. Government [Member] |  |  |  |
Disaggregation of revenue [Abstract] |  |  |  |
Total revenues | $ 1,556 |  | $ 3,878 |

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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