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Revenue Recognition - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | $ 2,000,868 | $ 2,644,543 | $ 27,979,273 | $ 33,432,852
Revenue recognized from deferred revenue beginning balance | 316,000 |  | 1,300,000 |
ApolloBio |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 0 |  | 23,000,000 |
Revenue recognized from deferred revenue beginning balance |  |  | 23,000,000 |
MedImmune |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,800,000 |  | 4,500,000 |
Revenue recognized from deferred revenue beginning balance |  |  | 1,582,167 |
Other Counterparty |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 33,000 |  | 186,000 |
Revenue recognized from deferred revenue beginning balance |  |  | 208,291 |
GeneOne Life Sciences |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from Related Parties | $ 155,000 | $ 104,000 | $ 305,000 | $ 426,000

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 + Details
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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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