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Revenue Recognition (Tables) | 9 Months Ended
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Sep. 30, 2018
Revenue from Contract with Customer [Abstract] |
Contract with Customer, Asset and Liability | The following table summarizes changes in the Company’s contract assets and liabilities for the nine months ended September 30, 2018:
| Balance at January 1, 2018 |  | Additions |  | Deductions |  | Balance at September 30, 2018
Contract assets |  |  |  |  |  |  |
Accounts receivable from MedImmune | $ | 1,693,530 |  |  | $ | 3,865,641 |  |  | $ | (3,206,848 | ) |  | $ | 2,352,323 |
Contract liabilities |  |  |  |  |  |  |
Deferred revenue - MedImmune | 1,145,500 |  |  | 732,200 |  |  | (1,582,167 | ) |  | 295,533 |
Deferred revenue - ApolloBio | — |  |  | 23,000,000 |  |  | (23,000,000 | ) |  | — |
Deferred revenue - Other | $ | 271,894 |  |  | $ | 93,750 |  |  | $ | (208,291 | ) |  | $ | 157,353 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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