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Revenue Recognition - Summary of Changes in Contract Assets and Liabilities (Details) | 3 Months Ended
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Mar. 31, 2018 USD ($)
Contract liabilities |
Deductions | $ (652,000)
MedImmune |
Contract assets |
Balance at January 1, 2018 | 1,693,530
Additions | 1,339,961
Deductions | (3,750)
Balance at March 31, 2018 | 3,029,741
Contract liabilities |
Balance at January 1, 2018 | 1,145,500
Additions | 582,500
Deductions | (531,583)
Balance at March 31, 2018 | 1,196,417
ApolloBio |
Contract liabilities |
Balance at January 1, 2018 | 0
Additions | 23,000,000
Deductions | 0
Balance at March 31, 2018 | 23,000,000
Other Counterparty |
Contract liabilities |
Balance at January 1, 2018 | 271,894
Additions | 0
Deductions | (120,534)
Balance at March 31, 2018 | $ 151,360

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