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Asset Acquisitions and Contingent Consideration (Tables) | 9 Months Ended
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Sep. 30, 2019
Business Combinations [Abstract] |
Schedule of IPR&D Expense | The Company recorded the following IPR&D expense on the condensed consolidated statements of operations (in thousands):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
GB001 |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 19,148 |
GB004 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 20,000 |
GB1275 |  |  | — |  |  |  | 7,500 |  |  |  | 1,000 |  |  |  | 7,500 |
Other Programs |  |  | — |  |  |  | 761 |  |  |  | 1,000 |  |  |  | 3,011 |
Total in process research and development |  | $ | — |  |  | $ | 8,261 |  |  | $ | 2,000 |  |  | $ | 49,659 |

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