Sponsored Research and Clinical Trial Agreements - Additional Information (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
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Sep. 01, 2019 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
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| Cost of the SRA | $ 100,000 | |||||
| Expected period of research study | 4 months | |||||
| Research and Development Expense (Excluding Acquired in Process Cost) | $ 14,571,000 | $ 16,082,000 | $ 56,355,000 | $ 58,528,000 | $ 0 | |
| University of Texas [Member] | Cellvation [Member] | ||||||
| Research and Development Expense (Excluding Acquired in Process Cost) | $ 0 | $ 100,000 | $ 100,000 | $ 200,000 | ||
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- Definition Represents the cost of the sponsored research arrangement. No definition available.
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- Definition Represents the expected period for conducting the research study. No definition available.
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- Definition The costs incurred in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, excluding in-process research and development acquired in a business combination consummated during the period. Excludes software research and development, which has a separate concept. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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