Collaborative Arrangements - BioAxone Biosciences, Inc. (Details) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | ||||||||
| Intangible asset impairment charges | $ 29,000 | $ 0 | $ 0 | $ 0 | $ 0 | $ 29,000 | $ 255,340 | |
| Variable Interest Entity, Primary Beneficiary | Other Intangible Assets | BioAxone Biosciences, Inc | ||||||||
| Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] | ||||||||
| Intangible asset impairment charges | $ 29,000 | $ 29,000 | $ 29,000 | |||||