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Acquisitions - Preliminary Allocation of purchase price (Details) - USD ($) $ in Thousands | 4 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2019 | Aug. 23, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets - IPR&D | $ 576,500 |  |
Goodwill | 82,341 | $ 82,341 |
Agilis |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Cash and cash equivalents | 328 |  | $ 328
Prepaid expenses and other current assets | 181 |  | 181
Fixed assets | 153 |  | 153
Other assets | 38 |  | 38
Intangible assets - IPR&D |  |  | 480,000
Intangible assets - in process research and development (“IPRD”) Adjustment | 96,500 |  |
Accounts payable and accrued expenses | (3,828) |  | (3,828)
Deferred tax liability | (122,032) |  | (115,200)
Deferred tax liability adjustment | (6,832) |  |
Fair value of net assets acquired | 451,340 |  | 361,672
Fair value of net assets acquired adjustment | 89,668 |  |
Goodwill |  |  | 100,309
Goodwill Adjustment | (17,968) |  |
Total purchase price | 533,681 |  | $ 461,981
Total purchase price adjustment | $ 71,700 |  |

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