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ACQUISITION OF SANGAMO THERAPEUTICS FRANCE S.A.S. - Summary of Estimated Fair Value of Net Assets Acquired (Detail) - USD ($) $ in Thousands | Oct. 01, 2018 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 38,550 | $ 39,273
Sangamo France |  |  |
Business Acquisition [Line Items] |  |  |
Consideration transferred | $ 45,911 |  |
Fair value of non-controlling interest | 35,829 |  |
Fair value of Sangamo France | 81,740 |  |
Cash | 4,779 |  |
Current assets | 2,427 |  |
Property and equipment | 1,857 |  |
IPR&D | 55,019 |  |
Other assets | 155 |  |
Current liabilities | (9,761) |  |
Assumed debt liabilities | (4,933) |  |
Deferred tax liability, net | (6,798) |  |
Fair value of net identifiable assets acquired | 42,745 |  |
Goodwill | 38,995 |  |
Total fair value of net assets acquired | $ 81,740 |  |

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