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The Business - Cell Therapy Development and Manufacturing (Details) - USD ($) $ in Millions |  | 1 Months Ended |
--- | --- | --- | ---
Oct. 02, 2017 | Dec. 31, 2017 | May 31, 2017 | Mar. 11, 2016
Subsidiary or Equity Method Investee [Line Items] |  |  |  |
Revenue from grants | $ 1.9 | $ 1.9 | $ 5.7 |
Equity Method Investment, Ownership Percentage |  |  |  | 19.90%
Hitachi America [Member] |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 21.00%

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