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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions | Feb. 27, 2019 | Sep. 29, 2019
--- | --- | ---
Business Acquisition [Line Items] |  |
Aggregate purchase price | $ 60 |
Subsidiaries |  |
Business Acquisition [Line Items] |  |
Subsidiary percent owned |  | 80.10%
FTT Inc |  |
Business Acquisition [Line Items] |  |
Percentage of voting interests acquired | 80.10% |
FTT Inc | Subsidiaries |  |
Business Acquisition [Line Items] |  |
Subsidiary percent owned |  | 19.90%
FTT Core |  |
Business Acquisition [Line Items] |  |
Percentage of voting interests acquired | 80.10% |

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