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Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jun. 29, 2019 | Jun. 30, 2018 | Sep. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Noncontrolling interest owned by the subsidiary | 20.00% |  |
Restricted cash | $ 10,924 | $ 13,978 | $ 10,899
Net cash used in investing activities | $ (65,007) | (124,483) |
Accounting Standards Update 2016-18 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Restricted cash |  | 14,000 | $ 12,600
Net cash used in investing activities |  | $ (1,300) |

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