Basis of Presentation and Preparation - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	$ 208,513	$ 185,733	$ 141,487
Net cash used in financing activities	$ (135,063)	(181,958)	(98,267)
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		8,900	3,500
Net cash used in financing activities		$ (8,900)	$ (3,500)
Scenario, Forecast
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets				$ 300,000
Lease liability				$ 300,000