Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	Dec. 30, 2018	Sep. 29, 2019
Operating lease right-of-use assets	$ 0	$ 110,051,000
Operating lease liabilities		$ 107,260,000
Cumulative effect on retained earnings	0
Accounting Standards Update 2016-02
Operating lease right-of-use assets	115,000,000
Operating lease liabilities	$ 115,000,000