Geographic and Significant Customer Information - Summary of Different Geographic Regions (Details) - USD ($) $ in Thousands	Apr. 03, 2020	Sep. 27, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets by Geographic Region	$ 125,765	$ 132,647
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets by Geographic Region	107,892	116,037
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets by Geographic Region	7,946	8,917
Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets by Geographic Region	$ 9,927	$ 7,693