Components of Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Jul. 11, 2020	Dec. 28, 2019
Other Liabilities Disclosure [Line Items]
Deferred income	$ 21,745	$ 24,840
Deferred compensation	16,251	15,558
Fair value of derivative instruments	990	792
Other deferred credits	1,376	1,609
Other	1,532	1,382
Total	51,544	$ 44,181
CARES Act
Other Liabilities Disclosure [Line Items]
Deferred payroll taxes under the CARES Act	$ 9,650