Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jan. 26, 2019	Jan. 27, 2018
Payables and Accruals [Abstract]
Accrued payroll and related taxes	$ 25,591	$ 23,010
Accrued employee benefit and incentive plan costs	25,482	16,097
Accrued construction costs	36,449	24,582
Other current liabilities	16,552	15,968
Total other accrued liabilities	$ 104,074	$ 79,657