Other Current Assets and Other Assets - Non-current (Details) - USD ($) $ in Thousands	Jul. 25, 2020	Jan. 25, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Long-term contract assets	$ 19,910	$ 22,653
Deferred financing costs	6,153	7,133
Restricted cash	3,753	3,753
Insurance recoveries/receivables for accrued insurance claims	12,634	4,864
Other non-current deposits and assets	8,047	9,035
Other assets	$ 50,497	$ 47,438