Other Current Assets and Other Assets - Current (Details) - USD ($) $ in Thousands	Oct. 24, 2020	Jan. 25, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 22,745	$ 12,769
Deposits and other current assets	14,255	17,447
Restricted cash	1,372	1,556
Receivables on equipment sales	90	219
Other current assets	$ 38,462	$ 31,991