Other Current Assets and Other Assets - Non-current (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 28, 2018	Jan. 27, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred financing costs	$ 3,496	$ 3,873
Restricted cash	5,253	5,253
Insurance recoveries/receivables for accrued insurance claims	5,576	6,722
Other non-current deposits and assets	12,430	12,342
Total other assets	26,755	$ 28,190
Decrease in accrued insurance claims	$ 13,900