Commitments and Contingencies (Details) $ in Thousands	12 Months Ended
	Jan. 25, 2020 USD ($) lease	Jan. 27, 2019 USD ($)	Jan. 26, 2019 USD ($)
Retained earnings	$ (49,068)		$ 66,773
Deferred Tax Assets, Gross	$ 339,617		84,313
Number of real estate leases for store properties that qualify for treatment as finance leases | lease	2
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Weighted average remaining lease term -Operating leases (years)	12 years 6 months
Weighted average remaining lease term - Finance leases (years)	4 years 7 months 6 days
Weighted average discount rate - Operating leases	6.23%
Weighted average discount rate - Finance leases	8.28%
Lease cost
Operating lease cost	$ 142,508
Variable lease cost	23,086
Amortization of right-of-use assets	298
Interest on lease liabilities	129
Total lease cost	166,021
Supplemental disclosures of cash flow information related to leases
Cash paid for operating lease liabilities	126,511
Right-of-use assets obtained in exchange for operating lease liabilities	310,818
Cash paid for finance lease liabilities	294
Minimum lease payments for leases signed but not yet commenced	$ 173,000
Minimum
Lease term	5 years
Renewal term	5 years
Maximum
Lease term	20 years
Renewal term	20 years
ASU 2016-02
Retained earnings		$ 98,600
Deferred Tax Assets, Gross		$ 32,700	$ 32,743