Long-Term Debt - Narrative (Details)			12 Months Ended
	Nov. 07, 2019 USD ($)	Nov. 15, 2016	Jan. 26, 2020 USD ($)	Jan. 27, 2019 USD ($)	Jan. 28, 2018 USD ($)
Line of Credit Facility [Line Items]
Outstanding balance			$ 197,000,000	$ 212,312,000
Write-off of deferred financing costs and debt discount			514,000	0	$ 0
United States of America, Dollars
Line of Credit Facility [Line Items]
Description of variable rate basis		(1) the Base Rate (as defined below) plus a margin ranging from 0.25% to 1.25% depending upon the Company’s consolidated leverage ratio or (2) LIBOR (determined with respect to deposits in U.S. Dollars) for an interest period to be selected by the Company plus a margin ranging from 1.25% to 2.25% depending upon the Company's consolidated leverage ratio (such margin, the "Applicable Margin").
Base Rate
Line of Credit Facility [Line Items]
Description of variable rate basis		the highest of (a) the prime rate of the administrative agent, (b) ½ of 1% above the federal funds effective rate published by the Federal Reserve Bank of New York and (c) one-month LIBOR (determined with respect to deposits in U.S. Dollars) plus 1.00%.
Federal Funds
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.00%
Term loans
Line of Credit Facility [Line Items]
Outstanding balance			0	115,312,000
Revolving loans
Line of Credit Facility [Line Items]
Outstanding balance			197,000,000.0	$ 97,000,000
Remaining borrowing capacity			403,000,000.0
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Facilities, amount outstanding			0
Swingline Loans [Member]
Line of Credit Facility [Line Items]
Facilities, amount outstanding			0
Revolving Loans and Non US Dollars LC [Member]
Line of Credit Facility [Line Items]
Facilities, amount outstanding			$ 0
The Credit Agreement | Minimum
Line of Credit Facility [Line Items]
Interest coverage ratio	3.50
Total leverage ratio following a material acquisition	4.00
The Credit Agreement | Base Rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.25%
The Credit Agreement | Base Rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
The Credit Agreement | Federal Funds
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
The Credit Agreement | LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
The Credit Agreement | LIBOR | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.25%
The Credit Agreement | LIBOR | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
The Credit Agreement | Revolving loans
Line of Credit Facility [Line Items]
Facilities, maximum borrowing capacity	$ 600,000,000.0
Increase in borrowing capacity availability	$ 300,000,000.0
Maximum consolidated leverage ratio	3.00
Initial commitment fee, percentage	0.20%
The Credit Agreement | Revolving loans | Minimum
Line of Credit Facility [Line Items]
Commitment fee, percentage	0.20%
The Credit Agreement | Revolving loans | Maximum
Line of Credit Facility [Line Items]
Commitment fee, percentage	0.35%
The Credit Agreement | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Facilities, maximum borrowing capacity	$ 40,000,000.0
Fronting fee for each letter of credit issued, percentage	0.125%
The Credit Agreement | Swingline Loans [Member]
Line of Credit Facility [Line Items]
Facilities, maximum borrowing capacity	$ 25,000,000.0
The Credit Agreement | Foreign Line of Credit [Member]
Line of Credit Facility [Line Items]
Facilities, maximum borrowing capacity	$ 40,000,000.0