Debt (Details)					12 Months Ended
	Jan. 04, 2019 USD ($)	Jan. 03, 2019	Oct. 28, 2018 USD ($)	Jan. 25, 2018 USD ($)	Oct. 28, 2018 USD ($)	Oct. 29, 2017 USD ($)	Jun. 08, 2018 USD ($)	Jan. 31, 2018 USD ($)	Jan. 24, 2018 USD ($)
Extinguishment of Debt [Line Items]
Approximate weekly employee compensation, payroll taxes and payments to vendors					$ 20,000,000
DZ Financing Program
Extinguishment of Debt [Line Items]
Accounts receivable securitization program, term				2 years
Accounts receivable securitization program, maximum investment limit				$ 115,000,000.0
Outstanding borrowings			$ 50,000,000		$ 50,000,000	$ 50,000,000
Weighted average annual interest rate during period					3.60%	3.10%
DZ Financing Program, 2018 Amendment | Subsequent Event
Extinguishment of Debt [Line Items]
Covenant, minimum tangible net worth, through fiscal 2019	$ 30,000,000.0
Covenant, minimum tangible net worth, fiscal 2020	$ 40,000,000.0
Maximum permitted delinquent receivables, payment terms (excess of)	60 days
Maximum permitted delinquent receivables, percent	10.00%	2.50%
Line of Credit | Minimum
Extinguishment of Debt [Line Items]
Target liquidity ratio					1.5
Line of Credit | Maximum
Extinguishment of Debt [Line Items]
Target liquidity ratio					2.0
Letter of Credit | DZ Financing Program
Extinguishment of Debt [Line Items]
Current borrowing capacity				$ 35,000,000.0
Covenant, minimum tangible net worth			$ 40,000,000.0
Covenant, maximum debt to tangible net worth ratio			3
Covenant, minimum liquid assets			$ 15,000,000.0		$ 15,000,000.0
Available borrowing capacity of facility			38,300,000		38,300,000
Additional borrowing capacity of facility							$ 10,000,000
Credit facility debt outstanding			25,400,000		25,400,000
Collateral								$ 30,000,000
Letter of Credit | DZ Financing Program | Short Term Financing Program
Extinguishment of Debt [Line Items]
Credit facility debt outstanding			23,500,000		23,500,000
Letter of Credit | DZ Financing Program | Federal Funds Rate
Extinguishment of Debt [Line Items]
Basis spread on variable rate				3.00%
Letter of Credit | DZ Financing Program | Prime Rate
Extinguishment of Debt [Line Items]
Basis spread on variable rate				2.50%
Letter of Credit | PNC Financing Program
Extinguishment of Debt [Line Items]
Current borrowing capacity									$ 160,000,000.0
Letter of Credit, Security Deposit | DZ Financing Program
Extinguishment of Debt [Line Items]
Credit facility debt outstanding			1,100,000		1,100,000
Letter of Credit, Corporate Credit Card Program | DZ Financing Program
Extinguishment of Debt [Line Items]
Credit facility debt outstanding			$ 800,000		$ 800,000