Borrowings (Details) - USD ($)	3 Months Ended		6 Months Ended
	Aug. 04, 2018	May 05, 2018	Aug. 04, 2018	Feb. 03, 2018
Long-Term Borrowings [Line Items]
Interest rate on borrowings	5.59%		5.59%
Unamortized discount	$ (1,014,000)		$ (1,014,000)	$ (1,184,000)
Unamortized fees paid to lenders	(2,316,000)		(2,316,000)	2,380,000
Borrowings, net	249,920,000		249,920,000	249,686,000
Short-term portion of borrowings, net	0		0	0
Long-term portion of borrowings, net	$ 249,920,000		249,920,000	249,686,000
Base Rate Initial Applicable Margin ABL Facility [Domain]
Long-Term Borrowings [Line Items]
Basis spread on variable rate	2.50%	2.75%
London Interbank Offered Rate (LIBOR) Term Loan Facility [Domain]
Long-Term Borrowings [Line Items]
Basis spread on variable rate	3.50%	3.75%
Term Loan Facility
Long-Term Borrowings [Line Items]
Maximum borrowing capacity	$ 300,000,000		300,000,000
Gross borrowings outstanding, carrying amount	$ 253,250,000		253,250,000	253,250,000
Schedule of Future Payments of the Term Loan Facility
Debt Instrument, Interest Rate Terms	0.01
ABL Facility
Long-Term Borrowings [Line Items]
Maximum borrowing capacity	$ 400,000,000		$ 400,000,000
ABL Facility, unused capacity, commitment fee percentage			10.00%
Credit facility, amount outstanding	0		$ 0	$ 0
Schedule of Future Payments of the Term Loan Facility
ABL Facility, covenant terms, minimum remaining borrowing capacity	$ 30,000,000		$ 30,000,000