Basis of Presentation - Additional Information (Details)		3 Months Ended	6 Months Ended
	Feb. 03, 2019 USD ($)	Aug. 04, 2018 USD ($)	Aug. 03, 2019 USD ($) Segment RenewalOption	Aug. 04, 2018 USD ($)	Feb. 02, 2019 USD ($)
Accounting Policies [Line Items]
Number of reportable segments | Segment			1
Number of operating segments | Segment			2
Corporate restructuring		$ 1,570,000		$ 1,630,000
Impairment of long-lived assets			$ 0	0
Right-of-use assets	$ 214,100,000		200,480,000
Lease liabilities	254,500,000		238,760,000
Sale-leaseback transaction, deferred gain	10,300,000		10,300,000
Cumulative-effect adjustment to opening balance of retained earnings	5,300,000		$ 5,300,000
Write-off of initial direct costs	1,200,000
Impairment of right-of-use asset	3,800,000
Amortization of deferred gain on sale-leaseback	$ 1,500,000			733,000
Sale-leaseback transaction, lease term			20 years
Operating lease, option to extend			Renewal options were not considered for the Company’s corporate headquarter and distribution center lease, which was entered into in 2006 and was for an initial 20-year term.
Store
Accounting Policies [Line Items]
Operating lease, option to extend			The Company’s store leases typically contain options that permit renewals for additional periods of up to five years each. In general, for store leases with an initial term of 10 years or more, the options to extend are not considered reasonably certain at lease commencement. For stores leases with an initial term of 5 years, the Company evaluates each lease independently and, only when the Company considers it reasonably certain that it will exercise an option to extend, will the associated payment of that option be included in the measurement of the right-of-use asset and lease liability.
Operating lease renewal term			5 years
Store | Maximum
Accounting Policies [Line Items]
Operating lease renewal term			5 years
Operating lease initial term			10 years
Store | Minimum
Accounting Policies [Line Items]
Operating lease initial term			5 years
Corporate Headquarter
Accounting Policies [Line Items]
Operating lease renewal term			5 years
Operating lease initial term			20 years
Number of renewal options | RenewalOption			6
Domain Name (dxl.com)
Accounting Policies [Line Items]
Definite-lived intangible assets, carrying value					$ 1,200,000
CEO Transition Costs
Accounting Policies [Line Items]
Corporate restructuring				$ 190,228