Summary of Significant Accounting Policies - Additional Information (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($)	Nov. 02, 2019 USD ($)	Jan. 30, 2021 USD ($) Store Segment RenewalOption shares	Feb. 01, 2020 USD ($) shares	Feb. 02, 2019 USD ($) shares
Accounting Policies [Line Items]
Number of reportable segments | Segment			1
Number of operating segments | Segment			3
Short-term notes			$ 3,500,000
Accrue interest rate, percentage			4.00%
Direct response advertising costs, amortization period			1 year
Direct response costs deferred			$ 0	$ 0
Shares excluded from computation of basic and diluted earnings per share | shares			159,000	408,000	497,000
Stock compensation expense			$ 1,446,000	$ 1,922,000	$ 2,004,000
Total grant-date fair value of options vested			1,500,000	3,000,000.0	2,000,000.0
Impairment charge			14,800,000	900,000	$ 4,600,000
Impairment of operating lease right-of-use asset			10,700,000	$ 700,000
Operating lease right-of-use asset impairment charge offset amount			2,600,000
Non-cash gain on closing of retail stores			3,100,000
Short term leases			$ 0
Operating lease, option to extend			Renewal options are not included in the lease term for automobile and equipment leases because they are not considered reasonably certain of being exercised at lease commencement. Renewal options were not considered for the Company’s corporate headquarters and distribution center lease, which was entered into in 2006 and was for an initial 20-year term
ASU No. 2016-13
Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted			true
Change in accounting principle, accounting standards update, adoption date			May 02, 2020
Change in accounting principle, accounting standards update, immaterial effect			true
ASU No. 2018-13
Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted			true
Change in accounting principle, accounting standards update, adoption date			May 02, 2020
Change in accounting principle, accounting standards update, immaterial effect			true
ASU No. 2019-12
Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date			May 02, 2020
Change in accounting principle, accounting standards update, immaterial effect			true
Change in accounting principle, Accounting standards update, early adoption			true
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
Corporate Headquarter
Accounting Policies [Line Items]
Operating lease renewal term			5 years
Operating lease initial term			20 years
Number of renewal options | RenewalOption			6
Store Assets
Accounting Policies [Line Items]
Impairment charge			$ 4,100,000
Unvested time-based restricted stock
Accounting Policies [Line Items]
Dilutive shares | shares					30,000
Performance Stock Units
Accounting Policies [Line Items]
Shares excluded from computation of basic and diluted earnings per share | shares			720,000,000	720,000,000
Deferred Stock
Accounting Policies [Line Items]
Shares excluded from computation of basic and diluted earnings per share | shares			435,568,000	295,604,000	204,040,000
Time-Vested Awards
Accounting Policies [Line Items]
Unrecognized stock compensation cost			$ 2,100,000
Unrecognized stock compensation cost weighted average recognition period			27 months
Rochester Clothing Store Located in London
Accounting Policies [Line Items]
Total charge recognized in exiting operations in England				$ 1,700,000
Accumulated foreign currency translation adjustment, recognized		$ 800,000		800,000
Selling, General and Administrative Expenses
Accounting Policies [Line Items]
Advertising expenses			$ 11,900,000	22,900,000	$ 24,400,000
Domain Name (dxl.com)
Accounting Policies [Line Items]
Indefinite-lived intangible assets, carrying value					1,200,000
Rochester Trademark
Accounting Policies [Line Items]
Impairment charge					1,500,000
Accounts Payable
Accounting Policies [Line Items]
Short-term notes			$ 400,000
Minimum
Accounting Policies [Line Items]
Credit card and debit card receivables from banks settlement period			2 days
Minimum | Store
Accounting Policies [Line Items]
Operating lease initial term			5 years
Maximum
Accounting Policies [Line Items]
Credit card and debit card receivables from banks settlement period			4 days
Short-term debt, terms			one-year
Maximum | Store
Accounting Policies [Line Items]
Operating lease renewal term			5 years
Operating lease initial term			10 years
Revolving Credit Facility
Accounting Policies [Line Items]
Proceeds from credit facility			$ 64,226,000	$ 152,336,000	$ 156,424,000
Impact of COVID-19 | Revolving Credit Facility
Accounting Policies [Line Items]
Proceeds from credit facility	$ 30,000,000.0
Canada
Accounting Policies [Line Items]
Number of stores | Store			2
DXL Stores | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			226
Casual Male XL Retail and Outlet Stores | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			46
Casual Male XL outlets
Accounting Policies [Line Items]
Number of stores | Store			22
DXL Outlets | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			17
DXL Outlets | Canada
Accounting Policies [Line Items]
Number of stores | Store			2