Summary of Significant Accounting Policies - Additional Information (Details)			3 Months Ended	12 Months Ended
	Feb. 03, 2019 USD ($)	Dec. 26, 2018 USD ($)	Feb. 02, 2019 USD ($) Store shares	Feb. 02, 2019 USD ($) Store Segment shares	Feb. 03, 2018 USD ($) shares	Feb. 03, 2017 USD ($)	Jan. 28, 2017 USD ($)	Dec. 31, 2006
Accounting Policies [Line Items]
Number of reportable segments | Segment				1
Number of operating segments | Segment				2
Amortization expense of intangibles				$ 321,000	$ 400,000		$ 400,000
Direct response advertising costs, amortization period				1 year
Direct response costs deferred			$ 0	$ 0	0
Stock compensation expense				2,004,000	1,636,000		1,256,000
Total grant-date fair value of options vested				2,000,000	1,800,000		2,900,000
Impairment of assets				4,579,000	4,095,000		376,000
Impairment charge				3,100,000	4,100,000	$ 400,000
Retained earnings (accumulated deficit)			(153,534,000)	(153,534,000)	(139,285,000)
Accumulated other comprehensive income (loss)			(6,183,000)	$ (6,183,000)	(6,243,000)
Sale-leaseback transaction, lease term description				The Company has also been amortizing a deferred gain from the sale-leaseback of its corporate office over the initial 20-year lease term.
Sale-leaseback transaction, lease term				20 years				20 years
Amortization of deferred gain on sale-leaseback				$ 1,465,000	$ 1,465,000		1,466,000
Sale-leaseback transaction, deferred gain			10,300,000	10,300,000
Subsequent Event
Accounting Policies [Line Items]
Right-of-use assets	$ 217,000,000
Lease liabilities	255,000,000
Elimination of lease related assets and liabilities as adjustment to right-of-use assets	$ 38,000,000
ASU 2018-02
Accounting Policies [Line Items]
Retained earnings (accumulated deficit)			(700,000)	(700,000)
Accumulated other comprehensive income (loss)			$ 700,000	$ 700,000
Unvested time-based restricted stock
Accounting Policies [Line Items]
Dilutive shares | shares				30,000	36,666
Deferred Stock
Accounting Policies [Line Items]
Shares excluded from computation of basic earnings per share | shares			204,040	204,040	115,457
Time-Vested Awards
Accounting Policies [Line Items]
Unrecognized stock compensation cost			$ 2,000,000	$ 2,000,000
Unrecognized stock compensation cost weighted average recognition period				32 months
Selling, General and Administrative Expenses
Accounting Policies [Line Items]
Advertising expenses				$ 24,400,000	$ 29,500,000		$ 18,200,000
Customer Lists
Accounting Policies [Line Items]
Gross carrying amount of intangibles			7,700,000	7,700,000	7,700,000
Casual Male Trademark
Accounting Policies [Line Items]
Accumulated amortization of intangibles			7,700,000	7,700,000	7,400,000
Amortization expense of intangibles				292,000
Technology Projects
Accounting Policies [Line Items]
Impairment charge					$ 1,900,000
Rochester Trademark
Accounting Policies [Line Items]
Impairment charge			$ 1,500,000	$ 1,500,000
dxl.com Domain
Accounting Policies [Line Items]
Rights purchase price		$ 1,000,000
Transaction costs incurred to purchase rights		$ 150,000
Minimum
Accounting Policies [Line Items]
Credit card and debit card receivables from banks settlement period				2 days
Maximum
Accounting Policies [Line Items]
Credit card and debit card receivables from banks settlement period				4 days
DXL Stores | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			216	216
Casual Male XL Retail and Outlet Stores | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			66	66
Casual Male XL outlets
Accounting Policies [Line Items]
Number of stores | Store			30	30
DXL Outlets
Accounting Policies [Line Items]
Number of stores | Store			15	15
Rochester Clothing Stores | UNITED STATES
Accounting Policies [Line Items]
Number of stores | Store			5	5
Rochester Clothing Stores | UNITED KINGDOM
Accounting Policies [Line Items]
Number of stores | Store			1	1
Rochester Clothing Stores | Canada
Accounting Policies [Line Items]
Number of stores | Store			2	2