Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended	12 Months Ended
	Apr. 29, 2017 USD ($)	Feb. 02, 2019 USD ($) Supplier shares	Feb. 03, 2018 USD ($) Supplier shares	Jan. 28, 2017 USD ($) Supplier shares
Summary Of Significant Accounting Policies [Line Items]
Cash overdraft		$ 5,115,000	$ 7,947,000
Maturity of cash and cash equivalents		Three months or less
Write-downs of intangible assets		$ 20,000	32,000	$ 6,000
Aggregate amortization expense of intangible assets		115,000	126,000	142,000
Amortization of deferred financing costs		690,000	487,000	328,000
Writeoff of unamortized deferred financing costs			1,542,000
Payments of Financing Costs		605,000	3,406,000	1,519,000
Advertising expenses, including Internet advertising expenses		$ 16,267,000	$ 15,563,000	$ 12,869,000
Options, unvested restricted stock and restricted stock units | shares		1,045,000	1,398,000	1,232,000
Average shares outstanding— Diluted | shares		13,889,000	13,788,000	13,702,000
Company paid cash dividends		$ 0	$ 0	$ 0
Dividends forfeited		7,000	16,000	18,000
Interest paid, including payments made on interest rate swap agreement		4,108,000	3,734,000	3,063,000
Income tax refunds, net of payments		$ 263,000	$ 4,141,000	$ 324,000
No single provider | Supplier		0	0	0
Restatement Adjustment | Cumulative-Effect Adjustment, Gift Card Breakage Income Over Redemption
Summary Of Significant Accounting Policies [Line Items]
Revenue	$ 800,000
Supplier Concentration Risk | Cost of Goods
Summary Of Significant Accounting Policies [Line Items]
Percentage of contribution		20.00%	20.00%	20.00%
Pro Forma
Summary Of Significant Accounting Policies [Line Items]
Average shares outstanding— Diluted | shares		14,150,000	13,806,000	13,720,000
Grow New Jersey Assistance Program (Grow NJ)
Summary Of Significant Accounting Policies [Line Items]
Government incentive assistance program award period		10 years
Revolving Credit Facility | Term Loan
Summary Of Significant Accounting Policies [Line Items]
Writeoff of unamortized deferred financing costs			$ 1,542,000
Payments of Financing Costs		$ 605,000	3,406,000
Minimum | New Lease Liabilities | ASU No. 2016-02
Summary Of Significant Accounting Policies [Line Items]
Impact on balance sheet and retained earnings due to adoption of topic 842		150,000,000
Minimum | ROU Assets | ASU No. 2016-02
Summary Of Significant Accounting Policies [Line Items]
Impact on balance sheet and retained earnings due to adoption of topic 842		125,000,000
Maximum | New Lease Liabilities | ASU No. 2016-02
Summary Of Significant Accounting Policies [Line Items]
Impact on balance sheet and retained earnings due to adoption of topic 842		170,000,000
Maximum | ROU Assets | ASU No. 2016-02
Summary Of Significant Accounting Policies [Line Items]
Impact on balance sheet and retained earnings due to adoption of topic 842		$ 145,000,000
Furniture And Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Service lives of assets		5 years
Furniture And Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Service lives of assets		10 years
Retail Locations
Summary Of Significant Accounting Policies [Line Items]
Impairment write-downs of property and equipment		$ 3,117,000	$ 5,743,000	$ 2,382,000