Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal year									364 days	371 days	364 days
Number of weeks in fiscal year	P13W				P14W				P52W	P53W	P52W
Purchasing and receiving costs									$ 10,299	$ 10,660	$ 9,557
Marketing and advertising costs									4,561	4,530	3,723
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue to be recognized from remaining performance obligations	$ 68								$ 68
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years								2 years
Revenue	$ 157,619	$ 131,714	$ 150,799	$ 156,505	$ 192,716	$ 150,212	$ 148,949	$ 156,343	$ 596,637	648,220	666,213
Net receivables due from customers under ValuePay	81,763				96,559				81,763	96,559
Reserves for estimated uncollectible amounts	8,533				6,008				8,533	6,008
Inventories
Inventory obsolescence provision write downs									5,149	3,757	5,589
Fair Value of Financial Instruments
Credit facilities	71,420				73,899				71,420	73,899
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Unrecognized compensation expense outstanding for nonemployee share-based payment awards			$ 0
Transferred over Time [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue									35	60	$ 86
ValuePay [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Net receivables due from customers under ValuePay	$ 74,787				$ 88,452				$ 74,787	$ 88,452
Supplier Concentration Risk [Member] | Sales Revenue, Net [Member]
Inventories
Percentage of net sales purchased from one vendor									14.00%	15.00%	16.00%