Stockholders' Equity - Stock warrants (Details) - USD ($)			12 Months Ended
	Jan. 30, 2019	Aug. 03, 2018	Feb. 02, 2019	Feb. 03, 2018
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			4,085,803	957,806
Exercise price of warrants			$ 1.32	$ 3.81
Initial term		7 years
Fair value of stock warrants		$ 1,200,000
Private placement financing
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				326,695
Exercise price of warrants				$ 4.22
Fair value of stock warrants				$ 700,000
Warrants exercisable start date				Mar. 05, 2018
Warrants exercisable end date				Aug. 17, 2024
Shares purchased				947,870
Share Price				$ 4,000
Cerberus Credit Facility
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				511,111
Exercise price of warrants				$ 2.25
Initial term				7 years
Fair value of stock warrants				$ 600,000
Term Loan and Junior Note Amounts				$ 11,500,000
Cove Street Capital, LLC, Large Stockholder | Private placement financing
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				59,241
Shares purchased				236,967
Share Price				$ 1,000
Cove Street Capital, LLC, Large Stockholder | Cerberus Credit Facility
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				311,111
Term Loan and Junior Note Amounts				$ 7,000,000
Henry Stupp, Chief Executive Officer, Director and Board Member | Cerberus Credit Facility
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				4,444
Term Loan and Junior Note Amounts				$ 100,000
Jess Ravich, Director and large stockholder | Private placement financing
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				237,834
Shares purchased				473,934
Share Price				$ 2,000
Jess Ravich, Director and large stockholder | Cerberus Credit Facility
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				195,556
Term Loan and Junior Note Amounts				$ 4,400,000
Robert Galvin, Chairman of the Board | Private placement financing
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				5,924
Shares purchased				23,697
Share Price				$ 100
Howard Siegel, President, Chief Operating Officer | Private placement financing
Class of Stock [Line Items]
Shares purchased				23,697
Share Price				$ 100
Other Investors | Private placement financing
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock				23,696
Shares purchased				189,575
Share Price				$ 800
Term Loan
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock		1,192,997
Exercise price of warrants		$ 0.45
Maximum borrowing capacity		$ 40,000,000
Junior Notes
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock		1,600,000
Exercise price of warrants		$ 0.50
Maximum borrowing capacity		$ 13,500,000
Additional Term Loan
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock	690,000
Exercise price of warrants	$ 0.76
Maximum borrowing capacity	$ 5,300,000
Initial term	7 years
Lenders
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			3,482,997
Term Loan and Junior Note Amounts			$ 58,750,000
Lenders | Term Loan Lenders, Unrelated Parties
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			1,192,997
Term Loan and Junior Note Amounts			$ 40,000,000
Lenders | Additional Term Loan Lenders, Unrelated Parties
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			690,000
Term Loan and Junior Note Amounts			$ 5,250,000
Lenders | Cove Street Capital, LLC, Large Stockholder
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			1,245,000
Term Loan and Junior Note Amounts			$ 9,000,000
Lenders | Jess Ravich, Board Member and Large Stockholder
Class of Stock [Line Items]
Warrants issued to purchase shares of common stock			355,000
Term Loan and Junior Note Amounts			$ 4,400,000
Lenders | Henry Stupp, Chief Executive Officer, Director and Board Member
Class of Stock [Line Items]
Term Loan and Junior Note Amounts			$ 100,000