Long-Term Debt - Additional Information (Details) - USD ($)				3 Months Ended		4 Months Ended
	Feb. 01, 2018	Jun. 06, 2017	Mar. 25, 2016	May 05, 2018	Apr. 29, 2017	Jan. 31, 2015	Apr. 07, 2017
Debt Instrument [Line Items]
Payments of Financing Costs				$ 80,000	$ 6,000
Minimum excess availability on Combined Loan Cap				10.00%
Minimum amount excess availability on Combined Loan Cap				$ 7,000,000
Sale and leaseback, transaction date				June 6, 2017
Sale and leaseback transaction, financing agreement period		3 years
Sale and leaseback, description of assets				certain furniture, fixtures and software
Monthly payments for first 24 months		$ 123,000
Monthly payments under leaseback arrangement for 25 to 36 months		48,000
Sale and leaseback, payment terms				Monthly payments under the leaseback arrangement are $123,000 for the first 24 months and $48,000 for months 25 to 36.
Principal outstanding				$ 2,287,000
Equipment Loan
Debt Instrument [Line Items]
Principal outstanding under equipment note				$ 5,284,000	8,562,000
Equipment financing arrangement period				5 years
Percentage of interest on equipment financing arrangement						3.38%
Monthly payments for equipment financing arrangement						$ 272,000
Debt instrument maturity date						Dec. 31, 2019
Term Loan
Debt Instrument [Line Items]
Loan available for borrowing	$ 25,000,000
Line of credit maturity date	Jan. 31, 2023
Proceeds from long-term debt	$ 22,500,000
Proceeds from loan	3,600,000
Additional loan available for borrowing	$ 2,500,000
Period of delivery to the lender	45 days
Minimum excess availability on Combined Loan Cap	10.00%
Minimum amount excess availability on Combined Loan Cap	$ 7,000,000
Credit Facility Description of Variable Rate Basis				The interest rate on the Term Loan is equal to a LIBOR rate plus 9.0%.
Debt Instrument, frequency of periodic payment				Quarterly
Debt instrument, payment terms				The Term Loan can be prepaid at the Company's option subject to certain restrictions and subject to a prepayment premium as follows: 1) if the prepayment occurs on or prior to the second anniversary of the Closing Date, the greater of a) interest on the prepayment that would otherwise have been paid with the 24 month period following the Closing Date minus actual interest payments made through the prepayment date and b) 2% of the prepayment and 2) 2% of the prepayment amount if paid between the second and third anniversary of the Closing Date.
Debt Instrument, frequency of periodic payment, commencing date				Jul. 31, 2018
Dividends payment or share repurchases prohibition period				3 years
Deferred financing costs				$ 2,460,000
Principal outstanding				$ 22,500,000
Proceeds from equipment financing transaction		$ 3,401,000
Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin rate	9.00%
Term Loan | Maximum
Debt Instrument [Line Items]
Loan available for borrowing	$ 25,000,000
Term Loan | Minimum
Debt Instrument [Line Items]
Debt instruments, periodic payments, principal	312,500
Prior Term Loan Agreement
Debt Instrument [Line Items]
Line of credit maturity date			Mar. 25, 2021
Repayment of existing balance	22,999,000
Payments of Financing Costs	$ 3,226,000
Minimum excess availability on Combined Loan Cap							10.00%
Minimum amount excess availability on Combined Loan Cap							$ 10,000,000
Credit Facility Description of Variable Rate Basis				The interest rate on the Prior Term Loan was equal to a LIBOR rate (with a 1.0% LIBOR floor) plus 7.5%.
Long-term debt			$ 32,000,000
Additional reserve against availability under credit facility that will be reduced for prepayment of term loan							$ 5,000,000
Deferred financing costs				$ 4,557,000
Deferred financing costs				$ 1,542,000
Principal outstanding					$ 29,600,000
Prior Term Loan Agreement | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin rate			7.50%
Debt instrument, interest rate			1.00%
Prior Term Loan Agreement | Minimum
Debt Instrument [Line Items]
Debt instruments, periodic payments, principal			$ 800,000