Government Incentives - Additional Information (Details) - Grow New Jersey Assistance Program (Grow NJ)	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 29, 2017 USD ($)	May 31, 2016 USD ($)	Oct. 28, 2017 USD ($)	Oct. 29, 2016 USD ($)	Oct. 28, 2017 USD ($) Job	Oct. 29, 2016 USD ($)	Jan. 28, 2017 USD ($)	Jan. 30, 2016 USD ($)
Government Incentive Assistance Program [Line Items]
Income tax credits granted from state incentive package			$ 40,000,000		$ 40,000,000
Transferrable income tax credit period					10 years
Government incentive assistance program minimum capital investment					$ 20,000,000
Government incentive assistance program maximum award limit					$ 40,000,000
Government incentive assistance program award period					10 years
Project development, eligible amount per new full time job					$ 7,000
Government incentive assistance program annual award limit					$ 4,000,000
Award compliance period					5 years
Award Compliance Description					After the end of the ten-year Grow NJ award earnings period there is a five-year compliance period during which the Company must maintain the average of its annual eligible jobs certified during the preceding ten years or a pro-rata amount up to one-tenth of the previously awarded income tax credits would be subject to recapture and repayment to the State of New Jersey annually during the five-year compliance period.
Agreement to sell annual income tax credits awarded, Description					75% or more
Cash proceeds net of costs from government incentive assistance program	$ 3,251,000	$ 3,600,000
Income tax credits earned from state incentive package							$ 3,621,000	$ 4,000,000
Cost reduction related to award			718,000	$ 695,000	$ 2,155,000	$ 2,462,000
Cost reduction related to award amount recognized in income statement			675,000	670,000	2,152,000	2,363,000
Offset to cost of goods sold			476,000	476,000	1,554,000	1,675,000
Offset to selling general and administrative expenses			199,000	$ 194,000	598,000	$ 688,000
Reduction in inventory overhead			$ 813,000		$ 813,000		$ 810,000
Minimum
Government Incentive Assistance Program [Line Items]
Government incentive assistance program number of eligible jobs | Job					100