Income Taxes (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 29, 2017	Apr. 30, 2016	Feb. 03, 2018	Jan. 28, 2017	Jul. 10, 2015
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards				$ 326,000,000
State net operating loss carryforwards				$ 262,000,000
Increase (Decrease) in Accrued Taxes Payable [Abstract]
Non-cash tax charge relating to changes in long-term deferred tax liability	$ 197,000	$ 197,000
Shareholder Rights Plan [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01			$ 0.01
one one-thousandth of a share of Preferred Stock unit price					$ 9.00
Related party, ownership interest in Company, percentage					4.99%
Scenario, Forecast [Member]
Increase (Decrease) in Accrued Taxes Payable [Abstract]
Deferred Income Tax Expense (Benefit), Remainder of Year			$ 591,000
2023 - Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Federal NOLs, expiration date				Feb. 03, 2024
2036 - Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Federal NOLs, expiration date				Jan. 31, 2037