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Derivative Instruments (Details)
number in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Nov. 03, 2018
USD ($)
Oct. 28, 2017
USD ($)
Nov. 03, 2018
USD ($)
Oct. 28, 2017
USD ($)
Feb. 03, 2018
USD ($)
Fuel [Member]          
Derivative [Line Items]          
Derivative, Nonmonetary Notional Amount 5,700   5,700   3,600
Energy Related Derivative [Member]          
Derivative Liability [Abstract]          
Derivative, Fair Value, Net $ 850   $ 850   $ 390
Energy Related Derivative [Member] | Other Nonoperating Income (Expense) [Member]          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain (Loss) on Sale of Commodity Contracts 154 $ (180) 279 $ (678)  
Unrealized Gain (Loss) on Commodity Contracts (102) 611 460 961  
Derivative, Gain (Loss) on Derivative, Net 52 $ 431 739 $ 283  
Energy Related Derivative [Member] | Other Current Assets [Member]          
Derivative Asset [Abstract]          
Derivative Asset, Current 1,080   1,080   312
Energy Related Derivative [Member] | Other Assets [Member]          
Derivative Asset [Abstract]          
Derivative Asset 452   452   262
Energy Related Derivative [Member] | Accrued Operating Expenses [Member]          
Derivative Liability [Abstract]          
Derivative Liability, Current (240)   (240)   (77)
Energy Related Derivative [Member] | Other Liabilities [Member]          
Derivative Liability [Abstract]          
Derivative Liability $ (442)   $ (442)   $ (107)