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Income Taxes - Income Tax (Benefit) Expense Components (Details)
 3 Months Ended 12 Months Ended
Feb. 03, 2018
USD ($)
Dec. 31, 2018
Feb. 03, 2018
USD ($)
item
Dec. 31, 2017
Jan. 28, 2017
USD ($)
Jan. 30, 2016
USD ($)
Income Tax            
Benefits not recognized due to uncertainty $ 0   $ 0      
Work opportunity tax benefits not recognized due to uncertainty 0   $ 0      
Number of states in which ability to utilize tax credits is no longer more likely than not | item     1      
Credits carry back period     1 year      
Credits carry forward period     20 years      
Income tax benefit related to federal and state tax credits     $ 1,300,000   $ 1,800,000 $ 1,200,000
Federal statutory tax rate     33.70% 35.00%    
Reduction in income tax expense due to Tax Cuts and Jobs Act tax reform legislation     $ 300,000      
Reduction of net deferred tax assets $ 1,900,000   $ 1,925,000      
Forecast            
Income Tax            
Federal statutory tax rate   21.00%