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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jan. 31, 2016
Jan. 31, 2016
Feb. 01, 2015
Feb. 02, 2014
Increase in net deferred tax liabilities $ 100      
A one-time deferred tax expense $ 100 $ 31    
Tax expense for interest or penalties   $ 0 $ 0 $ 0
Federal [Member]        
Open for tax examination   2012    
State [Member]        
Open for tax examination   2011