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Income Taxes (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 03, 2019
Aug. 04, 2018
Aug. 03, 2019
Aug. 04, 2018
Income Tax [Line Items]        
Income before income taxes $ 37,541,000 $ 31,405,000 $ 63,697,000 $ 57,190,000
Income tax expense $ 8,710,000 $ 6,342,000 $ 9,204,000 $ 10,323,000
Effective tax rate 23.20% 20.20% 14.40% 18.10%
Accrual for uncertain tax, interest or penalties $ 0   $ 0  
Minimum        
Income Tax [Line Items]        
State income taxes, statute of limitations period (years)     3 years  
Maximum        
Income Tax [Line Items]        
State income taxes, statute of limitations period (years)     4 years