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Income Taxes (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Aug. 01, 2020
Aug. 03, 2019
Aug. 01, 2020
Aug. 03, 2019
Aug. 04, 2018
Income Tax [Line Items]          
Income before income taxes $ 32,642,000 $ 37,541,000 $ (39,411,000) $ 63,697,000  
Income tax expense (benefit) $ 3,061,000 $ 8,710,000 $ (18,410,000) $ 9,204,000  
Effective tax rate 9.40% 23.20% 46.70% 14.40%  
Accrual for uncertain tax, interest or penalties $ 0 $ 0 $ 0 $ 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