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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 |

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