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12. Income Taxes (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 29, 2017 | Oct. 30, 2016 | Oct. 29, 2017 | Oct. 30, 2016 | Jan. 29, 2017
Income Tax Disclosure [Abstract] |  |  |  |  |
Income Tax Expense (Benefit) | $ 4,006,000 | $ 3,453,000 | $ 10,574,000 | $ 7,737,000 |
Effective Income Tax Rate Reconciliation, Percent | 35.70% | 34.80% | 34.90% | 35.10% |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 129,000 |  | $ 129,000 |  | $ 201,000

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