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10. Income Taxes (Details) - USD ($)
3 Months Ended
Apr. 30, 2017
May 01, 2016
Jan. 29, 2017
Income Tax Disclosure [Abstract]      
Income Tax Expense (Benefit) $ 2,334,000 $ 1,397,000  
Effective Income Tax Rate Reconciliation, Percent 33.00% 35.80%  
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 203,000   $ 201,000