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9. Intangible Assets (Details) - USD ($)
3 Months Ended 6 Months Ended
Jul. 31, 2016
May. 01, 2016
May. 03, 2015
Jan. 29, 2017
9. Intangible Assets (Details) [Line Items]        
Amortization of Intangible Assets   $ 1,654,000 $ 0  
Scenario, Forecast [Member]        
9. Intangible Assets (Details) [Line Items]        
Amortization of Intangible Assets $ 815,000     $ 335,000