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4. Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Nov. 01, 2015
Feb. 01, 2015
4. Property, Plant and Equipment (Details) [Line Items]    
Construction in Progress, Gross $ 1,222 $ 3,477
Enterprise Resource Planning (ERP) [Member]    
4. Property, Plant and Equipment (Details) [Line Items]    
Construction in Progress, Gross 233  
Various Other Projects to Enhance Facilities and Operations [Member]    
4. Property, Plant and Equipment (Details) [Line Items]    
Construction in Progress, Gross $ 989