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3. Property, Plant and Equipment (Details) - Property, Plant and Equipment (USD $)
In Thousands, unless otherwise specified
Aug. 04, 2013
Feb. 03, 2013
Property, Plant and Equipment [Line Items]    
Depreciable property at cost $ 55,645 $ 54,936
Less accumulated depreciation 35,702 34,559
Total depreciable property, net 19,943 20,377
Land 1,152 1,152
Construction-in-progress 2,252 1,300
Property, plant and equipment, net 23,347 22,829
Building and Building Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost 23,742 23,680
Computer Software and Hardware [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost 22,348 22,203
Machinery and Equipment [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost 4,067 3,663
Leasehold Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost 2,727 2,698
Furniture and Fixtures [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost 2,068 1,989
Property, Plant and Equipment, Other Types [Member]
   
Property, Plant and Equipment [Line Items]    
Depreciable property at cost $ 693 $ 703