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Note 6 - Restructuring Charges (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Aug. 28, 2016
Aug. 30, 2015
May 31, 2015
Aug. 28, 2016
Aug. 30, 2015
Feb. 29, 2004
Nelco Technology Zhuhai FTZ Ltd [Member]            
Proceeds from Sale of Property, Plant, and Equipment     $ 2,026,000      
Business Exit Costs $ 0 $ 38,000   $ 0 $ 75,000  
Gain (Loss) on Disposition of Property Plant Equipment       0    
New England Laminates Co Inc [Member]            
Business Exit Costs $ 23,000 $ 53,000   93,000 140,000  
Real Estate Held-for-sale           $ 0
Proceeds from Sale of Property, Plant, and Equipment       $ 2,026,000