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Note 12 - Discontinued Operations (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 04, 2018
Feb. 28, 2021
Mar. 01, 2020
Mar. 03, 2019
Restructuring Charges, Total   $ 1,570
Facility Closing [Member]        
Restructuring Charges, Total   1,570 0 0
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member]        
Restructuring Charges, Total   427    
Restructuring Reserve, Ending Balance   8 432  
Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member] | Facility Closing [Member]        
Restructuring Charges, Total   427 833 374
Discontinued Operations [Member] | Consolidation of Nelco Products, Inc. and Neltec, Inc. [Member]        
Restructuring Charges, Total   $ 0 $ 108 $ 262
Electronics Business [Member] | Discontinued Operations, Disposed of by Sale [Member]        
Disposal Group, Including Discontinued Operation, Consideration $ 145,000      
Proceeds from Divestiture of Businesses 124,156      
Disposal Group, Including Discontinued Operation, Transaction Costs and Taxes 7,657      
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation 13,187      
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total $ 102,145      
Disposal Group, Including Discontinued Operation, Consideration Allocation, Percent 2.00%      
Disposal Group, Including Discontinued Operation, Blended Tax Rate, Percent   24.70% (26.40%) 12.00%
Electronics Business [Member] | Discontinued Operations, Disposed of by Sale [Member] | SINGAPORE        
Disposal Group, Including Discontinued Operation, Consideration Allocation, Percent 82.00%      
Electronics Business [Member] | Discontinued Operations, Disposed of by Sale [Member] | FRANCE        
Disposal Group, Including Discontinued Operation, Consideration Allocation, Percent 16.00%