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Note 9 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
May 28, 2017
May 29, 2016
Feb. 26, 2017
Feb. 28, 2016
Mar. 02, 2014
Effective Income Tax Rate Reconciliation, Percent (194.30%) 13.90%      
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount $ 688        
Nelco Products Pte Ltd [Member]          
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount $ 2,000   $ 6,800 $ 61,000  
SINGAPORE          
Deferred Income Taxes Settlement, Repatriation of Foreign Earnings         $ 63,958