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Note 5 - Intangible Assets - Other Intangible Assets (Details) - USD ($)
12 Months Ended
May 27, 2018
May 28, 2017
May 29, 2016
Balance $ 22,811,000 $ 21,396,000 $ 56,263,000
Impairment during the period 0 0 (34,000,000)
Amortization expense (969,000) (885,000) (867,000)
Balance 21,842,000 22,811,000 21,396,000
Finite-lived Intangible Assets Acquired   2,300,000  
Trademarks and Trade Names [Member]      
Balance 16,028,000 14,428,000 48,428,000
Impairment during the period     (34,000,000)
Amortization expense
Balance 16,028,000 16,028,000 14,428,000
Finite-lived Intangible Assets Acquired   1,600,000  
Customer Relationships [Member]      
Balance 6,783,000 6,968,000 7,835,000
Impairment during the period    
Amortization expense (969,000) (885,000) (867,000)
Balance $ 5,814,000 6,783,000 $ 6,968,000
Finite-lived Intangible Assets Acquired   $ 700,000