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Note 2 - Impairment of GreenLine Trademark (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 28, 2016
Mar. 01, 2015
Feb. 28, 2016
Mar. 01, 2015
May. 31, 2015
[1]
GreenLine Trademark [Member]          
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 34,000        
Indefinite-Lived Trademarks 2,000   $ 2,000    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) 34,000 34,000  
Indefinite-Lived Trademarks $ 14,428   $ 14,428   $ 48,428
[1] Derived from audited financial statements.