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Note 2 - Acquisition of O (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 01, 2017
Nov. 25, 2018
Nov. 25, 2018
Nov. 26, 2017
May 27, 2018
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability     $ (900,000)  
O Olive & Vinegar [Member]          
Payments to Acquire Businesses, Gross $ 2,500,000        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 7,500,000        
Cumulative EBITDA Amount         $ 6,000,000
Business Combination, Contingent Consideration, Liability, Total   $ 3,100,000 3,100,000   4,000,000
O Olive & Vinegar [Member] | Selling, General and Administrative Expenses [Member]          
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability   $ 900,000 $ 900,000    
O Olive & Vinegar [Member] | Initial Potential Payment Limit [Member]          
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High         4,600,000
O Olive & Vinegar [Member] | Additional Potential Payment Limit [Member]          
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High         $ 2,900,000