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Investment in Non-public Company - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Oct. 29, 2014
Jul. 15, 2014
Feb. 15, 2011
Feb. 24, 2019
Feb. 25, 2018
Feb. 24, 2019
Feb. 25, 2018
Dividend income       $ 413,000 $ 413,000 $ 1,238,000 $ 1,238,000
Senior A Preferred Stock              
Dividend percentage rate   7.50%          
Windset              
Investment ownership percentage   26.90%   26.90%   26.90%  
Dividend income       $ 412,500 412,500 $ 1,200,000 1,200,000
Windset | Other Income              
Change in market value of company's investment       0 $ 0 1,600,000 $ 2,200,000
Curation Foods | Windset              
Payments to acquire investments   $ 11,000,000          
Time frame to be paid after anniversary   90 days          
Liquidation value of preferred shares       20,100,000   20,100,000  
Curation Foods | Windset | Junior Preferred Shares              
Preferred stock investment, dividends declared       0   0  
Liquidation value of preferred shares       5,100,000   5,100,000  
Curation Foods | Windset | Senior A Preferred Stock              
Liquidation value of preferred shares       $ 15,000,000   $ 15,000,000  
Curation Foods | Windset | Senior A Preferred Stock              
Investment In non-public company shares (in shares)     150,000        
Payments to acquire investments     $ 15,000,000        
Curation Foods | Windset | Common Stock              
Investment In non-public company shares (in shares)   68 201        
Payments to acquire investments     $ 201        
Curation Foods | Windset | Junior Preferred Shares              
Investment In non-public company shares (in shares)   51,211          
Curation Foods | Windset | Senior B Preferred Stock              
Investment In non-public company shares (in shares) 70,000            
Payments to acquire investments $ 7,000,000            
Dividend percentage rate 7.50%