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FreshRealm (Details) - USD ($)
$ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 15, 2018
Jan. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Oct. 31, 2018
Variable Interest Entity [Line Items]                  
Investment in unconsolidated entities     $ 12,860       $ 12,860   $ 24,805
Income (loss) from unconsolidated entities             (11,945) $ (3,399)  
Notes receivable from FreshRealm     30,743       30,743    
FreshRealm [Member]                  
Variable Interest Entity [Line Items]                  
Investment in unconsolidated entities     8,000       8,000   19,900
Net loss     (6,217)     $ (7,065) (24,966) $ (20,865)  
Income (loss) from unconsolidated entities $ (4,200) $ (2,700) (2,300) $ (2,700) $ (6,900)        
Notes receivable from FreshRealm     $ 30,700       $ 30,700   $ 9,000
FreshRealm [Member] | FreshRealm [Member]                  
Variable Interest Entity [Line Items]                  
VIE ownership (as a percent) 100.00% 37.00% 37.00%       37.00%   37.00%