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Related party transactions - FreshRealm (Details) - USD ($) $ in Thousands			1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 03, 2021	Feb. 02, 2021	Jul. 31, 2021	Jul. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Feb. 27, 2019
Related party
Loss on reserve					$ (6,130)	$ 37,322
Proceeds received for repayment of related party loan					6,000		$ 1,154
Goodwill					28,653	28,568
RFG
Related party
Goodwill					24,700	24,700
FreshRealm
Related party
VIE ownership (as a percent)		37.00%
Impairment of investment in FreshRealm				$ 2,800
Impairment of investment FreshRealm percentage				100.00%
Notes receivable from FreshRealm						$ 34,500	$ 34,500	$ 34,500
Loss on reserve				$ 34,500
Proceeds received for repayment of related party loan			$ 6,000
Loan write-off					$ 34,200
FreshRealm | Promissory Notes
Related party
Notes receivable from FreshRealm	$ 5,000
Loan payoff amount	$ 6,000
Proceeds received for repayment of related party loan			$ 6,000

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