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Related-Party Transactions (Details)	3 Months Ended		9 Months Ended		12 Months Ended
Related-Party Transactions (Details)	Jul. 31, 2020 USD ($) shares	Jul. 31, 2019 USD ($)	Jul. 31, 2020 USD ($) shares	Jul. 31, 2019 USD ($)	Oct. 31, 2013 USD ($) a	Oct. 31, 2019 USD ($)
Affiliate of WAM \| Limoneira Company Series B-2 Convertible Preferred Stock
Consolidated Statement of Operations
Shares of Series B-2 convertible preferred stock held (in shares) \| shares	9,300		9,300
Employees \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	$ 0		$ 0			$ 0
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	195,000	$ 190,000	585,000	$ 550,000
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Rental payments due from employees	0		0			0
Employees \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	0	0	0	0
Mutual water companies \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	0		0			473,000
Accounts Payable	79,000		79,000			11,000
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Mutual water companies \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	211,000	195,000	675,000	593,000
Cooperative association \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	0		0			0
Accounts Payable	48,000		48,000			35,000
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Cooperative association \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	353,000	302,000	1,246,000	1,158,000
Calavo \| Beneficial Owner
Balance Sheet
Receivable/Other from Related Parties	2,701,000		2,701,000			0
Other Assets	0		0			0
Accounts Payable	1,000		1,000			0
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	84,000	81,000	249,000	240,000
Other Income, Net	0	0	220,000	250,000
Dividends Paid	126,000	126,000	377,000	381,000
Calavo \| Beneficial Owner \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	4,724,000	2,519,000	6,296,000	3,062,000
Agribusiness Expense and Other	23,000	261,000	200,000	262,000
Third-party growers \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Third-party growers \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	0	6,000	0	386,000
Cadiz / Fenner / WAM \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	1,461,000		1,461,000			0
Accounts Payable	0		0			0
Payables to Related Parties	190,000		190,000			0
Other Long-Term Liabilities	1,372,000		1,372,000			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Area of land (in acres) \| a					670
Annual base rental per planted acre					$ 200
Percent of gross revenues paid as annual base rental					20.00%
Maximum annual base rental per planted acre					$ 1,200
Cadiz / Fenner / WAM \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	1,000	42,000	173,000	130,000
Colorado River Growers \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	297,000		297,000			376,000
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
Colorado River Growers \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	522,000	306,000
Agribusiness Expense and Other	0	0	5,337,000	3,841,000
YMIDD \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties	0		0			0
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
YMIDD \| Affiliated Entity \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	0	0	0	0
Agribusiness Expense and Other	0	0	86,000	85,000
FGF \| Co-venturer
Balance Sheet
Receivable/Other from Related Parties	446,000		446,000			2,609,000
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties	1,370,000		1,370,000			906,000
Other Long-Term Liabilities	0		0			0
Consolidated Statement of Operations
Net Revenue Rental Operations	0	0	0	0
Other Income, Net	0	0	0	0
Dividends Paid	0	0	0	0
FGF \| Co-venturer \| Agribusiness
Consolidated Statement of Operations
Net Revenue Agribusiness	9,626,000	11,685,000	12,105,000	11,685,000
Agribusiness Expense and Other	10,508,000	$ 8,798,000	12,941,000	$ 8,798,000
LLCB
Balance Sheet
Accounts Payable						1,200,000
Payables to Related Parties	3,675,000		3,675,000
LLCB \| Affiliated Entity
Balance Sheet
Receivable/Other from Related Parties	0		0			0
Other Assets	0		0			0
Accounts Payable	0		0			0
Payables to Related Parties						0
Other Long-Term Liabilities	$ 0		$ 0			$ 1,200,000