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Real Estate Development - Narrative (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jan. 31, 2021
USD ($)
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Feb. 29, 2020
USD ($)
Jan. 31, 2020
USD ($)
Oct. 31, 2019
USD ($)
Nov. 10, 2015
USD ($)
Oct. 31, 2005
a
property
Real Estate Properties [Line Items]                    
Loan balance       $ 125,585,000       $ 108,915,000    
Real estate, gross       2,543,000       2,543,000    
Sevilla                    
Real Estate Properties [Line Items]                    
Real estate, gross       2,543,000            
Sevilla | Disposal Group, Not Discontinued Operations                    
Real Estate Properties [Line Items]                    
Sales price             $ 2,700,000      
Sevilla | Disposal Group, Not Discontinued Operations | Forecast                    
Real Estate Properties [Line Items]                    
Net proceeds from sale of real estate     $ 2,550,000              
East Areas I and II                    
Real Estate Properties [Line Items]                    
Number of properties | property                   2
Number of acres | a                   550
Limoneira Lewis Community Builders, LLC Agreement                    
Real Estate Properties [Line Items]                    
Proceeds from sale of real estate held-for-investment       2,800,000 $ 4,000,000          
Centennial Property                    
Real Estate Properties [Line Items]                    
Proceeds from sale of real estate held-for-investment   $ 3,250,000                
Real estate, gross   2,983,000                
Proceeds from issuance of debt   $ 3,000,000                
Carrying value of note       $ 2,490,000            
LLCB                    
Real Estate Properties [Line Items]                    
Payable to related parties               $ 1,200,000    
Amount loaned to joint venture           $ 1,800,000        
Interest rate           4.60%        
LLCB | Lewis Group of Companies                    
Real Estate Properties [Line Items]                    
Amount loaned to joint venture           $ 1,800,000        
Lewis Group of Companies | East Area I                    
Real Estate Properties [Line Items]                    
Ownership percentage                 50.00%  
Equity method investment, aggregate cost                 $ 20,000,000  
LIBOR | Centennial Property                    
Real Estate Properties [Line Items]                    
Interest rate spread on variable rate       2.75%            
Unsecured Line of Credit Loan Agreement and Promissory Note                    
Real Estate Properties [Line Items]                    
Estimated value of the guarantee obligation       $ 1,080,000            
Unsecured Line of Credit Loan Agreement and Promissory Note | LLCB                    
Real Estate Properties [Line Items]                    
Face amount of loan $ 45,000,000                  
Loan balance       $ 39,404,000            
Unsecured Line of Credit Loan Agreement and Promissory Note | LIBOR | LLCB                    
Real Estate Properties [Line Items]                    
Basis spread on variable rate 2.85%