Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

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Commitments and Contingencies - Additional Information (Details)
 1 Months Ended 3 Months Ended 5 Months Ended 9 Months Ended 13 Months Ended 14 Months Ended 25 Months Ended 44 Months Ended 89 Months Ended
Jun. 01, 2017
farm
Jul. 31, 2018
USD ($)
a
Jun. 30, 2018
USD ($)
May 31, 2018
USD ($)
Aug. 31, 2017
USD ($)
a
Jun. 30, 2017
farm
Mar. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
a
Sep. 30, 2018
USD ($)
a
Sep. 30, 2017
USD ($)
a
Jun. 30, 2018
USD ($)
Sep. 30, 2018
USD ($)
a
Jun. 30, 2019
USD ($)
Dec. 31, 2020
USD ($)
Sep. 30, 2024
Jun. 07, 2018
a
May 31, 2017
farm
Loss Contingencies [Line Items]                                  
Estimated cost                 $ 17,157,000 $ 3,438,000              
Number of farms acquired | farm 2                                
Area of real estate property (in acres) | a               67,826 67,826 61,794   67,826          
2017 New Real Estate Activity                                  
Loss Contingencies [Line Items]                                  
Area of real estate property (in acres) | a                   11,202              
2018 New Real Estate Activity                                  
Loss Contingencies [Line Items]                                  
Area of real estate property (in acres) | a               6,735 6,735     6,735          
Oregon                                  
Loss Contingencies [Line Items]                                  
Number of farms in lease amendment | farm                                 1
Accrued liabilities related to lease               $ 921,000 $ 921,000     $ 921,000          
Area of real estate property (in acres) | a               418 418 2,313   418          
Oregon | Forecast                                  
Loss Contingencies [Line Items]                                  
Estimated cost                           $ 1,800,000      
Annual rent escalation (as percent)                             6.50%    
Oregon | 2018 New Real Estate Activity                                  
Loss Contingencies [Line Items]                                  
Estimated cost       $ 250,000                          
Expended or accrued for capital improvements               $ 31,000                  
North Carolina                                  
Loss Contingencies [Line Items]                                  
Number of farms acquired | farm           2                      
Expended or accrued for capital improvements                     $ 166,000            
Area of real estate property (in acres) | a               310 310 310   310          
North Carolina | Forecast                                  
Loss Contingencies [Line Items]                                  
Estimated cost                         $ 300,000        
Florida                                  
Loss Contingencies [Line Items]                                  
Area of real estate property (in acres) | a               17,184 17,184 11,225   17,184       26  
Florida | 2017 New Real Estate Activity                                  
Loss Contingencies [Line Items]                                  
Expended or accrued for capital improvements             $ 748,000                    
Collier and Hendry, FL | 2018 New Real Estate Activity | Owl Hammock                                  
Loss Contingencies [Line Items]                                  
Estimated cost   $ 2,000,000                              
Area of real estate property (in acres) | a   5,630           5,630 5,630     5,630          
Okeechobee, FL | 2017 New Real Estate Activity | Parrot Avenue                                  
Loss Contingencies [Line Items]                                  
Estimated cost                       $ 2,500,000          
Area of real estate property (in acres) | a         1,884         1,910              
California                                  
Loss Contingencies [Line Items]                                  
Annual rent escalation (as percent)         6.00%                        
Expended or accrued for capital improvements                       $ 1,000,000          
Area of real estate property (in acres) | a               8,435 8,435 7,921   8,435          
California | 2018 New Real Estate Activity                                  
Loss Contingencies [Line Items]                                  
Estimated cost   $ 75,000 $ 425,000                            
Santa Barbara, CA | 2017 New Real Estate Activity | Cat Canyon Road                                  
Loss Contingencies [Line Items]                                  
Estimated cost         $ 4,000,000                        
Area of real estate property (in acres) | a         361         361