Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Summary Information of Farms Additional Information (Detail)

v3.8.0.1
Real Estate and Intangible Assets - Summary Information of Farms Additional Information (Detail)
 3 Months Ended 9 Months Ended 20 Months Ended 25 Months Ended
Aug. 09, 2017
USD ($)
Sep. 30, 2016
USD ($)
a
Sep. 30, 2017
USD ($)
a
option
lease
farm
Sep. 30, 2016
USD ($)
a
option
farm
shares
Mar. 31, 2019
USD ($)
Aug. 30, 2019
USD ($)
Dec. 31, 2016
USD ($)
Real Estate Properties [Line Items]              
Number of farms | farm     72 56      
Area leased (in acres) | a   33,800 61,794 33,800      
Farm acres (in acres) | a     49,667        
Net cost basis     $ 447,332,000        
Capital expenditures     3,438,000 $ 10,126,000      
Offering costs     $ 1,962,000 $ 242,000      
2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm     14        
Area leased (in acres) | a     11,202        
Annualized straight-line cash rent     $ 6,692,000        
2016 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm       13      
Area leased (in acres) | a   16,988   16,988      
Annualized straight-line cash rent       $ 4,332,000      
Direct leasing costs in connection with acquisitions   $ 128,000   229,000      
2016 New Real Estate Activity | New Tenant Lease Agreement              
Real Estate Properties [Line Items]              
Direct leasing costs in connection with acquisitions       $ 9,520      
Arizona              
Real Estate Properties [Line Items]              
Number of farms | farm     6 2      
Area leased (in acres) | a   3,000 6,280 3,000      
Farm acres (in acres) | a     5,228        
Net cost basis     $ 40,570,000        
Arizona | 2017 New Real Estate Activity | In-place leases              
Real Estate Properties [Line Items]              
Number of leases | lease     4        
Arizona | 2017 New Real Estate Activity | In-place leases | Agricultural              
Real Estate Properties [Line Items]              
Number of leases | lease     3        
Arizona | State of Arizona              
Real Estate Properties [Line Items]              
Farm acres (in acres) | a     1,221        
Net cost basis     $ 3,300,000        
Arizona | State of Arizona | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm     2        
Area leased (in acres) | a     1,368        
Arizona | State of Arizona | State Lease 1 | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Area leased (in acres) | a     485        
Arizona | State of Arizona | State Lease 2 | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Area leased (in acres) | a     883        
Yuma, AZ | Spot Road | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm     4        
Area leased (in acres) | a     3,280        
Annualized straight-line cash rent     $ 1,673,000        
Yuma, AZ | Spot Road - Lease 1 | 2017 New Real Estate Activity | Agricultural              
Real Estate Properties [Line Items]              
Lease expiration date     Jun. 30, 2019        
Yuma, AZ | Spot Road - Lease 2 | 2017 New Real Estate Activity | Agricultural              
Real Estate Properties [Line Items]              
Lease expiration date     Sep. 15, 2026        
Yuma, AZ | Spot Road - Lease 3 | 2017 New Real Estate Activity | Agricultural              
Real Estate Properties [Line Items]              
Lease expiration date     Sep. 15, 2026        
Yuma, AZ | Spot Road Lease 4 | 2017 New Real Estate Activity | Residential              
Real Estate Properties [Line Items]              
Lease expiration date     Sep. 30, 2019        
Okeechobee, FL | Parrot Avenue(6) | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm     1        
Area leased (in acres) | a     1,910        
Number of renewal options | option     0        
Annualized straight-line cash rent     $ 488,000        
Okeechobee, FL | Parrot Avenue(6) | 2017 New Real Estate Activity | Forecast              
Real Estate Properties [Line Items]              
Capital expenditures         $ 1,000,000    
Okeechobee, FL | Tenant Two | Parrot Avenue(6) | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Lease term 6 years            
Number of renewal options | option     2        
Renewal term     6 years        
Annualized straight-line cash rent $ 542,000            
Okeechobee, FL | Tenant One | Parrot Avenue(6) | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Lease term 7 months            
Santa Barbara, CA | Cat Canyon Road(7) | 2017 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm     1        
Area leased (in acres) | a     361        
Number of renewal options | option     2        
Renewal term     5 years        
Annualized straight-line cash rent     $ 322,000        
Santa Barbara, CA | Cat Canyon Road(7) | 2017 New Real Estate Activity | Forecast              
Real Estate Properties [Line Items]              
Capital expenditures           $ 4,000,000  
Saguache, CO | Gunbarrel Road | 2016 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm       3      
Area leased (in acres) | a   6,191   6,191      
Lease term       5 years      
Number of renewal options | option       1      
Renewal term       5 years      
Annualized straight-line cash rent       $ 1,591,000      
Units issued as partial consideration of acquisition (in shares) | shares       745,879      
Fair value of units issued as partial consideration of acquisition   $ 6,500,000   $ 6,500,000      
Offering costs       $ 25,500      
Baca, CO | Baca County | 2016 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm       5      
Area leased (in acres) | a   7,384   7,384      
Lease term       4 years      
Number of renewal options | option       1      
Renewal term       5 years      
Annualized straight-line cash rent       $ 384,000      
Units issued as partial consideration of acquisition (in shares) | shares       125,677      
Fair value of units issued as partial consideration of acquisition   $ 1,500,000   $ 1,500,000      
Offering costs       $ 8,235      
Stanislaus, CA | Diego Ranch | 2016 New Real Estate Activity              
Real Estate Properties [Line Items]              
Number of farms | farm       1      
Area leased (in acres) | a   1,357   1,357      
Lease term       3 years      
Annualized straight-line cash rent       $ 621,000      
Units issued as partial consideration of acquisition (in shares) | shares       343,750      
Fair value of units issued as partial consideration of acquisition   $ 3,900,000   $ 3,900,000      
Offering costs       $ 21,710      
Mortgage notes and bonds payable              
Real Estate Properties [Line Items]              
Unamortized deferred financing costs     $ 1,902,000       $ 1,412,000