Quarterly report pursuant to Section 13 or 15(d)

Real Estate and Intangible Assets - Schedule of Acquisitions (Details)

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Real Estate and Intangible Assets - Schedule of Acquisitions (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
USD ($)
a
farm
Mar. 31, 2017
USD ($)
farm
Dec. 31, 2016
option
Dec. 31, 2017
USD ($)
a
Real Estate Properties [Line Items]        
Total Acres | a 63,351     54,340
Number Of Real Estate Farms | farm 75 59    
Lease term 1 year      
New Long-term Debt $ 295,030      
2018 New Real Estate Activity        
Real Estate Properties [Line Items]        
Total Acres | a 337      
Number Of Real Estate Farms | farm 2      
Total Purchase Price $ 5,045      
Acquisition Costs 72      
Annualized Straight Line Rent 150      
New Long-term Debt $ 1,260      
2018 New Real Estate Activity | Kern, CA | Taft Highway(3)        
Real Estate Properties [Line Items]        
Acquisition Date Jan. 31, 2018      
Total Acres | a 161      
Number Of Real Estate Farms | farm 1      
Total Purchase Price $ 2,945      
Acquisition Costs 33      
Annualized Straight Line Rent 0      
New Long-term Debt $ 0      
2018 New Real Estate Activity | Van Buren, MI | Cemetery Road        
Real Estate Properties [Line Items]        
Acquisition Date Mar. 13, 2018      
Total Acres | a 176      
Number Of Real Estate Farms | farm 1      
Total Purchase Price $ 2,100      
Acquisition Costs 39      
Annualized Straight Line Rent 150      
New Long-term Debt $ 1,260      
2018 New Real Estate Activity | Weighted average | Van Buren, MI | Cemetery Road        
Real Estate Properties [Line Items]        
Lease term 9 years 7 months 6 days      
2017 New Real Estate Activity        
Real Estate Properties [Line Items]        
Number Of Real Estate Farms | farm   1    
2017 New Real Estate Activity | Martin, FL | Citrus Boulevard        
Real Estate Properties [Line Items]        
Acquisition Date   Jan. 12, 2017    
Total Acres | a       3,748
Number Of Real Estate Farms | farm   1    
Lease term   7 years    
Number of renewal options | option     3  
Renewal term     5 years  
Total Purchase Price   $ 54,000    
Acquisition Costs       $ 80
Annualized Straight Line Rent   $ 2,926    
New Long-term Debt       $ 32,400