Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Significant Existing Real Estate Activity (Detail)

v3.10.0.1
Real Estate and Intangible Assets - Significant Existing Real Estate Activity (Detail)
 12 Months Ended
Jun. 01, 2017
lease
Dec. 31, 2018
USD ($)
a
lease
Dec. 31, 2017
USD ($)
a
Mar. 31, 2018
USD ($)
Real Estate Properties [Line Items]        
Number of Leases 2      
Total Farm Acres | a   73,205 63,014  
Arizona, California, Florida and Michigan        
Real Estate Properties [Line Items]        
Number of Leases   9    
Total Farm Acres | a   3,659    
Leases Terminated Early        
Real Estate Properties [Line Items]        
Write off of deferred rent receivable | $   $ 108,000 $ 99,000  
Deferred rent liability | $       $ 84,000
Prior Leases | Arizona, California, Florida and Michigan        
Real Estate Properties [Line Items]        
Total Annualized Straight-line Rent | $   $ 1,742,000    
Number of Leases with Participation Rents   1    
Lease Structures, Number of NNN Leases   4    
Lease Structures, Number of NN Leases   5    
New Leases | Arizona, California, Florida and Michigan        
Real Estate Properties [Line Items]        
Total Annualized Straight-line Rent | $   $ 2,001,000    
Number of Leases with Participation Rents   4    
Lease Term   5 years 3 months 18 days    
Lease Structures, Number of NNN Leases   7    
Lease Structures, Number of NN Leases   2    
Capital Commitment        
Real Estate Properties [Line Items]        
Commitment to provide capital | $   $ 600,000