Annual report pursuant to Section 13 and 15(d)

Real Estate and Lease Intangibles - Summary of Future Lease Expirations by Year for Properties (Detail)

v3.6.0.2
Real Estate and Lease Intangibles - Summary of Future Lease Expirations by Year for Properties (Detail)
 12 Months Ended
Dec. 31, 2016
USD ($)
a
lease
Dec. 31, 2015
USD ($)
a
Dec. 31, 2014
USD ($)
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 47    
Expiring Leased Acreage | a 50,592 16,810  
Total Acreage (as percent) 100.00%    
Rental revenue | $ $ 17,305,469 $ 11,888,091 $ 7,170,318
Total Rental Revenue (as percent) 100.00%    
2017      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 11    
Expiring Leased Acreage | a 866    
Total Acreage (as percent) 1.70%    
Rental revenue | $ $ 2,296,025    
Total Rental Revenue (as percent) 13.30%    
2018      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 4    
Expiring Leased Acreage | a 2,710    
Total Acreage (as percent) 5.40%    
Rental revenue | $ $ 825,485    
Total Rental Revenue (as percent) 4.80%    
2019      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 3    
Expiring Leased Acreage | a 2,524    
Total Acreage (as percent) 5.00%    
Rental revenue | $ $ 419,740    
Total Rental Revenue (as percent) 2.40%    
2020      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 9    
Expiring Leased Acreage | a 28,200    
Total Acreage (as percent) 55.70%    
Rental revenue | $ $ 5,247,810    
Total Rental Revenue (as percent) 30.30%    
2021      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 4    
Expiring Leased Acreage | a 6,954    
Total Acreage (as percent) 13.70%    
Rental revenue | $ $ 1,606,592    
Total Rental Revenue (as percent) 9.30%    
2022      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 1    
Expiring Leased Acreage | a 145    
Total Acreage (as percent) 0.30%    
Rental revenue | $ $ 315,896    
Total Rental Revenue (as percent) 1.80%    
Thereafter      
Property Subject to or Available for Operating Lease [Line Items]      
Number of Expiring Leases | lease 15    
Expiring Leased Acreage | a 9,193    
Total Acreage (as percent) 18.20%    
Rental revenue | $ $ 6,593,921    
Total Rental Revenue (as percent) 38.10%