Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.5.0.2
Commitments and Contingencies - Additional Information (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Northeast [Member]        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent 2.00%   2.00%  
Mid Atlantic [Member]        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent 20.00%   20.00%  
Southeast [Member]        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent 75.00%   75.00%  
Southwest [Member]        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent 3.00%   3.00%  
Amscot Building [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2045  
Ground leases expense $ 4,539 $ 4,539 $ 13,617 $ 13,510
Beaver Ruin Village [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2054  
Ground leases expense 11,428 11,428 $ 34,284 11,428
Beaver Ruin Village II [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2056  
Ground leases expense 4,463 4,463 $ 13,389 4,463
Devine Street [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2035  
Operating leases, rent expense, net 62,500   $ 117,361  
Charleston Office [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2019  
Operating leases, rent expense, net 25,524 $ 24,910 $ 66,832 $ 84,709
Moncks Corner [Member]        
Loss Contingencies [Line Items]        
Long term ground leases expiration period     2040  
Operating leases, rent expense, net $ 30,327   $ 56,940