Quarterly report pursuant to Section 13 or 15(d)

Loans Payable - Additional Information (Details)

v3.20.1
Loans Payable - Additional Information (Details)
3 Months Ended
May 12, 2020
USD ($)
Mar. 23, 2020
USD ($)
Jan. 23, 2020
USD ($)
Jan. 21, 2020
USD ($)
Dec. 21, 2019
USD ($)
Aug. 31, 2019
Mar. 31, 2020
USD ($)
parcel
property
Apr. 30, 2020
USD ($)
Jan. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Nov. 05, 2019
USD ($)
Debt Instrument [Line Items]                      
Loans payable, net             $ 336,277,000     $ 340,913,000  
Scheduled maturities of long-term debt             $ 53,780,000        
Number of undeveloped parcels | parcel             6        
Shoppes at Myrtle Park                      
Debt Instrument [Line Items]                      
Debt instrument, periodic payment     $ 33,000                
Loans payable, net     $ 6,000,000       $ 5,988,000     0  
Debt instrument, interest rate. stated percentage     4.45%       4.45%        
Village of Martinsville                      
Debt Instrument [Line Items]                      
Debt instrument, periodic payment             $ 89,664        
Loans payable, net             $ 16,258,000     16,351,000  
Debt instrument, interest rate. stated percentage             4.28%        
Laburnum Square                      
Debt Instrument [Line Items]                      
Loans payable, net             $ 7,665,000     7,665,000  
Debt instrument, interest rate. stated percentage             4.28%        
Folly Road                      
Debt Instrument [Line Items]                      
Debt instrument, periodic payment   $ 41,000                  
Loans payable, net   $ 7,350,000         $ 7,350,000     5,922,000  
Debt instrument, interest rate. stated percentage   4.65%         4.65%        
KeyBank | Subsequent Event                      
Debt Instrument [Line Items]                      
Debt instrument, interest rate. stated percentage               1.00%      
KeyBank | Folly Road | Subsequent Event                      
Debt Instrument [Line Items]                      
Proceeds from Issuance of Debt $ 1,260,000                    
Line of Credit | First National Bank Line of Credit                      
Debt Instrument [Line Items]                      
Debt instrument, periodic payment             $ 24,656        
Loans payable, net             $ 1,156,000     1,214,000  
Line of Credit | First National Bank Line of Credit | LIBOR                      
Debt Instrument [Line Items]                      
Debt instrument, basis spread on variable rate             3.00%        
Line of Credit | KeyBank                      
Debt Instrument [Line Items]                      
Number of collateral properties | property             5        
Debt instrument, periodic payment     $ 5,750,000 $ 1,780,000 $ 350,000   $ 350,000        
Borrowings outstanding under line of credit             $ 9,300,000   $ 10,000,000    
Interest rate on line of credit facility at the end of period             4.46%        
Loans payable, net             $ 9,300,000     $ 17,879,000  
Line of Credit | KeyBank | Subsequent Event                      
Debt Instrument [Line Items]                      
Borrowings outstanding under line of credit $ 8,600,000             $ 2,000,000      
Line of Credit | KeyBank | Amended and Restated Credit Agreement                      
Debt Instrument [Line Items]                      
Line of credit facility, extension period             1 year        
Line of Credit | KeyBank | LIBOR                      
Debt Instrument [Line Items]                      
Debt instrument, basis spread on variable rate           3.50%          
Line of Credit | KeyBank | LIBOR | Amended and Restated Credit Agreement                      
Debt Instrument [Line Items]                      
Debt instrument, basis spread on variable rate             2.50%        
Commercial Real Estate | Line of Credit | KeyBank                      
Debt Instrument [Line Items]                      
Borrowings outstanding under line of credit                     $ 15,000,000