Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.10.0.1
Subsequent Events (Details)
$ in Thousands
Feb. 07, 2019
USD ($)
a
Jan. 11, 2019
USD ($)
Nov. 05, 2018
USD ($)
Jul. 15, 2018
USD ($)
Feb. 27, 2019
USD ($)
Jan. 29, 2019
USD ($)
Jan. 15, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 11, 2018
USD ($)
Oct. 05, 2018
USD ($)
Sep. 27, 2018
USD ($)
May 14, 2018
USD ($)
May 03, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 12, 2017
USD ($)
Jun. 14, 2017
USD ($)
Subsequent Event [Line Items]                                
Loans payable, net               $ 360,117           $ 307,375    
Monarch Bank Line Of Credit [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net                             $ 1,270  
Debt interest rate                             4.85%  
Perimeter Square [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net               $ 6,250           5,382   $ 4,500
Debt interest rate               5.50%               5.50%
Perimeter Square Construction Loan [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net               $ 247           0    
Debt interest rate               6.00%   6.00%            
Promissory Note [Member] | Perimeter Square [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net                               $ 6,250
Promissory Note [Member] | Perimeter Square Construction Loan [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net                   $ 247            
Revere Loan [Member]                                
Subsequent Event [Line Items]                                
Debt paydown     $ 100 $ 500                        
Loans payable, net       $ 3,500       $ 1,059       $ 3,500 $ 6,810 $ 6,808    
Debt interest rate     10.00% 10.00%       10.00%       9.00% 8.00% 10.00%    
Debt exit fee     $ 575           $ 575   $ 75 $ 500 $ 360      
Subsequent Event [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Jenks Plaza [Member]                                
Subsequent Event [Line Items]                                
Contract price on sale of assets discontinued operations   $ 2,200                            
Gain (loss) on disposal of properties   388                            
Disposal group consideration, net   1,840                            
Subsequent Event [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Harbor Point [Member]                                
Subsequent Event [Line Items]                                
Contract price on sale of assets discontinued operations $ 550                              
Area of real estate property | a 1.28                              
Repayments of mortgage payable $ 30                              
Subsequent Event [Member] | Promissory Note [Member] | Perimeter Square [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net             $ 6,250                  
Debt interest rate             6.50%                  
Subsequent Event [Member] | Promissory Note [Member] | Perimeter Square Construction Loan [Member]                                
Subsequent Event [Line Items]                                
Loans payable, net             $ 247                  
Debt interest rate             6.50%                  
Subsequent Event [Member] | Revere Loan [Member]                                
Subsequent Event [Line Items]                                
Debt paydown   323                            
Loans payable, net         $ 505                      
Debt exit fee           $ 20                    
Subsequent Event [Member] | Monarch Bank Line Of Credit [Member]                                
Subsequent Event [Line Items]                                
Debt paydown   $ 1,510