Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.19.1
Subsequent Events (Details)
ft² in Thousands
Aug. 31, 2019
USD ($)
May 01, 2019
USD ($)
Apr. 25, 2019
USD ($)
Mar. 19, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jul. 31, 2019
USD ($)
Apr. 30, 2019
USD ($)
ft²
Apr. 29, 2019
shares
Mar. 31, 2019
USD ($)
Jan. 15, 2019
USD ($)
Dec. 31, 2018
USD ($)
Apr. 29, 2014
shares
Subsequent Event [Line Items]                        
Loans payable, net                 $ 348,651,000   $ 360,117,000  
Subsequent Event                        
Subsequent Event [Line Items]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares               248,325        
Common Stock                        
Subsequent Event [Line Items]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares                       1,986,600
Common Stock | Subsequent Event                        
Subsequent Event [Line Items]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares               1,986,600        
Perimeter Square | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event                        
Subsequent Event [Line Items]                        
Contract Price             $ 7,430,000          
JANAF Outparcel Mariner [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event                        
Subsequent Event [Line Items]                        
Area of real estate property leased | ft²             30          
Perimeter Square                        
Subsequent Event [Line Items]                        
Loans payable, net                 6,250,000 $ 6,250,000 $ 6,250,000  
Promissory Note [Member] | Perimeter Square | Subsequent Event                        
Subsequent Event [Line Items]                        
Loans payable, net             $ 6,500,000          
KeyBank | Line of Credit                        
Subsequent Event [Line Items]                        
Debt instrument, periodic payment       $ 850,000                
Long-term Line of Credit                 $ 51,250,000      
KeyBank | Line of Credit | Subsequent Event                        
Subsequent Event [Line Items]                        
Debt instrument, periodic payment   $ 250,000 $ 1,000,000                  
Long-term Line of Credit         $ 7,500,000 $ 27,000,000            
Line of Credit Facility, Maximum Borrowing Capacity $ 11,000,000.00                      
LIBOR | KeyBank | Line of Credit | Subsequent Event                        
Subsequent Event [Line Items]                        
Debt instrument, basis spread on variable rate 350.00%