Annual report pursuant to Section 13 and 15(d)

Disposition of Property (Details)

v3.20.4
Disposition of Property (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2020
USD ($)
ft²
Jul. 31, 2019
USD ($)
ft²
Mar. 31, 2019
USD ($)
ft²
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Dec. 31, 2020
USD ($)
ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Square Feet | ft²           878,000
Net Sales Price           $ 128,505,000
Gain on sale of assets           $ 43,422,000
Terrell [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Square Feet | ft² 178,000          
Net Sales Price $ 7,626,000          
Gain on sale of assets $ 2,324,000     $ 2,300,000    
Nags Head, Ocean City, Park City & Williamsburg [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Square Feet | ft²     878,000      
Net Sales Price     $ 128,248,000      
Gain on sale of assets     $ 43,422,000   $ 43,400,000  
Land outparcel [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Square Feet | ft²   0        
Net Sales Price   $ 257,000        
Gain on sale of assets   $ 0