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Real Estate Sold (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Information Relating to Sale of Real Estate Owned [Abstract]        
Net gain on sale of real estate $ 0 $ 0 $ 0 $ 3,278
R. A. Bianco [Member] | Line of Credit [Member]        
Information regarding accrued interest expense on the loan payable [Abstract]        
Repayment of working capital loan plus accrued interest     2,623  
Commercial Office Building [Member]        
Information Relating to Sale of Real Estate Owned [Abstract]        
Gross sales price     5,200  
Less: Transactions costs     (290)  
Net cash proceeds     4,910  
Less: Real estate carrying value, (net of accumulated depreciation) $ (1,632)   (1,632)  
Net gain on sale of real estate     $ 3,278