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6. Accounts Payable and Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2017
Payables and Accruals [Abstract]  
Accounts payable and accrued expenses consist
    2017     2016  
    ($ in thousands)  
Accounts payable   $ 15     $ 26  
Accrued audit/tax expense     47       46  
Accrued consulting fees-related party     1       1  
Environmental remediation                
obligations     -       19  
Accrued debenture fees     145       137  
Accrued miscellaneous     1       1  
    $ 209     $ 230  
Accrued Real Estate Taxes
    2017     2016  
    ($ in thousands)  
Current accrued real estate taxes   $ 4     $ 4