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6. Accounts Payable and Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Accounts payable and accrued expenses    
Accounts payable $ 57 $ 15
Accrued audit & professional 43 47
Accrued consulting fees - related party 1 1
Accrued debenture fees 151 145
Accrued miscellaneous 1 1
Total 253 209
Accrued real estate taxes consisted of:    
Current real estate taxes $ 3 $ 4