6. Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Accounts payable and accrued expenses
Accounts payable	$ 30	$ 26
Accrued audit & professional	37	46
Accrued consulting fees-related party	1	1
Environmental remediation obligations	17	19
Accrued debenture fees	139	137
Accrued miscellaneous	1	1
Total	225	230
Accrued real estate taxes consisted of:
Current real estate taxes	$ 1	$ 4