7. Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts payable and accrued expenses
Accounts payable	$ 26	$ 7
Accrued audit/tax expense	46	40
Accrued consulting fees-related party	1	1
Environmental remediation obligations	19	25
Accrued debenture fees	137	128
Accrued miscellaneous	1	1
Total	230	202
Accrued real estate taxes consisted of:
Current accrued real estate taxes	$ 4	$ 8