6. Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts payable and accrued expenses
Accounts payable	$ 0	$ 18
Accrued audit, review and tax expense	13	43
Accrued consulting fees-related party	1	1
Accrued legal	1	14
Accrued debenture fees	153	153
Accrued miscellaneous	1	1
Total	$ 169	$ 230