Note 3 - Balance Sheet Detail (in Thousands) - Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued payroll	$ 131	$ 134
Accrued vacation	284	279
Rent payable	139	13
Accrued interest, related party	348	184
Other	86	81
Total accrued expenses	$ 988	$ 691