Note 3 - Accrued Expenses (in thousands) - Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued payroll	$ 154	$ 131
Accrued vacation	310	284
Rent payable	191	139
Accrued interest, related party	479	348
Other	269	86
Total accrued expenses	$ 1,403	$ 988