Note 5 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment, gross	$ 2,591	$ 2,754
Accumulated depreciation and amortization	(2,021)	(2,045)
Property and equipment, net	570	709
Computer Equipment [Member]
Property, plant and equipment, gross	1,652	1,726
Office Equipment [Member]
Property, plant and equipment, gross	240	257
Leasehold Improvements [Member]
Property, plant and equipment, gross	$ 699	$ 771