Note 9 - Property and Equipment, Net - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property and equipment, gross	$ 3,397	$ 3,557
Less: accumulated depreciation	(3,255)	(3,258)
Property and equipment, net	142	299
Leaseholds and Leasehold Improvements [Member]
Property and equipment, gross	321	337
Vehicles [Member]
Property and equipment, gross	771	810
Office Equipment [Member]
Property and equipment, gross	1,353	1,410
Electronic Devices [Member]
Property and equipment, gross	$ 952	$ 1,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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