Note 5 - Equipment, Furniture and Leasehold improvements - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, plant and equipment gross	$ 1,357	$ 2,762
Less: Accumulated depreciation and amortization	(1,035)	(2,510)
Equipment, furniture and leasehold improvements, net	322	252
Computer Equipment [Member]
Property, plant and equipment gross	987	1,290
Office Furniture and Equipment [Member]
Property, plant and equipment gross	147	262
Leasehold Improvements [Member]
Property, plant and equipment gross	187	1,165
Software and Software Development Costs [Member]
Property, plant and equipment gross	$ 36	$ 45

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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