PROPERTY AND EQUIPMENT, SCHEDULE (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property and equipment
Property and equipment	$ 626	$ 717
Less accumulated depreciation and amortization	(541)	(644)
Property and equipment, net	85	73
Computer software and hardware
Property and equipment
Property and equipment	40	131
Research and lab equipment
Property and equipment
Property and equipment	520	520
Leasehold improvements
Property and equipment
Property and equipment	$ 66	$ 66

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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