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

+ References

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Fixed assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fixed assets [Abstract]
Fixed assets	$ 20,627	$ 22,463
Less: Accumulated depreciation and amortization	(19,010)	(20,518)
Fixed assets, net	2,244	2,272	$ 2,169
Tooling, Machinery and Equipment [Member]
Fixed assets [Abstract]
Fixed assets	9,175	11,177
Furniture and Office Equipment [Member]
Fixed assets [Abstract]
Fixed assets	1,694	1,690
Computer Software and Equipment [Member]
Fixed assets [Abstract]
Fixed assets	7,062	6,930
Leasehold Improvements [Member]
Fixed assets [Abstract]
Fixed assets	2,696	2,666
Fixed Assets, Excluding Construction in-Process [Member]
Fixed assets [Abstract]
Fixed assets, net	1,617	1,945
Construction in-Process [Member]
Fixed assets [Abstract]
Fixed assets	$ 627	$ 327