Balance Sheet Detail - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, plant, and equipment and finance lease right-of-use asset, before accumulated depreciation and amortization	$ 6,443	$ 12,327
Less: Accumulated depreciation	(3,424)	(10,028)
Property and equipment, net	3,019	2,299
Leasehold improvements
Property, plant and equipment, gross	826	1,051
Equipment leasing
Property, plant and equipment, gross	107	186
Office equipment and furniture
Property, plant and equipment, gross	1,527	3,407
Machinery and equipment
Property, plant and equipment, gross	$ 3,983	$ 7,683

Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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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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