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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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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.

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Condensed Consolidated Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Public Utility, Property, Plant and Equipment [Line Items]
Property and equipment	$ 974		$ 974		$ 1,277
Less: accumulated depreciation	(664)		(664)		(780)
Property and equipment, net	310		310		497
Depreciation expense	61	$ 88	129	$ 216
Loss on impairment of long lived assets			446	$ 0
Computer equipment
Public Utility, Property, Plant and Equipment [Line Items]
Property and equipment	306		306		336
Furniture and fixtures
Public Utility, Property, Plant and Equipment [Line Items]
Property and equipment	377		377		621
Leasehold improvements
Public Utility, Property, Plant and Equipment [Line Items]
Property and equipment	291		291		$ 320
Leasehold Improvements and Furniture and Fixtures
Public Utility, Property, Plant and Equipment [Line Items]
Loss on impairment of long lived assets	$ 163		$ 163