Property and Equipment, net (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property and Equipment
Property and equipment, gross	$ 2,715	$ 2,847
Less accumulated depreciation and amortization	2,051	1,571
Property and equipment, net	664	1,276
Depreciation expense	612	547	$ 319
Computer equipment
Property and Equipment
Property and equipment, gross	278	278
Software
Property and Equipment
Property and equipment, gross	968	1,100
Furniture, fixtures and other
Property and Equipment
Property and equipment, gross	1,170	1,170
Leasehold improvements
Property and Equipment
Property and equipment, gross	$ 299	$ 299

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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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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