Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Property and Equipment
Property and equipment. gross	$ 2,181	$ 2,265
Less: accumulated depreciation and amortization	(2,181)	(2,200)
Property and equipment, net	0	65
Depreciation and amortization	65	472
Property and Equipment
Property and Equipment
Depreciation and amortization	100	500
Software
Property and Equipment
Property and equipment. gross	2,174	2,214
Computer and office equipment
Property and Equipment
Property and equipment. gross	$ 7	$ 51

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 current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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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.

+ References

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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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