Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property and Equipment
Property and Equipment, Total	$ 6,319	$ 5,822
Less accumulated depreciation and amortization	(4,335)	(4,140)
Property and equipment, net	1,984	1,682
Depreciation expense	428	383	$ 231
Umbrella Agreement with Aroa
Property and Equipment
Property and Equipment, Total	200	200
Lab equipment
Property and Equipment
Property and Equipment, Total	$ 2,883	2,635
Estimated useful lives	5 years
Furniture and fixtures
Property and Equipment
Property and Equipment, Total	$ 284	274
Estimated useful lives	5 years
Computer equipment and software
Property and Equipment
Property and Equipment, Total	$ 645	604
Estimated useful lives	3 years
Leasehold improvements
Property and Equipment
Property and Equipment, Total	$ 2,507	$ 2,309

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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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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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