Fixed assets - Summary of Fixed Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Fixed assets	$ 3,547	$ 3,717
Less: accumulated depreciation and amortization	2,996	2,518
Fixed assets, net	551	1,199
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Fixed assets	1,304	1,407
Computer and office equipment [Member]
Property Plant And Equipment [Line Items]
Fixed assets	1,803	1,855
Computer software [Member]
Property Plant And Equipment [Line Items]
Fixed assets	375	375
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Fixed assets	$ 65	$ 80

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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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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