Fixed assets, net - Summary of Fixed Assets, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Fixed assets	$ 3,787	$ 3,683
Less: accumulated depreciation and amortization	2,140	1,741
Fixed assets, net	1,647	1,942
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Fixed assets	1,407	1,407
Computer and office equipment [Member]
Property Plant And Equipment [Line Items]
Fixed assets	1,846	1,784
Computer software [Member]
Property Plant And Equipment [Line Items]
Fixed assets	454	412
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Fixed assets	$ 80	$ 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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