Property and equipment net - Summary of property plant and equipment (Details) - USD ($) $ in Thousands |
Mar. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | $ 3,914 | $ 3,221 | |
| Less: accumulated depreciation and amortization | (1,836) | (1,281) | |
| Property and equipment, net | $ 2,024 | 2,078 | 1,940 |
| Capitalized software | |||
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | 693 | ||
| Leasehold improvements | |||
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | 3,088 | 3,088 | |
| Office furniture and fixtures | |||
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | 29 | 29 | |
| Equipment | |||
| Property, Plant and Equipment [Line Items] | |||
| Property and equipment, gross | $ 104 | $ 104 |