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Related party transactions (Details) - Affiliated Entity - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Naspers Ltd. and Other Entity |  |  |
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | $ 1,500,000 | $ 1,300,000 | $ 800,000
Accounts receivable, related parties | 100,000 | 300,000 |
Certain Vendors |  |  |
Related Party Transaction [Line Items] |  |  |
General and administrative expenses, related party | 900,000 | 300,000 | $ 0
Accounts payable, related parties | $ 100,000 | $ 0 |

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