Basis of presentation and consolidation and significant accounting policies - Summary of Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Investments with Readily Determinable Fair Value	$ 3,316	$ 15,383
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Investments with Readily Determinable Fair Value	$ 3,316	$ 15,383