Investments - Summary of Cumulative Impairment Charges of Equity Investments without Readily Determinable Fair Values (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||
| Cumulative downward adjustments for observable price changes and impairment | $ 56,217 | $ 53,136 |