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Investments in debt and equity securities (Tables) | 6 Months Ended
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Jun. 30, 2022
Investments, Debt and Equity Securities [Abstract] |
Schedule of Investments | The Company’s short-term and long-term debt and equity investments, consisting of debt instruments classified as held-to-maturity and equity investments with readily determinable fair values or redemption values, were as follows:
| June 30, 2022 |  | December 31, 2021
| Debt securities |  | Equity securities |  | Total |  | Debt securities |  | Equity securities |  | Total
Certificates of deposit and other time deposits | $ | 104,837 |  |  | $ | — |  |  | $ | 104,837 |  |  | $ | 23,226 |  |  | $ | — |  |  | $ | 23,226 |
Investments in mutual funds and common stocks | — |  |  | 40,214 |  |  | 40,214 |  |  | — |  |  | 48,598 |  |  | 48,598 |
| $ | 104,837 |  |  | $ | 40,214 |  |  | $ | 145,051 |  |  | $ | 23,226 |  |  | $ | 48,598 |  |  | $ | 71,824 |
Short-term investments | $ | 89,830 |  |  | $ | 10,659 |  |  | $ | 100,489 |  |  | $ | 8,227 |  |  | $ | 14,083 |  |  | $ | 22,310 |
Long-term investments | 15,007 |  |  | 29,555 |  |  | 44,562 |  |  | 14,999 |  |  | 34,515 |  |  | 49,514 |
| $ | 104,837 |  |  | $ | 40,214 |  |  | $ | 145,051 |  |  | $ | 23,226 |  |  | $ | 48,598 |  |  | $ | 71,824 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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