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Short-term and long-term invesmtents (Tables) | 12 Months Ended
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Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract] |
Schedule of Investments | The Company’s short-term and long-term investments, consisting of debt instruments classified as held-to-maturity and equity investments with readily determinable fair values or redemption values, were as follows:
| December 31, 2021 |  | December 31, 2020
| Debt securities |  | Equity securities |  | Total |  | Debt securities |  | Equity securities |  | Total
Certificates of deposit and other time deposits | $ | 23,226 |  |  | $ | — |  |  | $ | 23,226 |  |  | $ | 8,217 |  |  | $ | — |  |  | $ | 8,217 |
Investments in mutual funds and common stock | — |  |  | 48,598 |  |  | 48,598 |  |  | — |  |  | 44,077 |  |  | 44,077 |
| $ | 23,226 |  |  | $ | 48,598 |  |  | $ | 71,824 |  |  | $ | 8,217 |  |  | $ | 44,077 |  |  | $ | 52,294 |
Short-term investments | $ | 8,227 |  |  | $ | 14,083 |  |  | $ | 22,310 |  |  | $ | 8,217 |  |  | $ | 11,884 |  |  | $ | 20,101 |
Long-term investments | 14,999 |  |  | 34,515 |  |  | 49,514 |  |  | — |  |  | 32,193 |  |  | 32,193 |
| $ | 23,226 |  |  | $ | 48,598 |  |  | $ | 71,824 |  |  | $ | 8,217 |  |  | $ | 44,077 |  |  | $ | 52,294 |

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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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