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v3.23.3

Investments in debt and equity securities (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Investment Holdings [Line Items] |  |
Debt securities | $ 20,430 | $ 82,879
Investments in equity securities | 36,603 | 39,143
Equity Securities, FV-NI | 36,603 | 39,143
Total | 57,033 | 122,022
Debt securities, short-term investments | 5,419 | 67,872
Short-term investments | 11,713 | 77,693
Debt securities, long-term investments | 15,011 | 15,007
Long-term investments | 45,320 | 44,329
Certificates of deposit and other time deposits |  |
Investment Holdings [Line Items] |  |
Debt securities | 20,430 | 82,879
Investments in equity securities | 0 | 0
Total | 20,430 | 82,879
Investments in mutual funds and common stocks |  |
Investment Holdings [Line Items] |  |
Debt securities | 0 | 0
Investments in equity securities | 36,603 | 39,143
Total | 36,603 | 39,143
Short-term Investments |  |
Investment Holdings [Line Items] |  |
Investments in equity securities | 6,294 | 9,821
Long-term Investments |  |
Investment Holdings [Line Items] |  |
Equity Securities, FV-NI, Noncurrent | $ 30,309 | $ 29,322

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