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Equity Method Investment - Estimated Basis Difference attributable to Identifiable Assets and Useful Lives (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | May 31, 2022
--- | --- | --- | ---
Marketable Securities [Line Items] |  |  |
Intangible assets | $ 350,490 | $ 849,935 |
Syniverse |  |  |
Marketable Securities [Line Items] |  |  |
Intangible assets | $ 451,600 | $ 508,900 | $ 530,741
Syniverse | Trademarks |  |  |
Marketable Securities [Line Items] |  |  |
Intangible assets |  |  | 28,822
Syniverse | Developed technology |  |  |
Marketable Securities [Line Items] |  |  |
Intangible assets |  |  | $ 62,767
Estimated life |  |  | 6 years
Syniverse | Customer relationships |  |  |
Marketable Securities [Line Items] |  |  |
Intangible assets |  |  | $ 439,152
Estimated life |  |  | 9 years

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