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Financial Instruments (Summary of Contractual Maturities of Cash Equivalents and Available-for-Sale Investments) (Details) $ in Thousands | Dec. 31, 2022 USD ($)
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Cash, Cash Equivalents and Investments [Abstract] |
Due in one year or less | $ 564,752
Due after one year through five years | 69,930
Total investments | $ 634,682

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