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Fair Value Measurements, Cash Equivalents and Marketable Securities - Narrative (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2022 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Realized gain (loss) on marketable debt securities |  | $ 0 | $ 0 | $ 0 | $ 0 |
Recognition of credit losses |  | 0 | 0 | 0 | 0 |
Lunit Inc. |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Lock up period | 2 years |  |  |  |  |
Unrealized (loss) gain on marketable equity securities |  | (1,200,000) | $ 16,600,000 | (29,300,000) | $ 84,500,000 |
Fair Value, Measurements, Recurring |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Short-term marketable equity securities |  | 31,280,000 |  | 31,280,000 |  |
Long-term marketable equity securities |  |  |  |  |  | $ 98,002,000
Contingent consideration |  | 7,300,000 |  | 7,300,000 |  | 6,540,000
Level 1 | Fair Value, Measurements, Recurring |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Short-term marketable equity securities |  | 31,280,000 |  | 31,280,000 |  |
Long-term marketable equity securities |  |  |  |  |  | 98,002,000
Contingent consideration |  | 0 |  | 0 |  | 0
Level 1 | Fair Value, Measurements, Recurring | Lunit Inc. |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Short-term marketable equity securities |  | 31,300,000 |  | 31,300,000 |  |
Long-term marketable equity securities |  |  |  |  |  | 98,000,000.0
Level 3 | Fair Value, Measurements, Recurring |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Short-term marketable equity securities |  | 0 |  | 0 |  |
Long-term marketable equity securities |  |  |  |  |  | 0
Contingent consideration |  | 7,300,000 |  | 7,300,000 |  | 6,540,000
Contingent consideration liability, noncurrent |  | $ 1,800,000 |  | $ 1,800,000 |  | $ 5,000,000.0

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