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3. Fair Value Measurements Contingent Consideration (Details) - Curiosity Diagnostics - USD ($) $ in Millions | Dec. 31, 2022 | Aug. 03, 2022
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 70.0 | $ 70.0
Measurement Input, Discount Rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Business Combination, Contingent Consideration, Liability | 5.40% |

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