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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Nov. 30, 2023 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | $ 255,737 | $ 145,820 |
Contract with customer liability amount of revenue recognized that was included in the opening balance |  | 26,900 | 11,100 |
Accounts Receivable [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Contract with customer receivable after allowance for credit loss current |  | 5,200 |  | $ 4,100
Long-Term Contract with Customer [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, remaining performance obligation |  | 194,300 |  |
Commercialization and Reference Laboratory Agreement Member With Personalis Inc [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Term of agreement | 3 years |  |  |
Personalis Inc [Member] | Commercialization and Reference Laboratory Agreement Member With Personalis Inc [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Aggregate milestone amount payable | $ 12,000 |  |  |
Cumulative amount paid |  | 10,000 |  |
Contract with customer assets net current |  | $ 3,800 |  | $ 3,000
Personalis Inc [Member] | Commercialization and Reference Laboratory Agreement [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Class Of Warrant Share Issued |  | 9,218,800 |  |
One Year [Member] | Long-Term Contract with Customer [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, remaining performance obligation, percentage |  | 59.00% |  |
Two Year [Member] | Long-Term Contract with Customer [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, remaining performance obligation, percentage |  | 29.00% |  |
Three Year [Member] | Long-Term Contract with Customer [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue, remaining performance obligation, percentage |  | 12.00% |  |
Genomics Product [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | $ 193,800 | 102,600 |
Genomics Product [Member] | Self-Pay [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | 12,300 | 9,200 |
Clinical Order [Member] | Third-Party Payor [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | 181,500 | 93,400 |
Insights Product [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | 49,500 | 31,300 |
Trials Product [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | 9,700 | 11,300 |
Data And Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customers excluding assessed tax |  | $ 61,900 | $ 43,300 |

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