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v3.25.2

Goodwill and Other Intangible Assets - Additional Information (Detail) |  |  |  | 3 Months Ended | 6 Months Ended |
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Jun. 30, 2025 USD ($) | May 04, 2025 USD ($) | May 05, 2024 USD ($) | Jun. 24, 2025 USD ($) | Mar. 29, 2025 USD ($) | Jun. 29, 2024 USD ($) | Mar. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) Segment | Jun. 24, 2025 USD ($) | Jun. 29, 2024 USD ($) | Dec. 28, 2024 USD ($)
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | Segment |  |  |  |  |  |  |  | 1 |  |  |
Number of operating segments | Segment |  |  |  |  |  |  |  | 1 |  |  |
Finite-lived intangible assets, aggregate amortization expense | $ 1,623,000 |  |  | $ 6,455,000 |  | $ 8,472,000 |  |  | $ 12,405,000 | $ 17,762,000 |
Goodwill impairment |  | $ 0 | $ 0 |  |  |  |  |  |  |  |
Franchise right maturity period |  |  |  |  |  |  |  | 7 years |  |  |
Total other intangible assets | 529,188,000 |  |  |  |  |  |  | $ 529,188,000 |  |  | $ 357,998,000
Fresh Start Accounting |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total other intangible assets | $ 529,000,000 |  |  |  |  |  |  | $ 529,000,000 |  |  |
Behavioral Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  | $ 0 |  |  |  |  |  |
Percentage of goodwill held |  |  |  |  | 62.70% |  |  |  |  |  |
Behavioral Reporting Unit | Minimum |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of estimated fair value in excess of carrying amount |  |  |  |  | 55.00% |  |  |  |  |  |
Clinical Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  | $ 0 |  |  |  |  |  |
Percentage of goodwill held |  |  |  |  | 37.30% |  |  |  |  |  |
Clinical Reporting Unit | Minimum |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of estimated fair value in excess of carrying amount |  |  |  |  | 60.00% |  |  |  |  |  |
All Reporting Units | Minimum |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of estimated fair value in excess of carrying amount |  |  |  |  |  |  | 25.00% |  |  |  |
All Reporting Units | Clinical Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  | $ 0 |  |  |  |
Database |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated margin rate |  |  |  |  |  |  |  | 19.00% |  |  |
Developed technology | Behavioral Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated royalty rate |  |  |  |  |  |  |  | 4.00% |  |  |
Developed technology | Clinical Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated royalty rate |  |  |  |  |  |  |  | 5.00% |  |  |
Customers/subscribers |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Discount rate |  |  |  |  |  |  |  | 17.00% |  |  |
Estimated attrition rate |  |  |  |  |  |  |  | 10.00% |  |  |
Customers/subscribers | Behavioral Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated attrition rate |  |  |  |  |  |  |  | 25.00% |  |  |
Customers/subscribers | Clinical Reporting Unit |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated attrition rate |  |  |  |  |  |  |  | 40.00% |  |  |
Franchise rights acquired | United States |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indefinite-lived intangible assets, impairment charges |  |  |  |  | $ 27,549,000 |  | $ 251,431,000 |  |  |  |
Indefinite-lived franchise rights acquired percentage |  |  |  |  | 100.00% |  |  |  |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Asset Impairment Charges |  | Asset Impairment Charges |  |  |  |
Franchise rights acquired | United Kingdom |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indefinite-lived intangible assets, impairment charges |  |  |  |  |  |  | $ 155,000 |  |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  | Asset Impairment Charges |  |  |  |
Franchise rights acquired | Australia |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indefinite-lived intangible assets, impairment charges |  |  |  |  |  |  | $ 4,074,000 |  |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  | Asset Impairment Charges |  |  |  |
Franchise rights acquired | New Zealand |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indefinite-lived intangible assets, impairment charges |  |  |  |  |  |  | $ 2,328,000 |  |  |  |
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  | Asset Impairment Charges |  |  |  |
Trade names |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated royalty rate |  |  |  |  |  |  |  | 6.00% |  |  |

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