v3.26.3
Goodwill, Intangibles and Capitalized Software - Additional Information (Detail) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Goodwill $ 488,142,000   $ 488,142,000   $ 470,211,000
Goodwill, impairment loss 0 $ 0 0 $ 0  
Impairment of intangible assets, finite-lived 0 0 0 0  
Location, Statement of Income, Balance [Axis]: us-gaap:CostsAndExpenses          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Amortization of intangible assets 18,700,000 18,900,000 56,000,000 51,100,000  
Paige Acquisition, Ambry Acquisition, and Deep Six Acquisition [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Goodwill   391,700,000   391,700,000  
Ambry Acquisition And Deep Six Acquisition [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Goodwill, Measurement Period Adjustment       5,100,000  
Center Health Acquisition [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Goodwill, acquired during period $ 18,000,000   $ 18,000,000    
Paige Acquisition [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Goodwill   142,400,000   142,400,000  
Goodwill, Measurement Period Adjustment   1,200,000      
Maximum [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Finite-lived intangible asset, useful life 7 years   7 years    
Minimum [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Finite-lived intangible asset, useful life 3 years   3 years    
Weighted Average [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Finite-lived intangible asset, useful life 6 years   6 years    
External-use Software [Member]          
Finite And Indefinitely Lived Intangible Assets [Line Items]          
Amortization of intangible assets $ 0 $ 0 $ 0 $ 0  
Unamortized of intangible assets $ 13,700,000   $ 13,700,000   $ 0