Goodwill and Intangibles - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Finite And Indefinitely Lived Intangible Assets [Line Items]
Goodwill, acquired during period	$ 0	$ 0		$ 0
Goodwill, impairment loss	0	0	$ 0	0
Impairment of intangible assets, finite-lived	0	0	0	0
Operating Cost and Expenses [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 19,700,000	2,800,000	32,200,000	5,700,000
Ambry Acquisition And Deep Six Acquisition [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Goodwill, acquired during period			$ 252,300,000
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
DeIdendified Data Through Additional Agreement [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets		$ 0		$ 0
Customer Relationships [Member] | Ambry Acquisition [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			$ 234,000,000
Licensed Data [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			5,700,000
Licensed Data [Member] | DeIdendified Data Through Amended Agreement [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets	$ 5,700,000
Developed Technology - Biotech [Member] | Ambry Acquisition [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			114,000,000
Trade Names [Member] | Ambry Acquisition [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			33,000,000
Developed Technology - Software [Member] | Ambry Acquisition [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			18,000,000
Capitalized Software [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets			$ 3,300,000
Capitalized Software [Member] | DeIdendified Data Through Amended Agreement [Member]
Finite And Indefinitely Lived Intangible Assets [Line Items]
Additions to finite lived intangible assets	$ 2,000,000