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Acquisitions - Other Information (Details) $ in Thousands				3 Months Ended	9 Months Ended		189 Months Ended
	Jun. 20, 2023 USD ($)	Dec. 28, 2022 USD ($)	Jan. 03, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) business	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) business	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Number of businesses acquired | business							18
Goodwill arising in the acquisition				$ 673,159	$ 673,159		$ 673,159	$ 717,743
Change in fair value of contingent considerations					$ 11,316	$ 0
Software or Technology Related Acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | business					13
Integrated Nonclinical Development Solutions, Inc.
Business Acquisition [Line Items]
Business combination, consideration transferred			$ 8,048
Vyasa Analytics, LLC
Business Acquisition [Line Items]
Business combination, consideration transferred		$ 29,276
Goodwill arising in the acquisition		$ 16,589
Contingent consideration earn out period		3 years
Contingent consideration percentage of consideration paid in cash		70.00%
Contingent consideration percentage of consideration paid in stock		30.00%
Contingent consideration, liability		$ 19,813		31,512	$ 31,512		31,512	$ 31,919
Contingent consideration arrangements, range of outcomes, high				60,000	60,000		60,000
Vyasa Analytics, LLC | General and administrative
Business Acquisition [Line Items]
Change in fair value of contingent considerations					11,699
Vyasa Analytics, LLC | Minimum
Business Acquisition [Line Items]
Contingent consideration payout amount based on revenue achievement		0
Vyasa Analytics, LLC | Maximum
Business Acquisition [Line Items]
Contingent consideration payout amount based on revenue achievement		60,000
Drug Interaction Solutions University of Washington (DIDB)
Business Acquisition [Line Items]
Business combination, consideration transferred	$ 8,340
Goodwill arising in the acquisition	$ 2,316
Contingent consideration earn out period	2 years
Contingent consideration, liability	$ 790			407	407		407
Change in fair value of contingent considerations				(383)
Contingent consideration arrangements, range of outcomes, high				$ 2,000	$ 2,000		$ 2,000
Drug Interaction Solutions University of Washington (DIDB) | Maximum
Business Acquisition [Line Items]
Contingent consideration arrangements, range of outcomes, high	2,000
Customer Relationships | Integrated Nonclinical Development Solutions, Inc.
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			2,380
Customer Relationships | Vyasa Analytics, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		11,400
Customer Relationships | Drug Interaction Solutions University of Washington (DIDB)
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	360
Developed Technology Rights | Integrated Nonclinical Development Solutions, Inc.
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			1,040
Developed Technology Rights | Vyasa Analytics, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		1,500
Developed Technology Rights | Drug Interaction Solutions University of Washington (DIDB)
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	5,600
Noncompete Agreements | Integrated Nonclinical Development Solutions, Inc.
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			100
Noncompete Agreements | Vyasa Analytics, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		120
Trademarks | Integrated Nonclinical Development Solutions, Inc.
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			$ 2,910
Trademarks | Vyasa Analytics, LLC
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 80
Trademarks | Drug Interaction Solutions University of Washington (DIDB)
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 330

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