Acquisitions and Dispositions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 19, 2024	Oct. 01, 2024	Jan. 02, 2024
Business Acquisition [Line Items]
Goodwill	$ (1,562,490)	$ (1,554,146)
Team Epiphany
Business Acquisition [Line Items]
Cash and cash equivalents					$ 1,095
Accounts receivable					8,283
Other current assets					402
Fixed assets					184
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					4,316
Right-of-use lease assets - operating leases					2,788
Accounts payable					(1,086)
Accruals and other liabilities					(664)
Advance billings					(8,808)
Current portion of lease liabilities					(516)
Net liabilities assumed					(8,217)
Goodwill					(8,452)
Purchase price consideration					16,669
Long-term portion of lease liabilities					(2,600)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current, Expenditures Billables					$ 4,823
Unicepta
Business Acquisition [Line Items]
Cash and cash equivalents			$ 2,723
Accounts receivable			9,354
Other current assets			575
Fixed assets			429
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			36,833
Other assets			140
Right-of-use lease assets - operating leases			5,911
Accounts payable			(2,808)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			(6,998)
Advance billings			(951)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			(406)
Current portion of lease liabilities			(1,071)
Net liabilities assumed			(27,831)
Goodwill			(34,583)
Purchase price consideration			62,414
Long-term portion of lease liabilities			(5,400)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities			$ (10,500)
Consulum
Business Acquisition [Line Items]
Cash and cash equivalents				$ 2,151
Accounts receivable				26,845
Other current assets				3,094
Fixed assets				2,032
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				57,200
Right-of-use lease assets - operating leases				2,173
Accounts payable				(2,078)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other				(9,167)
Advance billings				(5,425)
Current portion of lease liabilities				(983)
Net liabilities assumed				(66,159)
Goodwill				(16,687)
Purchase price consideration				82,846
Long-term portion of lease liabilities				(1,065)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities				$ (8,618)