Business Combinations - Preliminary Allocation of the Purchase Price to the Assets Acquired and the Liabilities Assumed By the Company (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 29, 2021	Sep. 09, 2021
Business Acquisition [Line Items]
Goodwill	$ 735,810	$ 734,274	$ 738,900
Measurement period adjustments		(3,770)
Purchase price adjustments from business acquisitions	$ 0	5,463	0
FDS Amplicare
Business Acquisition [Line Items]
Cash and cash equivalents					$ 465
Accounts receivable and unbilled receivables					5,330
Prepaid expenses					506
Other current assets					45
Total current assets					6,346
Property and equipment					444
Operating lease right-of-use assets					2,252
Goodwill					117,784
Intangible assets					70,000
Other long-term assets					51
Total assets					196,877
Accounts payable					950
Accrued compensation					1,312
Accrued liabilities					1,497
Deferred revenues					1,916
Long-term deferred tax liabilities					11,686
Long-term operating lease liabilities					920
Other long-term liabilities					130
Total liabilities					18,411
Total purchase price					178,466
Total purchase price, net of cash acquired					$ 178,001
Measurement period adjustments		400	(1,500)
Adjustment, accounts receivable and unbilled receivables			1,100
Adjustment, deferred tax liability, noncurrent			100
Purchase price adjustments from business acquisitions			100
Increase (decrease) in deferred tax liabilities		300
Increase (decrease) in accrued liabilities		100
FDS Amplicare | Customer relationships
Business Acquisition [Line Items]
Adjustment, intangibles			400
ReCept
Business Acquisition [Line Items]
Cash and cash equivalents				$ 0
Accounts receivable and unbilled receivables				2,383
Prepaid expenses				192
Other current assets				12,223
Total current assets				14,798
Property and equipment				172
Operating lease right-of-use assets				773
Goodwill				77,644
Intangible assets				28,100
Other long-term assets				195
Total assets				121,682
Accounts payable				219
Accrued compensation				1,756
Accrued liabilities				18,249
Deferred revenues				222
Long-term deferred tax liabilities				3,383
Long-term operating lease liabilities				614
Other long-term liabilities				0
Total liabilities				24,443
Total purchase price				97,239
Total purchase price, net of cash acquired				$ 90,670
Measurement period adjustments		(3,900)
Purchase price adjustments from business acquisitions		5,200
Increase (decrease) in deferred tax liabilities		(200)
Increase (decrease) in accrued liabilities		(300)
Decrease in other assets, current		1,700
MarkeTouch Media
Business Acquisition [Line Items]
Cash and cash equivalents			237
Accounts receivable and unbilled receivables			2,302
Prepaid expenses			96
Other current assets			0
Total current assets			2,635
Property and equipment			177
Operating lease right-of-use assets			602
Goodwill			42,273
Intangible assets			38,000
Other long-term assets			2,850
Total assets			86,537
Accounts payable			473
Accrued compensation			0
Accrued liabilities			292
Deferred revenues			347
Long-term deferred tax liabilities			0
Long-term operating lease liabilities			206
Other long-term liabilities			2,850
Total liabilities			4,168
Total purchase price			82,369
Total purchase price, net of cash acquired			$ 82,132
Measurement period adjustments		$ (300)