Business Combinations - Revenue and Net Loss Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
ProQuest
Business Acquisition [Line Items]
Revenues, net	$ 80,418
Net income attributable to the Company's shareholders	3,000
CPA Global
Business Acquisition [Line Items]
Revenues, net	631,365	$ 157,504
Net income attributable to the Company's shareholders	(54,032)	(39,985)
Deferred revenue haircut	3,863	15,297
Decision Resources Group
Business Acquisition [Line Items]
Revenues, net	105,265	186,428
Net income attributable to the Company's shareholders	28,431	4,999
Deferred revenue haircut	$ 0	$ 7,157