Significant Accounting Policies - Summary of Information Services Revenue by Timing of Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Significant Accounting Policies [Line Items]
Revenues	$ 172,112	$ 162,093	$ 540,398	$ 533,891
Information Services [Member]
Significant Accounting Policies [Line Items]
Revenues	9,711	9,608	28,916	28,614
Information Services [Member] | Transferred over Time [Member]
Significant Accounting Policies [Line Items]
Revenues	9,524	9,389	28,232	27,946
Information Services [Member] | Transferred at a Point in Time [Member]
Significant Accounting Policies [Line Items]
Revenues	$ 187	$ 219	$ 684	$ 668