Significant Accounting Policies - Summary of Information Services Revenue by Timing of Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Significant Accounting Policies [Line Items]
Revenues	$ 172,284	$ 172,112	$ 555,299	$ 540,398
Information Services [Member]
Significant Accounting Policies [Line Items]
Revenues	11,801	9,711	34,466	28,916
Information Services [Member] | Transferred over Time [Member]
Significant Accounting Policies [Line Items]
Revenues	11,341	9,524	33,487	28,232
Information Services [Member] | Transferred at a Point in Time [Member]
Significant Accounting Policies [Line Items]
Revenues	$ 460	$ 187	$ 979	$ 684