Significant Accounting Policies - Summary of Information Services Revenue by Timing of Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Significant Accounting Policies [Line Items]
Revenues	$ 182,229	$ 176,334	$ 368,286	$ 371,798
Information Services [Member]
Significant Accounting Policies [Line Items]
Revenues	9,396	9,844	19,205	19,006
Information Services [Member] | Transferred over Time [Member]
Significant Accounting Policies [Line Items]
Revenues	9,223	9,512	18,708	18,557
Information Services [Member] | Transferred at a Point in Time [Member]
Significant Accounting Policies [Line Items]
Revenues	$ 173	$ 332	$ 497	$ 449