Significant Accounting Policies - Summary of Information Services Revenue by Timing of Recognition (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Significant Accounting Policies [Line Items]
Revenues	$ 698,951	$ 689,125	$ 511,352
Information Services [Member]
Significant Accounting Policies [Line Items]
Revenues	38,175	34,341	30,730
Information Services [Member] | Transferred over Time [Member]
Significant Accounting Policies [Line Items]
Revenues	37,341	32,425	29,619
Information Services [Member] | Transferred at a Point in Time [Member]
Significant Accounting Policies [Line Items]
Revenues	$ 834	$ 1,916	$ 1,111