Significant Accounting Policies - Summary of Revenue Recognized from Contract Liabilities and Remaining Balance (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items]
Deferred revenues, beginning balance	$ 4,248
Payments received in advance of services to be performed	26,920
Revenue recognized for services performed during the period	(27,104)
Foreign Currency Translation	(74)
Deferred revenues, ending balance	3,990
Information Services [Member]
Significant Accounting Policies [Line Items]
Deferred revenues, beginning balance	3,528
Payments received in advance of services to be performed	10,821
Revenue recognized for services performed during the period	(11,228)
Deferred revenues, ending balance	3,121
Post-trade Services [Member]
Significant Accounting Policies [Line Items]
Deferred revenues, beginning balance	720
Payments received in advance of services to be performed	16,099
Revenue recognized for services performed during the period	(15,876)
Foreign Currency Translation	(74)
Deferred revenues, ending balance	$ 869