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Revenue from Contracts with Customers - Additional Information (Detail) - Agreement	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Percentage of billing expense revenues	2.00%
Sales Revenue Net [Member] | Fidelity, CGI and Populus [Member]
Disaggregation of Revenue [Line Items]
Number of customers	1	3
Sales Revenue Net [Member] | Revenue from Rights Concentration Risk [Member] | Minimum [Member]
Disaggregation of Revenue [Line Items]
Percentage of total accounts receivable	10.00%	10.00%
Sales Revenue Net [Member] | Revenue from Rights Concentration Risk [Member] | CGI [Member]
Disaggregation of Revenue [Line Items]
Percentage of total accounts receivable		11.90%
Sales Revenue Net [Member] | Revenue from Rights Concentration Risk [Member] | Allegis [Member]
Disaggregation of Revenue [Line Items]
Percentage of total accounts receivable		11.70%
Sales Revenue Net [Member] | Revenue from Rights Concentration Risk [Member] | Fidelity [Member]
Disaggregation of Revenue [Line Items]
Percentage of total accounts receivable	24.50%	12.90%
Top Ten Customers [Member]
Disaggregation of Revenue [Line Items]
Revenue percentage of total revenue	60.00%	56.00%
Data and Analytics Services [Member]
Disaggregation of Revenue [Line Items]
Percent of revenue from services	100.00%

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- Definition

Customer percentage of revenue.

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Number of customers accounted for revenues.

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- Definition

Revenue percentage to aggregate revenue.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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