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Revenues - Summary of Revenues Disaggregated (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation Of Revenue [Line Items]
Revenues	$ 77.5	$ 72.6	$ 330.7	$ 292.0
Connections [Member]
Disaggregation Of Revenue [Line Items]
Revenues	67.5	62.4	301.2	260.8
Content [Member]
Disaggregation Of Revenue [Line Items]
Revenues	4.5	4.9	13.6	15.5
Commerce [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 5.5	$ 5.3	$ 15.9	$ 15.7

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