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Revenues - Summary of Revenues Disaggregated (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation Of Revenue [Line Items]
Revenues	$ 105.5	$ 86.0	$ 253.2	$ 219.4
Connections [Member]
Disaggregation Of Revenue [Line Items]
Revenues	95.4	75.0	233.7	198.4
Content [Member]
Disaggregation Of Revenue [Line Items]
Revenues	4.9	5.9	9.1	10.6
Commerce [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 5.2	$ 5.1	$ 10.4	$ 10.4

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