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Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Concentration Risk [Line Items]
Revenue	$ 748,487	$ 601,117	$ 573,152
Recognized revenue	6,600
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Concentration Risk [Line Items]
Remaining performance obligation, amount	$ 7,000
Remaining performance obligation period (in months)	12 months
CPaaS, Usage-Based Fees
Concentration Risk [Line Items]
Revenue	$ 401,400	346,900	354,000
CPaaS, Service Fees
Concentration Risk [Line Items]
Revenue	$ 138,400	$ 132,000	$ 120,600

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