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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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