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Summary of Significant Accounting Policies - Schedule of Revenue Disaggregated by Revenue Type, Geographic Region and Customer (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenue: |  |  |
Total revenue | $ 1,169,258 | $ 1,089,752 | $ 1,046,487
Percentage of total revenue | 100.00% | 100.00% | 100.00%
Broadband/Cable/Satellite |  |  |
Revenue: |  |  |
Percentage of total revenue | 52.00% | 54.00% | 57.00%
Telecommunications |  |  |
Revenue: |  |  |
Percentage of total revenue | 20.00% | 20.00% | 19.00%
Other |  |  |
Revenue: |  |  |
Percentage of total revenue | 28.00% | 26.00% | 24.00%
Americas (principally the U.S.) |  |  |
Revenue: |  |  |
Percentage of total revenue | 86.00% | 85.00% | 85.00%
Europe, Middle East and Africa |  |  |
Revenue: |  |  |
Percentage of total revenue | 10.00% | 11.00% | 11.00%
Asia Pacific |  |  |
Revenue: |  |  |
Percentage of total revenue | 4.00% | 4.00% | 4.00%
SaaS and Related Solutions |  |  |
Revenue: |  |  |
Total revenue | $ 1,024,572 | $ 956,995 | $ 926,290
Software and Services |  |  |
Revenue: |  |  |
Total revenue | 98,078 | 87,247 | 72,818
Maintenance |  |  |
Revenue: |  |  |
Total revenue | $ 46,608 | $ 45,510 | $ 47,379

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