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v3.20.1

REVENUE RECOGNITION - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 157,982 | $ 118,928
Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 75,899 | 47,480
Product revenue | Sales to enterprise customers |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 27,281 | 14,755
Product revenue | Sales to service provider customers |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 48,618 | 32,725
Product revenue | Indirect sales through channel partner program |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 28,604 | 19,174
Product revenue | Direct sales |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 47,295 | 28,306
Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 61,068 | 56,989
Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 21,015 | 14,459
United States |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 78,397 | 68,576
United States | Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 36,365 | 28,446
United States | Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 31,466 | 32,787
United States | Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 10,566 | 7,343
Europe, Middle East and Africa |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 39,190 | 20,030
Europe, Middle East and Africa | Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 20,365 | 6,458
Europe, Middle East and Africa | Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 14,810 | 10,723
Europe, Middle East and Africa | Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 4,015 | 2,849
Japan |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 10,440 | 8,436
Japan | Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 4,952 | 3,961
Japan | Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 2,874 | 2,913
Japan | Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 2,614 | 1,562
Asia Pacific |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 16,892 | 9,207
Asia Pacific | Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 9,991 | 4,675
Asia Pacific | Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 4,637 | 3,663
Asia Pacific | Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 2,264 | 869
Other |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 13,063 | 12,679
Other | Product revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 4,226 | 3,940
Other | Service revenue (maintenance) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 7,281 | 6,903
Other | Service revenue (professional services) |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 1,556 | $ 1,836

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