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Business Combination (Narratives) (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Aug. 09, 2019 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Acquisition and integration related expenses |  | $ 8,994 |  | $ 67 | $ 24,919 | $ 2,613
Aerohive Networks, Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition, cash consideration | $ 267,146 |  |  |  |  |
Business acquisition, date of acquisition | Aug. 09, 2019 |  |  |  |  |
Revenue |  | 41,900 |  |  | 67,300 |
Acquisition and integration related expenses |  | $ 9,000 |  |  | $ 24,900 |
Compensation charge associated with acquisition |  |  | $ 6,800 |  |  |

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