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Subsequent Event - (Narratives) (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Aug. 09, 2019 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Subsequent Event [Line Items] |  |  |  |
Business acquisition, cash consideration |  |  | $ 97,581,000 | $ 51,088,000
Aerohive Networks, Inc. | Acquisition and Integration Costs |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Acquisition-related costs |  | $ 800,000 |  |
Subsequent Event | 2019 Credit Agreement | Term Loan |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Credit Facility, term | 5 years |  |  |
Borrowing capacity from Credit Agreement | $ 380,000,000 |  |  |
Subsequent Event | 2019 Credit Agreement | Revolving Facility |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Credit Facility, term | 5 years |  |  |
Borrowing capacity from Credit Agreement | $ 75,000,000 |  |  |
Subsequent Event | Maximum | 2019 Credit Agreement |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Additional incremental loan facility that may be requested | $ 100,000,000 |  |  |
Subsequent Event | Aerohive Networks, Inc. |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Business acquisition, date of acquisition | Aug. 09, 2019 |  |  |
Business acquisition, cash consideration | $ 264,000,000 |  |  |

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