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Revenues (Schedule of Major Customers Accounting for 10% or More of Net Revenues and Accounts Receivable Balance) (Details) - Customer Concentration Risk | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2019
Westcon Group Inc. | Net Revenue |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (percent) | 15.00% | 15.00% | 13.00% | 14.00% |
Jenne Corporation | Net Revenue |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (percent) | 18.00% | 12.00% | 16.00% | 12.00% |
Jenne Corporation | Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (percent) |  |  | 23.00% |  | 35.00%
Tech Data Corporation | Net Revenue |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (percent) | 14.00% | 22.00% | 15.00% | 19.00% |
Tech Data Corporation | Accounts Receivable |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk (percent) |  |  | 20.00% |  | 12.00%

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