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Balance Sheet Accounts (Narratives) (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016
Balance Sheet Accounts [Line Items] |  |  |
Inventory, net | $ 43,395,000 |  | $ 40,989,000
Outstanding letters of credit | $ 1,000,000 |  |
Standard hardware warranty period (in months) | 12 months |  |
Standard software warranty period (in days) | 90 days |  |
Limited lifetime hardware warranty maximum period after end of sale of product (in years) | 5 years |  |
Maximum investment in one obligor or maker (percent) | 10.00% |  |
Accounts Receivable | Westcon Group Inc. |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Concentration risk (percent) | 17.00% |  |
Accounts Receivable | Tech Data Corporation |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Concentration risk (percent) | 11.00% |  |
Revolving Facility |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Credit Agreement term |  | 5 years |
Borrowing capacity from Credit Agreement | $ 27,100,000 | $ 50,000,000 |
Term Loan |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Credit Agreement term |  | 5 years |
Borrowing capacity from Credit Agreement |  | $ 65,000,000 |
Maximum |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Extended warranty period | 5 years |  |
Minimum |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Extended warranty period | 1 year |  |
Cash equivalents | Maximum |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Maturity period for investments | 3 months |  |
Short-term investments | Maximum |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Maturity period for investments | 1 year |  |
Short-term investments | Minimum |  |  |
Balance Sheet Accounts [Line Items] |  |  |
Maturity period for investments | 3 months |  |

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