Balance Sheet Accounts (Narratives) (Details) - USD ($)	9 Months Ended	12 Months Ended
	Mar. 31, 2016	Jun. 30, 2015
Balance Sheet Accounts [Line Items]
Inventories	$ 52,755,000	$ 58,014,000
Letters for credit outstanding	$ 1,000,000
Standard hardware warranty period	12 months
Standard software warranty period	90 days
Limited lifetime hardware warranty maximum period after end of sale of product	5 years
Maximum investment in one obligor or maker (percent)	10.00%
Accounts Receivable | Westcon Group Inc. | Customer Concentration Risk
Balance Sheet Accounts [Line Items]
Concentration risk	17.00%
Accounts Receivable | Tech Data Corporation | Customer Concentration Risk
Balance Sheet Accounts [Line Items]
Concentration risk	11.00%
Revolving Facility
Balance Sheet Accounts [Line Items]
Term of agreement		5 years
Borrowing capacity		$ 50,000,000
Remaining borrowing capacity	$ 39,000,000
Term Loan
Balance Sheet Accounts [Line Items]
Term of agreement		5 years
Borrowing capacity		$ 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