Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ 907	$ 898
Unrecognized tax benefits	11,700
Enterasys Networks, Inc.
Operating Loss Carryforwards [Line Items]
Tax amortization deduction for capitalized goodwill	1,100	$ 1,100
Deferred tax liability, goodwill	$ 4,900
Amortization period for tax purposes	15 years