Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ 866	$ 1,121	$ 2,967	$ 3,458
Unrecognized tax benefits	11,600		11,600
Enterasys Networks, Inc.
Operating Loss Carryforwards [Line Items]
Tax amortization deduction for capitalized goodwill	1,100		3,400
Deferred tax liability, goodwill	$ 3,600		$ 3,600
Amortization period for tax purposes			15 years