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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 |

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