Subsequent Event	12 Months Ended
Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	14. Subsequent Event Avaya Acquisition On July 14, 2017, (the “Closing”) the Company completed its acquisition of Avaya’s fabric-based secure networking solutions and network security solutions business (“Avaya Networking”), that had been announced on March 7, 2017. Upon the terms and subject to the conditions of the asset purchase agreement, the Company will acquire customers, employees, technology and other assets of Avaya Networking, as well as assume certain contracts and other liabilities of Avaya Networking, for a purchase price of $100.0 million, subject to adjustments set forth in the Purchase Agreement related to net working capital, deferred revenue, certain assumed lease obligations and certain assumed pension obligations for transferring employees of Avaya Networking. Pursuant to certain ancillary agreements, Avaya will also provide the Company with access to specified technology related to Avaya Networking, as well as transition services for a period of time following the Closing of the transaction. As a condition of the agreement, the Company had made deposits of $10.2 million in the third quarter of fiscal 2017, which were applied to the purchase price upon Closing. The deposit is included in “Prepaid and other current assets” in the consolidated balance sheet as of June 30, 2017. The acquisition will be accounted for using the acquisition method of accounting whereby the acquired assets and liabilities of Avaya Networking will be recorded at their respective fair values and added to those of the Company including an amount for goodwill representing the difference between the acquisition consideration and the fair value of the identifiable net assets. Results of operations of Avaya Networking will be included in the operations of the Company beginning with the Closing. As of the date of the filing of this Form 10-K, the initial purchase price allocation has not been prepared as there has not been sufficient time to complete the related activities During the fiscal year ended June 30, 2017, the Company recognized transaction costs of $2.2 million which is included in “Acquisition and integration costs” in the accompanying condensed consolidated statements of operations. Borrowing Facility In connection with the Closing noted above, the Company entered into the Second Amendment to the Amended and Restated Credit Agreement (“Second Amendment”), which amended the Amended and Restated Credit Agreement, dated as of October 28, 2016 (the “Credit Facility, as amended”), by and among the Company, as borrower, Silicon Valley Bank, as administrative agent and collateral agent, and Lenders. Among other things, the Second Amendment (i) increased the amount of the available borrowing under the Credit Facility from $140.5 million to $243.7 million, composed of (a) the Term Loan in a principal amount of up to $183.7 million and (b) the Revolver in a principal amount of up to $60.0 million, (ii) extends the maturity date under the existing Term Loan and the termination date under the existing Revolver until July 2022, (iii) provides for an uncommitted additional incremental loan facility in a principal amount of up to $50.0 million (“Incremental Facility”), and (iv) joins certain additional banks, financial institutions and institutional lenders as Lenders pursuant to the terms of the Credit Facility, as amended. On July 14, 2017, the Company borrowed an additional $80.0 million under the Term Loan which was used to fund the purchase of the Avaya Networking business. Borrowings under the Amended Term Loan bear interest, at our option, at a rate equal to either the LIBOR rate (subject to a 0.0% LIBOR floor), plus an applicable margin (currently 3.25% per annum) or the adjusted base rate, plus an applicable margin (currently 1.25% per annum). Borrowings under the Revolving Loan bear interest, at the Company’s option, at a rate equal to either the LIBOR rate, plus an applicable margin (currently 3.25% per annum) or the adjusted base rate, plus an applicable margin (currently 1.25% per annum based). The Revolving Loan has a commitment fee payable on the undrawn amount ranging from 0.375% to 0.50% per annum.

14. Subsequent Event

Avaya Acquisition

On July 14, 2017, (the “Closing”) the Company completed its acquisition of Avaya’s fabric-based secure networking solutions and network security solutions business (“Avaya Networking”), that had been announced on March 7, 2017. Upon the terms and subject to the conditions of the asset purchase agreement, the Company will acquire customers, employees, technology and other assets of Avaya Networking, as well as assume certain contracts and other liabilities of Avaya Networking, for a purchase price of $100.0 million, subject to adjustments set forth in the Purchase Agreement related to net working capital, deferred revenue, certain assumed lease obligations and certain assumed pension obligations for transferring employees of Avaya Networking. Pursuant to certain ancillary agreements, Avaya will also provide the Company with access to specified technology related to Avaya Networking, as well as transition services for a period of time following the Closing of the transaction. As a condition of the agreement, the Company had made deposits of $10.2 million in the third quarter of fiscal 2017, which were applied to the purchase price upon Closing. The deposit is included in “Prepaid and other current assets” in the consolidated balance sheet as of June 30, 2017.

The acquisition will be accounted for using the acquisition method of accounting whereby the acquired assets and liabilities of Avaya Networking will be recorded at their respective fair values and added to those of the Company including an amount for goodwill representing the difference between the acquisition consideration and the fair value of the identifiable net assets. Results of operations of Avaya Networking will be included in the operations of the Company beginning with the Closing. As of the date of the filing of this Form 10-K, the initial purchase price allocation has not been prepared as there has not been sufficient time to complete the related activities

During the fiscal year ended June 30, 2017, the Company recognized transaction costs of $2.2 million which is included in “Acquisition and integration costs” in the accompanying condensed consolidated statements of operations.

Borrowing Facility

In connection with the Closing noted above, the Company entered into the Second Amendment to the Amended and Restated Credit Agreement (“Second Amendment”), which amended the Amended and Restated Credit Agreement, dated as of October 28, 2016 (the “Credit Facility, as amended”), by and among the Company, as borrower, Silicon Valley Bank, as administrative agent and collateral agent, and Lenders. Among other things, the Second Amendment (i) increased the amount of the available borrowing under the Credit Facility from $140.5 million to $243.7 million, composed of (a) the Term Loan in a principal amount of up to $183.7 million and (b) the Revolver in a principal amount of up to $60.0 million, (ii) extends the maturity date under the existing Term Loan and the termination date under the existing Revolver until July 2022, (iii) provides for an uncommitted additional incremental loan facility in a principal amount of up to $50.0 million (“Incremental Facility”), and (iv) joins certain additional banks, financial institutions and institutional lenders as Lenders pursuant to the terms of the Credit Facility, as amended. On July 14, 2017, the Company borrowed an additional $80.0 million under the Term Loan which was used to fund the purchase of the Avaya Networking business.

Borrowings under the Amended Term Loan bear interest, at our option, at a rate equal to either the LIBOR rate (subject to a 0.0% LIBOR floor), plus an applicable margin (currently 3.25% per annum) or the adjusted base rate, plus an applicable margin (currently 1.25% per annum). Borrowings under the Revolving Loan bear interest, at the Company’s option, at a rate equal to either the LIBOR rate, plus an applicable margin (currently 3.25% per annum) or the adjusted base rate, plus an applicable margin (currently 1.25% per annum based). The Revolving Loan has a commitment fee payable on the undrawn amount ranging from 0.375% to 0.50% per annum.