Subsequent Event (Narratives) (Details) $ in Thousands		1 Months Ended	3 Months Ended
	Oct. 27, 2017 USD ($) Quarter	Oct. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)
Subsequent Event [Line Items]
Upfront cash closing payment			$ 68,047
Borrowings under Term Loan			$ 80,000
Brocade SRA | Subsequent Event
Subsequent Event [Line Items]
Business acquisition date	Oct. 27, 2017
Upfront cash closing payment	$ 23,000
Deferred payment	20,000
Deferred payment to be paid per quarter	$ 1,000
Number of quarters deferred payment to be paid | Quarter	20
Quarterly earn out payments in percentage of profits of Brocade SRA	50.00%
Quarterly earn out payments period	5 years
Broadcom, Inc. | Subsequent Event
Subsequent Event [Line Items]
Acquisition fee paid		$ 25,000
Term Loan | Brocade SRA | Subsequent Event
Subsequent Event [Line Items]
Borrowings under Term Loan	$ 20,000