Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Total stock-based compensation expense	$ 14,071	$ 12,532	$ 38,135	$ 37,862
Cost of License Revenue
Total stock-based compensation expense	121	63	381	209
Cost of Service Revenue
Total stock-based compensation expense	1,317	1,549	4,510	4,436
Cost of Support Revenue
Total stock-based compensation expense	1,012	898	2,777	2,711
Sales and Marketing
Total stock-based compensation expense	3,430	3,065	9,383	8,583
Research and Development
Total stock-based compensation expense	2,928	2,231	9,015	7,067
General and Administrative
Total stock-based compensation expense	$ 5,263	$ 4,726	$ 12,069	$ 14,856