Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Total stock-based compensation expense	$ 23,189	$ 11,242
Cost of software revenue
Total stock-based compensation expense	1,905	918
Cost of professional service revenue
Total stock-based compensation expense	1,451	1,689
Sales and Marketing
Total stock-based compensation expense	4,282	3,201
Research and Development
Total stock-based compensation expense	2,513	3,086
General and Administrative
Total stock-based compensation expense	13,038	$ 2,348
stock modification [Member]
Total stock-based compensation expense	$ 10,000