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Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Apr. 01, 2017 | Apr. 02, 2016 | Apr. 01, 2017 | Apr. 02, 2016
Total stock-based compensation expense |  |  | $ 39,565 | $ 38,025
Cost of subscription, support and license revenue [Member] |  |  |  |
Total stock-based compensation expense | $ 1,669 | $ 1,100 | 3,106 | 3,005
Cost of professional service revenue |  |  |  |
Total stock-based compensation expense | 1,539 | 1,279 | 2,995 | 2,730
Sales and Marketing |  |  |  |
Total stock-based compensation expense | 4,130 | 3,777 | 7,751 | 8,059
Research and Development |  |  |  |
Total stock-based compensation expense | 3,951 | 2,534 | 6,948 | 5,047
General and Administrative |  |  |  |
Total stock-based compensation expense | 10,288 | 6,146 | 18,765 | 19,184
Share-based Compensation Expense Total [Member] |  |  |  |
Total stock-based compensation expense | 21,577 | 14,836 | 39,565 | $ 38,025
stock modification [Member] |  |  |  |
Total stock-based compensation expense |  | $ 10,000 |  |
ESPP [Member] |  |  |  |
Total stock-based compensation expense | $ 700 |  | $ 1,300 |

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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