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Stock-based Compensation (Schedule of Classification of Compensation Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended
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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 |

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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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